Cooling mode driven by utilizing urban heat supply network

A heating network and urban technology, applied in the field of cooling mode driven by urban heating network, can solve the problems of low cooling efficiency, large loss, limited supply radius, etc., and achieve the effect of reducing power peak and increasing heat load

Inactive Publication Date: 2011-01-19
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For steam transportation, the loss along the way is relatively large, and the s

Method used

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  • Cooling mode driven by utilizing urban heat supply network
  • Cooling mode driven by utilizing urban heat supply network
  • Cooling mode driven by utilizing urban heat supply network

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1: Schematic diagram of the basic process

[0023] Such as figure 1 As shown, the system consists of a steam turbine 1, a condenser 2, a steam absorption heat pump 3, a steam-water heat exchanger 4, a hot water absorption chiller 5, and connecting pipes and accessories. The last-stage exhaust steam of steam turbine 1 enters the condenser 2 to heat the circulating water, is cooled and condensed, and then returns to the boiler for heating; the steam drawn by the steam turbine 1 is divided into two paths, and one is used as the driving heat source to enter the steam absorption heat pump 3 to recover the waste heat of the circulating water , And heat the large heating network, the other way enters the steam-water heat exchanger 4, directly heats the large heating network, and the steam condensed water returns to the boiler for heating; the circulating cooling water enters the condenser 2 and is sent out after being heated by the steam turbine exhaust. As a low-level he...

Example Embodiment

[0024] Embodiment 2: The application mode of the hot water absorption chiller and the solution dehumidifier set on the user side

[0025] Such as figure 2 As shown, the system is composed of a steam turbine 1, a condenser 2, a steam absorption heat pump 3, a steam-water heat exchanger 4, a hot water absorption chiller 5, a solution dehumidifier 6 and connecting pipes and accessories. The last-stage exhaust steam of steam turbine 1 enters the condenser 2 to heat the circulating water, is cooled and condensed, and then returns to the boiler for heating; the steam drawn by the steam turbine 1 is divided into two paths, and one is used as the driving heat source to enter the steam absorption heat pump 3 to recover the waste heat of the circulating water , And heat the large heating network, the other way enters the steam-water heat exchanger 4, directly heats the large heating network, and the steam condensed water returns to the boiler for heating; the circulating cooling water ente...

Example Embodiment

[0026] Embodiment 3: The application method of setting a hot water absorption chiller, a solution dehumidifier and a domestic hot water preheater on the user side

[0027] Such as image 3 As shown, the system consists of steam turbine 1, condenser 2, steam absorption heat pump 3, steam-water heat exchanger 4, hot water absorption chiller 5, solution dehumidifier 6, domestic hot water preheater 7, and connecting pipes Road and accessories composition. The last-stage exhaust steam of steam turbine 1 enters the condenser 2 to heat the circulating water, is cooled and condensed, and then returns to the boiler for heating; the steam drawn by the steam turbine 1 is divided into two paths, and one is used as the driving heat source to enter the steam absorption heat pump 3 to recover the waste heat of the circulating water , And heat the large heating network, the other way enters the steam-water heat exchanger 4, directly heats the large heating network, and the steam condensed water ...

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Abstract

The invention discloses a cooling mode driven by utilizing an urban heat supply network, which belongs to the technical field of cooling modes. In the mode, hot water of the heat supply network is utilized to drive an absorption refrigerator and a solution dehumidifier to cool and dehumidify the place of a user; meanwhile, the water of the heat supply network after driving the cooling and the dehumidification can be used for preheating domestic hot water and further recharging the heat to the underground through a buried pipe so as to gradually reduce the backwater temperature of the heat supply network, and the heat recharged to the underground can be extracted for heat supply in winter. In a power plant, a mode of the combination heating of a condenser, a steam absorption heat pump and a steam-water heat exchanger is adopted to realize the gradual heating of the backwater of the heat supply network. Compared with the conventional distributed cooling mode and centralized cold water supply mode, the mode can utilize spare urban heat supply network resource in a refrigeration season, increase the heat load of a thermal power plant, recycle the waste heat of the circulating water of the power plant, and facilitate cutting down a power peak due to air conditioning load and even saving power.

Description

technical field [0001] The invention belongs to the technical field of cooling methods, in particular to a cooling method driven by an urban heating network. Background technique [0002] With economic development and the rapid expansion of urban scale, the peak of cooling power consumption in hot summer weather has brought great difficulties to the peak regulation of urban power grids. During the hot summer period, power cuts occurred in North China and Central China, which seriously affected the normal life of residents and was not conducive to building a harmonious society. At the same time, the energy utilization rate of the combined heat and power unit under the pure power generation condition in summer is low and the economy is poor. How to reduce the peak cooling power load in summer, improve the energy utilization rate of thermal power plants and ensure the normal life of residents in summer is an important issue that the local government urgently needs to solve. ...

Claims

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Application Information

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IPC IPC(8): F25B27/02F25B29/00F01K17/02
CPCY02E20/14Y02A30/274
Inventor 付林冯丽洁张世钢赵玺玲孙方田江亿罗勇
Owner TSINGHUA UNIV
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