CN100491850C - Underwater heat-exchanging system for large scale extraction of subsurface sea water cool capacity - Google Patents
Underwater heat-exchanging system for large scale extraction of subsurface sea water cool capacity Download PDFInfo
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- CN100491850C CN100491850C CNB200710047936XA CN200710047936A CN100491850C CN 100491850 C CN100491850 C CN 100491850C CN B200710047936X A CNB200710047936X A CN B200710047936XA CN 200710047936 A CN200710047936 A CN 200710047936A CN 100491850 C CN100491850 C CN 100491850C
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Abstract
This invention is a underwater heat exchanging system that extracts subsurface seawater cool capacity in large scale. It belongs to the field of ocean engineering technology. It includes incoming flow pipe, main water inlet pipe, main water outlet pipe, flexible pipe, backflow pipe, water pump, controlling device, thermometer, flowmeter, supporting structure and heating exchanging loop. Heat exchanging elements are arranged in the sea area need for cool capacity. Refrigerating water is transferred into the heat exchanging element through water transferring pipeline. The heat exchanging element is the loop composed of several valves and pipelines. After heat exchanging, the water is transferred back to supply the air conditioner system. This invention is simple, with tap water as refrigerating water. It greatly saves energy. It has great social and economic benefit.
Description
Technical field
The present invention relates to a kind of underwater heat-exchanging system, especially a kind of underwater heat-exchanging system of large scale extraction of subsurface sea water cool capacity belongs to field of ocean engineering.
Technical background
Subsurface sea water keeps lower temperature throughout the year in the world ocean, is a kind of good natural reproducible low-temperature receiver.The seawater of the coastal degree of depth of China between 10-800 rice, water saving spring and summer temperature is 12-20 ℃, and the part marine site is low to reach 6-12 ℃, and it is comparatively convenient that cold extracts, and can be used as the extensive low-temperature receiver of provincialism air-conditioning system.The for example deep layer in depression, Huanghai Sea middle part in summer and the Huanghai Cold Water Mass of bottom (about 70 meters), water temperature is 4.6-9.3 ℃; The mid-water temperature of South Sea less salt hypoxemia between 300-500 rice water layer is 6-11 ℃; The deep layer water temperature at the place, sea basin district below 1000 meters is minimum to reach 2.36 ℃, and does not have seasonal variations.East Sea Kuroshio mid-water degree of depth 400-800 rice, temperature 6-15 ℃.
In the prior art, application number is " the artificial affecting coastal cities disperse the seawater cited system of miniclimate " patent of invention of 200510024184.6, be to be after seawater between 0～400 meter extracts and sends into the seawater pretreating device and handles with the big marine degree of depth by the underground sea water pump, send into adiabatic seawater storehouse, deliver to each seawater to make heat exchange unit through the seawater force (forcing) pump, after treatment, enter the sea.This patent is direct extracting seawater refrigeration.Because subsurface sea water contains rich nutrient substances, after a large amount of the extraction, halobiontic living environment can be destroyed, and the seawater after the heat exchange is returned and enters the neritic area, also can produce very big influence to the marine environment of part.
For fear of the pollution of seawater and the corrosion of itself, when utilizing sea water cool capacity, John Andrepont is at " Integration of energy storage with seawater air conditioning (SWAC) systems " (The Proceedings of the Innovat ive Energy Systems Workshop.Honolulu, 2003,6-12) scheme that employing chilled water and seawater carry out land heat exchange is proposed in the literary composition, promptly the seawater of littoral certain depth is drawn on the bank heat exchange station, carry out returning after the heat exchange with the cooling water of freezing unit and enter marinely, freezing unit is united the mode of water cold-storage or ice cold-storage again and is carried out district cooling; Application number is " the ocean cooling running water is made the construction area air-conditioning system of refrigerant " patent of invention of 200610118891.6, be will through the Mare Frigoris water after rapid filter, flocculation basin, secondary rapid filter are handled in plate type heat exchanger with the running water heat exchange, utilize municipal original underground pipe network to be the running water conveyance conduit, make its performance water delivery, defeated cold dual-use function.This patent also is a kind of land heat exchange scheme.Because the central air-conditioning handpiece Water Chilling Units supplies, return water temperature is generally 7 ℃, 12 ℃.If adopt seawater low-temperature receiver and land heat exchange scheme, the Mare Frigoris coolant-temperature gage of extraction is 4-6 ℃, and its heat transfer temperature difference is little, heat exchange efficiency is low.
Summary of the invention
For defective and the deficiency that overcomes prior art, to utilize the cold of subsurface sea water on a large scale, and avoid a large amount of extracting seawater disembarkation heat exchange, reach low energy consumption, contamination-freely provide the purpose of cold for the urban area air-conditioning, the invention provides a kind of underwater heat-exchanging system of large scale extraction of subsurface sea water cool capacity.
The present invention is achieved through the following technical solutions.The present invention is provided with heat exchange unit in needing the sea area of cold, chilled water is sent into marine heat exchange unit by aqueduct, and wherein the heat-exchanging loop be made up of some valves and pipeline of heat exchange unit is transported to after the heat exchange and uses cool region.
The present invention includes: incoming flow pipe, water pump, control device, water inlet manifold, soft inlet pipe softly goes out pipe, total outlet pipe, return duct, A thermometer, A flowmeter, B thermometer, B flowmeter, supporting structure, A heat-exchanging loop, B heat-exchanging loop.Wherein the A heat-exchanging loop comprises the A1 valve, the A2 valve, and the A3 valve, the A4 valve, A5 valve and corresponding pipeline thereof, the B heat-exchanging loop comprises the B1 valve, B2 valve, B3 valve, B4 valve, B5 valve and corresponding pipeline thereof.Incoming flow pipe is connected with the import of water pump, and the outlet of water pump is connected with an end of water inlet manifold by the two ends pipe joint of soft inlet pipe, and the other end of water inlet manifold is respectively by the A heat-exchanging loop, and the B heat-exchanging loop is connected with an end of total outlet pipe.The other end of total outlet pipe by softly go out pipe, return duct is connected with city air-conditioning system pipe network.
The import of the A1 valve in the A heat-exchanging loop is connected with water inlet manifold, and the A1 valve outlet port is connected with the import of A2 valve, A4 valve respectively.The outlet of A2 valve is connected with the import of A3 valve, A5 valve respectively.The outlet of A3 valve is connected with the outlet of A4 valve with the A5 valve respectively, the outlet of A3 valve, A4 valve and A5 valve is connected with total outlet pipe, A flowmeter and A thermometer are installed on A heat-exchanging loop and the pipeline that total outlet pipe is connected, with chilled water flow velocity and the temperature that flows through in the measuring tube, and feed back to control device.The import of the B1 valve in the B heat-exchanging loop is connected with water inlet manifold, and the B1 valve outlet port is connected with the import of B2 valve, B4 valve respectively.The outlet of B2 valve is connected with the import of B3 valve, B5 valve respectively.The outlet of B3 valve is connected with the outlet of B4 valve with the B5 valve respectively, the outlet of B3 valve, B4 valve and B5 valve is connected with total outlet pipe, B flowmeter and B thermometer are installed on B heat-exchanging loop and the pipeline that total outlet pipe is connected, with chilled water flow velocity and the temperature that flows through in the measuring tube, and feed back to control device.
Soft inlet pipe and soft to go out pipe all be smooth flexible conduit is made by the polyvinyl chloride material.A heat-exchanging loop, B heat-exchanging loop all adopt the 10CrMoAl steel pipe manufacturing, and the pipeline external application is applied the WRF8401 topcoat with 40 micron thickness, to reach good anticorrosion and antifouling performance again with aluminium-plated coating and 40 microns WRF8406 seal coats of 150-200 micron thickness.The main material of WRF8406 is phosphate-based and iron oxide red; The main base-material of WRF8401 is an aluminium powder.Be placed in all the other pipelines under water, as water inlet manifold and total outlet pipe, all adopt the 300 series stainless steel tubing that contain chromium 18% to make, to guarantee to resist spot corrosion and crevice corrosion.
The underwater heat-exchanging loop is fixed under water by the heat exchange unit fixed structure.When the present invention adopted the seawater marine site of living in depth of water that is fit to temperature dark, the heat exchange unit fixed structure adopted the seabed supporting structure.When bottom sediment was softer, supporting structure adopted pile foundation structure; The harder marine site in the seabed, supporting structure adopts the gravity type foundation structure, and heat-exchanging loop is connected by pipe holder with supporting structure.When the present invention adopted the seawater marine site of living in depth of water that is fit to temperature more shallow, the heat exchange unit fixed structure adopted the floating drum suspended structure, and floating drum hangs by suspension line with heat-exchanging loop and is connected.
A1 valve, A2 valve, A3 valve, A4 valve, A5 valve and B1 valve, B2 valve, B3 valve, B4 valve, B5 valve all are electric check valves, are opened and closed by control device control.The output of control device electrically connects with A1 valve, A2 valve, A3 valve, A4 valve, A5 valve, B1 valve, B2 valve, B3 valve, B4 valve, B5 valve and water pump control end respectively, and the input of control device connects with the output feeder line of A thermometer, B thermometer, A flowmeter, B flowmeter respectively.When starting working, A1 valve and A4 valve are opened, and A2 valve, A3 valve and A5 valve are all closed.The normal-temperature water that reaches the running water standard with water quality is pressurizeed by water pump through incoming flow pipe as chilled water, enters A heat-exchanging loop by water inlet manifold through the A1 valve by soft inlet pipe.Chilled water flows into total outlet pipe through the A4 valve after absorbing sea water cool capacity.Before entering total outlet pipe, the A thermometer and of flowing through by thermometric.When water temperature did not meet the requirements of low temperature as yet, control device was opened A2 valve and A5 valve, and closes the A4 valve, made follow-up chilled water through A1 valve, A2 valve, A5 valve, flowed into total outlet pipe again, and the heat exchange path of chilled water prolongs, and has strengthened heat transfer effect.If the thermometric temperature value of A this moment does not meet the requirements of low temperature yet, control device is opened the A3 valve, closes the A5 valve, further prolongs the heat exchange path of chilled water, reduces the leaving water temperature of chilled water.The chilled water flow velocity that records when the A flowmeter reaches 0.2m/s when above, and control device is opened the B1 valve, and the B heat-exchanging loop is worked.The control in the heat exchange path of the chilled water of B heat-exchanging loop, identical with the control of A heat-exchanging loop.
A heat-exchanging loop and B heat-exchanging loop are the underwater heat-exchanging unit, and in order to make the required water pump merit consumes least of heat exchange, according to Optimal design and calculation, the caliber of A heat-exchanging loop and B heat-exchanging loop is an optimum value with 0.7 meter, and velocity in pipes is optimum value with 0.1m/s.Therefore, after A heat-exchanging loop and B heat-exchanging loop are all worked, when the velocity in pipes of chilled water still surpasses 0.2m/s, heat-exchanging loop and A heat-exchanging loop, the B heat-exchanging loop that more diameter then should be set be 0.7 meter in collectivity Scheme Design are in parallel, make chilled water that more shunting cooling circuit be arranged, they and A heat-exchanging loop, the collaborative work of B heat-exchanging loop make the flow velocity of chilled water when heat exchange reach optimum value as far as possible.Draw the chilled water of subsurface sea water cool capacity, via total outlet pipe with softly go out pipe and enter return duct, for the extensive air-conditioning system use in city.
Beneficial effect of the present invention: the present invention adopts running water as chilled water, does not need seawater is handled, and the line clogging phenomenon can not occur, is applicable to the sea area that salinity is higher.Can obviously improve the utilization rate of sea water cool capacity; Need not to extract a large amount of nutritious subsurface sea waters; Vegeto-animal living environment in the protection ocean; Economize on electricity more than 90% than conventional refrigeration system; Carry the chilled water of equivalent, can be energy-conservation by layout of the present invention and caliber flow velocity, improve heat exchange efficiency, the wasted work of sea water cool capacity extraction scheme only is 13% of a land sea water cool capacity extraction scheme under water.Deposits in Eastern Coastal China area population concentration, economically developed, consumes energy is many, the energy resource consumption proportion of building air conditioning is big especially, the underwater heat-exchanging system of large scale extraction of subsurface sea water cool capacity can utilize this good natural reproducible energy of Mare Frigoris water to provide cold for the urban area, significantly reduce power consumption, alleviate the urban distribution network burden.Have remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is the structural principle vertical view of system of the present invention.
Fig. 2 is the schematic side view that the heat exchange unit fixed structure adopts the seabed supporting structure.
Fig. 3 is the schematic side view that the heat exchange unit fixed structure adopts the floating drum suspended structure.
Among the figure: 1, incoming flow pipe, 2, water pump, 3, control device, 4, water inlet manifold, 5, soft inlet pipe, 6, the A1 valve, 7, A2 valve, 8, the A3 valve, 9, the A4 valve, 10, A5 valve, 11, the B1 valve, 12, the B2 valve, 13, B3 valve, 14, the B4 valve, 15, the B5 valve, 16, A thermometer, 17, the A flowmeter, 18, the B thermometer, 19, B flowmeter, 20, softly go out pipe, 21 total outlet pipes, 22, return duct, 23, pipe holder, 24, supporting structure, 25, suspension line, 26, floating drum, 27, the A heat-exchanging loop, 28, B heat-exchanging loop, 29, seashore, 30, sea bed.
The specific embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
As Fig. 1, Fig. 2, shown in Figure 3, the present invention includes: incoming flow pipe 1, water pump 2, control device 3, water inlet manifold 4, soft inlet pipe 5, A thermometer 16, A flowmeter 17, B thermometer 18, B flowmeter 19 softly goes out pipe 20, total outlet pipe 21, return duct 22, supporting structure 24, A heat-exchanging loop 27, B heat-exchanging loop 28.Wherein A heat-exchanging loop 27 comprises A1 valve 6, A2 valve 7, and A3 valve 8, A4 valve 9, A5 valve 10 and corresponding pipeline thereof, B heat-exchanging loop 28 comprises B1 valve 11, B2 valve 12, B3 valve 13, B4 valve 14, B5 valve 15 and corresponding pipeline thereof.Incoming flow pipe 1 is connected with the import of water pump 2, and the outlet of water pump 2 is connected with water inlet manifold 4 one ends by the two ends pipe joint of soft inlet pipe 5, and water inlet manifold 4 other ends are respectively by A heat-exchanging loop 27, and B heat-exchanging loop 28 is connected with an end of total outlet pipe 21.Total outlet pipe 21 other ends by soft two pipe joints that go out pipe 20 be connected with city air-conditioning system pipe network again after return duct 22 reliably is connected.
The import of the A1 valve 6 in the A heat-exchanging loop 27 is connected with water inlet manifold 4, and the outlet of A1 valve 6 is connected with the import of A2 valve 7, A4 valve 9 respectively.The outlet of A2 valve 7 is connected with the import of A3 valve 8, A5 valve 10 respectively.The outlet of A3 valve 8 is connected with the outlet of A4 valve 9 with A5 valve 10 respectively, the outlet of A3 valve 8, A4 valve 9 and A5 valve 10 is connected with total outlet pipe 21, A flowmeter 17 and A thermometer 16 are installed on A heat-exchanging loop 27 and the pipeline that total outlet pipe 21 is connected, with the flow velocity and the temperature of the chilled water that flows through in the measuring tube, and feed back to control device 3.The import of the B1 valve 11 in the B heat-exchanging loop 28 is connected with water inlet manifold 4, and the outlet of B1 valve 11 is connected with the import of B2 valve 12, B4 valve 14 respectively.The outlet of B2 valve 12 is connected with the import of B3 valve 13, B5 valve 15 respectively.The outlet of B3 valve 13 is connected with the outlet of B4 valve 14 with B5 valve 15 respectively, the outlet of B3 valve 13, B4 valve 14 and B5 valve 15 is connected with total outlet pipe 21, B flowmeter 19 and B thermometer 18 are installed on B heat-exchanging loop 28 and the pipeline that total outlet pipe 21 is connected, with the flow velocity and the temperature of the chilled water that flows through in the measuring tube, and feed back to control device 3.
A heat-exchanging loop 27, B heat-exchanging loop 28 all are fixed under water by the heat exchange unit fixed structure.When the present invention adopted the seawater marine site of living in depth of water that is fit to temperature dark, the heat exchange unit fixed structure adopted seabed supporting structure 24.When bottom sediment was softer, supporting structure 24 adopted pile foundation structure; The harder marine site in the seabed, supporting structure 24 adopts the gravity type foundation structures, and supporting structure 24 is connected by pipe holder 23 with A heat-exchanging loop 27, B heat-exchanging loop 28.When the present invention adopted the seawater marine site of living in depth of water that is fit to temperature more shallow, the heat exchange unit fixed structure adopted the floating drum suspended structure, and floating drum 26 hangs with suspension line 25 with A heat-exchanging loop 27, B heat-exchanging loop 28 and is connected.
A1 valve 6, A2 valve 7, A3 valve 8, A4 valve 9, A5 valve 10 and B1 valve 11, B2 valve 12, B3 valve 13, B4 valve 14, B5 valve 15 all are the electric check valves that is applicable to seawater, are opened and closed by control device 3 controls.The output of control device 3 electrically connects with the control end of A1 valve 6, A2 valve 7, A3 valve 8, A4 valve 9, A5 valve 10, B1 valve 11, B2 valve 12, B3 valve 13, B4 valve 14, B5 valve 15 and water pump 2 respectively, and the input of control device 3 connects with the output feeder line of A thermometer 16, B thermometer 18, A flowmeter 17, B flowmeter 19 respectively.
When starting working, A1 valve 6 is opened with A4 valve 9, and A2 valve 7, A3 valve 8 are all closed with A5 valve 10.The normal-temperature water that reaches the running water standard with water quality by water pump 2 pressurizations, enters A heat-exchanging loop 27 by water inlet manifold 4 through A1 valve 6 by soft inlet pipe 5 through incoming flow pipe 1 as chilled water.After chilled water absorbs sea water cool capacity, flow into total outlet pipe 21 through A4 valve 9.Before entering total outlet pipe 21, the A thermometer 16 and of flowing through by thermometric.When water temperature did not meet the requirements of low temperature as yet, control device 3 opened A2 valve 7 and A5 valve 10 and cuts out A4 valve 9, made follow-up chilled water through A1 valve 6, A2 valve 7, A5 valve 10, flowed into total outlet pipe 21 again, and the heat exchange path of chilled water prolongs, and has strengthened heat transfer effect.If the temperature value that this moment, A thermometer 16 recorded does not meet the requirements of low temperature yet, control device 3 is opened A3 valve 8, closes A5 valve 10, further prolongs the heat exchange path of chilled water, reduces the leaving water temperature of chilled water.The chilled water flow velocity that records when A flowmeter 17 reaches 0.2m/s when above, and control device 3 is opened B1 valve 11, and B heat-exchanging loop 28 is worked.The control in the heat exchange path of the chilled water of B heat-exchanging loop 28, identical with 27 controls of A heat-exchanging loop.
A heat-exchanging loop 27 and B heat-exchanging loop 28 are underwater heat-exchanging unit, and in order to make the required water pump merit consumes least of heat exchange, according to Optimal design and calculation, the caliber of A heat-exchanging loop 27 and B heat-exchanging loop 28 is 0.7 ± 0.1 meter, and velocity in pipes is 0.1 ± 0.05m/s.If, after A heat-exchanging loop 27 and B heat-exchanging loop 28 are all worked, when the velocity in pipes of chilled water still surpasses 0.2m/s, heat-exchanging loop and A heat-exchanging loop 27, the B heat-exchanging loop 28 that more diameter then should be set be 0.7 ± 0.1 meter in collectivity Scheme Design are in parallel, make chilled water that more shunting cooling circuit be arranged, they and A heat-exchanging loop 27,28 collaborative works of B heat-exchanging loop make the flow velocity of chilled water when heat exchange reach optimum value as far as possible.Draw the chilled water of subsurface sea water cool capacity, enter return duct 22, use for the extensive air-conditioning system in city via total outlet pipe 21 and soft outlet pipe 20.
Claims (5)
1, a kind of underwater heat-exchanging system of large scale extraction of subsurface sea water cool capacity, comprise: incoming flow pipe (1), water pump (2), control device (3), water inlet manifold (4), soft inlet pipe (5), A thermometer (16), A flowmeter (17), B thermometer (18), B flowmeter (19), softly go out pipe (20), total outlet pipe (21), return duct (22), A heat-exchanging loop (27), B heat-exchanging loop (28), wherein A heat-exchanging loop (27) comprises A1 valve (6), A2 valve (7), A3 valve (8), A4 valve (9), A5 valve (10) and corresponding pipeline thereof, B heat-exchanging loop (28) comprises B1 valve (11), B2 valve (12), B3 valve (13), B4 valve (14), B5 valve (15) and corresponding pipeline thereof, it is characterized in that: A heat-exchanging loop (27) and B heat-exchanging loop (28) place under water, and fix by the heat exchange unit fixed structure; Incoming flow pipe (1) is connected with the import of water pump (2), the outlet of water pump (2) is connected with water inlet manifold (4) one ends by the two ends pipe joint of soft inlet pipe (5), water inlet manifold (4) other end is respectively by A heat-exchanging loop (27), B heat-exchanging loop (28) is connected with an end of total outlet pipe (21), and the other end of total outlet pipe (21) reliably is connected with return duct (22) by soft two pipe joints that go out to manage (20); The import of the A1 valve (6) in the A heat-exchanging loop (27) is connected with water inlet manifold (4), the outlet of A1 valve (6) is connected with the import of A2 valve (7), A4 valve (9) respectively, the outlet of A2 valve (7) is connected with the import of A3 valve (8), A5 valve (10) respectively, the outlet of A3 valve (8) is connected with the outlet of A4 valve (9) with A5 valve (10) respectively, the outlet of A3 valve (8), A4 valve (9) and A5 valve (10) is connected with total outlet pipe (21), and A flowmeter (17) and A thermometer (16) are installed on A heat-exchanging loop (27) and the pipeline that always outlet pipe (21) is connected; The import of the B1 valve (11) in the B heat-exchanging loop (28) is connected with water inlet manifold (4), the outlet of B1 valve (11) is connected with the import of B2 valve (12), B4 valve (14) respectively, the outlet of B2 valve (12) is connected with the import of B3 valve (13), B5 valve (15) respectively, the outlet of B3 valve (13) is connected with the outlet of B4 valve (14) with B5 valve (15) respectively, the outlet of B3 valve (13), B4 valve (14) and B5 valve (15) is connected with total outlet pipe (21), and B flowmeter (19) and B thermometer (18) are installed on B heat-exchanging loop (28) and the pipeline that always outlet pipe (21) is connected; The output of control device (3) electrically connects with the control end of A1 valve (6), A2 valve (7), A3 valve (8), A4 valve (9), A5 valve (10), B1 valve (11), B2 valve (12), B3 valve (13), B4 valve (14), B5 valve (15) and water pump (2) respectively, and the input of control device (3) connects with the output feeder line of A thermometer (16), B thermometer (18), A flowmeter (17), B flowmeter (19) respectively; Soft inlet pipe (5) and soft to go out pipe (20) all be smooth flexible conduit is made by the polyvinyl chloride material; The pipeline of A heat-exchanging loop (27) and B heat-exchanging loop (28) all adopts the 10CrMoAl steel pipe manufacturing, caliber is 0.7 ± 0.1 meter, the pipeline external application is applied the WRF8401 topcoat with 40 micron thickness again with aluminium-plated coating and 40 microns WRF8406 seal coats of 150-200 micron thickness; In A heat-exchanging loop (27) and the B heat-exchanging loop (28), the chilled water design current velocity is 0.1 ± 0.05m/s.
2, the underwater heat-exchanging system of a kind of large scale extraction of subsurface sea water cool capacity according to claim 1, the main material that it is characterized in that described WRF8406 seal coat is phosphate and iron oxide red; The main base-material of WRF8401 topcoat is an aluminium powder.
3, the underwater heat-exchanging system of a kind of large scale extraction of subsurface sea water cool capacity according to claim 1 is characterized in that described water inlet manifold (4) and total outlet pipe (21) all adopt the 300 series stainless steel tubing that contain chromium 18% to make.
4, the underwater heat-exchanging system of a kind of large scale extraction of subsurface sea water cool capacity according to claim 1 is characterized in that described heat exchange unit fixed structure is the suspended structure that adopts seabed supporting structure (24) or floating drum (26) and suspension line (25).
5,, it is characterized in that described supporting structure (24) is to adopt pile foundation structure or gravity type foundation structure according to the underwater heat-exchanging system of claim 1 and the described a kind of large scale extraction of subsurface sea water cool capacity of claim 4.
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| CNB200710047936XA CN100491850C (en) | 2007-11-08 | 2007-11-08 | Underwater heat-exchanging system for large scale extraction of subsurface sea water cool capacity |
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| CNB200710047936XA CN100491850C (en) | 2007-11-08 | 2007-11-08 | Underwater heat-exchanging system for large scale extraction of subsurface sea water cool capacity |
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| CN105240970B (en) * | 2015-10-14 | 2018-05-11 | 中国海洋大学 | A kind of ocean chilled water central cooling system and central cooling method with auxiliary cold source |
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