Introduction: An Idea to Increase the Efficiency of Solar Panel and to Research on the Air Conditioning System From Same Solar Panel Itself.


We know that solar panel is one of the best thing that we are encountering today, but there efficiency is restricted to around 20% for residential solar panels.

So, How we can increase the efficiency of solar panel?

And get as much as energy we can.


1) Solar energy consist's of Light and heat, we can use light to produce electricity and Heat to generate hot water, If we focus the sun light on solar panel than we can increase the output of wattage from it, At the same time when sun rays are focused on solar panel it will get heated up and decrease the efficiency so to balance it we will pass water from the back side of the solar panel which will reduce the temperature and increase the efficiency of panel more further.

2) the project we will gone a do should be of low cost and our aim is to maximize the output with the minimum cost of input which will result in a great economical benefit.

Step 1: Choose a Solar Panel

In this project we are using a 5W noncrystalline solar panel which cost me around 5$ .

Most of the time a solar panel is working well below peak power, on hazy days and when the sun is lower in the sky, early morning, late afternoon for example. The light levels are just not high enough, so to boost the light level I tried aligning a mirror to reflect more light onto my solar panel. It worked really well and after a bit of experimentation I found that placing a mirror at least twice the size of the solar panel on the ground in front of the panel could boost the output by as much as 60%.

Using a bigger mirror can reflect light onto your panel over a longer period during the day so you don't need to track the sun, just face your panel and mirror due south.

1) first we will focus the sun light on the solar panel surface through mirror Which cost me around 0.34.

So let's see how it works, If it works fine than we will note the temperature of panel and find the temperature of it at peak time.

Step 2: Experiment With Solar Panel and Mirror

I bought a really cheap solar panel for 5$ to test this idea, above are some pictures showing what I did and the meter readings just to show that it really does work. Pictured below is the 5w solar panel facing south just placed on a Floor. The meter is showing amps, that's approximately watts, it's late August and even on a very sunny day the panel is only producing just over half it''s peak power.

In the picture above you can see how the mirror reflects light onto the solar panel. The panel produced amps, about watts, very close to the maximum rated output for this panel.

If you use a large mirror there is no need to align it to reflect light onto the solar panel just drop it on the ground in front of the panel for an instant 60% power boost.

This is probably one of the cheapest and easiest ways to boost the power of a small solar panel, but this method does have some limitations:

You can use more mirrors to reflect more light onto the solar panel and increase it's power further but on a sunny summers day the extra light can build up a lot of heat that may damage the panel. In July I had my 1.5w panel running at double its rated power for twenty minutes, it got so hot you couldn't touch it!

Placing mirrors either side of the panel to reflect doesn't work well because as the sun moves west it will cast a shadow across the panel. The only place that the mirror won't cast a shadow at any time in the day is on the ground in front of the solar panel.

On a dull day the mirror doesn't give much of a power boost at all, I tested a panel on a dull day in October; it produced 2% of its rated power, adding a mirror made no difference.

Step 3: Transferring Heat From Solar Panel to Water

Now we have to reduce the temperature of solar panel to increase its efficiency ,We can do the needful with the help of water.

we know that solar panel is sealed well and do not allow the water to go within , But to be on a safer side we will put Thin Layer of wrap film, Which we use to wrap food. ( NOTE: we have to wrap it really well without stretching it.)

Now we have to take copper or aluminium pipe which we will assemble at the back side of the solar panel through which we will pass the water,Note ( The thickness of the pipe should be minimum to prevent the loss of energy)

When installation of pipe is done at the back side of the solar panel, We will arrange for the "Phase Changing Material"

PCM : This material stores the heat in to itself and changes its phase from solid to liquid and when the surrounding temperature falls down it releases the heat and again change its phase from liquid to solid.

I am using (PCM) Paraffins, typically, are derived from petroleum and have a waxy consistency at room temperature. Their melt point temperatures range between -8°C and 40°C. They have good thermal storage capacity and are proven to freeze without supercooling. They also have the advantage of chemical stability over many heating and freezing cycles. They are non-corrosive and are compatible with most encapsulation materials. But they have a limited range of melting points and their cost is linked to unstable petroleum prices. And, like all fossil fuels, petroleum has significant environmental costs. Many paraffins are hazardous to health and the environment. Some can injure skin, eyes and mucous membranes. Some have narcotic effects if inhaled. Hexadecane, a petroleum alternative to PureTemp 18, is one example.


but you can use the water based PCM.( It will work gud)


Now we are utilizing as much as energy we can, and we can increase its efficiency further by connecting a whole new setup for conditioning air.

I will share the brief idea with you about air conditioning but will make it in coming few months as few of my calculations and simulations are left.

Step 4: Overall Diagram to Conclude About the Invention ( PATENT PENDING)

The process begins with a typical solar hot water system. Water is heated by solar panels and stored in the hot water tank.

This solar hot water can then be used throughout the home, reducing the need for gas or electricity. A portion of the hot water is diverted into new solar air conditioning unit, which is divided into two compartments. The hot water enters a heat exchanger in the first compartment of the unit. Similar to a car radiator the heat exchanger uses the hot water to heat outside air that has been drawn into the first compartment through the vent. At the same time outside air is also being drawn into the second compartment into a desiccant wheel. The desiccant wheel is the most critical part of the system. It is used to dry out the air before it goes into the house. Slowly turning the desiccant material in the wheel continuously absorbs moisture in the second compartment and then the absorbent material dries out in the first compartment. The desiccant material is dried out using the hot dry air generated by the heat exchanger. This air is then exhausted outside the home. The dry air from the desiccant wheel flows through an indirect evaporative cooler which creates a stream of cool dry air.This cool dry air is then fed into the home in order to cool down the rooms. In winter the solar heated air can be used directly to warm the cooling system is a low emissions alternative to conventional air conditioning and gas or electric powered heating,

i started with a project just to show that how we can increase the current output of panels but i thought to share this idea as well.

So for this invention we will only use 250W solar panels which are huge in sizes and than will create a model which is durable and accommodate less space, i will share the whole project once again as soon as i made it .

thank you


BenC37 (author)2016-10-11

indeed the panels work better when cooler, and water is an easy way to use some of the heat, while efficiency as a water heater is minimal it is handy to have some warm water, and having more power to say use with a 12V pump as a roof rack shower for the kids is great, especially at the beach, camping, or anywhere they may need washed off, like everywhere.

Mjtrinihobby (author)2016-10-05

The reason why no manufacturer or installer does this is because it is extremely inefficient. How did this guy come up with "An idea to increase efficiency"? What is he smoking?

HansS33 (author)2016-09-09

You are not very clear about the thermal conductivty of the connection of the copper pipe at the rear of the PV-panel. You write about a wrap film and th drawing according Fig. 6 is a aluminium plate, what somehow ist in contact with the copper pipe. What is your experience with this coolingpriciple of the PV-panel?

UtkarshS8 (author)HansS332016-09-19

HI hans s33

Thank you for asking question related to your doubt,

i am a student of mechanical and automation engineering,

i wrote this instructable to give an idea related to the invention but if you will look our project report which is highly detailed, than you will get to know about the things,(which i will share after 2 months)

in our project we are fabricating our own designed solar panel , pipes fitting, desiccant wheel, etc

so please wait for 2 months, i will surely share the detailed write up with you all.

Thank you

Mjtrinihobby (author)UtkarshS82016-09-29

To a lot of us, you appear to bluff you way with your published works.

HansS33 (author)UtkarshS82016-09-19

Hello UtkarshS8,

I am a professional on solarenergy. Things you write is not very new and I doubt if you will get a patent for it. But, if you would have a patentable new knowledge, you should not publish anything. Pubishing, even by the inventor itself, block getting a patent.
My remarks are that you are not clear, how to build together. This is what is for. To make it possible to make simple designs by DIY, even when not very professional or efficient.
Giving you a tip: You have to make a balance in guiding the thermal energyflow from the back of the PV-cells to the water-outlet. Every unbalance cause a loss in energy.

Mjtrinihobby (author)HansS332016-09-29

You are totally correct. This author writes a lot of nonsense.

UtkarshS8 (author)HansS332016-09-19

Thank you soo much sir

i appreciate your comment and will truly work on it,

as you are professional so i can take your help in cases which are complicated.

Thank you

HansS33 (author)2016-09-19

You are welcome. When you need advice, what can not be spoken on this website, you can mail me. .

UtkarshS8 (author)HansS332016-09-19

Thank you sir ,sure i will send you a mail with the issue ,hope to build a gr8 bond with u sir.

ClintL2 (author)2016-09-08

Congrats on the writeup! I would, however, recommend doing a thorough patent search before applying for one. Both of these technologies (desiccant wheel, pcm storage of solar heating) have been demonstrated in solar home competitions performed by uni's here in the USA.

UtkarshS8 (author)ClintL22016-09-08


I appreciate your research work, but in this project some of the technology in water tank , desiccant wheel , mixture of PCM with other hydrocarbons is not mentioned, so will declare all such things once it is published.

Thank you

stechi (author)2016-09-08

Interesting! But if you have enough space for a mirror, wouldn't it be better to put in another solar panel? Depends on the relative costs, but I don't have the data to work it out. Also, both the mirror and the panel stop the space from being used to grow crops which absorb CO2 and store energy in a neat way - has anyone done the sums on that alternative?

UtkarshS8 (author)stechi2016-09-08


We have used mirror to save the extra cost of solar panel, if we have used the solar panel instead of mirror than it would have cost us $4.4 expensive and if we will talk about a big project than the cost can go in thousand's.

Our team is also working on the co2 separator , which will eliminate the co2 content from atmosphere and will give powdered carbon and oxygen.

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