CN205664710U - Data center solar energy phase transition cold -storage system - Google Patents

Abstract

The utility model belongs to the technical field of data center economizer system, specifically speaking is a data center solar energy phase transition cold -storage system. The utility model discloses a data center solar energy phase transition cold -storage system include precision air conditioning and solar energy absorption refrigeration unit, precision air conditioning is connected with the evaporimeter respectively through refrigerated water inlet tube, refrigerated water outlet pipe, still includes the phase transition regenerator, the phase transition regenerator is linked together with refrigerated water inlet tube, refrigerated water outlet pipe through cold -storage inlet tube, cold -storage outlet pipe respectively, is provided with the cold -storage control valve on the cold -storage inlet tube. The utility model discloses a data center solar energy phase transition cold -storage system structural design is reasonable, convenience safe in utilization, and the effectual improvement computer room of data center cooling efficiency of ability reduces PUE (Power usage effectiveness) to reduce the energy resource consumption, have good popularization and application and worth.

Description

A data center solar phase change cold storage system

technical field

The utility model relates to the technical field of energy-saving systems for data centers, and specifically provides a solar energy phase-change cold storage system for data centers.

Background technique

With the rapid development of the electronic information industry, the development of data centers has also entered a new stage. The data center is an occasion that requires cooling and cooling throughout the year. When the outdoor temperature is low, the natural cooling source can be used to cool the data center. However, when the outdoor temperature is high, the air conditioning and refrigeration system is required to cool the data center. . The energy consumption of the data center is mainly divided into three parts: server and communication equipment power consumption, air conditioning system cooling power consumption, photos and other three parts. Among them, the data center air-conditioning and refrigeration system consumes about 40% of the energy consumption of the entire data center. The more air conditioners are used, the more power the air conditioning system of the data center consumes, especially in summer when the temperature is high, which directly leads to the crisis of power rationing and a large amount of energy consumption. With the development of social economy, energy consumption is increasing day by day, energy supply is becoming increasingly tense, and various air pollutants will be produced while consuming energy, which will cause damage to the environment. Therefore, it is necessary to improve the cooling efficiency of the data center air conditioning and refrigeration system to reduce Energy consumption of the refrigeration system.

With the continuous development of solar refrigeration technology and the continuous rise of conventional energy prices, the investment in solar refrigeration and air-conditioning systems will become lower and lower, the system performance will become better and better, and the operating economy and environmental protection benefits will become more prominent. During the day, the power supply is overloaded, and many areas adopt peak-valley power price policies to encourage peak-off-peak power consumption to balance the load.

In the patent document with the patent number CN104994716A, an energy-saving air-conditioning system for data centers based on cold storage and utilizing renewable energy is disclosed. The data center energy-saving air-conditioning system includes a data room enclosure, an air-conditioning unit, an electrostatic floor and an IT equipment cabinet, and also includes a solar adsorption refrigeration unit, a cold storage water pump, a cold storage water tank and a cooling water pump; a solar adsorption refrigeration unit and a cold storage The water tanks are respectively connected through the cold storage inlet pipe and the cold storage outlet pipe to form a cold storage circulation loop, and the cold storage water pump is arranged on the cold storage inlet pipe; the cold storage water tank is connected with the air conditioning unit through the cold inlet pipe and the cold outlet pipe respectively A cooling circulation loop is formed, and the cooling water pump is installed on the cooling water inlet pipe; an air supply system is installed in the maintenance structure of the data room. The energy-saving air-conditioning system with this structure can greatly reduce the air supply volume and air supply pressure of the air supply unit, and can timely adjust the air supply volume according to the return air temperature to achieve high-temperature supply air cooling, and realize energy saving of terminal air conditioners through various factors. However, the cold storage capacity of the cold storage water tank of the energy-saving air-conditioning system is limited, and cannot fully meet the user's electricity demand during periods of high electricity demand in the data center.

Contents of the invention

In order to solve the above existing problems, the utility model provides a reasonable structural design, safe and convenient use, which can effectively improve the cooling efficiency of the data center computer room, reduce PUE (Power Usage Effectiveness), reduce energy consumption, and can store the largest amount of cold storage Data center solar energy phase change cold storage system used by the data center.

In order to achieve the above object, the utility model provides the following technical solutions:

A data center solar phase change cold storage system, including a precision air conditioner and a solar absorption refrigeration unit, the solar absorption refrigeration unit includes a generator, a condenser, an evaporator and a solar collector, and the precision air conditioner passes through a chilled water inlet pipe, The chilled water outlet pipes are respectively connected to the evaporator, and also include a phase-change cold storage device, and the phase-change cold storage device is respectively connected to the frozen water inlet pipe and the cold storage outlet pipe through the cold storage inlet pipe and the cold storage outlet pipe. A cold storage control valve is provided.

The precision air conditioner is set in the machine room, and the phase change material at 5-10°C is used in the phase change cold storage.

During use, in the daytime with sufficient sunlight, the solar absorption refrigeration unit absorbs solar energy, and the solar absorption refrigeration unit operates under the heat drive to generate cooling capacity.

When the room needs cooling, close the cold storage control valve, and the solar absorption refrigeration unit will transfer the chilled water to the user through the precision air conditioner to provide cooling capacity for the user;

When there is no need for cooling in the room, the cold storage control valve is opened, and the solar absorption refrigeration unit transfers the cold energy of the chilled water to the phase change cold storage. It solidifies into a solid state to complete the storage of the cooling capacity of the chilled water; when cooling is required at night or indoors with insufficient light, the indoor chilled water at a higher temperature flows back into the phase change cold storage, and the phase change material in the phase change cold storage undergoes phase change. It changes from solid to liquid, releases cold energy, and the cold energy is transferred to users through frozen water.

The phase-change cold storage can be selected for centralized cold storage during the period of the strongest sunlight, so that the overall efficiency of the solar absorption refrigeration unit and the system can be optimized. When the cooling capacity in the phase-change cold storage cannot meet the need to eliminate the indoor cooling load, the solar absorption refrigeration unit directly uses solar energy to cool and directly supplies cooling to the precision air conditioner side for users to use under the condition of sunshine intensity.

Preferably, the chilled water inlet pipe and the chilled water outlet pipe are respectively provided with a chilled water circulation pump and a chilled water control valve. The chilled water circulation pump can provide power for the delivery of chilled water, and the chilled water control valve can control the delivery of chilled water.

Preferably, the solar heat collector is connected to the generator through a heat exchanger via a fluid inlet pipe and a fluid outlet pipe, and a fluid circulation pump is respectively arranged on the fluid inlet pipe and the fluid outlet pipe.

The solar collector absorbs solar energy, and the fluid from the generator enters the heat exchanger through the fluid inlet pipe under the action of the fluid circulation pump, exchanges heat with the solar medium heated by the solar energy in the heat exchanger, and is discharged through the fluid The tubes are discharged into the generator, so that the solar absorption refrigeration unit operates under the heat drive to generate cold energy.

Preferably, the condenser is connected to the cooling tower through a condensed water inlet pipe and a condensed water outlet pipe respectively, and a condensed water circulation pump is arranged on the condensed water inlet pipe.

Compared with the prior art, the data center solar phase change cold storage system of the present invention has the following outstanding beneficial effects:

(1) The solar energy phase change cold storage system of the data center uses renewable resource solar energy as a substitute for the conventional energy used in the air conditioning system, which reduces the energy consumption of the air conditioning and refrigeration system of the data center and saves the cost of the enterprise;

(2) The phase-change cold storage can store cooling energy during periods of sufficient sunlight, and release cooling energy for users to use when sunlight is insufficient or at night, avoiding the disadvantages of air-conditioning systems that can only use solar energy during periods of sufficient sunlight;

(3) The phase change material is placed in the phase change cold storage. The phase change material has a large energy storage density and can store a large amount of cold energy in a period of sufficient light. quantity demand.

Description of drawings

Fig. 1 is a schematic structural diagram of a solar energy phase-change cold storage system for a data center described in the present invention.

Among them, 1. Precision air conditioner, 2. Solar collector, 3. Heat exchanger, 4. Cooling tower, 5. Phase change cold storage, 6. Generator, 7. Condenser, 8. Evaporator, 9. Fluid Inlet pipe, 10. Fluid discharge pipe, 11. Fluid circulation pump, 12. Condensate water inlet pipe, 13. Condensate water outlet pipe, 14. Condensate water circulation pump, 15. Chilled water inlet pipe, 16. Chilled water outlet pipe, 17 . Chilled water circulating pump, 18. Chilled water control valve, 19. Cold storage inlet pipe, 20. Cold storage outlet pipe, 21. Cold storage control valve, 22. Phase change material, 23. Machine room.

detailed description

A data center solar energy phase change cold storage system of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

In the present utility model, in the case of no contrary description, the used orientation words such as "up, down, left and right" usually refer to the up, down, left and right shown in the accompanying drawings; "Refers to the inside and outside of the outline of each part itself.

Example

As shown in Figure 1, the data center solar phase change cold storage system of the utility model mainly includes a precision air conditioner 1, a solar heat collector 2, a heat exchanger 3, a cooling tower 4, a phase change cold storage device 5, a generator 6, and a condenser 7 and evaporator 8. The solar heat collector 2 is connected to the generator 6 through the heat exchanger 3 via the fluid inlet pipe 9 and the fluid outlet pipe 10 respectively. A fluid circulation pump 11 is respectively installed on the fluid inlet pipe 9 and the fluid outlet pipe 10 . The cooling tower 4 is connected to the condenser 7 through a condensed water inlet pipe 12 and a condensed water outlet pipe 13 respectively. A condensed water circulation pump 14 is installed on the condensed water inlet pipe 12 . The precision air conditioner 1 is installed in the machine room 23 . The precision air conditioner 1 is connected to the evaporator 8 through a chilled water inlet pipe 15 and a chilled water outlet pipe 16 respectively. A chilled water circulation pump 17 and a chilled water control valve 18 are respectively installed on the chilled water inlet pipe 15 and the chilled water outlet pipe 16 . The phase change cold accumulator 5 communicates with the chilled water inlet pipe 15 and the chilled water outlet pipe 16 through the cold storage inlet pipe 19 and the cold storage outlet pipe 20 respectively. A cold storage control valve 21 is installed on the cold storage inlet pipe 19 . The phase change material 22 at 5-10° C. is used in the phase change regenerator 5 .

The application process of the data center solar phase change cold storage system of the present utility model is as follows: when the sunlight is sufficient during the day, the solar heat collector 2 absorbs solar energy and heats the solar medium, and the heated solar medium is heated with the fluid from the generator 6 Exchange, driven by heat, the solar absorption refrigeration unit operates and generates cold energy.

If there is no need for indoor cooling, chilled water is transported to the phase-change cold storage device 5, and the phase-change material 22 in the phase-change cold storage device 5 absorbs the cold energy from liquid to solid state, and completes the storage of cold energy; when indoor cooling is required , the return water of indoor chilled water at a higher temperature enters the phase change cold storage device 5, and the phase change material 22 in the phase change cold storage device 5 undergoes a phase change from solid to liquid state, and the cooling capacity is sent into the room through the frozen water for the user Use; when the cooling capacity in the phase-change cold storage device 5 cannot meet the needs of eliminating the indoor cooling load, the evaporator 8 directly sends the cooling capacity into the room through chilled water under the condition that the light intensity allows, for the user to use.

The above-mentioned embodiments are only preferred specific implementations of the utility model, and the usual changes and replacements performed by those skilled in the art within the scope of the technical solution of the utility model shall be included in the protection scope of the utility model.

Claims (4)

1. A data center solar energy phase-change cold storage system, comprising a precision air conditioner and a solar absorption refrigerating unit, the solar absorption refrigerating unit comprising a generator, a condenser, an evaporator and a solar heat collector, and the precision air conditioner is fed through chilled water The water pipe and the chilled water outlet pipe are respectively connected to the evaporator, and it is characterized in that it also includes a phase-change cold storage device, and the phase-change cold storage device is connected to the chilled water inlet pipe and the chilled water outlet pipe respectively through the cold storage inlet pipe and the cold storage outlet pipe The cold storage inlet pipe is provided with a cold storage control valve. 2. The data center solar energy phase change cold storage system according to claim 1, characterized in that: the chilled water inlet pipe and the chilled water outlet pipe are respectively provided with a chilled water circulation pump and a chilled water control valve. 3. The data center solar phase change cold storage system according to claim 1 or 2, characterized in that: the solar heat collector is connected to the generator through a heat exchanger via a fluid inlet pipe and a fluid outlet pipe, and the fluid enters A fluid circulation pump is respectively arranged on the pipe and the fluid discharge pipe. 4. The data center solar phase change cold storage system according to claim 3, characterized in that: the condenser is connected to the cooling tower through the condensed water inlet pipe and the condensed water outlet pipe respectively, and the condensed water inlet pipe is provided with a condensation Water circulation pump.