CN102954548A - Direct evaporation split type heat pipe heat-exchanger - Google Patents

Direct evaporation split type heat pipe heat-exchanger Download PDF

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Publication number
CN102954548A
CN102954548A CN201210550836XA CN201210550836A CN102954548A CN 102954548 A CN102954548 A CN 102954548A CN 201210550836X A CN201210550836X A CN 201210550836XA CN 201210550836 A CN201210550836 A CN 201210550836A CN 102954548 A CN102954548 A CN 102954548A
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China
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working medium
pipe
outdoor
indoor
water
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CN201210550836XA
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朱江
朱建斌
崔凌浩
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Sichuan Chengguan Energy-Saving Environmental Protection Science & Technology Co Ltd
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Sichuan Chengguan Energy-Saving Environmental Protection Science & Technology Co Ltd
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Priority to CN201210550836XA priority Critical patent/CN102954548A/en
Publication of CN102954548A publication Critical patent/CN102954548A/en
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Abstract

The invention discloses a direct evaporation split type heat pipe heat-exchanger. The direct evaporation split type heat pipe heat-exchanger comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises an indoor working medium coil and an indoor fan; the outdoor unit comprises an outdoor working medium coil and an outdoor fan; the indoor working medium coil, the outdoor working medium coil and a connection working medium pipe between the indoor working medium coil and the outdoor working medium coil constitute a heat pipe system together; the outdoor unit also comprises a wet film, a sprayer and a water tank; the wet film is arranged on the wind incoming side of the outdoor working medium coil; the sprayer is arranged above the wet film; and a water inlet of the sprayer is connected with a water outlet of the water tank through a water pipe. With the adoption of the direct evaporation split type heat pipe heat-exchanger, through the application of a direct evaporation type refrigerating mode of which the refrigerating effect approaches the refrigerating effect of the traditional water refrigerating mode to the heat pipe system, a high-efficiency direct evaporation split type heat pipe is formed; no outdoor wind enters a machine room, so that the indoor air is prevented from being polluted by the outside air; the air refrigerated in a direct evaporation way efficiently cools the outdoor working medium coil; and therefore, the high-efficiency refrigeration and the high energy saving rate of indoor space caused by the heat pipe are guaranteed.

Description

Directly evaporate the separated heat pipe heat exchanger
Technical field
The present invention relates to a kind ofly for machine room, base station, building adjustment and energy-conservation heat exchanger, relate in particular to a kind of direct evaporation separated heat pipe heat exchanger.
Background technology
The report of Environmental Protection Agency (EPA) is pointed out: the annual accumulative total of U.S. data center consumed 61,000,000,000 degree electricity (61 billion kWh) in 2006, and this numeral is compared 2000 and had more than tripled.Account for the whole America then total power consumption 1.5%, approximately 4,500,000,000 dollars of the electricity charge approximate 5,800,000 average power consumptions of American family.
And in China, the energy consumption of data center is surprising equally.Data center reaches 36,400,000,000 degree power consumption in 2009 according to one's analysis, is about as much as 1% of national energy consumption.
In the total energy consumption of data center, the information technoloy equipment energy consumption accounts for 51%, and ventilation and air conditioning system accounts for 35%, and illumination and other energy consumption account for 14%.The energy consumption of information technoloy equipment often depends on enterprise to the workload demands of equipment itself, and environmental control system in addition is that the energy consumption proportion that occupies of ventilation and air conditioning system is quite large.The energy saving optimizing of visual data center environment control system is the important component part of the energy-conservation research of whole data center.
Have much for the energy-conservation mode of data center's ventilation and air conditioning system, it is more a kind of in numerous modes taking full advantage of outdoor cold source.And heat exchange of heat pipe and wet film VMC (being also referred to as the direct-evaporation-type refrigeration system) are exactly the exemplary apparatus that utilizes outdoor cold source energy-conservation.Although the energy-saving effect of heat exchange of heat pipe and wet film VMC is fine, the limiting factor that is subject to regional outdoor environment is more.
Although present wet film VMC has higher refrigerating efficiency, but there is an obvious shortcoming in this system, that is: need to cool off through wet film, the air behind the humidification send into indoorly, therefore, in the strict machine room of air humidity, air cleanliness, can't use.
For traditional heat exchange of heat pipe, only have in the situation of temperature difference of some degrees centigrade (being generally more than 5-8 ℃) in indoor and outdoor, could start, just can reach the effect of saving air conditioning energy consumption.This has determined traditional heat exchange of heat pipe only in the very limited time in 1 year, and when outdoor temperature is lower, and indoor and outdoor could start and reach energy-conservation effect when enough temperature differences are arranged; Only also determined in the lower area of year-round average temperature (such as: northern area and west area etc.), just can carry out large-scale energy efficiency promotion and application, in the higher area of year-round average temperature (such as: southern area etc.), just there is not the condition of large-scale promotion and application.
At present, the type of cooling that traditional heat exchange of heat pipe adopts is divided into two kinds of air cooling way and water-cooling patterns: (1) air-cooled hot-pipe system: namely adopt outdoor cold wind as the low-temperature receiver of heat-pipe refrigerating, the advantage of air-cooled hot-pipe system is small investment, be applicable to new, the reducing energy consumption of old machine room, but, because the efficient of air cooling system is lower, causes the amount of energy saving of air-cooled hot-pipe system and fractional energy savings to be starkly lower than the water-cooled guard system; (2) water-cooled guard system: namely adopt the lower recirculated water of outdoor temperature, low-temperature receiver as heat-pipe refrigerating, the advantage of water-cooled guard system is because the efficient of water refrigeration is high, the amount of energy saving that brings and fractional energy savings are higher than air-cooled hot-pipe system, but, owing to will build water circulation system, cause the investment of this water-cooled guard system many, and be not suitable for the reducing energy consumption of old machine room, can only be applicable to the Energy-saving Projects of new room.
Summary of the invention
A kind of refrigerating efficiency is high, Energy Efficiency Ratio is high, small investment with regard to being to provide in order to address the above problem for purpose of the present invention, and needn't set up new water circulation system again, can be widely used in the direct evaporation separated heat pipe heat exchanger of the new refrigeration modes of new, old machine room energy-saving project.
In order to achieve the above object, the present invention has adopted following technical scheme:
Direct evaporation separated heat pipe heat exchanger of the present invention comprises indoor set and off-premises station, described indoor set comprises indoor working medium coil pipe and indoor fan, described off-premises station comprises outdoor working medium coil pipe and outdoor fan, and described indoor working medium coil pipe forms hot-pipe system jointly with described outdoor working medium coil pipe and the working medium tube that is connected between the two; Described off-premises station also comprises wet film, spray thrower and water tank, and described wet film places the inlet air side of described outdoor working medium coil pipe, and described spray thrower places the top of described wet film, and the water inlet of described spray thrower is connected with the delivery port of described water tank by water pipe.
During operation, outdoor air is behind process wet film under the outdoor fan effect, its temperature is able to remarkable reduction in the water evaporation process, generally can reduce 5-10 ℃, and then through outdoor working medium coil pipe, make the gaseous working medium (such as freon) in the outdoor working medium coil pipe become liquid refrigerant, the heat of release is taken away by cold wind; Liquid refrigerant flows to indoor working medium coil pipe by connecting working medium tube under the effect of its deadweight, in indoor working medium coil pipe, because the temperature of the room air that indoor fan brings is higher, liquid refrigerant changes gaseous state into by liquid state, simultaneously heat absorption, the hot blast temperature that indoor fan brings is blown out by indoor fan after reducing, and reduces indoor temperature; Simultaneously, gaseous working medium volume in vaporescence increases, and pressure increases, and enters outdoor working medium coil pipe by connecting working medium tube, enters next circulation.
As preferably, the top opening of described water tank also places the below of described wet film, be provided with water circulating pump between described water tank and the described spray thrower, the delivery port of described water tank is connected with the water inlet of described water circulating pump by water pipe, and the delivery port of described water circulating pump is connected with the water inlet of described spray thrower by water pipe.Water in the water tank forms circulation in off-premises station, after after a while, because evaporation can make discharge reduction, so need to replenish a certain amount of water in water tank.
The delivery port of described water circulating pump is equipped with triple valve, one of them valve port of described triple valve is connected with the water inlet of described spray thrower by water pipe, wherein another valve port of described triple valve by water pipe with access in the described water tank by water pipe again after control valve is connected.Can control the water yield that enters in the spray thrower by control valve.
Further, the casing top of described water tank is provided with water inlet pipe and overflow pipe, and the lower box of described water tank is provided with drainpipe, on the described drainpipe draining valve is installed.
As preferably, described outdoor fan places between described wet film and the described outdoor working medium coil pipe.
Further, the inlet air side of described wet film is provided with airstrainer, to reduce airborne dust.
For the ease of realizing automatic control, described direct evaporation separated heat pipe heat exchanger also comprises temperature/humidity sensor and central controller, described temperature/humidity sensor is a plurality of and is arranged at respectively the air intake vent of the air outlet of the air intake vent of described indoor set, described indoor set, described off-premises station and the air outlet of described off-premises station, and the signal output part of each described temperature/humidity sensor is connected with the temperature of described central controller/Humidity Detection signal input part respectively.
For the ease of operation, the outdoor power distribution cabinet for power supply and power supply control is installed in the described off-premises station, the interior distribution cabinet for power supply and power supply control is installed in the described indoor set.
For the ease of flowing of working medium, in the described hot-pipe system, described indoor working medium coil pipe is evaporation tube, described outdoor working medium coil pipe is condenser pipe, the upper end of described indoor working medium coil pipe connects by being connected working medium tube with the upper end of described outdoor working medium coil pipe, and the lower end of described indoor working medium coil pipe connects by being connected working medium tube with the lower end of described outdoor working medium coil pipe.
Beneficial effect of the present invention is:
The present invention is by being applied to hot-pipe system with refrigeration close to the direct-evaporation-type refrigeration modes of traditional water refrigeration modes, form and directly evaporate efficiently separated heat pipe, in machine room, there is not outdoor wind to enter, avoided outside air to indoor air pollution, and solved because of humid air and enter the indoor problem that causes indoor humidity to improve; Air after the direct-evaporation-type refrigeration has guaranteed indoor highly effective refrigeration to outdoor working medium coil pipe temperature with high efficiency, and its Energy Efficiency Ratio is high, and small investment, and has prolonged the running time of heat exchange of heat pipe, can be widely used in new room construction and old machine room energy-saving transformation; By temperature/humidity sensor being set and by the central controller centralized Control, making direct evaporation separated heat pipe heat exchanger of the present invention form automatic control, reach best Indoor Temperature/humidity control and energy-conservation purpose.
More specifically, direct evaporation separated heat pipe heat exchanger of the present invention is compared with traditional refrigerating plant, has the following advantages respectively:
1, the advantage of comparing with traditional air-cooled hot-pipe system:
(1) prolongs the running time of heat pipe air conditioner unit under power save mode, generally speaking, can prolong the heat pipe energy-saving state running time about 1-2 month;
(2) owing to having improved the temperature difference of the inside and outside machine of heat pipe, can effectively improve heat exchange efficiency and fractional energy savings;
(3) simultaneously, owing to having improved the temperature difference of the inside and outside machine of heat pipe, can effectively improve the Energy Efficiency Ratio (COP) of heat pipe operation;
(4) also solved the use problem of higher area (such as Guangdong, Fujian, Hainan, Guangxi etc.) the heat pipe air conditioner unit of some long-term outdoor temperatures.
Therefore, the scope of application of direct evaporation separated heat pipe heat exchanger of the present invention and scene are considerably beyond using traditional air-cooled hot-pipe system.
2, the advantage of comparing with traditional water-cooled guard system:
(1) energy-saving efficiency of direct-evaporation-type hot-pipe system is considerably beyond traditional air-cooled hot-pipe system, and close to the water-cooled guard system, still, the cost of reducing energy consumption is but low quite a lot of than the water-cooled guard system;
(2) the direct-evaporation-type hot-pipe system go for newly, the reducing energy consumption of old machine room, and the water-cooled guard system is only applicable to the Energy-saving Projects of new room.
Therefore, direct evaporation separated heat pipe heat exchanger of the present invention is compared with traditional water-cooled guard system, has larger promotion potential and applicability.
3, the advantage of comparing with traditional direct-evaporation-type refrigerator system (being the wet film VMC):
(1) although, the direct-evaporation-type refrigerator system all is equipped with temperature, humidity sensor is collected the opening and closing warm in the machine room, that humidity data is controlled the direct-evaporation-type air conditioner, but, tradition direct-evaporation-type air conditioner in use, can so that the humidity of the interior air of machine room is improved, bring the potential safety hazard of machine room inevitably; And the present invention is because what adopt is the heat pipe heat exchanging technology, and the wet air by cascade does not enter machine room inside, then avoids fully and got rid of this technical shortcoming;
(2) in the direct-evaporation-type refrigerator system, although the filtration (filtration is too large, then can cause air quantity and refrigerating capacity deficiency) of wet film and screen pack is arranged, outdoor air still can enter machine room inside, may cause the decline of machine room cleannes; And in the present invention, outdoor air is completely cut off fully, is shielded outside machine room, can not cause the decline of machine room cleannes.
Therefore, direct evaporation separated heat pipe heat exchanger of the present invention more is applicable to building environment humidity, strict core machine room, the IDC machine room of cleannes than direct-evaporation-type refrigerator system.
Description of drawings
Fig. 1 is the overall structure schematic diagram of direct evaporation separated heat pipe heat exchanger of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described in detail:
As shown in Figure 1, direct evaporation separated heat pipe heat exchanger of the present invention comprises indoor set 23 and off-premises station 12, indoor set 23 comprises indoor working medium coil pipe 10 and indoor fan 25, off-premises station 12 comprises outdoor working medium coil pipe 11, outdoor fan 28, wet film 4, spray thrower 5 and water tank 14, outdoor fan 28 places between wet film 4 and the outdoor working medium coil pipe 11, indoor working medium coil pipe 10 forms hot-pipe system jointly with outdoor working medium coil pipe 11 and the working medium tube that is connected between the two, the connection working medium tube 21 that described connection working medium tube is divided into interior ventilation attitude working medium is connected connection working medium tube 19 with the Nei Tong liquid refrigerant, indoor working medium coil pipe 10 is evaporation tube, outdoor working medium coil pipe 11 is condenser pipe, the upper end of the upper end of indoor working medium coil pipe 10 and outdoor working medium coil pipe 11 connects by the working medium tube 21 that is connected of interior ventilation attitude working medium, the lower end of the lower end of indoor working medium coil pipe 10 and outdoor working medium coil pipe 11 connects by the working medium tube 19 that is connected of interior logical liquid refrigerant, is connected the two ends of connection working medium tube 19 and also is respectively arranged with angle valve 9 in the two ends of the connection working medium tube 21 of interior ventilation attitude working medium with the Nei Tong liquid refrigerant; Wet film 4 places the inlet air side of outdoor working medium coil pipe 11, and spray thrower 5 places the top of wet film 4, and the water inlet of spray thrower 5 is connected by the delivery port of water pipe with water tank 14.
As shown in Figure 1, in the refined structure of off-premises station 12, the top opening of water tank 14 also places the below of wet film 4, be provided with water circulating pump 16 between water tank 14 and the spray thrower 5, the delivery port of water tank 14 is connected by the water inlet of water pipe with water circulating pump 16, the delivery port of water circulating pump 16 is connected with the first valve port of triple valve 8 by water pipe, the second valve port of triple valve 8 is connected with the water inlet of spray thrower 5 by water pipe 6, the 3rd valve port of triple valve 8 by water pipe with after control valve 15 is connected again by in the water pipe access water tank 14, the casing top of water tank 14 is provided with water inlet pipe 13 and overflow pipe 17, the lower box of water tank 14 is provided with drainpipe, and draining valve 18 is installed on the described drainpipe; The inlet air side of wet film 4 is provided with airstrainer 1; Outdoor power distribution cabinet 3 for power supply and power supply control is installed in the off-premises station 12, the interior distribution cabinet 27 for power supply and power supply control is installed in the indoor set 23; Also show the control module 7 that control chip and display screen are integrated in one that is installed on the indoor set 23 among the figure.
As shown in Figure 1, for the ease of realizing automatic control, described direct evaporation separated heat pipe heat exchanger also comprises four temperature/humidity sensors 2,20,22,26 and the central controller (not shown), temperature/humidity sensor 2 is arranged at the air intake vent of off-premises station 12, temperature/humidity sensor 20 is arranged at the air outlet of off-premises station 12, temperature/humidity sensor 22 is arranged at the air intake vent of indoor set 23, temperature/humidity sensor 26 is arranged at the air outlet of indoor set 23, the signal output part of temperature/humidity sensor 2, the signal output part of temperature/humidity sensor 20, the signal output part of temperature/humidity sensor 22, the signal output part of temperature/humidity sensor 26 is connected with the temperature of central controller/Humidity Detection signal input part respectively.Central controller is arranged on the control chip in the control module 7, the person's control of being convenient to the Room management.
Hot-pipe system is by outdoor working medium coil pipe 11, indoor working medium coil pipe 10 and be connected working medium tube and jointly form hot-pipe system, during operation, has working medium (such as fluorine Lyons) to flow in the pipe, and these structures are traditional conventional structure, and concrete parts are not shown in the drawings.
During operation, outdoor air is behind process wet film 4 under outdoor fan 28 effects, its temperature is able to remarkable reduction in the water evaporation process, generally can reduce 5-10 ℃, and then through outdoor working medium coil pipe 11, make the gaseous working medium (such as freon) in the outdoor working medium coil pipe 11 become liquid refrigerant, the heat of release is taken away by cold wind; Liquid refrigerant connection working medium tube 19 by interior logical liquid refrigerant under its Gravitative Loads flows to indoor working medium coil pipe 10, in indoor working medium coil pipe 10, because the temperature of the room air that indoor fan brings is higher, liquid refrigerant changes gaseous state into by liquid state, simultaneously heat absorption, indoor fan 25 blowing cold airs reduce indoor temperature; Gaseous working medium volume in vaporescence increases, and pressure increases, and the connection working medium tube 21 by interior ventilation attitude working medium enters outdoor working medium coil pipe 11, enters next circulation.
Directly evaporation separated heat pipe heat exchanger is by control module 7 controls on the indoor set 23, and method is as follows:
(1) when the temperature difference of the new air temperature of processing through wet film 4 and indoor air temperature more than 5 ℃ the time, open directly evaporation separated heat pipe heat exchanger, close the air-conditioning in the machine room, the refrigeration duty of machine room inside is provided by direct evaporation separated heat pipe heat exchanger fully.
(2) when the temperature difference of the new air temperature of processing through wet film 4 and indoor air temperature below 5 ℃ the time, and when satisfying the direct Energy Efficiency Ratio of evaporation separated heat pipe heat exchanger and be COP greater than the COP of air conditioner in machine room, directly evaporation separated heat pipe heat exchanger and air conditioner in machine room are opened simultaneously, and the refrigeration duty in the machine room is by direct evaporation separated heat pipe heat exchanger and air conditioner in machine room shared.
(3) when the temperature difference of the new air temperature of processing through wet film 4 and indoor air temperature below 5 ℃ the time, and when satisfying the COP that directly evaporates the separated heat pipe heat exchanger less than the COP of air conditioner in machine room, close direct evaporation separated heat pipe heat exchanger, the refrigeration duty in the machine room is provided by air-conditioning fully.
(4) when outdoor temperature is low (such as: be lower than 5 ℃), freeze in order to prevent spray thrower 5 and wet film 4, should close water circulating pump 16 and spray thrower 5, directly outdoor new wind is sent into the condenser 11 air inlet places of off-premises station 12.
In conjunction with Fig. 1, outdoor new wind is by wet film 4 rear realization constant enthalpy temperature-fall periods, its wet film 4 front and back air inlet/outlet temperature difference can reach 5 ℃ ~ 10 ℃, the condensation end that new wind after wet film 4 coolings is sent into heat exchange of heat pipe is the air inlet of outdoor working medium coil pipe 11, the indoor heat that cycle fluid absorbs is taken away, be discharged to outdoorly, can effectively prolong like this and utilize heat exchange of heat pipe to carry out the energy-conservation time.For example, one of condition that the conventional heat pipe system starts is that indoor/outdoor temperature-difference reaches more than 5 ℃, 25 ℃ of indoor design temperature values, and therefore, hot-pipe system can start when only having outdoor temperature to be lower than 20 ℃.But direct evaporation separated heat pipe heat exchanger of the present invention but can be 25 ℃ of outdoor temperatures, even (25-30 ℃) uses in the higher outdoor temperature situation.Effectively prolonged the service time of heat exchange of heat pipe.
Also need to illustrate, direct evaporation separated heat pipe heat exchanger of the present invention can adopt common split type, the structure such as the rack backboard is split type or the machine room furred ceiling is split type according to practical application, is common split-type structural in above-described embodiment.
Need at last to illustrate, direct-evaporation-type separated heat pipe heat exchanger of the present invention can be selected direct-evaporation-type refrigeration part and separated heat pipe heat exchanger integrated as a whole according to the difference of actual application environment; Also can select direct-evaporation-type refrigeration part and separated heat pipe heat exchanger are separated, connect with an air channel, the cold wind after by the air channel direct-evaporation-type refrigeration part being lowered the temperature is sent into the separated heat pipe heat exchanger.

Claims (9)

1. one kind directly evaporates the separated heat pipe heat exchanger, comprise indoor set and off-premises station, described indoor set comprises indoor working medium coil pipe and indoor fan, described off-premises station comprises outdoor working medium coil pipe and outdoor fan, and described indoor working medium coil pipe forms hot-pipe system jointly with described outdoor working medium coil pipe and the working medium tube that is connected between the two; It is characterized in that: described off-premises station also comprises wet film, spray thrower and water tank, described wet film places the inlet air side of described outdoor working medium coil pipe, described spray thrower places the top of described wet film, and the water inlet of described spray thrower is connected with the delivery port of described water tank by water pipe.
2. direct evaporation separated heat pipe heat exchanger according to claim 1, it is characterized in that: the top opening of described water tank also places the below of described wet film, be provided with water circulating pump between described water tank and the described spray thrower, the delivery port of described water tank is connected with the water inlet of described water circulating pump by water pipe, and the delivery port of described water circulating pump is connected with the water inlet of described spray thrower by water pipe.
3. direct evaporation separated heat pipe heat exchanger according to claim 2, it is characterized in that: the delivery port of described water circulating pump is equipped with triple valve, one of them valve port of described triple valve is connected with the water inlet of described spray thrower by water pipe, wherein another valve port of described triple valve by water pipe with access in the described water tank by water pipe again after control valve is connected.
4. according to claim 1,2 or 3 described direct evaporation separated heat pipe heat exchangers, it is characterized in that: the casing top of described water tank is provided with water inlet pipe and overflow pipe, the lower box of described water tank is provided with drainpipe, on the described drainpipe draining valve is installed.
5. direct evaporation separated heat pipe heat exchanger according to claim 1, it is characterized in that: described outdoor fan places between described wet film and the described outdoor working medium coil pipe.
6. according to claim 1,2 or 5 described direct evaporation separated heat pipe heat exchangers, it is characterized in that: the inlet air side of described wet film is provided with airstrainer.
7. direct evaporation separated heat pipe heat exchanger according to claim 1, it is characterized in that: described direct evaporation separated heat pipe heat exchanger also comprises temperature/humidity sensor and central controller, described temperature/humidity sensor is a plurality of and is arranged at respectively the air intake vent of the air outlet of the air intake vent of described indoor set, described indoor set, described off-premises station and the air outlet of described off-premises station, and the signal output part of each described temperature/humidity sensor is connected with the temperature of described central controller/Humidity Detection signal input part respectively.
8. according to claim 1 or 7 described direct evaporation separated heat pipe heat exchangers, it is characterized in that: the outdoor power distribution cabinet for power supply and power supply control is installed in the described off-premises station, the interior distribution cabinet for power supply and power supply control is installed in the described indoor set.
9. direct evaporation separated heat pipe heat exchanger according to claim 1, it is characterized in that: in the described hot-pipe system, described indoor working medium coil pipe is evaporation tube, described outdoor working medium coil pipe is condenser pipe, the upper end of described indoor working medium coil pipe connects by being connected working medium tube with the upper end of described outdoor working medium coil pipe, and the lower end of described indoor working medium coil pipe connects by being connected working medium tube with the lower end of described outdoor working medium coil pipe.
CN201210550836XA 2012-12-18 2012-12-18 Direct evaporation split type heat pipe heat-exchanger Pending CN102954548A (en)

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Application publication date: 20130306