CN203518141U - Data machine room full-year cooling air-conditioning system with condensation heat recycling function - Google Patents

Abstract

A year-round cooling and air-conditioning system for data computer rooms with condensation heat recovery, including cooling towers, cooling water pumps, hot water pumps, water separators, water collectors and heating equipment terminals, water-water heat pump units and special machines for water-cooled computer rooms . Among them, the cooling tower is set in parallel with the water-water heat pump unit, and the cooling water flowing out of the condenser of the special machine room of the water-cooled machine room is distributed to the evaporator and/or cooling tower of the water-water heat pump unit through the flow regulating valve. The high-grade hot water is sent to the end of the heating equipment to supply heat for surrounding buildings; the excess condensation heat discharged from the water-cooled special machine is discharged from the cooling tower through the cooling water. The utility model satisfies the year-round cooling demand of the data computer room safely and efficiently, and at the same time recovers the high-density heat of the computer room to supply heat for the surrounding buildings, realizes the rational use of cold and heat, and has significant energy saving, emission reduction, water resource saving and Efforts to mitigate the urban heat island effect.

Description

A year-round cooling and air-conditioning system for data room with condensation heat recovery

technical field

The utility model relates to a year-round cooling and air-conditioning system for data computer rooms with condensation heat recovery, which is especially suitable for large-scale data computer rooms with heat supply requirements in surrounding buildings, and belongs to the field of heating, ventilating and air-conditioning. the

Background technique

With the vigorous development of my country's computer and communication industry, especially the rise of the concept of "cloud computing", large-scale operational data computer rooms have grown rapidly. There are many internal communication devices in the data room, and the heat generation is large, and the heat generation per square meter can reach several kilowatts or even tens of kilowatts. In order to maintain the temperature and humidity requirements required by the computer room, the data computer room usually requires the air conditioning system to provide cooling throughout the year, which consumes a lot of energy. the

At present, most of the year-round cooling in the data center adopts air-cooled cooling equipment. Although the air-cooled cooling equipment is flexible and convenient to install, its performance is poor (especially in summer), and it consumes a lot of power. It will also cause local heat island effects and further aggravate performance attenuation. question

In order to improve the year-round cooling performance of the computer room, water-cooled units have been adopted, cooling towers are used to discharge heat, and heat exchangers are used to recover condensation heat in winter for heating of surrounding buildings. This solution has a certain effect on energy saving, emission reduction, and heat island effect; for example, the Chinese utility model patent discloses "a water-cooled air-conditioning system for heat recovery in communication equipment room (201672618U)", which provides a feasible solution for the recovery and utilization of condensation heat (Figure 1 shown), but this scheme has the following defects:

① In this scheme, the cold water produced by the chiller is sent to the equipment room cooling equipment in the room to produce cold air. The equipment room cooling equipment adopts chilled water type equipment room cooling equipment (3) is a water-air heat exchanger, so it has water leakage damage Hidden dangers of equipment in the computer room;

② In order to ensure that the performance of the chiller unit will not be too low during winter operation, the condensation heat is recovered through the plate heat exchanger (18) for heating. Although a certain amount of heat can be recovered, the temperature of the cooling water is lowered and cannot meet the indoor (7 ) heating demand for water temperature;

③ The natural cooling source is not fully utilized. When the outdoor temperature is low in winter or transition season, the chiller (6) of vapor compression mechanical refrigeration still needs to run continuously, resulting in excessive energy consumption of cooling equipment in the computer room. the

In view of the above reasons, it is necessary to propose a technical solution for the recovery of condensation heat in the data center that not only ensures the safe and efficient cooling of the data center, but also meets the indoor heating needs of the surrounding buildings. the

Utility model content

Based on the above technical background, the purpose of this utility model is to propose a year-round cooling and air-conditioning system for data computer rooms with condensation heat recovery, which can solve the heating problem of surrounding buildings while realizing safe and efficient year-round cooling for the computer room. That is, when the surrounding buildings of the computer room have heating demand, the heat discharged through the cooling equipment of the computer room is further raised by the water-water heat pump unit to provide heat for the building; when there is no heating demand, the cooling water loop is connected to the cooling tower Dissipate heat for efficient cooling. the

The technical scheme of the utility model is as follows:

A year-round cooling and air-conditioning system for a data center with condensation heat recovery, including a cooling tower 4, a cooling water pump 5, a hot water pump 10, a water separator 15, a water collector 16, a heating equipment terminal 7, and a water-water heat pump unit 6. Machine room cooling equipment 3, characterized in that: the machine room cooling equipment 3 is a water-cooled machine room special machine, the cooling tower is set in parallel with the water-water heat pump unit, and the cooling water of the machine room cooling equipment 3 is adjusted by the first flow rate The valve 11 and the second flow regulating valve 12 respectively enter the evaporator 61 of the water-water heat pump unit and the cooling tower 4; The water is sent into the condenser of the machine room cooling equipment 3, and after absorbing the heat in the machine room, it is sent back to the evaporator 61 of the water-water heat pump unit or/and in the cooling tower 4; The hot water taken is sent to the terminal 7 of the heating equipment through the water separator 15 and the hot water pump 10 ; the cooled hot water is returned to the condenser of the water-water heat pump unit 6 through the water collector 16 . the

In the above technical solution, the water-cooled computer room special machine is one or more of the water-cooled vapor compression air cooler unit, the separated heat pipe heat exchange unit, the refrigerant heat exchange unit, and the heat pipe-vapor compression composite air conditioner unit Combination of units. The cooling tower 4 is an open cooling tower or a closed cooling tower. The first flow regulating valve 11 and the second flow regulating valve 12 are electric regulating valves or solenoid valves, or electric three-way valves or electromagnetic three-way valves in which two flow regulating valves are integrated. The terminal of the heating equipment is an air-conditioning box, a fan coil unit, a radiator radiant heating heat exchanger or a domestic hot water terminal equipment. the

The technical feature of the utility model is that the system also includes a heat supply source 17, which is connected to the water distributor 15 and the water collector 16 through pipelines and valves respectively. The heat supply source is an urban heating network or a district boiler. Through the adjustment of corresponding valves on the sub-collectors, this system alone or in combination with other heat sources 17 can provide heat for the building. the

Compared with the existing scheme, the utility model has the following advantages: ①A water-cooled-air-cooling machine room cooling device is adopted, and the refrigerant replaces the frozen water and enters the machine room for direct cooling, avoiding the safety hazard caused by the direct entry of frozen water into the machine room; ②Using water -Water heat pump, to further increase the temperature of the cooling water of the cooling equipment in the computer room, and the obtained hot water can meet the requirements of various heating terminals; ③The cooling equipment in the computer room adopts an air-conditioning system with natural cooling function. When the outdoor temperature is low, Provide cheap and efficient cooling for the computer room in a natural way, which can greatly reduce the energy consumption of the computer room for cooling throughout the year. the

In general, a year-round cooling air-conditioning system for a data center with condensation heat recovery not only safely and efficiently meets the year-round cooling demand of the data center, but also recovers high-density heat from the machine room for heating of surrounding buildings, realizing Reasonable use of heat and cold. Not only can it significantly save energy and water, alleviate the urban heat island effect, but also reduce carbon dioxide and particulate matter emissions. This solution is especially suitable for large-scale data computer rooms in the northern region, which can bring significant social and economic benefits. the

Description of drawings

Figure 1 is a schematic diagram of the structure and principle of the condensation heat recovery device proposed in Chinese utility model patent 201672618U. the

Fig. 2 is a schematic diagram of the structure and principle of a year-round cooling and air-conditioning system for a data center with condensation heat recovery provided by the utility model. the

Fig. 3 is a schematic structural diagram of the first embodiment of the water-cooled machine room special machine in the utility model (the combination of the separated heat pipe heat exchange unit and the steam compressor unit). the

Fig. 4 is a schematic structural diagram of the second embodiment of the water-cooled machine room special machine in the utility model (a combination of a separate heat pipe heat exchange unit with a liquid pump or a brine heat exchange unit and a steam compressor unit). the

Fig. 5 is a structural schematic diagram of the third embodiment of the water-cooled computer room special machine in the utility model (heat pipe-vapor compression composite air conditioner unit). the

In the figure: 1-chilled water circulation pump; 2-data computer room; 3-computer room cooling equipment; 4-cooling tower; 5-cooling water pump; 6-water-water heat pump unit; 61-water-water heat pump unit evaporator; 62- Condenser of water-water heat pump unit; 7-heating terminal; 10-hot water pump; 11-first flow regulating valve; 12-second flow regulating valve; 15-water collector; 16-water separator; 17- Other heat sources; 18-plate heat exchanger. the

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described. the

Figure 2 is a schematic diagram of the structure and principle of a year-round cooling and air-conditioning system for a data center with condensation heat recovery provided by the utility model, the system includes a cooling tower 4, a cooling water pump 5, a hot water pump 10, a water separator 15, a water collecting 16, heating equipment terminal 7, water-water heat pump unit 6, machine room cooling equipment 3, characterized in that: the machine room cooling equipment 3 is a water-cooled machine room special machine, and the cooling tower is set in parallel with the water-water heat pump unit , the cooling water of the machine room cooling equipment 3 enters the evaporator 61 and the cooling tower 4 of the water-water heat pump unit through the first flow regulating valve 11 and the second flow regulating valve 12 respectively; the cooling water pump 5 will pass through the water-water heat pump unit The cooling water cooled by the evaporator 61 or/and the cooling tower 4 is sent into the condenser of the cooling equipment 3 in the machine room, absorbs the heat in the machine room and then sent back to the evaporator 61 of the water-water heat pump unit or/and the cooling tower 4 ; The hot water produced from the condenser 62 of the water-water heat pump unit is sent to the end 7 of the heating equipment through the water separator 15 and the hot water pump 10; the cooled hot water is returned to the water-water heat pump through the water collector 16 In the condenser of unit 6. the

In winter or transitional season, when the surrounding buildings of the computer room have a large heating load, the first flow regulating valve 11 is opened, the second flow regulating valve 12 is closed, the heat recovery loop is fully conducted, and the heat dissipation loop is closed. At this time, the cooling water discharged from the condenser of the machine room cooling equipment 3 enters the evaporator 61 of the water-water heat pump unit, and the cooling water after cooling returns to the condenser of the machine room cooling equipment 3 under the action of the cooling water pump 5; The water heat pump unit absorbs the heat in the cooling water, generates higher temperature hot water in the condenser 62 of the water-water heat pump unit, passes through the water separator 15, and is supplied to each heating terminal 7 in the building under the action of the hot water pump 10 Heat, the cooled hot water returns to the condenser 62 of the water-water heat pump unit through the water collector 16. Furthermore, in order to improve the safety and reliability of heat supply, the hot water produced by heat recovery can be regulated through the corresponding valves of the manifolds, and combined with other heat sources 17 to provide heat for the building. the

When the surrounding buildings of the computer room have no heat supply demand, the first flow regulating valve 11 is closed, and the second flow regulating valve 12 is opened, that is, the heat dissipation loop is conducted, and the heat recovery loop is closed. At this time, the cooling water discharged from the condenser of the machine room cooling equipment 3 enters the cooling tower 4 for heat dissipation, and the cooling water after cooling returns to the condenser of the machine room cooling equipment 3 under the action of the cooling water pump 5, ensuring the safety of the machine room cooling equipment run efficiently. the

When the building has a partial heating demand, the first flow regulating valve 11 and the second flow regulating valve 12 are opened at the same time to adjust the opening degree of the first flow regulating valve 11 and the second flow regulating valve 12, and complementarily adjust the incoming water-water The cooling water flow of heat pump evaporator 61 and cooling tower 4. The water-water heat pump absorbs the heat in the cooling water, and generates hot water with a higher temperature in the water-water heat pump condenser 62 for heating; the cooling water entering the cooling tower 4 is evaporated and cooled to remove excess heat. The cooled two-part cooling water returns to the condenser of the cooling equipment 3 in the machine room under the action of the cooling water pump. In this way, under the premise of ensuring the heating demand of surrounding buildings, the remaining heat is removed through the cooling tower, and at the same time, the safe and efficient operation of the cooling equipment in the computer room is guaranteed. the

The system also includes a heat supply source 17, which is connected to the water distributor 15 and the water collector 16 through pipelines and valves respectively. The heat supply source is an urban heating network or a district boiler. Through the adjustment of corresponding valves on the sub-collectors, this system alone or in combination with other heat sources 17 can provide heat for the building. the

The machine room cooling equipment is a water-cooled machine room special machine, which has different structural forms. For example, the water-cooled machine room special machine can use water-cooled vapor compression air cooler unit, separated heat pipe heat exchange unit, refrigerant heat exchange unit and heat pipe-steam One or a combination of several units in the compression compound air conditioning unit. the

Described cooling tower 4 adopts open cooling tower or closed cooling tower. The first flow regulating valve 11 and the second flow regulating valve 12 are electric regulating valves or solenoid valves, or electric three-way valves or electromagnetic three-way valves in which two flow regulating valves are integrated. The terminal of the heating equipment is an air-conditioning box, a fan coil unit, a radiator radiant heating heat exchanger or a domestic hot water terminal equipment. the

Further description will be given below in conjunction with different embodiments. the

Embodiment 1, see FIG. 3 . The water-cooled computer room special machine in this embodiment is a combination of a separate heat pipe heat exchange unit and a steam compressor unit. Separate heat pipe heat exchange unit and vapor compression air conditioning unit are set separately. When the heat transfer temperature difference between the indoor and the cooling water is large (①The outdoor temperature is low, but there is no heating demand, and the heat is dissipated; ②The heat absorbed by the water-water heat pump is greater than the heat exhausted by the steam compressor unit in the machine room), open the separate heat pipe The heat exchange unit conducts natural heat transfer, making full use of the natural temperature difference heat transfer, which improves the energy saving of the system; when the heat transfer temperature difference between the room and the cooling water is small, the vapor compression air conditioning unit is turned on for forced heat removal, which enhances the reliability of the system . In this way, on the basis of ensuring the cooling safety of the machine room, the cooling energy consumption is saved to the greatest extent. At the same time, the system recovers high-density heat from the computer room and uses it for heating of surrounding buildings to achieve reasonable utilization of cold and heat, which not only ensures safe and efficient year-round cooling of the data computer room, but also solves the heating problem of surrounding buildings. the

Embodiment 2, as shown in FIG. 4 . The water-cooled machine room special machine in this embodiment is a separate heat pipe heat exchange unit with a liquid pump or a combination of a brine heat exchange unit and a steam compressor unit. Compared with the ordinary gravity heat pipe heat exchanger, the heat pipe heat exchanger with heat pump is not limited by the installation distance and height, the installation is more flexible and convenient, and the reliability is higher. When the heat transfer temperature difference between the indoor and the cooling water is large, turn on the separated heat pipe heat exchange unit with heat pump or the refrigerant unit for natural heat transfer; when the heat transfer temperature difference between the indoor and the cooling water is small, turn on the vapor compression air conditioning unit for forced heat transfer. the

Embodiment 3, as shown in FIG. 5 . The water-cooled computer room special machine in this embodiment is a heat pipe-steam compression composite unit. The composite unit integrates the heat pipe cycle and the vapor compression cycle by sharing the heat exchanger, and can automatically select the unit to work in the heat pipe mode or the compression refrigeration mode according to the environmental conditions. When the heat transfer temperature difference between the indoor and the cooling water is large, the unit operates in the heat pipe mode and uses the temperature difference for natural heat transfer; when the heat transfer temperature difference between the indoor and the cooling water is small, the unit is switched to the compression refrigeration mode by switching the three-way valve. Forced heat transfer. This solution not only has the energy saving performance of heat pipes and the reliability of compression refrigeration, but also has the advantages of saving materials, land and initial investment. the

Claims (6)

1. A year-round cooling and air-conditioning system for a data center with condensation heat recovery, including a cooling tower (4), a cooling water pump (5), a hot water pump (10), a water separator (15), and a water collector (16) , heating equipment terminal (7), water-water heat pump unit (6) and machine room cooling equipment (3), characterized in that: the machine room cooling equipment (3) is a water-cooled machine room special machine, and the cooling tower (4 ) is set in parallel with the water-water heat pump unit (6), the cooling water of the machine room cooling equipment (3) enters the evaporator of the water-water heat pump unit respectively through the first flow regulating valve (11) and the second flow regulating valve (12) (61) and the cooling tower (4); the cooling water pump (5) sends the cooling water cooled by the evaporator (61) or/and cooling tower (4) of the water-water heat pump unit into the machine room cooling equipment (3) In the condenser of the water-water heat pump unit, it absorbs the heat in the machine room and sends it back to the evaporator (61) or/and cooling tower (4) of the water-water heat pump unit; it is produced from the condenser (62) of the water-water heat pump unit The hot water is sent to the end of the heating equipment (7) through the water separator (15) and the hot water pump (10); the cooled hot water is then returned to the water-water heat pump unit (6) through the water collector (16) for condensation device. the 2. A year-round cooling and air-conditioning system for data computer rooms with condensation heat recovery according to claim 1, characterized in that: the water-cooled computer room dedicated machine is a water-cooled vapor compression air cooler unit, a separate heat pipe heat exchange One or a combination of several units in the unit, the refrigerant heat exchange unit and the heat pipe-vapor compression composite air conditioning unit. the 3. A year-round cooling and air-conditioning system for a data center with condensation heat recovery according to claim 1, characterized in that: said cooling tower (4) is an open cooling tower or a closed cooling tower. the 4. A year-round cooling and air-conditioning system for data equipment rooms with condensation heat recovery according to claim 1, characterized in that: the first flow regulating valve (11) and the second flow regulating valve (12) are Electric regulating valve or solenoid valve, or electric three-way valve or electromagnetic three-way valve with two flow regulating valves integrated. the 5. A year-round cooling and air-conditioning system for data computer rooms with condensation heat recovery according to claim 1, characterized in that: the system also includes a heat supply source (17), the heat supply source passes through pipelines and The valve is connected with the water distributor (15) and the water collector (16). the 6. A year-round cooling and air-conditioning system for a data center with condensation heat recovery according to claim 5, characterized in that: said heat supply source (17) is a city heating network or a district boiler. the

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