Recovery: fridge turned into a heat pump?

[PITMIX]

Hello
The COP of the modern household refrigerators is very good but the power is really very low.
Imagine the opposite use of the heat pump. It is not leaving the fridge door wide open that we will cool a room.
The energy produced by the condenser (hot) is larger than that of the evaporator (cold) but not sufficient.
Try instead to retrieve a group of refrigerators from a small cold room.
The interest would be to have ventilated exchangers and an acceptable power (2kW).

[Capt_Maloche]

This is true for the powers, and complicated if you have in addition a negative box

A recent mid-size household refrigerator fires between 100 and 150W with a COP that I estimate to 3 with a T ° at the evaporator of 0 ° C and and a T ° at the condenser of 45 ° C

it should allow you to recover between 400 and 600W depending on the external conditions, but complicated to do if you do not want to touch the circuit ...

Rather get the compressor to inflate your bike tires and balloons

[Christophe]

Oula jme remembered even more of this subject (cf subject drum paddle) while I participated in 2008!

[chatelot16]

the refrigerators are all R600a for a long time, including those that I see go to scrap

there is no problem to reload after modification, because the R600a is over-the-counter: it's butane! or more exactly isobutane, one of the isomers that can be found in the mixture that is ordinary butane

the problem is not in the filling but in the low power of an ordinary refrigerator ... but finally as these old refrigerator does not cost anything we can use several compressor

be careful to measure the performance because a defect that often goes unnoticed is a half-used refrigerator compressor that consumes much more electricity to make less cold, but as many refrigerators have power rab it goes unnoticed for whoever does not put an electric meter to monitor his refrigerator

in the genre I saw a freezer that seemed to work well on the 220 of the EDF, but which was a lamentably painful generator: it consumed much more than its normal ... but if I had not had the need to make him walk with a group we would not have known that it was an energy waster

car air conditioning is more powerful than refrigerators but less optimized in performance: on a car the mechanical power is abundant, a few kW more or less the owner does not see the difference: the optimization of air conditioning is not the same. search for yield but the optimization of the clutter to get into the hood of the car

[Capt_Maloche]

Hi, you can also make an air compressor for mattresses and various boring stuff to put in air

[oli 80]

Hi, you can also make an air compressor for mattresses and various boring stuff to put in air

Good evening, here is a subject or we talk about it Waste-and-recycling / recovery-spare-parts-electromenager-t10123.html

cordially