Multi-grade waste heat recovery system for refrigeration of thermal power plant coupling data center and control method

Abstract

The invention discloses a multi-grade waste heat recovery system for refrigeration of a thermal power plant coupling data center and a control method. The multi-grade waste heat recovery system mainly comprises a waste heat boiler, a turboset, a condenser, a shaft seal heater, a steam-water heat exchanger, a hot water type lithium bromide refrigerating unit, a flue gas waste heat recovery device, a cooling tower, a water-gas heat exchange device, a data center machine room, a cabinet set, an absorption heat pump, a drainage heat exchanger and a heating user, wherein the flue gas waste heat recovery device and the steam-water heat exchanger generate high-temperature hot water to be used for driving the hot water type lithium bromide refrigerating unit to produce chilled water to cool the data center machine room, and waste heat of the condenser and waste heat of the hot water type lithium bromide refrigerating unit are driven by the absorption heat pump to supply heat to the heating user at the same time. By recovering multi-grade waste heat and coupling resident heating and data center cooling requirements, the energy efficiency level of a power plant is improved, the PUE index of the data center is deeply reduced, and wide application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive energy, and specifically relates to a multi-grade waste heat recovery system and a control method for thermal power plants coupled with data center refrigeration, and is especially suitable for cogeneration systems with data center cooling requirements. Background technique [0002] As for thermal power plants, as the country puts forward the strategic goal of "carbon peaking and carbon neutrality", thermal power plants are facing enormous pressure to save energy and reduce carbon. Thermal power plants are large carbon emitters, especially as the domestic carbon market continues to mature, the operating costs of thermal power plants have increased dramatically. On the other hand, the carbon reduction effect of waste heat resource recovery can also partially offset the carbon emissions of thermal power plants. Therefore, thermal power plants urgently need to develop new energy consumption sc...

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Problems solved by technology

In addition, there is still a certain gap between my country's data centers and advanced data centers in Europe and the United States, especially the average power usage efficiency (PUE) index. Although the PUE of new large-scale data centers has decreased, the overall level is 1.3-2 There is a large gap compared with the average level of

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