CN102159898B - Method for cooling heat exchanger - Google Patents
Method for cooling heat exchanger Download PDFInfo
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- CN102159898B CN102159898B CN201080002246.2A CN201080002246A CN102159898B CN 102159898 B CN102159898 B CN 102159898B CN 201080002246 A CN201080002246 A CN 201080002246A CN 102159898 B CN102159898 B CN 102159898B
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- water
- heat exchanger
- premises station
- cooling means
- dish
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
- F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/54—Free-cooling systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Water treated with a reverse osmosis membrane device (12) is introduced into a circulation line (23) and sprinkled from spray nozzles (14) onto outdoor units (heat exchangers) (15a to 15d). Since the treated water contains none of Ca, Mg, and Cl ions and the like, scale deposition does not occur on the heat exchangers (15a to 15d) and a high cooling effect can be maintained.
Description
Technical field
The present invention relates to a kind ofly can improve refrigerating efficiency, the cooling means that significantly reduces the heat exchanger of power consumption and the device being applicable to implement the method.
Background technology
Thermantidote is by indoor set and for being combined to outside off-premises station by the Thermal release of indoor, and off-premises station has the heat exchanger for heat release.
Usually, in the office building in city, off-premises station is arranged on roof mostly, in large-scale mansion, is configured in greatly in the limited space on roof mainly with the state that multiple off-premises station (heat exchanger) is concentrated.Roof is due under being exposed to very strong sunlight summer and irradiating, so the temperature of off-premises station (heat exchanger) self can rise, thus exothermic character reduces.Especially when multiple off-premises station (heat exchanger) centralized configuration is in narrow space, the heat produced by each off-premises station riddles in narrow space, cause the air themperature of off-premises station setting position to rise further, therefore, exothermic character reduces greatly.In addition, also have following problem: arrange thing etc. close to configuration at other, when the circulation of air is deteriorated, by the heat produced by off-premises station entirety, make the temperature of setting area increase further, exothermic character reduces greatly.Like this, when exothermic character reduces, indoor cold air becomes insufficient, causes further increasing electric power the vicious circle consumed to improve air-cooling system ability.
In addition, in large-scale plant, even if arrange off-premises station in the north side of building, because refrigeration space is excessive, therefore, sometimes still can reduce in cooling in summer efficiency, as the factory that food processing or food material are processed, when needing to maintain certain temperature, the design temperature of air-cooling system sometimes must be reduced to the air-cooling system that operates.
In the invention of JP 2000-65409 publication, disclose a kind of by carrying out water spray to off-premises station (heat exchanger), for improving the control device of refrigerating efficiency.In the invention of JP 2001-317821 publication, similarly disclose the thermantidote that one can control to carry out to off-premises station (heat exchanger) water spray.In the invention of JP 2004-317064 publication, similarly disclose a kind of cold gas system off-premises station (heat exchanger) being carried out to soft water spraying.Other, in the invention of Unexamined Patent 5-223364 publication, Unexamined Patent 10-213361 publication, Unexamined Patent 11-142022 publication, special permission No. 3739530 publication, also disclose a kind of technology carrying out cooling heat exchanger by carrying out water spray.
Summary of the invention
In the invention of JP 2000-65409 publication, completely not about the record at the water source used, can be interpreted as running water to common-sense.Such as, in summer, if continue to carry out running water spraying to heat exchanger, then can adhere to Ca ion contained in from running water or a large amount of scale of Mg ion, silica composition etc. on the surface of heat exchanger.Like this, the exothermic character of heat exchanger reduces, and becomes cisco unity malfunction, therefore, in order to prevent the generation of this situation, in the invention of JP 2000-65409 publication, when water spray, be necessary to carry out tight control, the device for water spray also becomes complicated.Therefore, except the price of device self uprises, the power consumption for this device that operates also becomes large.In addition, also have and adhere to scale or heat exchanger on the heat exchanger by the problem of the chloride ion corrosion in running water.
In the invention of JP 2001-317821 publication, have the record about charge for water in [0027] [0039] section, therefore, can determine to heat exchanger carry out be running water spraying.Like this, as mentioned above, except adhering to the problem of scale, also there is heat exchanger by the problem of the chloride ion corrosion in running water.
In the invention of JP 2004-317064 publication, because the soft water recorded heat exchanger carries out being obtained by soft water maker is sprayed, therefore, it is possible to solve the problem coming from the scale of Ca ion or Mg ion to a certain extent, but the scale attachment issue brought by silica composition can not get eliminating, further, because described soft water maker employs ion exchange resin, therefore, in the soft water generated, the amount of Ca ion or Mg ion decreases, but, be mixed into Na ion that is that generated by ion-exchange and Ca ion and Mg ion total molar equivalent, by the effect of salt (NaCl) generated with chloride binding, likely carry out stronger corrosion.
As mentioned above, in the invention of JP 2000-65409 publication, JP 2001-317821 publication, JP 2004-317064 publication, scale is unresolved to the problem of the attachment of heat exchanger or the corrosion of heat exchanger, also can cause adverse effect to the reduction effect of power consumption.In addition, because the removing of scale or the sustainable management of rust cleaning also become complicated, the lifetime of heat exchanger, therefore, does not also contribute fully to the cost cutting of entirety.
The invention of above-mentioned JP 2000-65409 publication, JP 2001-317821 publication, JP 2004-317064 publication, Unexamined Patent 5-223364 publication, Unexamined Patent 10-213361 publication, Unexamined Patent 11-142022 publication, special permission No. 3739530 publication, the key element of defined is all detected by the various sensor such as temperature or electric power, intermittently carry out water (running water) spraying, respectively heat exchanger is cooled.But in such cooling means, as the record of the 38th section, JP 2001-317821 publication, as shown in Figure 5, when increasing the water yield, when reaching certain specified quantitative, cooling effect can not continue to improve again, reaches plateau.
The object of the present invention is to provide a kind of cooling means of heat exchanger and be applicable to implement the device of the method, it can suppress power consumption significantly, and the service life of heat exchanger also can reach the degree equal with the situation of not sprinkling water.
As solution to the problems described above, the invention provides a kind of cooling means of heat exchanger, this cooling means is when combining the thermantidote running having indoor set and off-premises station, the method that the heat exchanger had described off-premises station cools, wherein, the method comprises: at least spray the process water by reverse osmosis membrane processing device to described heat exchanger.
As the method solving another problem, present invention also offers a kind of cooling device of heat exchanger, this cooling device is when combining the thermantidote running having indoor set and off-premises station, the device that the heat exchanger had described off-premises station cools, wherein, this device comprises: reverse osmosis membrane processing device, sprays the watering unit by the process water of described reverse osmosis membrane processing device to described heat exchanger, and as required for configuring the Water Sproading dish of described off-premises station.
The cooling means of the heat exchanger of the application of the invention, can obtain following effect:
(1) due to the power consumption required for air-cooling system significantly can be reduced, therefore, significantly can not only reduce the electricity charge, significantly can also reduce the generation of carbon dioxide;
(2) due to scale can not be adhered on the heat exchanger, heat exchanger can not be corroded, therefore, it is possible to obtain the service life with the device of the situation same degree of not sprinkling water;
(3) watering without scale attachment issue becomes possibility, and while cools down, the periphery with the off-premises station of heat exchanger also cools by sprinkling water, and can reduce the temperature of off-premises station setting place entirety.When roof, mansion first-class centralized configuration multiple stage off-premises station, the effect that setting place air themperature reduces can be improved, and effectively can relax the heat island phenomenon in city.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the cooling device of the off-premises station (heat exchanger) that the method for operation being applicable to thermantidote is implemented;
Fig. 2 is the schematic diagram of the cooling device of the off-premises station (heat exchanger) that other embodiment of the method for operation being applicable to thermantidote is implemented;
Fig. 3 is the photo representing the state of spraying the heat exchanger of RO process water after 14 days in test example 1;
Fig. 4 is the photo representing the state of spraying the heat exchanger of running water after 14 days in test example 1.
Description of reference numerals
In figure, symbol 10 represents the cooling device of off-premises station (heat exchanger); 11 represent water source; 12 represent RO treating apparatus; 13 represent by-pass valve control; 14 represent Water spray nozzle; 15a-15d represents off-premises station (heat exchanger); 16a-16d represents off-premises station (heat exchanger); 20 represent Water Sproading dish; 23 represent circulation line; 24 represent water recovery culvert.
Detailed description of the invention
The cooling means > that the cooling device of the off-premises station (heat exchanger) that < utilizes Fig. 1 to represent carries out
Fig. 1 is the schematic diagram of the cooling device 10 of the off-premises station (heat exchanger) that the cooling means being applicable to heat exchanger of the present invention is implemented.
, there is the situation of the intake of running water at water source 11, also can utilize this intake, if mansion etc., also can utilize the water tank be arranged on roof.Water source 11 self is not included in the cooling device 10 of off-premises station (heat exchanger).
From water source (running water, water for industrial use or well water) 11 through pipeline 21, running water is transported to the reverse osmosis membrane processing device (RO treating apparatus) 12 with pump and processes, obtain process water (RO process water).Process water now, preferred electrical conductivity is less than 20 μ S/cm, is more preferably 4-10 μ S/cm, for eliminating in fact the process water of Ca ion, Mg ion, Na ion, Cl ion, ion like silica etc.
RO treating apparatus 12 can use known treating apparatus, and such as, the device model VCR40 that Daicen Membrane Systems Ltd. can be used to sell is serial, VCR80 is serial, NER40 is serial, NER80 is serial, SHR is serial.
Then, from RO treating apparatus 12 through hydraulic pipeline 22, RO process water is transported to circulation line 23.Now, by the by-pass valve control 13 arranged as required, the control etc. of the stopping of water delivery and beginning, carrying capacity can be carried out.
Multiple off-premises stations (heat exchanger) 15a-15e that is connected with indoor set with not shown pipeline (sometimes also general name " heat exchanger 15 ") is placed on suitable base.As shown in the figure, Water Sproading dish 20 can be set to reclaim the water of sprinkling.
Circulation line 23 is provided with multiple Water spray nozzle 14, and Water spray nozzle 14 is arranged on can just to the top of the gelled side of the tool of heat exchanger 15.Circulation line 23 also can utilize not shown backing material to support, and also can directly be fixed on off-premises station (heat exchanger) 15a-15e, also can for being just placed on the state on off-premises station (heat exchanger) 15a-15e.
In the device 10 of Fig. 1, by-pass valve control 13, Water spray nozzle 14, hydraulic pipeline 22, circulation line 23, reclaim line 24 and pump form watering unit.
In FIG, circulation line 23 is configured in the side of heat exchanger 15, also can with by the ceiling face of heat exchanger 15 (by heat exchanger 15 just above) mode and configure, in this case, Water spray nozzle 14 be also positioned at heat exchanger 15 just above.In addition, by heat exchanger 15 just above circulation line and as shown in Figure 1 by the circulation line 23 of heat exchanger 15 side, these two kinds of modes can also combine and arrange.
During air-cooling system running, the RO process water flowing through circulation line 23 is sprayed to the heat exchanger 15 that the temperature because of heat release rises.In the present invention, so-called watering is the spraying of invention comprising JP 2000-65409 publication, JP 2001-317821 publication, JP 2004-317064 publication, also comprises the concept of the watering of the shape spray more than the injection flow rate of spraying.
Watering amount can according to the suitably increase and decrease such as temperature or sunlight intensity.In addition, watering preferably continues watering in air-cooling system running, but also temporarily can stop according to time zone or meteorological condition etc.To the cooling effect of heat exchanger 15, realize primarily of water evaporation removing heat of gasification, but when continuing watering in air-cooling system running, cool by the heat of heat exchanger 15 is transferred in water, therefore, cooling effect can be improved further.
The RO process water be sprayed, is accumulated in Water Sproading dish 20, therefore, is reclaimed the RO process water be sprayed, be again transported to RO treating apparatus, carry out reprocessing by reclaim line 24.The RO process water that reprocessing obtains, is supplied to circulation line 23 through hydraulic pipeline 22 again.In the midway of reclaim line 24, the filter for removing sand or dust etc. also can be set.
Water Sproading dish 20 is made up of bottom surface sections 20a and the sidewall portion 20b be formed in around bottom surface sections, also can, from heat exchanger 15a side direction heat exchanger 15e side with slowly tilting, make the recovery of the water accumulated become easy.The degree of depth of Water Sproading dish 20 is preferably below 10cm, and the depth of water in Water Sproading dish 20 is preferably about 1-5cm.The length of the bottom surface sections of Water Sproading dish 20 and width suitably can set according to the arranging situation of off-premises station.Such as, as shown in Figure 1, the width of the length of 1.2-1.5 times of left and right of the entire length of the length direction of off-premises station (heat exchanger) 15a-15e, 1.5-2 times of left and right of the width of width can be set as.
When employing Water Sproading dish 20, due to the water recycling of accumulation can be reclaimed, therefore, from the viewpoint of effective utilization of water resource preferably, when taking running water as water source, from the viewpoint of saving water rate and preferred.
When employing Water Sproading dish 20, due to also heat of gasification can be removed by the water evaporation be accumulated in Water Sproading dish 20, therefore, the bulk temperature that heat exchanger 15 overall space is set also can be made to reduce, also can improve the cooling effect to each heat exchanger.
In addition, by utilizing such heat of gasification being accumulated in the water in Water Sproading dish 20, even if reduce watering amount, necessary cooling effect also can be maintained.Therefore, such as, though when implement repeat watering 30 seconds, stop the interval watering of the watering circulation of 30 seconds, also heat of gasification can be removed by the evaporation of water be accumulated in Water Sproading dish 20 between watering withholding period, therefore, it is possible to maintenance cooling effect, simultaneously can water-saving.
Be not accumulated in Water Sproading dish 20 or the water yield is less at running beginning initial stage water, sprinkle water continuously to water accumulation from running, from water accumulation, consider the key elements such as environment temperature, also suitably can combine watering continuously and implement with interval watering.
Water Sproading dish 20, form hole by the part in advance at sidewall portion 20b or form recess, intentionally make the water after watering overflow, be not only heat exchanger 15, its periphery (outside of Water Sproading dish 20) also can be sprinkled water.In addition, in advance at the many places installation surface Water spray nozzle laterally of circulation line 23, make also to sprinkle water to the outside of Water Sproading dish 20.
Cooling device 10 shown in Fig. 1 has Water Sproading dish 20, but also can be suitable for and do not use Water Sproading dish 20, directly spills water-cooled method to the ground of placing heat exchanger 15a-15e from Water spray nozzle 14.When the method for directly sprinkling water to this ground, owing to not using Water Sproading dish 20, therefore, device is easily arranged, and can give play to and use the situation of Water Sproading dish 20 with contour cooling effect.
The cooling means > that the cooling device of the off-premises station (heat exchanger) that < utilizes Fig. 2 to represent carries out
Fig. 2 is the schematic diagram of the cooling device 100 being applicable to the off-premises station (heat exchanger) implemented as the cooling means of the heat exchanger of other embodiment of the present invention.The meaning of the parts that the numbering identical with Fig. 1 represents is identical with Fig. 1.In addition, in the device of Fig. 2, do not comprise the Water Sproading dish 20 shown in Fig. 1.
In cooling device 100, heat exchanger 15a-15e and heat exchanger 16a-16e, is configured on the base that ground 30 is placed with two row.
In cooling device 100, in the coupling part of hydraulic pipeline 22 and circulation line 23, controlled valve (magnetic valve etc.) etc. is set, from RO treating apparatus 12 when RO process water is transported to circulation line 23 by hydraulic pipeline 22, can to any one direction (in Fig. 2, water delivery to the left or to the right), or replace water delivery to both direction.
In cooling device 100, the quantity as many as of heat exchanger 10, if compared with the situation of the device shown in Fig. 1, then the heat by producing from each heat exchanger, the degree making setting place bulk temperature (temperature) increase becomes large.The temperature rises for this, and the hot exchange power of each heat exchanger is reduced.In addition, according to arranging situation, can wall be had in the front of heat exchanger 15a-15e or heat exchanger 16a-16e or other arranges thing, in this case, must consider that the temperature brought by the hot gas reflected rises.Therefore, as as described in technology in the past (JP 2000-65409 publication, JP 2001-317821 publication, JP 2004-317064 publication, Unexamined Patent 5-223364 publication, Unexamined Patent 10-213361 publication, Unexamined Patent 11-142022 publication, special permission No. 3739530 publication), if the method that employing is carried out interval water spray to each heat exchanger and cooled, cooling is fully difficult.
But, in the cooling device 100 shown in Fig. 2, owing to sprinkling water from multiple Water spray nozzle 14 couples of heat exchanger 15a-15e or heat exchanger 16a-16e, therefore, the water flowed down also can soak the ground 30 (being recycled the ground that pipeline 23 surrounds) arranging heat exchanger.Therefore, owing to can cool the space on ground 30 and ground 30 simultaneously, the air themperature of off-premises station setting position periphery can be made to reduce, therefore, the cooling effect of heat exchanger self can also be improved.
Further, in the cooling device 100 shown in Fig. 2, make it possible to sprinkle water to these both sides, inner side and outer side of circulation line 23 from the multiple Water spray nozzles 14 of part or all, by sprinkling water to inside and outside circulation line 23 simultaneously or alternately, the floor area of water-wet can also be increased further.Thereby, it is possible to improve above-mentioned cooling effect further.
In the cooling device 100 shown in Fig. 2, in the same manner as the cooling device 10 shown in Fig. 1, a circulation line 23 is configured in the mode of surrounding periphery, but also can according to the increase of the number of units of heat exchanger, configure the circulation line of 2 systems, 3 systems, can also, according to the increase of circulation line, the number of units of pump be increased.
In the cooling means of above-mentioned heat exchanger of the present invention, preferably the heat exchanger that off-premises station has is sprinkled water with the periphery comprising the ground arranging off-premises station.
In the cooling means of above-mentioned heat exchanger of the present invention, preferably the off-premises station of more than 10 is configured so that two row are above, sprinkles water to the periphery comprising the ground arranging whole off-premises stations.
In the cooling means of above-mentioned heat exchanger of the present invention, preferred off-premises station arranges in the Water Sproading dish placed on the ground, except during by beginning to cool down heat exchanger watering, and the water that accumulation watering produces in described Water Sproading dish.
In the cooling means of above-mentioned heat exchanger of the present invention, preferred off-premises station arranges in the Water Sproading dish placed on the ground, heat exchanger is sprinkled water, reclaim a part of water be accumulated in Water Sproading dish, again processed by reverse osmosis membrane processing device, as the process water recycling of spraying.
In the cooling means of above-mentioned heat exchanger of the present invention, preferred off-premises station is arranged on the roof of building, from the water source be arranged on roof to for utilizing the former water of reverse osmosis membrane processing device process to fetch water.
In the cooling means of above-mentioned heat exchanger of the present invention, be preferably less than 20 μ S/cm by the process electrical conductivity of water of reverse osmosis membrane processing device.
The cooling means of heat exchanger of the present invention, such as, owing to using the cooling device shown in Fig. 1 or Fig. 2 to spray RO process water, therefore, as technology in the past, can not adhere to scale on the heat exchanger, or corrosion heat exchanger.Therefore, between air-cooling system on-stream period in summer, except not needing scale removing or such sustainable management that eliminates rust, the life-span of heat exchanger also can reach the degree identical with the situation of not sprinkling water.
In addition, the cooling means of heat exchanger of the present invention, scale can not be made to adhere to or make Heat-exchanger Corrosion, can not be resemble " spraying " technology in the past, but sprinkle water with shape spray, watering can be continued in air-cooling system running, therefore, greatly can also improve the cooling effect of heat exchanger.
The cooling means of heat exchanger of the present invention, cooling device as shown in Figure 1, by combination water recovering tray, the evaporation of water that is accumulated in Water Sproading dish can be utilized and remove heat of gasification, thus the place of cooling settings heat exchanger is overall, therefore, the cooling effect of heat exchanger self can also be improved.Further, by combination water recovering tray, by the utilization of described heat of gasification, watering amount can also be reduced.
In addition, the cooling means of heat exchanger of the present invention, cooling device as shown in Figure 2, by directly sprinkling water on the ground, can the place of cooling settings heat exchanger overall, therefore, the cooling effect of heat exchanger self can also be improved.
Further, the cooling means of heat exchanger of the present invention, the power consumption of RO treating apparatus, with the difference of the power consumption of the cold air reduced by being suitable for the present invention very greatly, air-cooling system scale is larger, and the reduction effect of power consumption is also larger.There is in heater unit multiple alternative (lam-oil, gas etc.) in the winter time, as the alternative of the air-cooling system in summer, the degree of also just universal recently gas-fired heat pump, by being suitable for the cooling means of heat exchanger of the present invention, the peak value of the power consumption in summer declines greatly, therefore, it is possible to sign a contract with less electricity and Utilities Electric Co., this is also related to the saving of basic charge.In addition, gas-fired heat pump also has heat exchanger, therefore, by being suitable for cooling means of the present invention, can expect to cut down energy consumption.
Further, by implementing the cooling means of heat exchanger of the present invention in the region of spaciousness, (such as, the mitigation of heat island phenomenon) is reduced to the reduction effect of the carbon dioxide of region entirety or temperature also effective.
The cooling means of heat exchanger of the present invention, (situation of the off-premises station of above centralized configuration more than 10 is especially arranged with two row or three) when cooling multiple off-premises stations of concentrated setting on the roof of the building as the mansion in city, and especially applicable when the off-premises station of the thermantidote freezed to the large space of large-scale plant etc. cools.
Embodiment
Embodiment 1
Utilize following condition, estimate the greatest requirements electric power on the power consumption of the air-cooling system of inapplicable situation of the present invention and the basis as the contract electricity charge, and be suitable for the power consumption of air-cooling system and the greatest requirements electric power of situation of the present invention.
Place: the bakery and confectionery in Nagano county, off-premises station 40, wastage in bulk or weight electric power 272kwh
Period: from May 15th, 2008 to 4.5 months of September 30 periods
Time: from point at 7 in the morning to afternoon 7
Watering design temperature: 25 DEG C
RO treating apparatus: Daicen Membrane Systems Ltd.'s system (treating capacity: 3000L/hr, electrical conductivity 6-8 μ S/cm)
The power consumption that always makes required for the cold air of inapplicable situation of the present invention is 4,115,000KW, and the power consumption that always makes required for air-cooling system being suitable for situation of the present invention is 3,919,000KW.The power consumption of RO treating apparatus is therebetween about 9000KW.In addition, the greatest requirements electric power of inapplicable situation of the present invention is 850KW, and the greatest requirements electric power being suitable for situation of the present invention is 755KW.
Embodiment 2
Off-premises station and Water Sproading dish are set in the laboratory that temperature is adjusted to 27.4 DEG C (outside air temperatures that table 1 represents), thermantidote (MBZ-J228 of society of Mitsubishi Electric Corporation) is set outside described laboratory.In this condition while the air-cooling system that operates, under the following conditions RO process water is sprayed to off-premises station.Result represents in Table 1.
(watering condition)
Water: running water (water temperature about 25 DEG C)
Watering amount: 400ml/min
Nozzle number to off-premises station is sprinkled water: 2
Watering form: always sprinkle water
RO device: NRX20-P (Daicen Membrane Systems Ltd.'s system)
RO film: SW02200-DRA982P
RO infiltration water electrical conductivity: 5 μ S/cm
Table 1
Electric power reduction rate (%): ((power consumption of the power consumption-each time phase before just starting of sprinkling water)/power consumption before just starting of sprinkling water) × 100
Discharge temperature (DEG C): the surface temperature of the refrigerator pipes before heat exchanger entrance, this refrigerator pipes be used for cold-producing medium indoor machine return off-premises station
Return temperature (%): the surface temperature of the refrigerator pipes after heat exchanger outlet, this refrigerator pipes be used for cold-producing medium outdoor machine return indoor set
Cold air temperature (%): the temperature of the cold air of machine releasing indoor
Delivery temperature (%): through the heat exchange of off-premises station and the temperature of the exhaust be blown
Outside air temperature: identical with the temperature of the suction air of off-premises station
In addition, cold wind temperature is the temperature that supposition is implemented in the processing factory of process FF.
Embodiment 3
To under 14 days (adding up to about 100 hours), identical watering condition, use 4 Water spray nozzles, the attachment state of scale when spraying RO process water (utilize the RO process water that obtains of the device identical with embodiment 2, electrical conductivity is 6-8 μ S/cm) and running water (running water in Tokyo) to the off-premises station (heat exchanger) of two like products is tested.Spray the result of RO process water, as shown in Figure 3, the attachment of scale can not be confirmed in fin surface.Spray the result of running water, as shown in Figure 4, the attachment of scale can be confirmed in fin surface.When spray running water, sprinkle water 14 days, just can confirm the attachment of scale, therefore, when summer continue sprinkle water, inappropriate remove disincrustant time, can infer that refrigerating efficiency easily reduces.
Embodiment 4
Utilize following test method and condition, implement the cooling means of heat exchanger of the present invention.
Use instrument (room air conditioner)
Indoor set: MSZ-J228-W (Mitsubishi Electric's (strain) system)
Off-premises station: MUZ-J228 (Mitsubishi Electric's (strain) system)
The specification of room air conditioner: single-phase 100V, 435V, 50-60Hz, regulation refrigerating capacity 2.2kW
Refrigerant piping length: 5m (indoor 2m, outside 3m)
Refrigerant category: R410A (total refrigerant amount: 0.75kg)
Operation mode: conventional operation mode (50Hz), design temperature 16 DEG C, air quantity: anxious, wind direction: fixing
Be arranged on that dry-bulb temperature is in the air of 29 ± 0.2 DEG C (wet-bulb temperature is 19 ± 0.2 DEG C) at indoor set, to be arranged on dry-bulb temperature be operate under state in the air of 46 ± 0.2 DEG C (wet-bulb temperature is 24 ± 0.2 DEG C) to off-premises station.
Carry out RO process water (electrical conductivity obtained with the device identical with embodiment 2 is the RO process water of 8 μ S/cm) to the heat exchanger of off-premises station to spray (spray amount is 40ml/min) 20 seconds, stop within 30 seconds, being one and circulate, repeat this circulation 1.5 hours, the mensuration of the project shown in the heat exchanger carrying out aforesaid operations and the heat exchanger not carrying out RO process water spray carry out tables 2.
Table 2
Efficiency of power dissipation=refrigerating capacity/power consumption
Embodiment 5
The method identical with embodiment 4 and condition is utilized to implement.Wherein, to the heat exchanger of off-premises station carry out RO process water spray (spray amount is 400ml/min) 20 seconds, stop within 60 seconds, be a circulation, repeat this circulation 1.5 hours.Result is as shown in table 3.
Table 3
Efficiency of power dissipation=refrigerating capacity/power consumption
Embodiment 6
In the bakery and confectionery in county of Shizuoka, in May, 2009-about 5 months periods in September implement the cooling means of heat exchanger of the present invention.As a result, consider that sunshine condition is identical, in the same day of 2009 and 2008,3 days that temperature condition is close, represent in table 4.
Factory site area: about 9600m
2
Air conditioner: off-premises station 80 (being arranged on the southwestern side of shop building)
The Emizu-3000 (treating capacity: 3000L/hr, electrical conductivity 6-8 μ S/cm) of RO treating apparatus and process water Daicen Membrane Systems Ltd.
Watering condition: 80 off-premises stations are divided into 2 series, to initial 40 waterings after 20 seconds, to remaining 40 waterings 20 seconds, as a circulation, repeats this circulation by each serial 40.
The watering time: (16 hours) in point in 6 points-afternoon 10 in the morning
The watering amount of each off-premises station: 0.8 liter/min (Water spray nozzle 2/platform)
Watering condition (according to outside air temperature, according to following variation)
1) 20 DEG C to less than 25 DEG C: sprinkle water 20 seconds, stop 60 seconds
2) 25 DEG C to less than 27 DEG C: sprinkle water 20 seconds, stop 50 seconds
3) 27 DEG C to less than 29 DEG C: sprinkle water 20 seconds, stop 40 seconds
4) 29 DEG C to less than 31 DEG C: sprinkle water 20 seconds, stop 30 seconds
5) more than 31 DEG C: sprinkle water 30 seconds, 30 seconds are stopped
Table 4
| On August 10th, 2008 | On August 10th, 2009 |
| The highest temperature (DEG C) | 29.0 | 28.0 |
| Temperature on average (DEG C) | 25.5 | 25.5 |
| Power consumption (kW/hr) | 8854 | 8540 |
| The reduced value (slip) of power consumption | - | 314kW/hr(3.5％) |
| On August 12nd, 2008 | On August 8th, 2009 | |
| The highest temperature (DEG C) | 31.1 | 30.9 |
| Temperature on average (DEG C) | 26.8 | 26.4 |
| Power consumption (kW/hr) | 9054 | 8704 |
| The reduced value (slip) of power consumption | - | 350kW/hr(3.9％) |
| On August 13rd, 2008 | On August 13rd, 2009 | |
| The highest temperature (DEG C) | 31.6 | 31.8 |
| Temperature on average (DEG C) | 27.3 | 27.0 |
| Power consumption (kW/hr) | 9301 | 8810 |
| The reduced value (slip) of power consumption | - | 491kW/hr(5.3％) |
Implement about after 5 months, for whole heat exchanger of 80 off-premises stations, observed by visual and both finger touch, but in whole off-premises stations, all can not confirm the attachment of scale.This fact shows, does not obviously need scale to remove process in force, even if after enforcement of the present invention terminates, also need not carry out scale removing process to heat exchanger completely, further, explanation can implement the present invention in next year (2010).When implementing the sprinkling running water of conventional art, must carry out 3,4 scale removing process 5 months periods or need to change the parts of heat exchanger, in contrast to this, the effect reducing operating cost is very large.
Claims (6)
1. the cooling means of a heat exchanger, this cooling means is when combining the thermantidote running having indoor set and off-premises station, the method that the heat exchanger had described off-premises station cools, wherein, the method comprises: running water, water for industrial use or well water are transported to reverse osmosis membrane processing device and carry out processing that to obtain electrical conductivity be after the process water of 4-10 μ S/cm, at least sprays described heat exchanger and is the process water of 4-10 μ S/cm by the electrical conductivity of reverse osmosis membrane processing device process and can not adheres to scale on described heat exchanger;
Wherein, the heat exchanger had off-premises station is sprinkled water with the periphery comprising the ground arranging off-premises station and reduces the temperature of off-premises station setting place entirety.
2. the cooling means of heat exchanger according to claim 1, wherein, the off-premises station of more than 10 is configured so that two row are above, sprinkles water and reduce the temperature of off-premises station setting place entirety to the periphery comprising the ground arranging whole off-premises stations.
3. the cooling means of heat exchanger according to claim 1, wherein, off-premises station arranges in the Water Sproading dish placed on the ground, except during by beginning to cool down heat exchanger watering, the water that accumulation watering produces in described Water Sproading dish.
4. the cooling means of heat exchanger according to claim 1, wherein, off-premises station arranges in the Water Sproading dish placed on the ground, heat exchanger is sprinkled water, reclaim a part of water be accumulated in Water Sproading dish, again processed by reverse osmosis membrane processing device, as the process water recycling of spraying.
5. the cooling means of heat exchanger according to claim 1, wherein, off-premises station is arranged on the roof of building, fetches water from the water source be arranged on roof to the former water for the process of reverse osmosis membrane processing device.
6. the cooling device of a heat exchanger, this cooling device is when combination has the running of the thermantidote of indoor set and off-premises station, for the device that the heat exchanger had described off-premises station cools, wherein, this device comprises: to running water, water for industrial use or well water carry out processing and obtain the reverse osmosis membrane processing device that electrical conductivity is the process water of 4-10 μ S/cm, described heat exchanger is sprayed and is the process water of 4-10 μ S/cm by the electrical conductivity of described reverse osmosis membrane processing device process and the watering unit of scale can not be adhered on described heat exchanger, and as required for configuring the Water Sproading dish of described off-premises station.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2009-280391 | 2009-12-10 | ||
| JP2009280391A JP5551927B2 (en) | 2008-12-11 | 2009-12-10 | Cooling method of heat exchanger |
| PCT/JP2010/058428 WO2011070807A1 (en) | 2009-12-10 | 2010-05-19 | Method for cooling heat exchanger |
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| CN102159898B true CN102159898B (en) | 2015-07-01 |
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| EP3464166A4 (en) * | 2016-05-27 | 2020-01-01 | Evapco, Inc. | Water-savings adiabatic spray system |
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|---|---|---|---|---|
| JPS55134234A (en) * | 1979-04-05 | 1980-10-18 | Toshiba Corp | Water cooled type air conditioner |
| JPS55134269A (en) * | 1979-04-05 | 1980-10-18 | Tokyo Shibaura Electric Co | Water cooling type air conditioner |
| JPS58104863U (en) * | 1982-01-11 | 1983-07-16 | 松下精工株式会社 | Heat pump air conditioner using solar air heat |
| CN2494822Y (en) * | 2001-07-31 | 2002-06-12 | 湖州四通环境科技有限公司 | Secondary reverse osmosis water purifier |
| JP2005147635A (en) * | 2003-11-20 | 2005-06-09 | Daikin Ind Ltd | Auxiliary cooling system, and auxiliary cooling method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423304B (en) * | 2007-10-31 | 2010-10-27 | 中国石油化工股份有限公司 | Glycol production waste water treatment method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134234A (en) * | 1979-04-05 | 1980-10-18 | Toshiba Corp | Water cooled type air conditioner |
| JPS55134269A (en) * | 1979-04-05 | 1980-10-18 | Tokyo Shibaura Electric Co | Water cooling type air conditioner |
| JPS58104863U (en) * | 1982-01-11 | 1983-07-16 | 松下精工株式会社 | Heat pump air conditioner using solar air heat |
| CN2494822Y (en) * | 2001-07-31 | 2002-06-12 | 湖州四通环境科技有限公司 | Secondary reverse osmosis water purifier |
| JP2005147635A (en) * | 2003-11-20 | 2005-06-09 | Daikin Ind Ltd | Auxiliary cooling system, and auxiliary cooling method |
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| CN102159898A (en) | 2011-08-17 |
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