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An engine-driven refrigeration unit includes a first heat exchanger functioning alternatively as a refrigerant condenser or as a refrigerant evaporator. When the heat exchanger is functioning as a refrigerant evaporator the heat transfer medium furnished thereto for providing a source of heat to vap

An engine-driven refrigeration unit includes a first heat exchanger functioning alternatively as a refrigerant condenser or as a refrigerant evaporator. When the heat exchanger is functioning as a refrigerant evaporator the heat transfer medium furnished thereto for providing a source of heat to vaporize the refrigerant is preheated by absorbing heat from a relatively warm fluid employed as the cooling medium for the engine driving the refrigeration unit.

대표청구항 ▼

An engine-driven refrigeration unit including a first heat exchanger functioning as a condenser in a first operating mode and as an evaporator in a second operating mode of said refrigeration unit comprising: means for delivering water from a source thereof to said first heat exchanger for condensin

An engine-driven refrigeration unit including a first heat exchanger functioning as a condenser in a first operating mode and as an evaporator in a second operating mode of said refrigeration unit comprising: means for delivering water from a source thereof to said first heat exchanger for condensing refrigerant vapor delivered thereto when said heat exchanger is functioning as a condenser, and for vaporizing refrigerant when the heat exchanger is functioning as an evaporator; a second heat exchanger connected to a source of relatively warm fluid; a conduit connected to said first heat exchanger for delivering said water to said second heat exchanger to pass in heat transfer relation with said relatively warm fluid to increase the temperature of said water; discharge means connected to said second heat exchanger including valve means having a first position for directing the water from said second heat exchanger to the source thereof and a second position for directing the water to the inlet of said first heat exchanger; and means for placing said valve means in said second position when said first heat exchanger is functioning as a refrigerant evaporator.