초록 ▼

A waste heat recovery system for use with refrigeration means and a hot water reservoir is disclosed. The system is intended for use with refrigeration means of the type including a compressor and a condenser through which a compressible refrigerant is circulated. The system includes a heat exchange

A waste heat recovery system for use with refrigeration means and a hot water reservoir is disclosed. The system is intended for use with refrigeration means of the type including a compressor and a condenser through which a compressible refrigerant is circulated. The system includes a heat exchanger having a refrigerant passage and a water passage mutually coupled in heat exchange relation. A heat exchange circulation conduit connects the water passage of the heat exchanger in fluid communication with the hot water reservoir to permit water to be circulated from the reservoir to the heat exchanger and return. A fluid flow restrictor is connected in series fluid circuit relation intermediate the compressor discharge outlet and the condenser for producing a pressure differential. The refrigerant passage of the heat exchanger is connected in parallel fluid circuit relation with the fluid flow restrictor. The pressure differential created by the fluid flow restrictor causes flow of high pressure heated refrigerant vapor through the refrigerant passage for heat exchange purposes. The degree of restriction can be changed to divert more or less of the flow of the high pressure refrigerant vapor through the heat recovery system, thereby permitting a relatively small waste heat recovery system having a high fluid flow impedance to be used in combination with a large refrigeration compressor.

대표청구항 ▼

In a heat recovery system for recovering waste heat from refrigeration means to heat water supplied to a hot water reservoir wherein said refrigeration means includes a compressor having a discharge outlet for circulating a compressible refrigerant, and said heat recovery system comprises heat excha

In a heat recovery system for recovering waste heat from refrigeration means to heat water supplied to a hot water reservoir wherein said refrigeration means includes a compressor having a discharge outlet for circulating a compressible refrigerant, and said heat recovery system comprises heat exchanger means having a refrigerant passage and a water passage mutually coupled in heat exchange relation, said refrigerant passage being connected in fluid communication with the discharge outlet of said compressor, and a conduit connecting said heat exchanger water passage in fluid communication with said reservoir to permit water to be circulated from said reservoir through said heat exchanger and return; the improvement comprising: (a) a by-pass conduit connected in parallel fluid circuit relation with said refrigerant passage and having its inlet in fluid communication with the discharge outlet of said compressor, thereby enabling refrigerant exiting the discharge outlet of the compressor to flow through both the heat exchanger refrigerant passage and the by-pass conduit; and (b) a fluid flow restrictor disposed within said by-pass conduit, said restrictor effective to impede, but not prevent, refrigerant flow through said by-pass conduit.