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Central heating system adopting solar energy and low-grade industrial waste heat to heat in combined mode

An industrial waste heat and central heating technology, applied in hot water central heating systems, heating systems, energy industries, etc., can solve the problems of low-grade industrial waste heat utilization efficiency, low clean energy heating ratio, unstable heating load, etc., to achieve Achieve comprehensive utilization efficiency, solve the problem of waste heat utilization, and increase the effect of pipeline network transmission and distribution ratio

Active Publication Date: 2018-12-04
NORTHEASTERN UNIV
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Problems solved by technology

[0005] In order to solve the problem of unstable heating load when the existing low-grade industrial waste heat is used for heating, low-grade industrial waste heat utilization efficiency and low proportion of clean energy heating, the present invention provides a combined heating system based on solar energy and low-grade industrial waste heat

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  • Central heating system adopting solar energy and low-grade industrial waste heat to heat in combined mode
  • Central heating system adopting solar energy and low-grade industrial waste heat to heat in combined mode
  • Central heating system adopting solar energy and low-grade industrial waste heat to heat in combined mode

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Embodiment Construction

[0041] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0042] Such as figure 1 The shown main control device 11 adopts a PLC controller or other controllers, and the main control device 11 receives data detected by sensors such as the first mass flow sensor 14, the second mass flow sensor 15, the indoor temperature detector 8, and the temperature detector 7. Signals are sent to actuators such as the first electromagnetic three-way valve 12 and the electromagnetic three-way valve 9 of the first cascade heat exchange station to make them act.

[0043] The heat storage unit includes a solar heat collector 5, a heat accumulator 1, a first mass flow sensor 14, a first circulating water pump 17, a second circulating water pump 18, a third circulating water pump 6, a first electromagnetic three-way valve 12, a first Temp...

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Abstract

The invention provides a central heating system adopting solar energy and low-grade industrial waste heat to heat in a combined mode, and relates to the technical field of novel central heating. The system comprises a heat source station unit, a heat storage unit, a cascade heat exchange station unit, a subscriber unit, a primary network circulating pipeline and a master control device, wherein the system adopts low-temperature industrial waste heat as a main heat source; primary network circulating water which exchanges heat with industrial waste heat adopts a cascade heat exchange method tosufficiently cool, and then is returned to the heat source station unit, so that utilization efficiency of circulating water is effectively improved; and when main heat source load fluctuates, solar heat exchange is timely supplemented for stabilizing a working condition, so that comfort of a subscriber is guaranteed. The system overcomes the problem that load fluctuates when low-grade industrialwaste heat is used for heating, and also solves the problem that solar heating is affected by weather, so that the complementary advantages benefit with each other by association, and therefore, the central heating system is of great significance in saving energy and protecting the environment.

Description

technical field [0001] The invention relates to the technical field of novel central heating, in particular to a central heating system for combined heating of solar energy and low-grade industrial waste heat. Background technique [0002] In the production process of industrial enterprises, it is inevitable to generate a large amount of heat energy that is discharged into the environment without being utilized, which is called low-grade industrial waste heat. Taking the iron and steel industry as an example, its sources mainly include slag waste heat, product sensible heat, flue gas waste heat, etc. According to statistics, low-grade industrial waste heat accounts for about 60% of the total industrial waste heat, but it is not effectively utilized, which not only leads to the failure of energy utilization efficiency of enterprises, but also seriously affects the natural ecological environment around enterprises. At present, some central heating systems solve the problem of...

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Application Information

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IPC IPC(8): F24D3/02F24D12/02F24D19/10
CPCF24D3/02F24D12/02F24D19/1078Y02B10/20Y02B10/70Y02B30/00Y02P80/20
Inventor 张琦杨仕堂王小壮赵涛
Owner NORTHEASTERN UNIV
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