Power plantcogeneration unit with lithium bromide heat pump heating

Abstract

The invention discloses a power plantcogeneration unit with lithium bromide heat pump heating, and belongs to the field of heating waste heat recycle and heat distribution. The problem that heat is increased step by step to supply heat of high temperature power plant water and storage water to a user side to enable lower temperature water after heat exchange to continue to participate circulationis solved. A first branch is connected to a first output, a second branch is connected a high temperature water inlet of an evaporator of a fourth heat pump, a low temperature water outlet of the evaporator is connected with a second output, and a water supply pipe is connected with an inlet of a low temperature heat exchange section; and an outlet of the low temperature heat exchange section is connected with a first water separator. Thepower plantcogeneration unit with lithium bromide heat pump heating has the effect of increasing the heat step by step.

Description

technical field [0001] The invention belongs to the field of heating waste heat recovery and heat distribution, and relates to a cogeneration device of a power plant for heating by a lithium bromide heat pump. Background technique [0002] In recent years, with the increase of urban heating area in my country and the increase of production line construction in industrial plants, the heat consumption in my country has increased rapidly. From the analysis of heating methods, there are currently the following ways for residents to heat in my country: thermoelectricity Combined production mode, central heating of small and medium-sized regional boiler rooms, small domestic gas water heaters, household coal-fired furnaces, etc., among which the combined heat and power mode is a combination of using the high-grade thermal energy of the fuel to generate electricity and then using its low-grade thermal energy for heating Use energy technology. At present, the average power generation...

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Problems solved by technology

[0006] Beneficial effects: high-temperature water is provided by low-temperature power plant water in exhaust steam devices and steam turbines, and the heat is gradually increased by steam heat pump units and multiple lithium bromide heat pump units to provide high-temperature heat sources for lithium bromide heat pumps, realizing the recycling of power plant water , because it can not only solve the problem of heat supply and demand mismatch caused by severe cold weather, but also meet the heat demand of the user end when the load is normal, realize the step utilization of energy, and conform to the fundamental concept of energy saving and emission reduction. Lithium bromide heat pump The heating device performs heat exchange between the storage water, the user end and the power plant water, and supplies the heat of the high temperature power plant water and the storage water to the user end, that is, the heat exchange is completed through the lithium bromide heat pump and the heat pump, and the low temperature water after heat exchange is separated Return to the power plant and the first water separator, so that the low-temperature water after heat exchange continues to participate in the circulation, not only completes the output of high-temperature heat and low-temperature heat, but also recycles the water, realizing the saving and full use of water sources and heat

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