Natural defrost of a simple cold room

Natural defrost is generally used in refrigeration systems whose internal chamber temperature is positive, ie above 0 ° C (freezing point of water under normal pressure). This defrosting is performed by promoting compressor shutdown by keeping the evaporator air forcing on, thereby ceasing the cooling effect of the refrigerant since it does not circulate. As the forcers remain connected the air circulation by the fins of the evaporator is maintained thereby providing the necessary heat so that the formed ice melts, melts, and is drained to a tray, and then drained through an outward piping the camera.