The high pressure liquid hit from the condenser travels through the small diameter capillary tube it then hit the larger diameter of the evaporator which causes the high pressure liquid to change to a low pressure gas as it passes into the evaporator. The expansion of the liquid to gas causes the temperature to drop and to cool the evaporator. Air passing over the evaporator is cooled and gradually the temperature inside the fridge freezer cavity will drop.
Its normal to see the evaporator covered in a layer of frost so this is no an issue.
The evaporator has fins all over it to maximise surface area and to aid in heat absorption.
Not much can go wrong but over time the constant cooling and warming cycles and associated expansion and contraction of the metals can cause leaks to occur. Its a regular thing to see damage to the evaporators after DIY attempts to speed up the defrosting.
No comments:
Post a Comment