CN104456789B - Switching device of cooling water supply system of main ventilation air conditioner of underground powerhouse - Google Patents
Switching device of cooling water supply system of main ventilation air conditioner of underground powerhouse Download PDFInfo
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- CN104456789B CN104456789B CN201410643935.1A CN201410643935A CN104456789B CN 104456789 B CN104456789 B CN 104456789B CN 201410643935 A CN201410643935 A CN 201410643935A CN 104456789 B CN104456789 B CN 104456789B
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- 239000000498 cooling water Substances 0.000 title claims abstract description 135
- 238000009423 ventilation Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 162
- 238000005057 refrigeration Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 238000004378 air conditioning Methods 0.000 claims description 49
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 41
- 230000005520 electrodynamics Effects 0.000 claims description 20
- 239000003657 drainage water Substances 0.000 claims description 17
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 14
- 238000004134 energy conservation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 abstract description 2
- 239000008400 supply water Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 241000255777 Lepidoptera Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- 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
- F24F5/0003—Exclusively-fluid systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a switching device of a cooling water supply system of a main ventilation air conditioner of an underground powerhouse. The switching device is installed in the cooling water supply system of the air conditioner. An original main ventilation air conditioner unit comprises a water chilling unit, an air handler and four main pipelines of a cooling water supply system of the air conditioner. According to the switching device, two manual butterfly valves are additionally arranged in the original cooling water supply system of the air conditioner, and then switching between a common mode and an energy-saving mode of the cooling water supply system of the air conditioner can be achieved. After switching is conducted on the cooling water supply system of the air conditioner, when the cooling water supply system of the air conditioner operates in the energy-saving mode, the water chilling unit stops operating, constant-low-temperature water in a lower storage reservoir of a power station is directly used by the air handler as a refrigerant to take part in refrigeration. The switching device is simple in structure, switching operation is convenient, the water chilling unit can be effectively prevented from operating abnormally for a long time by the adoption of the energy-saving mode, equipment is protected, electricity consumption of the equipment is reduced, and damage to the equipment is reduced.
Description
Technical field
The present invention relates to a kind of switching device of underground power house main ventilation air conditioning cooling water water system, specifically relates to
And one kind is in underground power house main ventilation air conditioning cooling water water system, by installing simple switching device and carrying out simple
Handover operation, for realizing that air conditioning system is normally run, had both protected equipment, and can reach the effect of energy saving again.
Background technology
The underground power house main ventilation of many hydroenergy storage stations (hereinafter referred to as " power station ") is air conditioning unit at present is equipped with spiral shell
Bar pump type handpiece Water Chilling Units, combined air processing, cooling water system, freezing water-pressurization system etc..
The main air conditioning system ultimate principle of Hydropower Station Underground is：Chilled water with the output of screw pump handpiece Water Chilling Units is as refrigeration
Agent, realizes lowering the temperature Factory Building to each region transporting cold wind of Factory Building after combined formula air-treatment mechanism cold, the chilled water after refrigeration
Jing pressure charging systems return to handpiece Water Chilling Units and carry out cooling treatment again, become again refrigerant cycle utilization.
Due to the design normal running (operation) conditions and actual rings of the main air conditioning system screw pump handpiece Water Chilling Units of Hydropower Station Underground
Border deviation is larger, and normally startup requires cooling water temperature higher than 20 DEG C to handpiece Water Chilling Units, and is used to freeze Jing after handpiece Water Chilling Units process
About 7 DEG C of chilled water water temperature, but the actual cooling water in many power stations takes from the deep water of power station lower storage reservoir, about 9 DEG C, throughout the year perseverance
Temperature, water supply water temperature are far below handpiece Water Chilling Units design requirement, cause handpiece Water Chilling Units normally cannot run, and the past is always by taking people
To intervene, manually adjusting the means such as cooling water inflow, start handpiece Water Chilling Units operation refrigeration.As handpiece Water Chilling Units cannot be transported automatically
OK, and operating condition is poor, operational efficiency is low, and unit fault rate is higher, and long-term damage operation accelerates handpiece Water Chilling Units
It is aging.For this reason, it may be necessary to thoroughly solve the long-standing problem of underground power house main ventilation air conditioning system.
The content of the invention
The invention aims to thoroughly solve the problems, such as underground power house main ventilation air conditioning system, and provide a kind of
It is simple structure, easy to operate, but can the good underground power house main ventilation air conditioning cooling water of protection equipment and energy-conservation, using effect supply water
The switching device of system.
For achieving the above object, the technical solution used in the present invention is：A kind of underground power house main ventilation air-conditioning cooling is provided
The switching device of water supply system, in system underground power house main ventilation it is air conditioning unit by a screw pump handpiece Water Chilling Units, one
Four main lines of combined air processing and air conditioning cooling water water system are constituted, and four main lines are：Cooling water
House steward, cooling water drainage supply mains, air processing machine chilled water water inlet manifold and chilled water return main；Four described main lines
In be provided only with four shock-absorbing connections, four thermometer copper sleeves, handpiece Water Chilling Units chilled water outlet butterfly valve, a handpiece Water Chilling Units
Chilled water backwater electrodynamic valve, cooling water draining butterfly valve, chilled water backwater electromagnetic remote controlled valve, a chilled water supercharging
Pump, air processing machine exit butterfly valve, electric water treatment device service valve A, electric water treatment device, an electronic water
Processing instrument service valve B, cooling water pump, cooling water electromagnetic remote controlled valve, a cooling water electrodynamic valve
With two drainage for overhaul valves；Switching device is installed in described air conditioning cooling water water system, switching device is by a company
Adapter A, connecting tube B, a water strainer, a feed pipe connection valve and a return pipe and cooling water drainage water pipe junction valve
Composition；Described water strainer is arranged on cooling water house steward above and is located at cooling water electrodynamic valve and cooling water electromagnetism
Between remote-controlled valve, described connection is installed between the cooling water house steward of air-conditioning and air processing machine chilled water water inlet manifold additional
Pipe A one end connects a water strainer, and the handpiece Water Chilling Units chilled water on other end connection air processing machine chilled water water inlet manifold goes out
Mouth butterfly valve, is provided with feed pipe connection valve in connecting tube A, connecting tube A substitutes screw pump cooling-water machine with natural permanent water at low temperature
The chilled water that group is produced, is directly used in refrigeration in being sent to air processing machine；Simultaneously in chilled water return main and cooling water draining
Handpiece Water Chilling Units chilled water backwater electrodynamic valve in the connecting tube B one end connection chilled water return main installed additional between house steward,
Cooling water draining butterfly valve in other end connection cooling water drainage supply mains, is provided with return pipe and cooling water draining in connecting tube B
Pipe connection valve, connecting tube B discharge air conditioning pipe system by the cooling water after refrigeration is participated in；
Feed pipe connection valve and return pipe in the switching device is Hand-operated butterfly valve with cooling water drainage water pipe junction valve,
One water strainer precision 0.8mm of the installation, crushing<0.03MPa, for ensureing that cooling water water quality meets air-treatment
Machine service requirement；
Described switching device for by air conditioning cooling water water system in " common " mode of operation and " energy-conservation " Working mould
Switch between formula；When the lower storage reservoir perseverance low temperature coolant-temperature gage into cooling water house steward and handpiece Water Chilling Units demarcate the chilled water of output
When water temperature is more or less the same, air conditioning cooling water water system using " energy-conservation " pattern, its method is：Handpiece Water Chilling Units chilled water is closed first
Exit butterfly valve, handpiece Water Chilling Units chilled water backwater electrodynamic valve, cooling water draining butterfly valve and cooling water electrodynamic valve, close cooling-water machine
Group；The feed pipe connection valve and return pipe and cooling water drainage water pipe junction valve in switching device is opened simultaneously, makes the perseverance of lower storage reservoir
Water at low temperature is entered from cooling water house steward, Jing electric water treatment devices, cooling water pump, cooling water electromagnetic remote controlled
Valve, water strainer and feed pipe connection valve are directly sent in air processing machine, participate in freezing as cryogen；Through air processing machine
The cooling water Jing air processing machine exit butterfly valves that flow out after process, chilled water booster pump, chilled water backwater electromagnetic remote controlled valve and return
Water pipe enters cooling water drainage supply mains with cooling water drainage water pipe junction valve, and the cooling water participated in after refrigeration is expelled directly out air-conditioner pipe
Road system；
When in particular cases needing to recover handpiece Water Chilling Units operation, by closing air conditioning cooling water water system switching device
In feed pipe connection valve and return pipe and cooling water drainage water pipe junction valve, switch back into described air conditioning cooling water water system
To " common " pattern, using original design handpiece Water Chilling Units, air processing machine and air conditioning cooling water water system.
The switching device of the underground power house main ventilation air conditioning cooling water water system of the present invention has advantages below：
(1) the switching device structure of the underground power house main ventilation air conditioning cooling water water system that the present invention is provided is very simple
It is single, it is only necessary to two sections of connecting tubes to be installed in the pipeline of former air conditioning cooling water water system, and one is installed in every section of connecting tube
Individual manual connection valve, so that it may realize switching of the air conditioning cooling water water system between " common " and " energy-conservation " pattern.
(2) using the switching device of the present invention, air conditioning system handpiece Water Chilling Units under " energy-conservation " mode of operation are not involved in operation,
Handpiece Water Chilling Units operation power consumption can be significantly saved not only, moreover it is possible to be prevented effectively from handpiece Water Chilling Units and caused in improper environmental work
Device damage.
Description of the drawings
Fig. 1 is a kind of switching device structural representation of underground power house main ventilation air conditioning cooling water water system of the invention.
Fig. 2 is structure schematic diagram of the present invention using the main ventilation air conditioning cooling water water system after switching device.
In above-mentioned figure：1- handpiece Water Chilling Units, 2- shock-absorbing connections, 3- thermometer copper sleeves, 4- handpiece Water Chilling Units chilled water outlet butterflies
Valve, 5- handpiece Water Chilling Units chilled water backwater electrodynamic valves, 6- cooling water draining butterfly valves, 7- air processing machine chilled water water inlet manifolds, 8-
Chilled water return main, 9- cooling water drainage supply mains, 10- chilled water backwater electromagnetic remote controlled valves, 11- chilled water booster pumps, 12- are empty
Gas disposal machine exit butterfly valve, 13- air processing machines, 14- cooling water house stewards, 15- electric water treatment device service valve A, 16- are electric
Sub- water treatment facilities, 17- electric water treatment device service valve B, 18- cooling water pumps, 19- cooling water electromagnetic remote controlled valves, 20-
Connecting tube B, 21- return pipe and cooling water drainage water pipe junction valve, 22- water strainers, 23- connecting tube A, 24- feed pipe connection valves,
25- cooling water electrodynamic valves, 26- drainage for overhaul valves.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：A kind of switching device of underground power house main ventilation air conditioning cooling water water system that the present invention is provided, its
Structure is as shown in figure 1, switching device is arranged in air conditioning cooling water water system, referring to dotted box portion in Fig. 1.It is air conditioning unit
It is made up of 1, combined air processing 13 of a screw pump handpiece Water Chilling Units and four main lines of cooling water system,
Four main line is respectively：Cooling water house steward 14, air processing machine chilled water water inlet manifold 7,8 and of chilled water return main
Cooling water drainage supply mains 9；Described switching device is to enter with air processing machine chilled water in the cooling water house steward 14 of air-conditioning
Install connecting tube A 23 between supply mains 7 additional, connecting tube A one end connects a water strainer 22, and other end connection air processing machine is cold
The handpiece Water Chilling Units chilled water outlet butterfly valve 4 frozen on water water inlet manifold, is provided with a feed pipe connection valve 24 in connecting tube A, even
Adapter A substitutes the chilled water that screw pump handpiece Water Chilling Units are produced with natural permanent water at low temperature, directly uses in being sent to air processing machine
In refrigeration；Install connecting tube B 20, connecting tube B mono- between chilled water return main 8 and cooling water drainage supply mains 9 additional simultaneously
End connects the handpiece Water Chilling Units chilled water backwater electrodynamic valve 5 in chilled water return main 8, other end connection cooling water drainage supply mains 9
In cooling water draining butterfly valve 6, return pipe and cooling water drainage water pipe junction valve 21 are installed in connecting tube B 20.
The feed pipe connection valve 24 and return pipe in switching device is handss with cooling water drainage water pipe junction valve 21
Dynamic butterfly valve, the present invention are additionally arranged a water strainer 22, precision in 24 leading portion of feed pipe connection valve for the water quality for ensureing to supply water
0.8mm, crushing<0.03MPa, for ensureing that cooling water quality meets combination type air processor service requirement.
Embodiment 2：It is air conditioning unit in " common " MODE of operation, 24 He of feed pipe connection valve of switching device in the present invention
Return pipe is closed mode with cooling water drainage water pipe junction valve 21.Air conditioning unit to work by original design pattern, handpiece Water Chilling Units are each
The shock-absorbing connection 2 of damping is provided with pipeline, totally four shock-absorbing connections and by the thermometer in four thermometer copper sleeves 3
Observation water temperature, a handpiece Water Chilling Units chilled water outlet butterfly valve 4, handpiece Water Chilling Units chilled water backwater electrodynamic valve, 5, cooling water
6,10, one, chilled water backwater electromagnetic remote controlled valve chilled water booster pump 11, air processing machine of draining butterfly valve exports butterfly
12, electric water treatment device service valve A15 of valve, 16, electric water treatment device service valve B17 of an electric water treatment device,
One 19, one, cooling water electromagnetic remote controlled valve cooling water electrodynamic valve 25 of cooling water pump 18, and two inspections
Repair drain valve 26.Chilled water outlet butterfly valve 4, the handpiece Water Chilling Units chilled water backwater that handpiece Water Chilling Units are opened when starting handpiece Water Chilling Units is electronic
Valve 5, cooling water draining butterfly valve 6 and cooling water electrodynamic valve 25, handpiece Water Chilling Units 1 put into operation；Air processing machine 13 leans on cold water
The chilled water of the output of unit 1 is realized to each region transporting cold wind of underground power house after air-treatment mechanism cold as cold-producing medium
Factory Building is lowered the temperature.
Due to 9 DEG C of the long-term constant temperature of power station lower storage reservoir deep water, the water temperature demarcates the 7 of output with screw pump handpiece Water Chilling Units 1
DEG C chilled water water temperature is more or less the same, therefore a kind of underground power house main ventilation air-conditioning cooling that can be provided using the embodiment of the present invention 1
The switching device of water supply system, by air conditioning cooling water water system from " common " pattern switching to " energy-conservation " pattern, in " section
Under energy " pattern, handpiece Water Chilling Units 1 are out of service.The method of switching is：Handpiece Water Chilling Units chilled water outlet butterfly valve 4, freezing are closed directly
Water backwater electrodynamic valve 5, cooling water draining butterfly valve 6 and cooling water electrodynamic valve 25, simultaneously close off handpiece Water Chilling Units 1；Open and supply water
Pipe connection valve 24 and return pipe and cooling water drainage water pipe junction valve 21, start air processing machine 13；Referring to Fig. 2, power station lower storage reservoir
Permanent water at low temperature enter from cooling water house steward 14, through electric water treatment device service valve A15, electric water treatment device 16,
Electric water treatment device service valve B17, cooling water pump 18, cooling water electromagnetic remote controlled valve 19, water strainer 22, connecting tube
A23, feed pipe connection valve 24, chilled water water inlet manifold 7 are sent to Jing heat exchange process in air processing machine 13, each to underground power house
Region transporting cold wind；Cooling water Jing air processing machines exit butterfly valve 12, chilled water booster pump 11, chilled water backwater electricity after refrigeration
Magnetic remote-controlled valve 10, connecting tube B20 and return pipe and cooling water drainage water pipe junction valve 21, cooling water drainage supply mains 9 discharge air-conditioner pipe
Road system.
Underground power house ventilation and air conditioning system adopts " energy-conservation " mode operation, refrigeration to be entirely capable of under normal circumstances in power station
Enough to meet design and field requirement, each region refrigeration refers to following table：
| Pattern | Busbar laminate | Water dispenser layer | Gallery layer | Ball valve chamber | Draft tube gate chamber |
| " common " model temperature | 22℃ | 22℃ | 18℃ | 18℃ | 22℃ |
| " energy-conservation " model temperature | 22℃ | 23℃ | 21℃ | 19℃ | 22℃ |
Using " energy-conservation " pattern work year after next can about 460,000 kwh of using electricity wisely, greatly save operating cost, obtain preferable
Energy-saving potentiation effect, while reducing the workload of Worm type water-cooled unit O＆M.
Claims (1)
1. a kind of switching device of underground power house main ventilation air conditioning cooling water water system, underground power house main ventilation air-conditioning in system
Unit is responsible for by four of a screw pump handpiece Water Chilling Units, a combined air processing and air conditioning cooling water water system
Road constitutes, and four main lines are：Cooling water house steward, cooling water drainage supply mains, air processing machine chilled water water inlet manifold and
Chilled water return main；Four shock-absorbing connections, four thermometer copper sleeves, a cold water are provided only with four described main lines
Unit chilled water outlet butterfly valve, handpiece Water Chilling Units chilled water backwater electrodynamic valve, cooling water draining butterfly valve, a chilled water
Backwater electromagnetic remote controlled valve, chilled water booster pump, air processing machine exit butterfly valve, an electric water treatment device service valve
A, electric water treatment device, electric water treatment device service valve B, cooling water pump, a cooling water electricity
Magnetic remote-controlled valve, a cooling water electrodynamic valve and two drainage for overhaul valves；It is characterized in that：Supply in described air conditioning cooling water
Switching device is installed in water system, switching device is by connecting tube A, connecting tube B, water strainer, a water supply
Pipe connection valve and a return pipe are constituted with cooling water drainage water pipe junction valve；Described water strainer is arranged on cooling water house steward
Above and positioned between cooling water electrodynamic valve and cooling water electromagnetic remote controlled valve, in cooling water house steward and the sky of air-conditioning
Install described connecting tube A one end connection water strainer, other end connection air-treatment between gas disposal machine chilled water water inlet manifold additional
Handpiece Water Chilling Units chilled water outlet butterfly valve on machine chilled water water inlet manifold, is provided with feed pipe connection valve, connecting tube in connecting tube A
A substitutes the chilled water that screw pump handpiece Water Chilling Units are produced with natural permanent water at low temperature, and system is directly used in being sent to air processing machine
It is cold；The connecting tube B one end connection chilled water for installing additional between chilled water return main and cooling water drainage supply mains simultaneously is returned
Handpiece Water Chilling Units chilled water backwater electrodynamic valve in supply mains, the cooling water draining butterfly in other end connection cooling water drainage supply mains
Valve, is provided with return pipe and cooling water drainage water pipe junction valve in connecting tube B, connecting tube B is discharged the cooling water after refrigeration is participated in
Air conditioning pipe system；
Feed pipe connection valve and return pipe in the switching device is Hand-operated butterfly valve with cooling water drainage water pipe junction valve, described
Water strainer precision 0.8mm installed, crushing<0.03MPa, for ensureing that cooling water water quality meets air processing machine fortune
Row is required；
Described switching device for by air conditioning cooling water water system " common " mode of operation and " energy-conservation " mode of operation it
Between switch；When the lower storage reservoir perseverance low temperature coolant-temperature gage into cooling water house steward and handpiece Water Chilling Units demarcate the chilled water water temperature of output
When being more or less the same, air conditioning cooling water water system using " energy-conservation " pattern, its method is：Handpiece Water Chilling Units chilled water outlet is closed first
Butterfly valve, handpiece Water Chilling Units chilled water backwater electrodynamic valve, cooling water draining butterfly valve and cooling water electrodynamic valve, close handpiece Water Chilling Units；
The feed pipe connection valve and return pipe and cooling water drainage water pipe junction valve in switching device is opened simultaneously, makes the permanent low temperature of lower storage reservoir
Water is entered from cooling water house steward, Jing electric water treatment devices, cooling water pump, cooling water electromagnetic remote controlled valve, filter
Hydrophone and feed pipe connection valve are directly sent in air processing machine, participate in freezing as cryogen；Through air processing machine process
Cooling water Jing air processing machine exit butterfly valves, chilled water booster pump, chilled water backwater electromagnetic remote controlled valve and the return pipe for flowing out afterwards
Cooling water drainage supply mains is entered with cooling water drainage water pipe junction valve, the cooling water participated in after refrigeration is expelled directly out into air-conditioning duct system
System；
When in particular cases needing to recover handpiece Water Chilling Units operation, by closing in air conditioning cooling water water system switching device
Feed pipe connection valve and return pipe and cooling water drainage water pipe junction valve, switch back to described air conditioning cooling water water system
" common " pattern, using original design handpiece Water Chilling Units, air processing machine and air conditioning cooling water water system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410643935.1A CN104456789B (en) | 2014-11-11 | 2014-11-11 | Switching device of cooling water supply system of main ventilation air conditioner of underground powerhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410643935.1A CN104456789B (en) | 2014-11-11 | 2014-11-11 | Switching device of cooling water supply system of main ventilation air conditioner of underground powerhouse |
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| CN104456789A CN104456789A (en) | 2015-03-25 |
| CN104456789B true CN104456789B (en) | 2017-05-03 |
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| CN201410643935.1A Active CN104456789B (en) | 2014-11-11 | 2014-11-11 | Switching device of cooling water supply system of main ventilation air conditioner of underground powerhouse |
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| CN109458707A (en) * | 2018-10-10 | 2019-03-12 | 彩虹（合肥）液晶玻璃有限公司 | HVAC system and HVAC energy saving of system method |
| CN111206958B (en) * | 2020-03-18 | 2021-01-26 | 武汉大学 | Drainage and cooling system and method in long-distance deep-buried tunnel TBM tunneling construction |
| CN113338386B (en) * | 2021-06-10 | 2022-11-01 | 中国电建集团昆明勘测设计研究院有限公司 | Multi-element utilization development method for renewable reservoir low-temperature water |
| CN113639348A (en) * | 2021-07-30 | 2021-11-12 | 北京宝川科技有限公司 | Chilled water circulating system is introduced to central air conditioning refrigerating water system's cooling water |
| CN115031309A (en) * | 2022-04-24 | 2022-09-09 | 中国电建集团北京勘测设计研究院有限公司 | Cooling water system for water-cooled chiller of pumped storage power station |
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| CN104456789A (en) | 2015-03-25 |
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