Combined cooling heating and power supply device based on combination of data center and solar energy

Abstract

The invention discloses a combined cooling heating and power supply device based on a data center combined with solar energy, which comprises the data center, a solar water heater, a boiler, a steam turbine generator, a primary heat exchanger, a secondary heat exchanger and an absorption refrigerator, high-temperature steam is formed by further heating in a boiler and then enters a steam turbine generator to drive a generator to generate electricity, dead steam discharged after expansion acting enters a first-stage heat exchanger and is changed into high-temperature hot water after heat exchange, and the high-temperature hot water enters an absorption refrigerator, and low-temperature hot water flowing out of the absorption refrigerator enters a second-stage heat exchanger; and the cooled water is used as cooling water for the air conditioner of the data center. Compared with an existing data center waste heat utilization system, the system has the advantages that solar energy is introduced, renewable energy sources are utilized to further reduce power generation energy consumption, dead steam discharged after the steam turbine does work is utilized, the heat supply and cold supply requirements are met in combination with the absorption refrigerator, gradient utilization of energy is achieved, and the heat utilization efficiency is improved.

Description

Technical field:

[0001] The present invention relates to the technical field of heating, ventilation and air conditioning, and in particular to a combined cooling, heating and power generation device based on waste heat utilization of a data center. Background technology:

[0002] According to data from the International Energy Agency (IEA), in 2022, global data center electricity consumption accounted for 2% of the world's total electricity consumption, equivalent to the annual electricity demand of a medium-sized country. The energy used for data center cooling accounts for 40% of the total energy consumption, and the waste heat generated is considerable, with great potential for waste heat utilization.

[0003] The traditional combined heat and power system uses gas turbines as power generation equipment and natural gas as primary energy to generate heat, electricity and cold. The present invention uses solar water heaters to further heat the air conditioning return water of the data center based on the use of waste heat from the data center. The heated hot water enters the boiler to be heated into high-temperature steam, and the high-temperature steam enters the steam turbine to generate electricity. The waste heat of the exhaust steam discharged after the steam turbine generates electricity is used as the heat source of the absorption refrigerator to provide cooling and heating. Compared with the existing data center waste heat utilization system, the present invention has the advantage of combining solar energy to further reduce the energy consumption of power generation equipment; in addition, the exhaust steam discharged after the steam turbine works is used in combination with the absorption refrigerator to meet the heating and cooling needs, realizing the cascade utilization of energy and improving the utilization efficiency of heat. Summary of the invention:

[0004] The present invention proposes a combined cooling, heating and power generation device based on a data center combined with solar energy. The entire system comprises a data center (1), a solar water heater (2), a boiler (3), a steam turbine generator (4), a primary heat exchanger (5), a secondary heat exchanger (6) and an absorption refrigerator (7).

[0005] The air conditioning return water outlet of the data center (1) is connected to the solar water heater (2), the outlet of the solar water heater (2) is connected to the boiler (3), the outlet of the boiler (3) is connected to the steam turbine generator (4), the inlet of the primary heat exchanger (5) includes an exhaust steam inlet and a cold water inlet, the exhaust steam outlet of the steam turbine generator (4) is connected to the primary heat exchanger (5), cold water from the outside of the device system is connected to the primary heat exchanger (5), the outlet of the primary heat exchanger (5) includes a high-temperature condensed water outlet and a hot water outlet; the high-temperature condensed water outlet of the primary heat exchanger (5) is connected to the absorption refrigeration machine (7) generator, the inlet of the secondary heat exchanger (6) includes a cold water inlet and a hot water inlet, the hot water outlet of the primary heat exchanger (5) is connected to the secondary heat exchanger (6), the outlet of the absorption refrigeration machine (7) generator is connected to the secondary heat exchanger (6), the outlet of the secondary heat exchanger (6) includes a cold water outlet and a hot water outlet, the hot water outlet of the secondary heat exchanger (6) is connected to the indoor hot water pipe network, and the cold water outlet of the secondary heat exchanger (6) is connected to the data center.

[0006] Compared with the existing data center waste heat utilization technology, the advantage of the present invention is that it introduces solar energy and uses renewable energy to further reduce power generation energy consumption and reduce power generation costs. It then uses the exhaust steam discharged after the turbine works and combines it with an absorption refrigerator to meet heating and cooling needs, thereby achieving cascade utilization of energy and improving heat utilization efficiency. Description of the drawings:

[0007] Figure 1 This is a system flow chart of the combined cooling, heating and power device based on data center cooling combined with solar energy proposed by the present invention

[0008] In the attached figure: 1-data center, 2-solar water heater, 3-boiler, 4-steam turbine generator, 5-primary heat exchanger, 6-secondary heat exchanger, 7-absorption chiller Specific implementation method:

[0009] The present invention discloses a combined cooling, heating and power generation device based on a data center combined with solar energy, as shown in the attached drawings of the specification, comprising: a data center (1), a solar water heater (2), a boiler (3), a steam turbine generator (4), a primary heat exchanger (5), a secondary heat exchanger (6) and an absorption refrigerator (7).

[0010] The air conditioning return water of the data center (1) enters the solar water heater (2), is further heated in the solar water heater (2), flows into the boiler (3), is heated into high-temperature steam in the boiler (3), and the high-temperature steam enters the steam turbine generator (4) to expand and do work, thereby generating power output. At the same time, the high-temperature steam becomes exhaust steam after expanding and doing work, and flows into the primary heat exchanger (5). Since the exhaust steam of the steam turbine still has a large amount of residual heat, the cold water flowing into the primary heat exchanger (5) can be heated in the primary heat exchanger (5), and the exhaust steam itself is also cooled into condensed water with a relatively high temperature. The high-temperature condensed water flowing out of the primary heat exchanger (5) is The high-temperature condensed water flows into the generator of the absorption refrigeration machine (7), and the high-temperature condensed water in the generator of the absorption refrigeration machine (7) acts as a heat source, and the absorption refrigeration machine (7) generates refrigerant steam by heating; the high-temperature hot water of the primary heat exchanger (5) flows to the secondary heat exchanger (6), and at the same time, the absorption refrigeration machine (7) completes the refrigeration cycle and generates cold water for demand; the cold water with a relatively low temperature (40-55°C) flows out of the absorber of the absorption refrigeration machine (7), and after heat exchange, it forms water with a lower temperature (about 30°C) as the cooling water of the air conditioning system of the data center (1). When the above system is in operation, the waste heat of the data center is utilized, and the renewable energy of solar energy is further utilized, and the steam turbine generator and the absorption refrigeration machine are combined to meet the demand for cold, heat and electricity, and at the same time realize the cascade utilization of energy.

Claims

1. A combined cooling, heating and power device based on a data center combined with solar energy, characterized by: The invention comprises a data center (1), a solar water heater (2), a boiler (3), a steam turbine generator (4), a primary heat exchanger (5), a secondary heat exchanger (6), and an absorption refrigeration machine (7). The air conditioning return water outlet of the data center (1) is connected to the solar water heater (2), the outlet of the solar water heater (2) is connected to the boiler (3), the generator of the absorption refrigeration machine (7) is connected to the high-temperature condensed water pipeline at the outlet of the primary heat exchanger (5), the outlet pipe of the absorber of the absorption refrigeration machine (7) is connected to the secondary heat exchanger (6), and the outlet pipe of the secondary heat exchanger (6) is connected to the cooling water inlet of the air conditioning system of the data center (1).

2. According to claim 1, a combined cooling, heating and power device based on a data center combined with solar energy is characterized by: The primary heat exchanger (5) is a tubular heat exchanger, the secondary heat exchanger (6) is a plate heat exchanger, and a temperature sensor is provided at the cold water outlet of the secondary heat exchanger (6).

3. According to claim 1, a combined cooling, heating and power device based on a data center combined with solar energy is characterized by: The absorption refrigerator (7) is a lithium bromide absorption refrigerator.

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