Piston-type high-temperature heat pump device for waste heat recovery
A high-temperature heat pump and waste heat recovery technology, which is applied to the operation mode of the machine, heating and cooling combination, lighting and heating equipment, etc., can solve the problems of incomplete improvement, aggravate the greenhouse effect, reduce heating energy consumption, etc., and achieve saving Effects of primary energy, improvement of working environment and reduction of equipment energy consumption
Inactive Publication Date: 2014-10-22
BEIJING UNIV OF TECH
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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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[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0017] As shown in Figure 1, a piston-type high-temperature heat pump device for waste heat recovery is composed of three parts: a high-temperature heat pump unit, a high-temperature hot water circuit and a low-temperature cold water circuit; the high-temperature heat pump unit includes a low-pressure compressor 1, Oil separator 2, high pressure compressor 3, one-way valve 4, condenser 5, high temperature liquid receiver 8, filter drier 9, solenoid valve 10, primary expansion valve 11, gas-liquid separator 12, secondary expansion valve 13. Evaporator 14; the high-temperature hot water circuit includes a condenser 5, a hot-end water pump 6, and a hot-end heat exchanger 7; the low-temperature cold water circuit includes an evaporator 14, a cold-end water pump 15, and a cold-end heat exchanger 16.
[0018] Among them, the outlets of the low-press...
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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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IPC IPC(8): F25B29/00
Inventor 唐志伟杨银静张宏宇蔡博楚萧聂荣华
Owner BEIJING UNIV OF TECH
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