The air compressor waste heat recovery machine is an energy-saving equipment, which uses the high-temperature oil and gas heat energy of the compressor to make full use of the heat energy through heat exchange. Due to the design structure and working principle of the air compressor waste heat recovery machine, its adiabatic efficiency is between 0.65-0.85. The design oil supply temperature of an air compressor is usually 50-60°C, and the exhaust temperature in actual operation is usually between 80-90°C. Higher exhaust temperature will produce more lubricating oil in the gas phase, increasing the difficulty of oil-gas separation and reducing the service life of lubricating oil. In addition to the thermal energy loss caused by mechanical friction, this is mainly the thermal energy loss caused by the thermal energy conversion of the air compressor waste heat recovery machine when compressing the gas. The adiabatic efficiency of the compressor is only 60-80%. In the actual operation of the air compressor, only 10% to 20% of the energy becomes air potential energy.
The air compressor waste heat recovery machine uses the high-temperature oil and gas heat energy in the compression process, and transfers the heat energy to the normal temperature hot water through heat exchange to realize the utilization of heat energy. The motor drives the screw machine to rotate, and the air is sucked into the screw compressor through the filter and compressed into high-pressure air, which is mixed with circulating oil to form a high-pressure and high-temperature oil-gas mixture and enters the oil-gas separator. After separating the oil-gas mixture into oil-gas and air, the compressed air in it is dissipated by the aftercooler and provided to users. The circulating oil and gas are separated in the oil and gas separator and condensed into a liquid state. Then through the front cooler for heat dissipation and filter filtration, return to the compressor to complete the cycle process. The air compressor waste heat recovery machine can introduce high-temperature circulating oil (and high-temperature compressed gas) into the hot water unit. The heat generated during the operation of the air compressor waste heat recovery machine can be completely absorbed by the hot water heater, so that the compressor can be cooled.