Feed Water Heating System

摘要

Feedwater to be supplied to a feedwater tank via a feedwater path is passed through a waste heat recovery heat exchanger, a supercooler, and a condenser in sequence. A heat source fluid such as heat source water is passed through an evaporator and the waste heat recovery heat exchanger in sequence. The waste heat recovery heat exchanger is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and the heat source fluid having passed through the evaporator. The supercooler is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and a refrigerant supplied from the condenser to an expansion valve.

主权项

1. A feedwater heating system comprising:
a heat pump in which a compressor, a condenser, an expansion valve, and an evaporator are connected in sequence in an annular manner to allow a refrigerant to circulate, the heat pump drawing heat from a heat source fluid that is passed through the evaporator, the heat pump heating feedwater that is passed through the condenser; and a feedwater tank that can be supplied with the feedwater from a feedwater path through which the feedwater is passed through a waste heat recovery heat exchanger, a supercooler, and the condenser in sequence, wherein the waste heat recovery heat exchanger is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and the heat source fluid having passed through the evaporator, and the supercooler is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and the refrigerant supplied from the condenser to the expansion valve.