Heat pump with additional high-temperature heat supply end
A high-temperature, heat-pump technology, applied in the field of low-temperature waste heat utilization, can solve problems such as inability to directly recycle and limit application fields
Inactive Publication Date: 2014-01-29
刘辉
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Problems solved by technology
The low-pressure steam inhaled by the steam injection heat pump can be exhausted exhaust steam or flash steam generated by high-temperature condensed water. Since this type of heat pump can only recover steam, for low-temperature liquid waste heat, such as low-temperature hot water containing The heat cannot be recovered directly, which greatly limits its application fields.
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[0016] figure 1 The shown heat pump based on the additional high-temperature heat supply side of the single-effect first-type absorption heat pump is realized as follows:
[0017] Structurally, it consists of high temperature absorber 1, condenser 2, first throttle valve 3, evaporator 4, absorber 5, solution pump 6, first solution heat exchanger 7, second solution heat exchanger 8, generator 9 and ejector 10, wherein, the generator 9 has a concentrated solution pipeline to communicate with the absorber 5 through the first solution heat exchanger 7, and the absorber 5 has a dilute solution pipeline through the solution pump 6, the first solution heat exchanger The exchanger 7 and the second solution heat exchanger 8 are then connected to the high temperature absorber 1, and the high temperature absorber 1 has a solution pipeline connected to the generator 9 through the second solution heat exchanger 8, and the generator 9 also has a refrigerant steam channel It communicates wi...
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The invention relates to a heat pump with an additional high-temperature heat supply end. The heat pump comprises a high-temperature absorber, a condenser, a first throttle valve, an evaporator, an absorber, a solution pump, a first solution heat exchanger, a second solution heat exchanger, an ejector, a generator or a third solution heat exchanger, a high pressure generator, a low pressure generator and a second throttle valve. A jet heat pump and an absorption heat pump are combined organically, and heat supplying to the outside is achieved in a method of a solution absorption ejector exporting refrigerant steam, so that high heat supply temperature and high-efficient heat energy use ratio are obtained, efficient utilization of high-quality drive steam can be achieved, mean concentration of solution in a generator is effectively lowered, and the heat pump has a small compression ratio and a high ejection coefficient. Compared with a conventional heat supply way, the heat pump has a fine energy-saving efficiency, and can be widely applied in industries like co-generation, crude oil gathering and transportation, and refinery.
Description
technical field [0001] The invention belongs to the technical field of low-temperature waste heat utilization. Background technique [0002] Absorption heat pumps use thermal energy as power, and use the reverse Carnot cycle to transfer heat from low temperature to high temperature. It is especially suitable for occasions with a large amount of waste heat. The condensed state of waste heat can be gaseous or liquid. For the absorption heat pump with lithium bromide aqueous solution as the working medium, due to the physical properties of the working medium itself, in order to ensure the safe and stable operation of the heat pump unit, there are certain requirements for the temperature and concentration of the solution. In order to make the absorption heat pump work in a reasonable To operate in temperature and concentration ranges and achieve the best working efficiency, people have developed multi-effect and multi-stage absorption heat pumps: under the same waste heat temper...
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IPC IPC(8): F25B25/00F25B27/02
CPCY02A30/274
Inventor 刘辉
Owner 刘辉