Piston-type high-temperature heat pump device for waste heat recovery

Abstract

The invention provides a piston-type high-temperature heat pump device for waste heat recovery, and belongs to the technical field of heat pumps. The device is composed of a high-temperature heat pump unit, a high-temperature hot water loop and a low-temperature cold water loop. By the adoption of a two-stage compression and two-stage throttling piston-type refrigerating cycle, the compression ratio of the unit is reduced, the working conditions of the unit are improved under a high-temperature working mode, the efficiency of the unit is improved, and large-span temperature rise is achieved. Compared with the prior art, a high-temperature heat pump is adopted for replacing a boiler for heat supply, primary energy is saved, energy consumption is reduced, and the benefit of environmental protection is remarkable. Simultaneous heat and cold supply is adopted for the high-temperature heat pump device, so that equipment energy consumption in industrial production is further reduced, and the energy-saving effect is remarkable. Two-stage compression and two-stage throttling is adopted for a heat pump cycle system, so that the compression ratio is reduced, the working efficiency is improved, the working environment of the unit is improved under the high-temperature working mode, and the service life of the unit is prolonged.

Description

technical field [0001] The invention relates to a piston-type high-temperature heat pump device, which belongs to the technical field of heat pumps, in particular to a piston-type high-temperature heat pump device for waste heat recovery. Background technique [0002] In traditional industrial production, high-temperature hot water is basically provided by coal-fired, gas-fired, and oil-fired boilers, which have the following problems: the use of boilers will cause many problems such as high energy consumption, poor environmental protection benefits, and low economic efficiency; industrial production will generate a large number of The waste heat will be released into the atmosphere through the cooling tower in the traditional process, causing a great waste of resources and exacerbating the greenhouse effect. [0003] With the development of heat pump technology, boilers in industrial production are gradually replaced by high-temperature heat pumps. It uses a large amount o...

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Problems solved by technology

[0002] In traditional industrial production, high-temperature hot water is basically provided by coal-fired, gas-fired, and oil-fired boilers, which have the following problems: the use of boilers will cause many problems such as high energy consumption, poor environmental protection benefits, and low economic efficiency; industrial production will generate a large number of The waste heat is released into the atmosphere through the cooling water tower in the traditional process, which causes a great waste of resources and aggravates the greenhouse effect

The use of heat pumps only unilaterally reduces the heating energy consumption, and the cooling is still completed by the refrigeration unit, which has not been completely improved

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