3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

how does a conduction freezer change electric current into cold air ?

the freezer in question has no fan only a system of "pipes that form frost on their surface. I was wondering if the "pipes" or metal tubing contained a liquid. if so what liquid?

1 answer
Jul 1, 2009. 12:30 AMthermoelectric says:
What type of freezer? Does it make noise or is it silent?

If it makes noise/has a compressor, It uses a gas compressed then cooled using ambient air, The gas then passes through an expansion valve which turns it into a very cold liquid (I think it's a liquid). It then repeats the cycle. (More info on that see here)

If it is virtually silent it is Thermoelectric cooling, Thermoelectric cooling uses the Peltier effect to create a heat flux between the junction of two different types of materials. This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. (see more here)

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!