THERMOCOMPRESSOR PLANT Russian patent published in 1995 - IPC

FIELD: heat supply. SUBSTANCE: thermocompressor circuit uses, for example, carbon dioxide, which after compression in the compressor is in the supercritical state, and each heater of the low- and high- temperature circuits of heat-transfer agents is made as a double-stage heat exchanger, and the heater of the medium-temperature circuit is made as a three-stage heat exchanger connected in succession in the direction of flow of heat-transfer agents; the delivery line past the compressor is connected to the second-stage heat exchanger of the high-temperature circuit after which it is branched out into two branches, one of which is connected to the third-stage heat exchanger of the medium-temperature circuit. At the outlet of the heat exchangers both branches are interconnected and connected to the second-stage heat exchanger of the medium-temperature circuit after which it is separated in two branches in such a manner that one branch is connected to the first-stage heat exchanger of the medium-temperature circuit, and the other - to the second-stage heat exchanger of the low-temperature circuit. At the outlet of the heat exchangers both branches are interconnected and connected to the first-stage heat exchanger of the low-temperature circuit. Besides, additionally installed are crosspieces with shutoff valves between the working medium outlet of the second-stage heat exchanger of the high-temperature circuit and inlet of the third-stage heat exchanger of the medium-temperature circuit, as well as between the working medium outlet of the first-stage heat exchanger of the medium-temperature circuit and inlet of the second-stage heat exchanger of the low- temperature circuit, as well as between the heat-transfer agent outlet of the low-temperature circuit and inlet of the medium-temperature circuit, between the outlet of the medium-temperature heat-transfer agent and inlet of the low-temperature user, between the outlet of the heat-transfer agent of the medium-temperature circuit and inlet of the high-temperature circuit, heat-transfer agent outlet of the high-temperature circuit and inlet of the medium-temperature user, heat-transfer agent outlet of the high-temperature circuit and inlet of the low-temperature user. EFFECT: reduced expenditures connected with the drive of the thermocompressor at simultaneous improvement of ecological safety. 2 cl, 3 dwg, 1 tbl