Industrial waste heat and solar energy combined cross-season heat accumulation and regional heat supply system

A technology for industrial waste heat and district heating, which is applied in the field of cross-seasonal heat storage and district heating systems, can solve the problems of ineffective utilization of industrial waste heat, idle heat of equipment, waste of energy grade, etc., to optimize the process of heat extraction and release, The effect of saving primary energy and improving temperature grade

Active Publication Date: 2016-11-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the absence of heat supply demand in summer, industrial waste heat cannot be effectively utilized and can only be discharged into the environment through cooling towers, resulting in idle equipment and waste of heat
[0003] Conventional systems that use soil as a heat storage body usually use

Method used

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  • Industrial waste heat and solar energy combined cross-season heat accumulation and regional heat supply system
  • Industrial waste heat and solar energy combined cross-season heat accumulation and regional heat supply system
  • Industrial waste heat and solar energy combined cross-season heat accumulation and regional heat supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The structure of Example 1 of the cross-season heat storage / district heating system combined with industrial waste heat and solar energy of the present invention is as follows figure 1 As shown, the system consists of industrial waste heat recovery device 1, solar collector 2, buried pipe heat exchanger 3, low-temperature hot water heating terminal device 4, circulation pump 5, circulation pump 6, valves 7-21, and connecting pipelines , four sets of temperature sensors (not shown in the figure), a controller for controlling the opening and closing of the valve, and an electric actuator (not shown in the figure); wherein, the water outlet of the industrial waste heat recovery device 1 is connected to the parallel The valve 7 is connected to one end of the circulation pump 5, and the other end of the parallel valve 7 and the circulation pump 5 is connected to one end of the valve 18, valve 16, valve 8 and valve 12 in turn; the water inlet of the industrial waste heat recov...

Embodiment 2

[0039] The structure of embodiment 2 of the inter-season heat storage / district heating system combined with industrial waste heat and solar energy of the present invention is as follows figure 2 As shown, the system consists of industrial waste heat recovery device 1, solar collector 2, buried pipe heat exchanger 3, low-temperature hot water heating terminal device 4, circulation pump 5, circulation pump 6, valves 7-23, and connecting pipelines And four sets of temperature sensors (not shown in the figure), a controller for controlling the opening and closing of valves and an electric actuator (not shown in the figure), wherein, the water outlet of industrial waste heat recovery device 1 is connected to the parallel valve through the connecting pipeline 7 is connected to one port of the circulation pump 5, and the parallel valve 7 and the other port of the circulation pump 5 are connected to one end of the valve 18, and at the same time connected to one end of the valve 16, an...

Embodiment 3

[0043] The structure of embodiment 3 of the inter-season heat storage / district heating system combined with industrial waste heat and solar energy of the present invention is as follows image 3 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is that, on the basis of the components of Embodiment 1, it also includes a buffer water tank 24 and a circulation pump 25, wherein the first buffer water tank (24) The water outlet and the second water inlet are respectively connected with the water inlet and the water outlet of the low-temperature hot water heating terminal device (4), the first water inlet of the buffer water tank (24) is connected with the second circulation pump (6), and the second water outlet Connected with the tenth valve (16), the third circulation pump (25) is connected between the first water outlet of the buffer water tank (24) and the water inlet of the low-temperature hot water heating terminal device (...

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PUM

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Abstract

The invention discloses an industrial waste heat and solar energy combined cross-season heat accumulation and regional heat supply system, and belongs to the technical field of regional heat supply. The system comprises an industrial waste heat recycling device, a solar heat collector, a ground heat exchanger, a low-temperature hot water heat collecting tail end device, a connecting pipeline, a plurality of sets of circulation pumps and a plurality of sets of valves. The industrial waste heat recycling device is connected with the solar heat collector, the ground heat exchanger and the low-temperature hot water heat collecting tail end device in series or in parallel through the valves, the circulation pumps and the connecting pipeline to form a switchable heat accumulation and heat supply loop. The cross-season heat accumulation manner is adopted in the system, heat in summer is used in winter, and the yearly utilization rate of a solar system and an industrial waste heat system is increased. Meanwhile, the system heat taking and releasing procedure is optimized, the heat of soil is extracted through direct heat exchange in the manner of improving the temperature grade of the underground soil instead of adopting soil balance temperature heat supplementation, and waste of the energy grade due to utilization of a heat pump is avoided.

Description

technical field [0001] The invention belongs to the technical field of district heating, in particular to a cross-season heat storage and district heating system combining industrial waste heat and solar energy. Background technique [0002] District heating refers to the technology of supplying heating and domestic hot water to users in the whole city or in a certain area through the heating pipe network from the concentrated heat source in the city, using steam or hot water as the medium. As a renewable energy source, solar energy is inexhaustible, inexhaustible, clean and pollution-free. If solar energy can be used as the heat source to provide heat to the district heating network, it will bring considerable energy saving and environmental protection benefits. However, the instability, discontinuity and seasonal imbalance of solar energy resources limit the large-scale application of solar energy. Similarly, industrial waste heat has been used in district heating as a r...

Claims

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Application Information

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IPC IPC(8): F24D12/02F24D19/10
CPCF24D12/02F24D19/1015Y02B10/20Y02B10/40Y02B10/70Y02B30/00Y02P80/20
Inventor 杨旭东江亿郭放夏建军刘富军宿颖波
Owner TSINGHUA UNIV
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