Refrigerator






The refrigerator works like a heat pump. The compressor pushes the coolant with high pressure into the condenser on the rearside. The condenser becomes warmer.

Further to the throttle valve and in the evaporator. At low pressure vaporizes the coolant even at -30 degree Celsius and withdraws warmth from inside of the refrigerator.

In the small gap behind the refrigerator had been even 33 degree Celsius.

The efficiency of a heat pump depends from the temperature difference between cold and warm side. The construction with the condenser on the rearside in a small gap is not optimal. 		  Refrigerator The refrigerator works like a heat pump. The compressor pushes the coolant with high pressure into the condenser on the rearside. The condenser becomes warmer.


  Warmth in a house inuslation and cold bridges


It's possible without expensive infrared camera. Already with a 25.-EUR infrared thermometer, It's possible to investigate thermal insulation and cold bridges in a house.

Infrared thermometer Infrared thermometer
We go on our thermal discovery journey with this infrard thermometer. Push the button the measure the surface temperature.


Roof window Roof window
Good visible, the frame of the window is the worst cold bridge. So is at a window the u-value for the glass and the complete window listed.


External wall temperature External wall temperature
Left from the window is an internal wall, right from the window the front door. At an older not so good insulated house would be the external wall colder.


Morning sun in winter Morning sun in winter
No effect has the deep standing morning sun in winter on the white wall.The higher temperature above is by the floor heating.




Context description:  refrigerator fridge refrigerators fridges
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