CN102213466A - Thermal environmental control system - Google Patents

Thermal environmental control system Download PDF

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Publication number
CN102213466A
CN102213466A CN2011100950123A CN201110095012A CN102213466A CN 102213466 A CN102213466 A CN 102213466A CN 2011100950123 A CN2011100950123 A CN 2011100950123A CN 201110095012 A CN201110095012 A CN 201110095012A CN 102213466 A CN102213466 A CN 102213466A
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CN
China
Prior art keywords
pipe
cooling tower
heat
water
air
Prior art date
Application number
CN2011100950123A
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Chinese (zh)
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CN102213466B (en
Inventor
江亿
刘晓华
�田�浩
张伦
李震
钟志鹏
Original Assignee
清华大学
北京纳源丰科技发展有限公司
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Priority to CN2011100950123A priority Critical patent/CN102213466B/en
Publication of CN102213466A publication Critical patent/CN102213466A/en
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Publication of CN102213466B publication Critical patent/CN102213466B/en

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Abstract

The invention relates to a thermal environmental control system which comprises a cooling tower, a cooling tower fan, a water pump, a cooling tower water outlet pipe, a cooling tower water return pipe, a refrigerant circulating system, a low-temperature freezing water pipe, a high-temperature freezing water pipe, two water-heat pipe exchangers and two paths of air-heat pipe exchangers, wherein the refrigerant circulating system consists of a condenser, a compressor, a throttling device and an evaporator; each path of air-heat pipe exchangers is connected with one water-heat pipe exchanger and provided with a plurality of air-heat pipe exchangers which are arranged in parallel, the two water-heat pipe exchangers are serially connected between the low-temperature freezing water pipe and the high-temperature freezing water pipe, and the lower part of the cooling tower is provided with an outdoor air inlet. The thermal environment control system is characterized in that a shell inlet of the evaporator is connected with the cooling tower water outlet pipe, a shell outlet of the evaporator is connected with the high-temperature freezing water pipe; and a shell inlet of the condenser is connected with the high-temperature freezing water pipe, and a shell outlet of the condenser is connected with the cooling tower water return pipe. According to the invention, power consumption of the compressor in the process of reducing environment sensible heat is effectively reduced.

Description

A kind of Thermal Environment Control system

Technical field

The present invention relates to a kind of Thermal Environment Control system, particularly about a kind of Thermal Environment Control system that is applicable to high sensible heat heat radiation density space.

Background technology

With the information machine room is that (sensible heat ratio is greater than 0.9, and equipment heating density is 500~2000W/m for the high sensible heat heat radiation density space of representative 2) indoor Thermal Environment Control is had relatively high expectations.Existing Thermal Environment Control technology comprises compressor cooling and freezes naturally.Use compressor cooling, need the annual compressor of opening, require no matter how outdoor environment temperature changes, compressor is born the complete sensible heat load all the time, because compression ratio is fixed, even the compressor power consumption does not still obviously reduce when outdoor environment temperature is low, cause air conditioner in machine room whole year operation energy consumption higher.Naturally refrigeration comprises gravity-flow ventilation, air-to-air heat exchanger, the heat pipe heat extraction, technology such as refrigerating medium heat exchange, but all be outside given chamber, to pass through to switch refrigeration mode under the operating mode, close compressor realizes the nature cooling, opens compressor again and carry out mechanical refrigeration when outdoor environment can not meet the demands, and can not be implemented in mechanical refrigeration and the continuous conversion adjusting of cooling naturally under the operating mode outside the different chamber.

Summary of the invention

At the problems referred to above, the purpose of this invention is to provide a kind of Thermal Environment Control system that is applicable to high sensible heat heat radiation density space, it can reduce consumption of compressor in reducing environment sensible heat process effectively.

For achieving the above object, the present invention takes following technical scheme: a kind of Thermal Environment Control system, comprise cooling tower, blower fan of cooling tower, water pump, the cooling tower outlet pipe, the cooling tower return pipe, by condenser, compressor, the refrigerant-cycle systems that throttling arrangement and evaporimeter are formed, the cryogenic freezing water pipe, high temperature chilled water pipe, two water-heat exchange of heat pipes, two-way air-heat exchange of heat pipe, the described air in each road-heat exchange of heat pipe connects wherein one water-heat exchange of heat pipe, and the described air-heat exchange of heat pipe in each road is be arranged in parallel a plurality of, and described two water-heat exchange of heat pipes are connected in series between described cryogenic freezing water pipe and the described high temperature chilled water pipe, described cooling tower bottom is provided with outside-air intake, is provided with a water pump between described evaporimeter and the adjacent described water-heat exchange of heat pipe; It is characterized in that: described evaporator shell import connects described cooling tower outlet pipe, and outlet connects described high temperature chilled water pipe; Described condenser shell import connects described high temperature chilled water pipe, and outlet connects described cooling tower return pipe.

Be provided with heat exchange coil in the described cooling tower, described heat exchange coil import connects described cooling tower return pipe, and outlet connects described cooling tower outlet pipe; Be provided with a spray feed pipe and a water pump between the shower at described spray column bottom and described cooling tower top.

Described outside-air intake is provided with the air precooling heat exchanger, and the heat exchanger tube import of described air precooling heat exchanger connects described cooling tower outlet pipe, and outlet connects the shower at described cooling tower top.

Described refrigerant-cycle systems is be arranged in parallel a plurality of, and the condenser shell of each described refrigerant-cycle systems is connected by pipeline, and the evaporator shell of each described refrigerant-cycle systems is connected by pipeline.

The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to advance the housing of the evaporimeter of refrigerant-cycle systems, outlet connects cooling tower outlet pipe and high temperature chilled water pipe respectively, with advancing of described condenser shell, outlet connects high temperature chilled water pipe and cooling tower return pipe respectively, therefore indoor sensible heat load is all born by the cold water closed circuit of setting of the present invention, have only when the cooling tower leaving water temperature is higher just need cooling tower be gone out to be water-cooled to design temperature, therefore reduced the load that compressor is born effectively by compressor.2, the system of the present invention's setting is in the control of indoor sensible heat, when outside air temperature is low, if cooling tower outlet pipe temperature relatively near in addition be lower than the design temperature of chilled water, can close compressor, only rely on cooling water circulation loop to finish heat absorption and heat extraction, therefore realized the Thermal Environment Control of low energy consumption.3, the present invention is owing to be provided with many groups coolant circulating system in parallel in system, therefore can further improve the efficient of compressor, and adjust the platform number of compressor operating according to the variation of outdoor environment, the uniform distribution compressor load, thus realized mechanical refrigeration and the continuous adjusting conversion of cooling naturally.The present invention is little to the change of prior art, but energy-saving effect and reduction equipment loss effect are obvious, and it can be widely used in the adjusting control of various thermal environments, in the adjusting control of particularly high sensible heat heat radiation density space.

Description of drawings

Fig. 1 is an air-conditioning system schematic diagram of the prior art

Fig. 2 is the embodiment of the invention 1 structural representation

Fig. 3 is the embodiment of the invention 2 structural representations

Fig. 4 is the embodiment of the invention 3 structural representations

Fig. 5 is the embodiment of the invention 4 structural representations

The specific embodiment

In order to be well understood to Thermal Environment Control provided by the invention system, at first introduce air-conditioning system of the prior art.

As shown in Figure 1, comprise cooling tower 1 in the air-conditioning system of prior art, blower fan of cooling tower 2, water pump 3, outside-air intake 4, cooling tower outlet pipe 5, cooling tower return pipe 6, condenser 7, compressor 8, throttling arrangement 9, cold-producing medium 10, evaporimeter 11, cryogenic freezing water pipe 12, water-the heat exchange of heat pipe 14,15 of 13, two series connection of high temperature chilled water pipe, two-way air-heat exchange of heat pipe 16,17 and indoor thermal source (for example server cabinet etc.) 18.

One tunnel a plurality of air-heat exchange of heat pipes 16 water-heat exchange of heat pipe 14 that is connected in parallel wherein, a plurality of air-heat exchange of heat pipes 17 in another road water-heat exchange of heat pipe 15 that is connected in parallel, thermal source 18 is arranged in the space that is enclosed by each heat exchange of heat pipe 14,15,16,17; Wherein cold-producing medium 10 flows in the refrigerant-cycle systems that condenser 7, compressor 8, evaporimeter 11 and throttling arrangement 9 are formed; Wherein cooling tower 1, water pump 3, cooling tower outlet pipe 5, condenser 7 housings and cooling tower return pipe 6 are connected to form a cooling water circulation loop; Cryogenic freezing water pipe 12, evaporimeter 11 housings, two water-heat exchange of heat pipes 14,15 and high temperature chilled water pipe 13 are connected to form a chilled water closed circuit.Be connected with a water pump 19 between evaporimeter 11 and water-heat exchange of heat pipe 14, water pump 19 is used to control circulating water flow.

The heat that indoor thermal source 18 distributes is sent into water-heat exchange of heat pipe 14 via air-heat exchange of heat pipe 16, simultaneously send into water-heat exchange of heat pipe 15 via air-heat exchange of heat pipe 17, be delivered to evaporimeter 11 by the chilled water closed circuit, again by compressor 8 actings, be delivered to cooling tower 1 via condenser 7 by cooling water circulation loop, hot gas rejects heat in the outside atmosphere environment by blower fan of cooling tower 2, and the water that falls into cooling tower 1 bottom continues circulation.The air-conditioning system of prior art is walked under the high compression ratio operating mode because the thermic load that compressor 7 is born is big the whole year, and refrigerating efficiency is low, and power consumption is big.

Below in conjunction with drawings and Examples Thermal Environment Control provided by the invention system is introduced.

Embodiment 1:

As shown in Figure 2, the difference of the Thermal Environment Control system that present embodiment provides and the air-conditioning system of prior art is: the import of condenser 7 housings of refrigerant-cycle systems is connected high temperature chilled water pipe 13, outlet connection cooling tower return pipe 6; The import of evaporimeter 11 housings of refrigerant-cycle systems is connected cooling tower outlet pipe 5, and outlet connects cryogenic freezing water pipe 12, thereby forms an open cooling column series connection cold water Cycle Unit.

During the present embodiment operation, generally need not start the compressor 8 of refrigerant-cycle systems, the heat that indoor thermal source 18 distributes is sent into water-heat exchange of heat pipe 14 via air-heat exchange of heat pipe 16, simultaneously send into water-heat exchange of heat pipe 15 via air-heat exchange of heat pipe 17, and the series connection of the cooling tower by setting of the present invention cold water Cycle Unit takes away the sensible heat load of thermal source, enters outside atmosphere by cooling tower 1.Have only when cooling tower outlet pipe 5 surpasses design temperature, compressor 8 is just opened, cooling tower outlet pipe 5 is cooled to the chilled water 12 of design temperature via evaporimeter 11, water-the heat exchange of heat pipe 14,15 of flowing through successively, become high temperature chilled water pipe 13 after taking away indoor net quantity of heat, be heated to high temperature cooling tower return pipe 6 via condenser 7, enter cooling tower 1 heat extraction again, finish circulation.

Embodiment 2:

As shown in Figure 3, Thermal Environment Control system that present embodiment provides and the difference between the embodiment 1 are: outside-air intake 4 places at cooling tower are provided with air precooling heat exchanger 20, the heat exchanger tube import of air precooling heat exchanger 20 connects cooling tower outlet pipe 5, and outlet connects the shower at cooling tower 1 top.

During present embodiment work, substantially the same manner as Example 1, difference is that outdoor air 4 needs earlier by entering in the cooling tower 1 after 20 precoolings of air precooling heat exchanger, so that the leaving water temperature of cooling tower 1 is near the air dew point temperature again.Outside identical chamber under the working condition, present embodiment can further reduce the load that compressor 8 is born, and further reduces the refrigeration power consumption of compressor 8 like this.

Embodiment 3:

As shown in Figure 4, Thermal Environment Control system that present embodiment provides and the difference between the embodiment 1 are: be provided with coiled coil or turn round heat exchange coil in a row 21 in cooling tower 1, and with heat exchange coil 21 imports connection cooling tower return pipe 6, outlet connects cooling tower outlet pipe 5, and then forms the cooling tower tandem cold water Cycle Unit of a sealing.Draw a spray feed pipe 22 and a water pump 23 simultaneously in cooling tower 1 bottom, the shower to cooling tower 1 top supplies water.

During present embodiment work, substantially the same manner as Example 1, difference is that the cold water of periodic duty is to enter cooling tower 1 via coil pipe 21, again with spray column 1 in air, shower water heat exchange, can improve the rough sledding such as heat exchange manifold fouling that water quality causes so effectively in the cooling tower 1 of open type, remain the unimpeded of cooling water circulation stream.

Embodiment 4:

As shown in Figure 5, the Thermal Environment Control system that provides of present embodiment and the difference between embodiment 1 or embodiment 2 or the embodiment 3 are: be arranged in parallel a plurality of refrigerant-cycle systems in cooling tower tandem cold water Cycle Unit open or sealing.Condenser 7 housings in each refrigerant-cycle systems are connected by pipeline, and evaporimeter 11 housings in each refrigerant-cycle systems are connected by pipeline.Can make every compressor 8 keep the close compression ratio and the work temperature difference like this, further improve the efficient of compressor 8; Can perhaps according to the entry variation of temperature of evaporimeter 11, adjust compressor 8 operation platform numbers automatically according to the variation of outdoor environment (cooling tower outlet pipe 5 temperature) simultaneously, the uniform distribution load is realized mechanical refrigeration and the continuous adjusting conversion of cooling naturally.

During present embodiment work, when outside air temperature is low, if cooling tower outlet pipe 5 temperature are more approaching even be lower than the design temperature of chilled water 12, perhaps evaporimeter 11 goes into coolant-temperature gage when being lower than design temperature, can close compressor 8, only rely on cooling water circulation loop to finish heat absorption and heat extraction, realize the Thermal Environment Control of low energy consumption.

The various embodiments described above only are used to illustrate the present invention; wherein the structure setting among each embodiment can change to some extent with being connected not only; and can intersect and be used in combination; every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.

Claims (5)

1. Thermal Environment Control system, comprise cooling tower, blower fan of cooling tower, water pump, the cooling tower outlet pipe, the cooling tower return pipe, by condenser, compressor, the refrigerant-cycle systems that throttling arrangement and evaporimeter are formed, the cryogenic freezing water pipe, the high temperature chilled water pipe, two water-heat exchange of heat pipes, two-way air-heat exchange of heat pipe, the described air in each road-heat exchange of heat pipe connects wherein one water-heat exchange of heat pipe, described air-the heat exchange of heat pipe in each road is be arranged in parallel a plurality of, described two water-heat exchange of heat pipes are connected in series between described cryogenic freezing water pipe and the described high temperature chilled water pipe, and described cooling tower bottom is provided with outside-air intake, are provided with a water pump between described evaporimeter and the adjacent described water-heat exchange of heat pipe; It is characterized in that: described evaporator shell import connects described cooling tower outlet pipe, and outlet connects described high temperature chilled water pipe; Described condenser shell import connects described high temperature chilled water pipe, and outlet connects described cooling tower return pipe.
2. Thermal Environment Control as claimed in claim 1 system, it is characterized in that: described outside-air intake is provided with the air precooling heat exchanger, the heat exchanger tube import of described air precooling heat exchanger connects described cooling tower outlet pipe, and outlet connects the shower at described cooling tower top.
3. Thermal Environment Control as claimed in claim 1 system, it is characterized in that: be provided with heat exchange coil in the described cooling tower, described heat exchange coil import connects described cooling tower return pipe, and outlet connects described cooling tower outlet pipe; Be provided with a spray feed pipe and a water pump between the shower at described spray column bottom and described cooling tower top.
4. Thermal Environment Control as claimed in claim 3 system, it is characterized in that: described outside-air intake is provided with the air precooling heat exchanger, the heat exchanger tube import of described air precooling heat exchanger connects described cooling tower outlet pipe, and outlet connects the shower at described cooling tower top.
5. as claim 1 or 2 or 3 or 4 described Thermal Environment Control systems, it is characterized in that: described refrigerant-cycle systems is be arranged in parallel a plurality of, the condenser shell of each described refrigerant-cycle systems is connected by pipeline, and the evaporator shell of each described refrigerant-cycle systems is connected by pipeline.
CN2011100950123A 2011-04-15 2011-04-15 Thermal environmental control system CN102213466B (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN102589313A (en) * 2012-03-05 2012-07-18 北京纳源丰科技发展有限公司 Application method and application system of multifunctional cooling tower
CN104807277A (en) * 2014-09-28 2015-07-29 长沙海川节能技术有限公司 Circular water cooling system
CN105430998A (en) * 2014-09-22 2016-03-23 广东申菱环境系统股份有限公司 Control method of fluorine-pump internal-circulation server cabinet heat radiation system
CN105451509A (en) * 2014-09-22 2016-03-30 广东申菱环境系统股份有限公司 Control method of fluorine-pump primary loop server cabinet heat radiation system
CN105451508A (en) * 2014-09-22 2016-03-30 中国移动通信集团广东有限公司 Fluorine-pump internal-circulation secondary refrigerant loop server cabinet heat radiation system
CN105517405A (en) * 2014-09-22 2016-04-20 广东申菱环境系统股份有限公司 Control method of heat pipe internal circulation type server cabinet heat dissipation system
CN107091510A (en) * 2017-04-12 2017-08-25 北京百度网讯科技有限公司 Data center's refrigerating method and system

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Publication number Priority date Publication date Assignee Title
CN102589313A (en) * 2012-03-05 2012-07-18 北京纳源丰科技发展有限公司 Application method and application system of multifunctional cooling tower
CN105451509B (en) * 2014-09-22 2018-06-15 广东申菱环境系统股份有限公司 A kind of fluorine pumps the control method of a loop server cabinet cooling system
CN105430998A (en) * 2014-09-22 2016-03-23 广东申菱环境系统股份有限公司 Control method of fluorine-pump internal-circulation server cabinet heat radiation system
CN105451509A (en) * 2014-09-22 2016-03-30 广东申菱环境系统股份有限公司 Control method of fluorine-pump primary loop server cabinet heat radiation system
CN105451508A (en) * 2014-09-22 2016-03-30 中国移动通信集团广东有限公司 Fluorine-pump internal-circulation secondary refrigerant loop server cabinet heat radiation system
CN105517405A (en) * 2014-09-22 2016-04-20 广东申菱环境系统股份有限公司 Control method of heat pipe internal circulation type server cabinet heat dissipation system
CN105517405B (en) * 2014-09-22 2019-01-11 广东申菱环境系统股份有限公司 A kind of control method of heat pipe internal-circulation type server cabinet cooling system
CN104807277A (en) * 2014-09-28 2015-07-29 长沙海川节能技术有限公司 Circular water cooling system
CN107091510A (en) * 2017-04-12 2017-08-25 北京百度网讯科技有限公司 Data center's refrigerating method and system

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