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Large temperature difference centralized heating/cooling system

A refrigeration system and central heating technology, applied in heating and refrigeration combinations, refrigerators, refrigeration and liquefaction, etc., can solve the problems of thermal power stations and absorption heat exchange units that are not suitable for residential areas, such as large volume and weight, and achieve The effect of reducing the power consumption of the water pump, improving the conveying capacity, and improving the utilization rate of the waste heat

Inactive Publication Date: 2014-08-06
DUNAN TIANJIN ENERGY SAVING SYST
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Problems solved by technology

However, the volume and weight of the absorption heat exchange unit are huge, so it is not suitable to be installed in the thermal station of the residential area

Method used

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  • Large temperature difference centralized heating/cooling system

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Embodiment ２

[0020] Example 2: The non-heating season refers to spring, summer and autumn. Valve E is opened, and valves G and D are closed; the 130°C hot water from the thermal power plant is pumped to the ammonia water absorption refrigeration unit B to be hot water After the cold storage along the transmission pipeline provides cooling capacity, the driving power of the ammonia water absorption refrigerating unit turns the hot water into 70°C low-temperature hot water, and returns to the thermal power plant through the valve E. The lithium bromide absorption heat pump is produced by the thermal power plant. The steam or gas is used as the driving energy to extract the waste heat of the cooling circulating water, and turn the 70°C hot water returned to the thermal power plant into 90°C hot water, which is then heated to 130°C by the basic heater and sent out to enter the next cycle . The 130°C hot water produced by the thermal power plant can be used throughout the year as the driving en...

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Abstract

The invention discloses a large temperature difference centralized heating / cooling system. According to the large temperature difference centralized heating / cooling system, hot water output from a residual heat heating system can be divided into two ways: one way is connected with the cooling system through pipelines and the other way is connected with urban heat users through the pipelines; the cooling system is mixed with backwater of the heat supply users and then connected with heat users through the pipelines; the backwater of the heat supply users enters into an absorption heat pump in a heating system; the absorption heat pump is driven by steam or fuel gas to extract cooling circulating water residual heat; the residual heat is heated by a heater to the temperature of 130 DEG and heating water is discharged and enters into a next circulation. The large temperature difference centralized heating / cooling system has the benefits that as the back water of the system is recycled, the temperature of supply water / backwater reaches 130 / 30 DEG; as the temperature of the supply water / backwater is increased, the heat supply network delivery capacity is improved and the water pump power consumption in the system operation is reduced; moreover, an ammonium hydroxide absorption cooling unit can not only ensure cooling in winter, but also provide cold quantity for cold storages in spring, summer and autumn, power necessary for normal electric cooling is saved, the residual heat usage rate is improved and the energy conservation and emission reduction are facilitated.

Description

technical field [0001] The invention relates to a heat supply system utilizing industrial waste heat; in particular, it relates to a centralized heating / refrigeration system with large temperature difference. Background technique [0002] With the continuous development of urban scale, central heating in winter has become an inevitable trend. In the central heating system, the heat source of central heating is developing towards the reuse of industrial waste heat. Among them, the transmission capacity of the heat network is the heating process. The key is to increase the temperature difference between the supply and return water to increase the temperature difference between the supply and return water. When the temperature of the hot water delivered by the heating network is constant, lowering the return temperature of the heating water network can reduce the flow of hot water delivery and reduce the delivery rate. Reduce the initial investment of the pipeline and reduce th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B29/00F25B27/02
CPCY02A30/274
Inventor 陈娟黄悦
Owner DUNAN TIANJIN ENERGY SAVING SYST
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