Sewage source heat pump and data center composited clean cold-supply and heat-supply system and method

Abstract

The invention discloses a sewage source heat pump and data center composited clean cold-supply and heat-supply system and method and belongs to the technical field of recycling cold energy and heat ofsewage sources. The sewage source heat pump and data center composited clean cold-supply and heat-supply system comprises a sewage plant, a sewage source heat pump system, a heat exchange station, adata center refrigerating machine room, a data center, an air source heat pump and users requiring cold energy or heat; the cold energy recycled by the sewage source heat pump system from sewage is supplied to the data center and the nearby users; and the heat supplied by the sewage and the heat recycled from high-temperature air exhausted from the data center are supplied to the nearby users simultaneously. The cold energy and heat of the sewage in the sewage plant can be recycled through a sewage source heat pump, the heat generated by the data center can be also recycled, thus, the cold energy and the heat are supplied to the data center and the nearby users, energy consumption of the data center is reduced, the carbon emission amount of the sewage plant is reduced or offset, and the effects of energy gradient utilization and carbon neutrality are achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage source cooling, heat recovery and utilization, refrigeration and heating, and in particular relates to a combined clean cooling and heating system and method of a sewage source heat pump and a data center. Background technique [0002] With the rapid development of Internet communication services, the number of data center construction has also entered a period of rapid growth. At present, the total power consumption of my country's data centers reaches 85 billion kw h, of which the energy consumption of the air conditioning system accounts for about 40% of the total energy consumption of the data centers, and the temperature range of the hot aisles of most data centers is between 27-46°C. The heat in the hot air is not recycled, but directly discharged outside. Therefore, the data center not only requires high energy consumption for cooling, but also the heat generated is not fully utilized, result...

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Problems solved by technology

At present, the total power consumption of my country's data centers reaches 85 billion kw h, of which the energy consumption of the air conditioning system accounts for about 40% of the total energy consumption of the data centers, and the temperature range of the hot aisles of most data centers is between 27-46°C. The heat in the hot air is not recycled, but directly discharged outside. Therefore, the data center not only requires high cooling energy consumption, but also the generated heat is not fully utilized, resulting in a large energy waste

[0003] my country's annual sewage discharge amounted to 46.4 billion cubic meters. Assuming that the unit sewage volume is 100 cubic meters, the sensible heat temperature difference that can be used is 5°C, and the cold heat that can be used is 2.1×10 6 KJ; when cooling, can save primary energy (coal) 0.357×10 6 kJ, equivalent to 21kg of coal, can save primary energy (gas) 0.168×10 6 KJ, equivalent to 10.5 cubic meters of gas; the temperature of urban sewage is a rare heat pump cold source, relatively stable throughout the year, and the temperature of the water body in summer is lower than the ambient air temperature. This temperature characteristic makes the sewage source heat pump more efficient than the traditional air conditioning system. The operating efficiency must be high, which can greatly save operating costs; the cooling capacity of a large amount of sewage discharged in cities is not fully utilized, which also causes a large amount of energy waste, which does not meet the requirements of circular economy, energy conservation and environmental protection

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