Condensed News

HeyIf anyone is interested, here's my shared items page from my RSS reader:LinkTheres an RSS feed on that page too.Before you go all "What's the point of this!?" on me -- let me explain.I go through about 400 items a day. This is the condensed version. I share 2 things mostly: Things that are funny/ironic -- and things that are interesting. Its a pretty even mix. My feeds include:Blogs:Make, Lifehacker, Gizmondo, Engadget, Consumerist, Slashdot, WorseThanFailureAnd:Instructables & diggTheres a few others, but they aren't good often. I'll gladly add any other feed that you want.I've only been doing this for a few days -- I need to get used to hitting "share". Anything I view, I share. Theres some things that I really don't care about --but others might -- that I'll also share.Hopefully, this can help some people shave time off their news-reading. Let me know if theres some other source I should read!(This post sponsored by Kiteman's Zeroth Law)

Topic by zachninme 11 years ago  |  last reply 11 years ago


"Hydronic" A/C in an enclosed overhead space condensing and weeping ruining the ceiling tiles.

In an historic building, a remodel installing a chill water A/C air handler into a ceiling space now completely enclosed, is experiencing severe condensation and weeping onto the drop ceiling tiles.  I suspect a building code violation; "non vented installation". I am guessing a small powered fan/blower, cycling the air in the over head enclosed space with the "air-conditioned" environment. I am just guessing...  I would be honored to receive expert advice. Thank you, Calvin Rodriguez 858-382-9692

Question by watchmkr1 7 years ago  |  last reply 7 years ago


Peltier coolers and condensation?

Hi there, I'm having this crazy idea of building a mini AC based on a Peltier cooler, and connect it to a PC case to introduce cold air inside of it. I have seen a lot of instructables here, but I'm worried about condensation. You know, the "electronics + power + water = Kaboom!" equation. Neither the peltier nor the "cold" heatsink will be inside the case, I'll just blow air thru the "cold" heatsink and inside the case, releasing hot air far away (maybe with a long tube?). My question is if the cold air will carry some kind of "humidity" from the condensed cold heatsink, and if it will be enough to blow things up. I can spare some 60 or 70 watts to make the peltier work, so I'll just grab a ATX power supply for the peltier and the fans. Do you think it will work? Thanks in advance, and Happy New Year. :)

Question by ethaniel 8 years ago  |  last reply 2 years ago


iMac condensation issue?

Our iMacs have a large patch of condensation behind the screen. After we run them for a while, it evaporates, but it comes back after a couple of days. This has happened several times. Has anyone else had this issue? How can we stop it from happening? Thanks, Bob.

Question by memyselfand1 8 years ago


Drinking Water Condenser

Does anyone have any plans or ideas for a DIY drinking water condenser? Something that can make water from the air would be fantastic, especially as climate change starts to have more and more of an impact on the availability of clean water. Electric powered should be fine, directly solar powered might be more difficult. Any thoughts?

Topic by foul_owl 5 years ago  |  last reply 5 years ago


Air Conditioner Condensate

I've been thinking recently about ways to reuse the condensed water vapor that comes out of my air conditioner condenser. I've currently got a bucket set up under the spot where the condensate drips out just to see how much water is actually wasted. With the summer heat, I've got the AC going almost all day, and it comes out to about 1 gallon a day. What I'd ultimately like to do is have a storage tank for this water that I can use to water the lawn, wash the car, etc. The problem, though, is that the water outlet is very low to the ground, so only a small bucket will fit directly underneath (meaning it overflows by the end of the day). I'd like to have some sort of hose direct the fluid into a much larger container, and I'd like to do it without electricity. I can't think of a way to move the water without using some kind of pump, though. Any ideas?

Topic by hobscrk777 10 years ago  |  last reply 7 years ago


cooker hood condenser

Ok i have moved into a new studio which does not have an external vent fitted to the cooker hood and relies on a re-circulation kit comprising of a small tower and a disposable carbon filter (which can cost quite a bit to keep replacing). So what i was thinking was how about ducting it to a homemade condenser, something simple like a plastic container with a cut off of hood filter attached to an area near the top of the container and the vent ducted in through the top of the container it could be primed with an inch or so of water to get the process going..... i recon my concept is pretty basic but am i heading in the right direction?

Topic by Tallanted 5 years ago  |  last reply 5 years ago


Problem with too much window condensation

I have double pane, insulating glass house windows that collect condensation during the winter heating months. The condensation is not between the panes, it is inside the home. The water builds up and runs down onto the wood frame causing rot. It occurs only on the bottom inch or two of the window. The home is in Northern Wisconsin where it is commonly 20 deg F outside and 70 deg F inside. The interior humidity is controlled and not excessive. Aside from setting the interior humidity to desert-like conditions, how can I remove the moisture and prevent further damage to the frame? Desiccant bags? Solar powered fans? Any ideas would be greatly appreciated.

Topic by kwschofi 10 years ago  |  last reply 3 months ago


How do I stop condensation from appearing on a cheap styrofoam cooler?

I'm building my own dehumidifier (future instructable if I can solve this problem) and I realize that buying a good cooler is probably most sensible but I am on a budget and the copper coiling drained my funds (Only 15, no job, and my parents don't want to spend a lot on something they don't think will ever really work, hopefully I can prove them wrong). Anyways, the crappy cooler I have will have to do for the time being. Any suggestions would be greatly appreciated. 

Question by zchampine 8 years ago  |  last reply 8 years ago


Moisture between glass windows?

Any ideas to dry out the moisture between double glass window? 

Question by rx-rx 3 years ago  |  last reply 3 years ago


Laundry room with no exterior walls in need of a better dryer exhaust solution! Ideas?

I have a dryer with an exhaust vent that could not possible exit my condo as it is in a stack in the very center of my unit; moreover, even with a crafty snaking of ventilation piping couldn't get it near an exterior wall.  As you can guess, when I dry my clothes the utility room turns into a sauna and all of my walls develop condensation from the hot air and water vapor the dryer is using and extracting.  Does anyone have any good ideas for how I could reduce the condensation build-up or even alleviate the problem?  I thought of making some sort of dispersal fan to cool the hot dryer air as it exits the dryer, but I am not sold on this idea.

Question by interested1 8 years ago  |  last reply 8 years ago


How to make water from excessively humid air (using little energy) . Any ideas?

I was thinking of making some sort of machine that uses cooling coils to condense water from the air, seeing as to how humid it has been lately, but I want to do it using less energy than a dehumidifier that's on all the time and have it be more rugged so I can put it outside and maybe use it to water the garden. Any ideas?

Topic by hydrnium.h2 10 years ago  |  last reply 10 years ago


Condensing to To PDF is not working for this instructable

Https://www.instructables.com/id/Guitar-Tube-Amp/?download=pdf  This address does not provide the epected pdf, just a note that reads "The file is damaged and could not be repaired" please let me know when you fix it at  patcom1970@yahoo.co.uk

Topic by mobby666 8 years ago


Recover heat from freezer condenser?

Anybody ever tried to use a freezer or fridge condenser to preheat water (before sending it to water heater)? I'm thinking about an easy setup; a coil of copper tubing fastened to the condenser. I know It seems insignificant, but given the low cost of the setup, i think it could be worth it.

Question by jemor143 6 years ago  |  last reply 6 years ago


in distilation , how is a condenser set up? Answered

after watching a video made by nurdrage and realising i could use a condenser to distill various chemicals like ammonia water, i was wondering, how is a condenser set up. now ive looked at a lot of images, and all i see is the top of the condenser where the gas enters, thenthe bottom where the gas exits as a liquid. now what i dont nderstand is the two middle middle nozzles, ive looked at many setups and theres usually nothing attached to them, or they have a hose attached to them that goes nowhere and you cant see where they end, so i must ask, what are they for, in the sense, what do they do? and what, if anything, are they attached to? whoever answers my question properly and makes sense will receive a best answer. also, i will just add, ive searched through google and wikipedia, and found zilch that made any sense to me.

Question by oldmanbeefjerky 8 years ago  |  last reply 8 years ago


How do I clean from white sludge the pressure switch, the pressure regulator and the air hose of my air compressor? Answered

I recently bought a water trap filter for my air compressor (Black & Decker CP2525). When I unscrewed the pressure regulator and the air hose to make the connections I noticed that the air circuit was littered from white sludge (condensate + oil). I am afraid that this stuff will clog the filter quickly. Should I clean it? How can I clean it?

Question by taloskriti 3 years ago  |  last reply 2 years ago


How do i wire condenser mics in stereo to plug into my computer?

Question by omega9o 8 years ago  |  last reply 7 years ago


how to make caramel out of canned condensed milk?

 i have made Cramel out of canned condensed milk before when i was young, but  now i forgot how to. All I know is that you boil the whole can with the condensed milk inside... for how long, I forgot.

Question by jonl_b 9 years ago  |  last reply 9 years ago


If I mist my condenser while it help cool my house? Answered

Lets say I put a mister on my condenser outside, and when the air conditioning comes on it sprays water mist on the condenser. The idea would be: as the water evaporates on the coil it will remove more heat from the unit and it wont run so much.

Question by BluTiger 8 years ago  |  last reply 7 months ago


How to prevent and/or remove condensation in the microwave door?

My microwave is above the stove and when anything is cooked that produces stream, condensation appears in the window/door of the microwave and it remains for days. How do I prevent this from happening or get it to go away? Using the fan does not help.

Question by 9 years ago  |  last reply 9 years ago


someone tell me how to use a condenser mic to obtain the best production? Answered

Help me set up a home studio

Question by Chyker 9 years ago  |  last reply 9 years ago


Will a condenser mic work the same way as a 3.5 mm mono audio jack? Answered

I will be building an FM transmitter soon, and I wanted it to have a condenser mic with a switch that switches the input of the condenser mic, to the input of a jack that people could play music from. In other words, the user would be able to speak to the transmitter, flip a switch, and then play music through to the jack. My only question really, is whether or not it would work? Thank you for taking the time to read this, I really appreciate it. The attached picture is the schematic I am working off of.

Question by XBLmonster 5 years ago  |  last reply 5 years ago


Tall irrigated hedge to pre-cool A/C condenser? Answered

I am thinking about planting a hedge around our air conditioner condenser to increase its efficiency. This would serve as shade for the condenser and as a means to inject water to keep the plant cooling the air as it evaporates the water. When rainwater is available, an aquarium pump could "irrigate" the hedge. When not available, a switch could control a valve for a high-pressure drip irrigation system. Both could be controlled by the compressor circuit. Keep the hedge trimmed about 6 feet tall and with just enough space around the condenser for a workman to easily maintain the unit (at least 3 feet from the condenser). The hedge would have to be drought resistant and one that does not shed leaves or debris. Any thoughts about this?

Question by VirgilB6 2 years ago  |  last reply 2 years ago


Technology Makes Cheap Drinking Water from Air

INTRODUCTION:   How can we best apply basic technology to help the underprivileged and/or disaster-hit countries like Haiti? Daily hygiene and nourishment are among the top needs for disaster ridden regions!  Simply put, no water means no hygiene. The Romans understood that over two millennia ago and created their complexly beautiful aqueduct networks for handling both fresh and wastewater! Other ingenious water systems like “air wells” have been found in the city of Theodosia (cf: discovered in 1900 by Zibold, see Zibold’s Collectors/Dehumidifiers) dating back to Greco-Roman times during the Byzantine Empire. These were strictly passive systems that naturally dehumidified air, collecting its potable water in underground basins. All air, even in relatively dry desert regions, will precipitate or release its natural water content (initially in the form of vapor) through condensation when it hits its dew-point temperature and below. That means you “chill” it to an appropriate level that is anywhere from 5F to 50F below its current air temperature, depending upon how much water content (relative humidity) it has locally absorbed. The condensation of the water vapor releases its internal latent heat (reheating the cooled air) which must be constantly dissipated (absorbed by something) in order for water formation to steadily continue. So how do we dissipate this resultant vapor-heat and chill our air without any infrastructure or electricity, in an underprivileged or disaster-ridden region? We simply bury a long cast-iron or any metallic drain-pipe sufficiently underground where the temperature of the earth is naturally held to a constant at around 45F to 55F. That’s our “free” chiller gift from nature. One end of the pipe, Figure-1,  sticks out of the ground to suck-in local outside hot air, and the other end dumps cooled dry air and water into an underground cistern where it gets collected and is piped to the surface to both exhaust the cooled dry air and connect to a water pump. We need a hand operated water pump to lift up the water above ground, and we need an electric fan to constantly pump air through the ground-chilled piping system. We can even force the cooled piped air to exhaust into a tent-like structure where it provides air conditioning as an added bonus, but this adds the penalty of both power and the increased fan size necessary to drive our required airflow further into an enclosure! While this concept is not “passive” (requiring electricity to work) like those clever Byzantine air-wells, it will produce much more potable water and within a smaller volume than those elegantly passive historic devices. The electricity for our fan power requirements can be produced by any one of four ways using either “active” or “passive” techniques: 1) An active playground or bike-pedaling-person or oxen-driven mechanism-generator, 2) A passive windmill generator, 3) A passive solar energy collection system that directly generates electricity, or 4) A passive thermo-electric system that directly generates electricity using the Peltier effect, operating solely on temperature differences between the cell’s top and bottom surface (we jury-rig the cool pipe and hot ambient air to contact separate sides of the cell). Depending upon how much water is needed, the required air volume plus pipe length and diameter, together with the fan will be sized accordingly. We can also configure groups of parallel fan-driven air pipes that are radially fed into the cistern. The sizing of this underground network depends upon the ambient air’s local average temperature and relative humidity (how much water gets absorbed into the air) plus buried pipe depth and effective underground temperatures achieved. The basic concept is one where we “wring” water from air at some given humidity content. The higher its relative humidity the more water is recovered from the air. The air-wringing process simply chills the air as it scrubs along the cooled internal pipe surface until it starts to rain inside the pipe from condensation onto its surface. The condensation is like the dew that forms on car windows, grass or any cooled surface in the early morning, before the sun comes out and evaporates the dew back into the heating air. A further bonus is that our dew-formed water is naturally distilled and very clean. It is potable water ready to drink without the need for additional sterilizing agents. Of course, we must make sure that the interior piping and cistern network is biologically cleansed before burying it underground. The hand pump with its 10 to 15 foot extended piping to reach the underground cistern must also be cleansed. The beauty of this constantly replenishable water supply is its convenient underground installation anywhere! After the in-ground installation, we have a virtual, partially passive, no moving parts, non-breakdown system containing above ground total access to all moving parts that could breakdown, namely the water pump and electric fan. Also, it is easily maintained, with few moving parts (water hand-pump and electric fan) and basically lacking any technical complexity which makes it ideal for technologically backward regions. The example below uses a relatively small industrial fan moving air at 1500 CFM (Cubic Feet per Minute) with a DC motor rated at 1kW. This fan together with our underground piping system will conservatively generate 12 GPH (Gallons Per Hour) of potable drinking water without need for any purification chemistry. Based on an average electrical cost of 14-cents per kWh (kilo-Watt hour), the typical commercial distillation of one gallon of drinking water costs roughly 35-cents as compared to our cost of only 1.2-cents. Furthermore, if we decide to go green and use solar energy for generating our water, it would effectively cost us nothing beyond the initial installation! USING A PSYCHROMETRIC CHART TO SIZE OUR WATER SUPPLY: The following gets a little technical and is only provided for those die-hards who are truly interested in how the science works. Those non-technically schooled may skip this part and not miss the basic concept. Figure-2 shows a Psychrometric Chart for air. This chart summarizes some of the basic thermodynamic properties of air throughout its typical range of operating temperature. The chart uses six basic air properties that defines the physical chemistry of water evaporation into air:  (1) the enthalpy or total energy contained within a unit of air which is a combination of its internal and external energy, expressed as the amount of BTU-energy per unit mass of reference dry-air, (2) the specific volume or the ratio of a unit volume of local air to its mass of reference dry-air, (3) the humidity ratio or the amount (mass) of moisture in a local unit of air divided by its reference mass of dry-air, (4) the percent relative humidity per unit of local air, or the mass ratio (expressed in percentage form) of the partial pressure of water vapor in the air-water mixture to the saturated vapor pressure of water at those conditions (the relative humidity depends not only on air temperature but also on the pressure of the system of interest),  (5) the dry-bulb temperature or the locally measured air temperature, and (6) the wet-bulb temperature or saturation temperature which is the local air temperature experienced during constant water evaporation (a wet-bulb thermometer is typically used:   a thermometer that measures resultant temperature while wrapped in a water wet-gauze and spun to generate local air movement and max-evaporation)  1.0   The Process and A Sample Calculation Our Psychrometric Chart uses six thermodynamic properties that help to determine the amount of water available for extraction from the local ambient air as a function of its temperature, pressure and relative humidity.  Let’s assume the following local ambient conditions for the region we plan to construct our water system at:  (1) Typical daily air temperature Td = 106F and one atmosphere pressure assumed at sea-level, (2) Relative Humidity, RH = 55%, and (3) Typical underground temperature down at six feet is measured at Tu=55F (at 12ft. it drops to ~45F). This yields the following calculated results for obtaining a steady-state supply (changes at night) of water to fill the cistern:      1)      In our example, the “local” air (dry-bulb) temperature is Td=106F, at a relative humidity of RH= 55%.  Fig-2 indicates that the resultant Humidity Ratio is HR= 0.0253 Lbs-water/Lb-Dry-Air (intersection of Td=106F line and RH=55% line, then horizontal to HR value).  We then determine the “gulp” of air volume containing the HR Lbs-water which corresponds to the point of intersection of Td and RH. Interpolating on specific volume “mv” yields mv=14.7 ft3/Lb-Dry-Air (this value sets the optimum unit airflow for our given ambient conditions, and creates a ballpark pipe length to diameter ratio needed later). It represents the basic unit of air volume that will enter our underground pipe per given time, and ultimately defines the size of our fan and piping network. For increased water creation, multiples of this unit volume will scale up the additional amounts of water that can be collected. 2)      As the inlet air cools down to a temperature of Tu=55F, from contact with the relatively cold underground pipe, we follow the constant enthalpy line (red upward left-diagonal) from the intersection of Td and RH to its saturated air temperature condition of Ts= ~88F, which is its dew-point temperature where the corresponding local RH=100%.  At this temperature or under, the air precipitates and releases its moisture content, resulting in water condensation onto the pipe walls.  Since our air will chill to a final pipe temperature of Tu=~55F, we follow the RH=100% saturated curve (green) down to yield an HR=~0.009 Lbs-water/Lb-Dry-Air. This is how much water is left in the air when it gets to 55F.  Therefore for every pound of local outside air that enters the pipe, mw=0.0253 – 0.009 = 0.0163 pounds of absolute pure, distilled potable water precipitates onto the inside pipe wall (per pound of dry air that is cooled and dehydrated) to gravity-flow out the pipe exit and into the cistern. 3)      We now convert pounds of air per unit time into a unitized volumetric airflow that yields gallons of hygienically pure potable water production per unit time. For every Va=100 ft3 of local volumetric air movement per minute (CFM) through the pipe, which translates into ma=Va/mv= 100/14.7 = 6.8 lbs. of dry air per minute or 6.8 * 60 = 408 lbs. per hour (PPH), to yield a water-flow of mwf=ma * mw = 408 * 0.0163 = 6.65 PPH or 6.65/8.345 = 0.8 GPH of water.  An industrial fan rated at 1kW DC will typically move 1500 CFM at a pressure of 8-iwc, to continuously produce 15 * 0.8 = 12 GPH of pristine potable water. 4)      Not shown here are the design details of sizing our pipe, fan and solar collection system for electric power requirements using heat transfer principles coupled with a thermodynamic heat balance, and aerodynamic fan performance assessment. These details help to size the electric power generation requirements plus margin used to properly size a solar collector containing further margins for overcast days. The engineering involved here is straight forward but beyond the scope of the current project.

Topic by RT-101 6 years ago  |  last reply 1 year ago


How do i wire a condenser mic into my audio input of my PC/Computer? Answered

Ok, I answered it myself but I looked long and hard so hear is one option for connecting a condenser mic to a pc. This is 20 year old microphone that shipped with my family's Apple LC in 1992.  The mic works well with one of my laptops audio card... Not sure what the Zenner diode value is but its probably pretty small. I measured the voltage across the mic + to ground and it was 3.5volts. I saw another guy that only found a diode on his condenser mic so maybe newer audio cards can work without all the extra parts...

Question by hydronics 7 years ago  |  last reply 7 years ago


Text display in Instructable PDFs

Why is the kerning (inter-character) spacing of the text in Instructables' PDFs so goofy? Not any of the heads, but all the text. I'm using Mac OS X 10.5 and the text font used is identified as Helvetica Condensed Bold Italic. Heads are Helvetica Bold (not Condensed) and they do display correctly. I do not have any problem on my system with Helvetica Condensed Bold Italic used in any other document and no problem with numerous PDFs from other sources. And, why not a simple Arial or Helvetica Regular or Plain for the text anyhow?

Topic by dlfuller 10 years ago  |  last reply 10 years ago


Help with electret microphone

Hi by checking some information and also some of the projects here, i realized that electet microphones are as good as studio condenser microphones and i was wondering if you can help me to create a condenser quality mic out of an electret element with schematics or actually a tutorial of how to do it the circuit and the pre-amp if necessary ... i got this "http://richard-mudhar.suite101.com/how-to-use-an-electret-capsule-with-p48-power-a150317"  can you check it out and tell me if it would work or give me some other ideas. thnx

Question by Markus03 7 years ago  |  last reply 7 years ago



Can you freeze dry food at home?

I would like to know how to freeze dry food. Could some create an Instructable How-To,... Can someone build a machine that freeze dry food? There are essentially three categories of freeze-dryers: the manifold freeze-dryer, the rotary freeze-dryer and the tray style freeze-dryer. Two components are common to all types of freeze-dryers: a vacuum pump to reduce the ambient gas pressure in a vessel containing the substance to be dried and a condenser to remove the moisture by condensation on a surface cooled to -40 to -80 C (-40 to -112 F). The manifold, rotary and tray type freeze-dryers differ in the method by which the dried substance is interfaced with a condenser. In manifold freeze-dryers a short usually circular tube is used to connect multiple containers with the dried product to a condenser. The rotary and tray freeze-dryers have a single large reservoir for the dried substance. Thank You

Topic by acomisp 7 years ago  |  last reply 7 years ago


Most efficient way to recover heat from 130 degree F water and transfer this heat to 140 degree F water?

I am making a solar still and I need to recover as much heat as I can from the 130 degree F water (bringing the water temp down to near ambient, 72 degrees F) and then transfer this heat to 140 degree F seawater. I have a limited amount of solar collectors to heat brackish water, send it through an evaporator tower and then a condenser tower to make fresh water. As the fresh water goes through the condenser it gains a great deal of latent heat, thus the 130 degree F water. In order to increase production and regain otherwise lost energy I am trying to recapture a portion of this heat to further warm up the brackish water (currently at 140 degrees after exiting the evaporator tower) before being further heated with the solar collectors. I am operating off grid, so the solution must utilize solar heat or PV panels as the power source.  Does anyone know of a heat pump that operates best in this temp range? What about using TEC (aka TEG, TEP or TEHP) to perform this task? Is there a better or more obvious solution that I am oblivious to? Any advice would be much appreciated. 

Question by MichaelMichael 5 years ago  |  last reply 5 years ago


can i build a dual turbine which is powered by steam which is condensed and released like a water wheel. would it work?

If I build a steam turbine powered by burning waste using a pelton turbine then the steam will travel upwards. if I condense and store it, then release it past another pelton turbine to restart the cycle then will it be equally efficient. assuming the fuel source is free can this be practical in terms of electricity generation?

Question by mrgre99 10 years ago  |  last reply 9 years ago



Fitting a hydrogen/oxygen reactor into a thermos? Or at least in a container about the size of a birdbath stand? Answered

EDIT: I decided that starting with steam instead of hydrogen would be much more efficient, much safer, simpler, and cheaper than reacting hydrogen. So if anyone knows if there is a way I can compress steam in a canister and not have it turn to water, and where to get the supplies for relatively cheap, that would be great! Merci! So my last question was how to bond hydrogen and oxygen to make water and condense it, and I got how to do that, but how hard would it be to fit this whole thing into a homemade thermos that has a screw-on hydrogen canister on the bottom? The hydrogen storage would be outside of the thermos in the canister, but there's still the reactor, condenser, and pressure release valve for safety. How hard would it be to fit it into the thermos (the thermos is about 1.5-2x the height of a store-bought thermos and about the same width, maybe a little bit wider)? If that isn't possible or logical, how about a birdbath stand? It would be a wide PVC tube reminiscent of a stone birdbath support, and would have a basin on top that contains the water after exiting the condenser. 

Question by ALogan97 7 years ago  |  last reply 7 years ago


how to change my small tractor magnet to 12 volt condenser coil?

My old tractor work with magnet but i need to make it work better

Question by 9 years ago


Locker Size Mini Freezer

I have an empty locker in my office (2.5 cu. ft) and it gave me an idea to use that space as a freezer. I know how a freezer works, but my question is it is feasible to gut out a used mini fridge and reassemble it in a small space? Since there's a shelf in the locker,  I was plannign to run the evaporation coils underneath it,  line the edges of the locker with Dow foam, fit the condenser in the corner, and the condenser coil on the inside of the door.

Topic by wbgeek 7 years ago  |  last reply 7 years ago


solar powered junk yard air conditiong idea.

Well im stringing togett some ideas ive seen into something green. first the idea i saw the cold water well ac unit, but too much water use to have one constantly run. so i thought a cycling pump, with a tank buried underground. for that too work the water being cycled though must be kept cold as it continues to cycle through. tank idea - something like 2-3 window ac condenser units piped together to fit inside a 50 gal drum. fill the drum with sand and water burying the condensers. the unit would be a condenser with a small water pump and a fan. i've seen small 12 solar battery chargers, would that be enough to run the pump and the fan for extended times say 4 hours a day is this possible or am i over estimating some things

Topic by Dan Nugget 10 years ago  |  last reply 10 years ago


TEMP HELP!!!! Answered

Do i set the temp at 210degF (boiling point 212degF) or adjust temp to 173degF? I know 173 & 212degF points on my stove from previoius runs.  How cold does the temp of the condenser need to be? 

Question by witherspoon520 9 years ago  |  last reply 9 years ago


Insualtion of an existing tin roof?

Hi, I have an existing summer room with a single skin, 4" corrogated tin roof. It is attached to the roof of the home and I do not wish to rip it apart. I was thinking to install a none bearing set of 4"x2" timbers, a half in from the existin roof, then insulating with 1" x 4'x8' sheets of styrafoam sheets, then a vapour barrier nder this. My main concern is the condensation produced on the inside of the tin roof, when it warms up. If I insualet the way I,m intending to,will this stop this condensation or do i need to do more to prevent it.

Question by grandpa2011 7 years ago  |  last reply 7 years ago


Peltier dehumidifier

I hope someone with a technical background can help me with this... I am trying to make an DIY dehumidifier. The goal is to lower the humidity of my room during the summer months (humidity is around 70% at 25C) to less than 50, preferrable 30%. I have the following setup in mind: To achieve condensation I want to use a peltier that will lower the temperature of an radiator. The condensed water will be gathered in a (plastic) box. This water will then be used to cool the hot side of the peltier, using a water block and a waterpump that was left over after using watercooling on my PC. The image depicts an simple graphic of the setup. However, I have the following questions to be answered: - How cold (relative to the ambient temperature) would the cold-side radiator have to be to get optimal condensation - How much watts of cooling power would the peltier need in order to achieve the needed temperature difference - If i lower the cold side temperature with 20C, how much heat would be generated on the hot side? (my gues: 20C, but im no genius ;) ) Thanks in advance!

Topic by pelzinga 5 years ago  |  last reply 5 years ago


I would like to know how to decorate a strawberry shortcake pan cake.

The top is white (cream cheese, sweetened condensed milk & whipped cream). How do I cut the strawberries to look decorative? Thank you

Question by 10 years ago  |  last reply 9 years ago


Sorry for the crosspost, but got my solar thing working, posted it on Green.

Just in case you guys don't hang out in Green.If you're lazy:https://www.instructables.com/community/Finally-finished-my-solar-collector-prototype/

Topic by SolarFlower_org 9 years ago


How to pass sound from microphone to earphone

Hi, I need a simple way to pass sound from Condenser microphone though wire and some circuit to one or pair of earphone to be heard, live, just a simple communication tool, is there an instructable for this or please give me exact steps . Thanks .

Question by achraf52 6 years ago  |  last reply 6 years ago


dos any one know were to buy cheep laboratory equipment in The GTA or grater Toronto Area?

I need a: Hotplate, water condenser, three way adaptor,vacum adapter, claisen adaptor, three neck flask,sepparation funnel,dry tube, a flask, distilation colum,and a capillary with fine outlet.

Question by dciocoiu 9 years ago  |  last reply 9 years ago


How to detect audio frequencies in the ranges of 190hz, 250hz and 285hz. Thanks!? Answered

What are the advantages/disadvantage of using this LargeMouthBass' PIC processor/code over a LM567 Tone Decoder? I might use an Aruduino or another IC to command the PIC(or 567) and to output to a couple of LEDs as visual indicators...

Question by hydronics 7 years ago  |  last reply 7 years ago


Can convection be used to drive a passive dehumidifier?

Ok, I have a couple of radiators and a greenhouse that is too humid. In winterr can convection drive fluid from a radiator mounted low in the warm greenhouse to a second radiator mounted outside in the cold and then back to create a chilled metal radiator that will have water condense on it and drip into the soil.

Topic by drewgrey 8 years ago  |  last reply 8 years ago


graffiti and permanent posters

Hey all graffiti guys. My son and I are doing some poetry terrorism in our town. We were looking for quick ways of putting up poetry on public buildings. But we got an information windfall. Some guy in a pub told us that a poster put up with condensed milk could never be removed. Anyone ever hear of that?

Topic by maninamousesuit 11 years ago


DIY dehumidifier design?

This is my first real foray into DIY so help me out here. My original design, which didn't work very well, was to fill some coiled-up tubing with the gel from that blue ice stuff you use to keep lunchboxes cool, then mount that  near the top of a bucket and keep a fan running over it to blow moist air onto the cold tubing and, theoretically, it would condense out. When I left in the morning it was definitely getting lots of condensation, and I even saw a bit dripping off into the bucket, but by the time I got back in the afternoon the whole thing was bone dry. Is there any way to make this freezer-gel-tubing idea work? I think part of the problem was that I used rubber tubing, not thinking about how it acts as an insulator, and I also suspect that keeping a fan on it did as much harm as good what with the whole evaporation thing, but I thought real dehumidifiers used fans too... Ideas?

Question by TheJenx 8 years ago  |  last reply 8 years ago


How can I more efficiently use space while laser/plasma cutting? Answered

I've made a number of plans in 123d make, but there is so much empty space that becomes unusable for future projects.  Isn't there some way to "condense" a .dxf so it has a smaller footprint?  I don't care if the angle is weird or whatever, I just know that there has to be a far more efficient way to use up material.

Question by furrysalamander 4 years ago  |  last reply 4 years ago


Threading and pitch for Microphone mount nut or stem? Answered

Does anyone out there know the threading and pitch for a standard condenser mic stem? I lost my mounting nut and even the manufacturer won't provide the info I need. It's a Presonus M7. It should have a standard threaded stem as most universal mounts fit it. I know it's metric, Possibly an M20 or M22 with a #1 pitch. Anyone know for sure?

Question by Sparkytastic 2 years ago  |  last reply 2 years ago


Please help with repairing my LED light bar there are a total of 60 1w leds but 2 sets of 3 LEDs are dimmed.

I was wandering if you could give me a bit of advice on repairing my LED roof light bar, there is issue with 2 sets of 3 LEDs. there are a total of 60 3w leds and for some reason (probably condensation) 2 sets of 3 LEDs (one in the middle and one in the end) get dimmed. Any advice would be greatly appreciated.

Question by survivel82 4 years ago  |  last reply 2 years ago