Steam exhaust waste heat recovery unit

A waste heat recovery and exhausted steam technology, applied in steam engine installations, steam applications, mechanical equipment, etc., can solve the problems of low pressure and temperature, large volume flow, waste, etc., and achieve the effect of smooth flow

Active Publication Date: 2011-04-20
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, a large amount of low-temperature and low-pressure exhaust steam is generated in the steam turbine of a power plant or in the industrial production process. The heat of this exhaust steam is directly discharged to the atmosphere through circulating water cooling or air cooling, and is wasted in vain.
Since the heat quality of this part of the exha

Method used

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Experimental program
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Effect test

Embodiment 1

[0022] figure 1 It is a schematic diagram of the basic structure of the exhaust steam waste heat recovery unit in this embodiment. Such as figure 1 As shown, the exhaust steam pipe 4 of the low-temperature exhaust steam discharged by the steam turbine of the power plant or industrial production is connected with the inlet 13 of the exhaust steam side of the condenser and the inlet 18 of the exhaust steam side of the heat pump, and the condensate water outlet 14 of the condenser and the condensate water outlet 19 of the heat pump are connected with The return pipe 5 of the condensate recovery system is connected; the hot water side inlet 16 of the condenser is connected with the hot water inlet pipe 6, the hot water side outlet 17 of the condenser is connected with the hot water side inlet 20 of the heat pump, and the hot water side outlet 21 of the heat pump is connected with the The hot water outlet pipe 7 is connected; the heat pump high temperature heat source side inlet 2...

Embodiment 2

[0025] The structural representation of embodiment 2 is as figure 2 As shown, the exhaust steam side of the condenser 1 of the exhaust heat recovery unit and the absorption heat pump 2 are connected in series, that is, the exhaust pipe 4 of the low-temperature exhaust steam discharged from the steam turbine of the power plant or industrial production is connected with the inlet of the exhaust steam side of the condenser. 13 connection, the condenser condensate outlet 14 is connected to the exhaust steam side inlet 18 of the heat pump, the heat pump condensate outlet 19 is connected to the return pipe 5 of the condensate recovery system; the connection between the condenser 1 and the hot water side of the absorption heat pump 2 The method and the pipeline connection method of the high-temperature heat source side of the absorption heat pump 2 are the same as those in the first embodiment. The exhaust steam first enters the condenser and exchanges heat with the hot water. The h...

Embodiment 3

[0027] Embodiment 3 is a waste steam waste heat recovery unit that outputs high-temperature hot water and low-temperature hot water separately, such as image 3 As shown, the hot water side of the condenser 1 and the absorption heat pump 2 are respectively connected with the low-temperature heating system and the high-temperature heating system, the inlet 16 of the hot water side of the condenser is connected with the low-temperature heating water inlet pipe 8, and the heat of the condenser The water side outlet 17 is connected to the low temperature heating outlet pipe 9, the heat pump hot water side inlet 20 is connected to the high temperature heating water inlet pipe 10, the heat pump hot water side outlet 21 is connected to the high temperature heating outlet pipe 11, the condenser 1 and the absorption type The connection mode of the exhaust steam side of the heat pump 2 and the pipeline connection mode of the high-temperature heat source side of the absorption heat pump 2...

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Abstract

The invention discloses a steam exhaust waste heat recovery unit, belonging to the field of heating, ventilating and air conditioning. The steam exhaust waste heat recovery unit consists of an absorption heat pump and a condenser. Input steam exhaust enters into the condenser and the evaporator of the absorption heat pump simultaneously, hot water sequentially passes through the condenser and the absorber and condenser of the absorption heat pump to be heated step by step, the steam exhaust and the hot water in the condenser exchange heat, the hot water is heated, the heated hot water flows into the absorption heat pump, a high temperature heat source is taken as a driving energy source to absorb the heat in the steam exhaust, the steam exhaust releases heat and is condensed into condensed water, and the condensed water flows out the unit and is recovered by a condensed water recovery system by virtue of a return water pipe. By utilizing the steam exhaust waste heat recovery unit disclosed by the invention, the recovery problem of low temperature steam exhaust waste heat released by turbine in a power plant or released during industrial production, and higher temperature heat supply network hot water can be produced.

Description

technical field [0001] The invention belongs to the field of heating, ventilating and air-conditioning, and in particular relates to a exhaust steam waste heat recovery unit. Background technique [0002] At present, a large amount of low-temperature and low-pressure exhaust steam is generated in the steam turbine of a power plant or in the industrial production process. The heat of this exhaust steam is directly discharged to the atmosphere through circulating water cooling or air cooling, and is wasted in vain. Since the heat quality of this part of the exhaust steam is often very low and cannot be used directly, the heat pump heating technology can be used for the exhaust steam circulating water cooling system. It is very large and the pressure and temperature are low, so it is difficult to directly extract and utilize it. At present, there is no precedent for directly recycling this part of exhaust steam waste heat. Contents of the invention [0003] The object of the...

Claims

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Application Information

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IPC IPC(8): F01K17/02F24H4/02
Inventor 付林肖常磊张世钢罗勇冯恩泉
Owner TSINGHUA UNIV
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