In cosmetics, the most common use of acetone is in nail polish remover. Acetone is a colorless, flammable liquid that evaporates easily. It is an organic compound because carbon atoms are present in acetone's chemical formula, which is (CH3)2O.
Swenson thermal vapor recompression (TVR) evaporators use a thermocompressor to reduce the steam required per pound of evaporation. To reduce energy consumption, water vapor from an evaporator is entrained and compressed with high pressure steam in a thermocompressor so it can be condensed in the evaporator heat exchanger. The resultant pressure is intermediate to that of the motive steam and the water vapor.
Most modern frost-free refrigerators will have a fan cooled condenser coil. This normally located near the compressor at the bottom rear of the refrigerator. The condenser fan circulates air through the condenser coil to remove heat as well as circulating air over the drain pan to evaporate the defrost water. If your fridge is making a loud noise, the condenser fan motor could be to blame. The condenser fan motor runs at the same time as the evaporator motor and the compressor. In addition to noise, your fridge might not be staying as cool as normal and/or may be turning on and off regularly.