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Heat and power cogeneration central heating system based on heat pump

A technology of cogeneration and central heating, which is applied in hot water central heating systems, heating systems, and household heating, etc., can solve the problems of insufficient utilization of latent heat of vaporization, and achieve the effect of improving energy utilization efficiency.

Inactive Publication Date: 2014-03-26
DALIAN BAOGUANG ENERGY SAVING AIR CONDITIONING EQUIP
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Problems solved by technology

[0003] Aiming at the problem that a large amount of latent heat of vaporization in the exhaust steam of the steam turbine cannot be fully utilized, the present invention provides a heat pump-based cogeneration central heating system

Method used

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  • Heat and power cogeneration central heating system based on heat pump

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Embodiment Construction

[0015] In a thermal power plant, a part of the high-temperature steam in the steam turbine 1 drives the generator 2 to generate electricity, and the other part of the high-temperature steam is respectively input to the steam double-effect absorption heat pump 6, the steam single-effect absorption heat pump 7, the steam large temperature difference absorption heat pump 8, and the steam-water heat exchange The device 9, as the power source of the absorption heat pump units at all levels, participates in heat exchange;

[0016] The exhaust gas in the steam turbine 1 enters the condenser 3, and the hot water at 40°C after heat exchange is connected in parallel to the steam double-effect absorption heat pump 6, the steam single-effect absorption heat pump 7, and the steam large temperature difference absorption heat pump 8 , as the low-temperature heat source of the absorption heat pump units at all levels, and returns to the condenser 3 after heat exchange; the return water from th...

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Abstract

Provided is a heat and power cogeneration central heating system based on a heat pump. An absorption heat exchanging unit is introduced, a heat source is subjected to power source and heat exchanging using for multiple times, steam heat source using efficiency is improved, and heat is better provided for a user. A steam double-effect absorption heat pump, a steam single-effect absorption heat pump, a steam large-temperature-difference absorption heat pump and a steam-water heat exchanger are introduced for recycling low-grade heat step-by-step, dead steam in a steam turbine is effectively used, and energy using efficiency is improved. The system improves power plant generating efficiency by more than 30%.

Description

technical field [0001] The invention belongs to the field of combined heat and power heat supply, in particular to a heat pump-based centralized heat supply system for combined heat and power. Background technique [0002] In recent years, with the increase of urban heating area in my country and the construction of industrial plants and production lines, the heat consumption in my country has grown rapidly. From the analysis of heating methods, there are mainly the following heating methods for residents in my country: combined heat and power generation, central heating in small and medium-sized regional boiler rooms, small household gas-fired water heaters, household coal-fired furnaces, etc. Among them, the cogeneration method is a comprehensive energy utilization technology that uses high-grade thermal energy of fuel to generate electricity and then supplies low-grade thermal energy for heating. At present, the average power generation efficiency of 3 million kilowatt t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K17/06F25B27/02F24D3/18
CPCY02A30/274Y02B30/12Y02E20/14
Inventor 姚伟君毕海洋
Owner DALIAN BAOGUANG ENERGY SAVING AIR CONDITIONING EQUIP
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