CN103438545A - Conventional composite cold and heat source coupled water-cold-storage air conditioning system based on independent temperature and humidity control and application method thereof - Google Patents
Conventional composite cold and heat source coupled water-cold-storage air conditioning system based on independent temperature and humidity control and application method thereof Download PDFInfo
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Abstract
The invention relates to a conventional composite cold and heat source coupled water-cold-storage air conditioning system based on independent temperature and humidity control and an application method thereof. The air conditioning system comprises a temperature control system and a humidity control system which are respectively used for controlling indoor temperature and humidity, wherein the humidity control system treats outdoor fresh air by adopting an independent solution humidifying type fresh air unit and supplies treated fresh air to a room; and the temperature control system comprises air conditioning cold and heat sources and an air conditioning terminal. According to the air conditioning system, the integrated operating energy efficiency of the air conditioning system is increased greatly, the characteristic that the refrigeration energy efficiency of an air cooling/heating pump increases along with the decrease of outdoor dry bulb temperature is utilized, a fire water tank is combined to carry out cold accumulation by using a night-time low-electricity-price time period, so that the grid load is balanced through load shifting, and the installed power of equipment is lowered; and in transition seasons, free cold supplying is realized in two manners of preparing frozen water by using a cooling tower and directly supplying cold by using outdoor low-enthalpy fully-fresh air, so that the cold source open time of an air conditioner is shortened. Therefore, the aims of saving energy, reducing emissions, saving electricity and reducing the operating cost are realized.
Description
Technical field
The present invention relates to a kind of air-conditioning system, relate in particular to a kind of conventional composite cold thermal source coupled water chilling air conditioning system and using method thereof of independently controlling based on humiture.
Background technology
Along with development and the environmental resource pressure of China's economic society are increasing, the energy-saving and emission-reduction situation is increasingly serious.Building energy consumption accounts for social total energy consumption ratio and improves year by year, and according to the firmly section's of building measuring and calculating, about the year two thousand thirty, China's building energy consumption will account for the 30%-40% of total energy consumption, reaches American-European current ratio, surpasses industrial energy consumption, becomes the first energy consumption rich and influential family of the whole society.The high problem of Chinese large-sized Energy Consumption of Public Buildings becomes increasingly conspicuous at present, the relevant expert investigates statistical analysis, government offices' office building and large public building year power consumption account for 22% of national cities and towns total power consumption, every square metre of power consumption is ordinary residence 10～20 times more than, be 1.5～2 times of the similar building of developed country such as European, Japanese; Chinese large-sized public building energy consumption system efficiency generally lower, energy waste is serious, is undisputable fact and ubiquitous phenomenon.So do a good job of it energy-conservation especially public building field energy-conservation of building field, it is the most important thing.Air conditioning energy consumption accounts for more than 60% of public building total energy consumption, is the energy consumption rich and influential family of public building, is the emphasis system of building energy conservation.Carry out green building, realize that energy-saving and emission-reduction become the important proposition that current government faces at present, new design for economical air conditioning system ought to cause the concern of vast design of HVAC engineer's emphasis, faced urgent task.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of health, comfortable, green, environmental protection, energy-conservation, conventional composite cold thermal source coupled water chilling air conditioning system and the using method thereof independently controlled based on humiture efficiently are provided.
The technical solution adopted in the present invention is: it comprises temperature control system and MCS, respectively temperature and the humidity in control room.
Described MCS is to adopt the independently new blower fan group of solution humidifying type to carry out the outer new wind of process chamber, and sends into indoor by the new wind after processing.
Described temperature control system comprises air conditioner cold-heat source and air conditioning terminal.
Described air conditioner cold-heat source adopts that to take air source heat pump air-conditioner technology, transition season free cold supply of cooling column technology be the sensible heat Cooling and Heat Source association that basis forms with large temperature difference water Cool Storage Technology, and described association comprises cooling tower, high temperature cold water unit, Air-Cooled Heat Pump Unit, cold-storage fire-fighting pond, cold-storage/release, and cold drawing changes, the free cold supply plate changes, pipe valve and equipment, control system, water knockout drum, water collector;
Air conditioner cold water or hot water prepared by described sensible heat Cooling and Heat Source association are dispensed to air conditioning terminal by water knockout drum, water collector;
Described cooling tower connects respectively the condenser of high temperature cold water unit, the primary side that the free cold supply plate changes by pipeline; Be connected respectively the evaporimeter of high temperature cold water unit, the secondary side that the free cold supply plate changes by first pipeline between water collector and water knockout drum; Be connected respectively Air-Cooled Heat Pump Unit, cold-storage/the release secondary side that cold drawing changes by second pipeline between water collector and water knockout drum; The cold-storage fire-fighting pond connects cold-storage/the release primary side that cold drawing changes by pipeline; The secondary side that cold-storage/release cold drawing changes connects respectively water collector and water knockout drum, Air-Cooled Heat Pump Unit by pipeline.
Described air conditioning terminal adopts the air-treatment unit, is provided with the all-fresh air pipeline in the straight-through outdoor air port in parallel with the air-conditioning return air pipeline, on backwind tube and all-fresh air pipeline, electrically operated valve is set respectively.
Advantage of the present invention is as follows:
Global design theory of the present invention is:
By integrating the advantage of air-conditioning novel energy-conserving technology, NEW TYPE OF COMPOSITE pattern and the operational mode of air conditioner cold-heat source proposed, significantly improve the integrated operation efficiency of air-conditioning system.The characteristics of utilizing the air-cooled heat pump refrigeration efficiency to raise along with the reduction of outdoor dry-bulb temperature, in conjunction with fire cistern, utilize the night dip electricity price period to carry out cold-storage, peak load shifting balancing power network load, reduction equipment installed power, the user can enjoy the electricity price preferential policy simultaneously, realize the electricity saving and energy saving operation, there is good Social benefit and economic benefit; Transition season adopts cooling tower to produce chilled water, utilize two kinds of modes of the direct cooling of outdoor low enthalpy all-fresh air to realize free cold supply, reduces the time that cold source of air conditioning is opened.The chilled water system converting operation, can tackle the demand of overtime work period to air-conditioning cooling or heat supply flexibly.This system can realize the purpose of energy-saving and emission-reduction, economize on electricity, province's operating cost.
1. utilize the new blower fan group of solution humidifying type to control indoor humidity, overcome the shortcoming that freeze drying need to adopt low-temperature cold water.During the system cooling, high temperature cold water system (14～19 ℃ of supply and return water temperatures) is set, the mode of the evaporating temperature by improving the high temperature cold water unit, improve the efficiency of system.
2. the characteristics that raise along with the reduction of outdoor dry-bulb temperature in conjunction with the air-cooled heat pump refrigeration efficiency.During cool-storage in summer, utilize the lower meteorological condition of outdoor dry-bulb temperature at night to reduce the Air-Cooled Heat Pump Unit condensation temperature, improve the efficiency of system; During Winter heat supply, Air-Cooled Heat Pump Unit, from outdoor heat-obtaining, is efficiently moved.Reach the purpose of energy-saving and emission-reduction.
3. in low power consumption period at night, in conjunction with fire cistern, carry out cold-storage summer.Taking full advantage of the preferential electricity price period of low ebb carries out water cold-storage (18～5 ℃ of cold-storage start-stop temperature), and the refrigerating efficiency of Air-Cooled Heat Pump Unit, still in efficient district, reduces system operation cost.
Daytime in summer water storage pool and high temperature cold water unit air conditioning, reduce the installed power of consumer.The cold of releasing with pond supplements the high temperature cold water unit, guarantees that the high temperature cold water unit is at the high efficiency section operation.Winter, Air-Cooled Heat Pump Unit switched to heat supply mode, from outdoor heat-obtaining to indoor heating.
5. transition season utilizes free cold supply of cooling column, produces chilled water, reduces Cooling and Heat Source opening time and operation energy consumption.
6. the air-treatment unit of air conditioning terminal considers that utilizing outdoor low enthalpy air at transition season is the indoor dehumidifying of reducing phlegm and internal heat, and reduces Cooling and Heat Source opening time and operation energy consumption.
7. the overtime work period, the high temperature cold water unit is out of service, water storage pool cooling, water pump of air conditioner converting operation, the underload demand of reply overtime work usage space flexibly.
The accompanying drawing explanation
Fig. 1 is based on the conventional composite cold thermal source coupled water chilling air conditioning system flow chart that humiture is independently controlled;
The conventional composite cold thermal source coupled water chilling air conditioning system schematic diagram that Fig. 2 independently controls based on humiture;
Fig. 2 a water cold-storage at night in summer pattern schematic diagram;
Fig. 2 b air conditioning pattern on daytime in summer schematic diagram;
Fig. 2 c heat supply mode schematic diagram on daytime in winter;
Fig. 2 d transition season free cold supply of cooling column pattern schematic diagram;
Fig. 3 designs a day Cooling and Heat Source association summer and moves tactful curve map;
Fig. 4 non-designed day in summer Cooling and Heat Source association moves tactful curve map;
Fig. 5 end air conditioning duct system schematic diagram;
Ningde branch of Fig. 6 Bank of China Co., Ltd. general layout.
Label declaration
(1): cooling tower, (2): the high temperature cold water unit,
(3): Air-Cooled Heat Pump Unit, (4): the cold-storage fire-fighting pond,
(5): cold drawing changes for cold-storage/release, (6): the free cold supply plate changes,
(7): pipe valve and equipment, (8): control system,
(9): water knockout drum, (10): water collector.
The specific embodiment
In order to make structure of the present invention more clear complete, below in conjunction with accompanying drawing, the present invention is described further.
Adopt separate temperature control system and MCS, respectively temperature and the humidity in control room.
Described MCS is to adopt the new blower fan group of solution humidifying type to carry out the outer new wind of process chamber, and the resh air requirement after processing by control and water capacity thereof reach the purpose of controlling indoor humidity.
Described temperature control system comprises air conditioner cold-heat source and air conditioning terminal.
Described air conditioner cold-heat source adopts sensible heat Cooling and Heat Source association, and described sensible heat Cooling and Heat Source association comprises that cooling tower 1, high temperature cold water unit 2, Air-Cooled Heat Pump Unit 3, cold-storage fire-fighting pond 4, cold-storage/release cold drawing changes 5, the free cold supply plate changes 6, pipe valve and equipment 7, control system 8, water knockout drum 9, water collector 10.Air conditioner cold water or hot water prepared by described sensible heat Cooling and Heat Source association are dispensed to air conditioning terminal by water knockout drum 9, water collector 10.
Condenser, free cold supply plate that described cooling tower 1 connects respectively high temperature cold water unit 2 by pipeline change 6 primary side; The evaporimeter, the free cold supply plate that are connected respectively high temperature cold water unit 2 by first pipeline between water collector 10 and water knockout drum 9 change 6 secondary side; Be connected respectively Air-Cooled Heat Pump Unit 3, cold-storage/release cold drawing to change 5 secondary side by second pipeline between water collector 10 and water knockout drum 9; The cold-storage fire-fighting pond connects cold-storage/release cold drawing to change 5 primary side by pipeline; Cold-storage/release cold drawing changes 5 secondary side and connects respectively water collector 10 and water knockout drum 9, Air-Cooled Heat Pump Unit 3 by pipeline.
Described pipe valve and equipment 7 comprise switch valve in season, change working valve corresponding on pond charge cycle pump, pool circulating pump, hot and cold water frequency variable circulating pump, cold water frequency variable circulating pump, cooling water pump and the pipeline of describing in above-mentioned (a)～(e).Described control system 8 comprises that start and stop and the converting operation of keying control, the water pump of switch valve in each, change working valve are controlled in season, the operation number of units of cooling tower is controlled, the operation number of units of high temperature cold water unit is controlled, the supporting control systems such as operation number of units control of Air-Cooled Heat Pump Unit.
The concrete connected mode of equipment, pipeline and valve of described sensible heat Cooling and Heat Source association is as follows:
(a) described cooling tower 1 arranges confession, the return pipe of cooling water, and cooling water, through the cooling water pump pressurization, is established the two-way arm, and the condenser, the free cold supply plate that are connected to respectively high temperature cold water unit 2 change 6 primary side; The switch valve in season is set respectively on pipeline;
(b) backwater in described water collector 10, through the pressurization of cold water frequency variable circulating pump, is established the two-way arm, and the evaporimeter, the free cold supply plate that connect respectively high temperature cold water unit 2 change 6 secondary side, access water knockout drum 9; The switch valve in season is set respectively on pipeline;
(c) backwater in described water collector 10, through the pressurization of hot and cold water frequency variable circulating pump, is established two arms, connects respectively Air-Cooled Heat Pump Unit 3, cold-storage/release cold drawing to change 5 secondary side, access water knockout drum 9; The change working valve is set respectively on pipeline;
(d) described cold-storage fire-fighting pond 4 arranges a road confession, return pipe, through the pressurization of pool circulating pump, and connection cold-storage/release cold drawing to change 5 primary side;
(e) described cold-storage/release cold drawing changes 5 secondary side and one tunnel is set for return pipe, establishes the two-way arm, the first via: the backwater in water collector 10 connects cold-storage/release cold drawing to change 5 secondary side access water knockout drum 9 through the pressurization of hot and cold water frequency variable circulating pump; The second tunnel: backwater, through the pressurization of pond charge cycle pump, connects Air-Cooled Heat Pump Unit 3, connection cold-storage/release cold drawing to change 5 secondary side; The change working valve is set respectively on pipeline;
Described air conditioning terminal adopts the air-treatment unit, is provided with the brand-new airduct in the straight-through outdoor air port in parallel with the air-conditioning return air pipeline, on backwind tube and all-fresh air pipeline, electrically operated valve is set respectively.Transition season, by the switching of airduct valve, utilizes the air of outdoor low enthalpy to meet indoor thermally comfortable environment requirement, reduces the time that Cooling and Heat Source is opened.
System control principle of the present invention is as follows:
Control the start and stop number of units of keying, water pump of switch valve in each, change working valve and converting operation, the operation number of units of cooling tower 1, the operation number of units of high temperature cold water unit 2, the operation number of units of Air-Cooled Heat Pump Unit 3 by control system 8 in season, can realize water cold-storage at night in summer, daytime in summer air conditioning, Winter heat supply and four kinds of different operational modes of transition season free cold supply of cooling column.
Concrete control mode is as follows:
(a) be water cold-storage pattern night in summer (trough-electricity stage):
Its assembly operating situation is as follows: Air-Cooled Heat Pump Unit 3, pond charge cycle pump, pool circulating pump startup, valve V1 open, other water pumps and valve closing;
(b) be the air conditioning pattern daytime in summer:
Its assembly operating situation is as follows: cooling tower 1, high temperature cold water unit 2, cooling water pump, cold water frequency variable circulating pump, hot and cold water frequency variable circulating pump, pool circulating pump are opened; Valve K1, valve K3, valve V2 open;
(c) be heat supply mode winter:
Its assembly operating situation is as follows: Air-Cooled Heat Pump Unit 3, hot and cold water frequency variable circulating pump are opened; Valve V3 opens; Other water pumps and valve closing;
(d) transition season is the free cold supply of cooling column pattern:
Its assembly operating situation is as follows: cooling tower 1, cooling water pump, cold water frequency variable circulating pump; Valve K2, valve K4 open; Other water pumps and valve closing.
Actual temp is set as follows:
(a) night in summer, (trough-electricity stage) was water cold-storage pattern: Air-Cooled Heat Pump Unit 3 utilizes cold-storage fire-fighting pond 4 to carry out the water cold-storage, the cold water temperature scope in cold-storage fire-fighting pond 4 is 5～18 ℃, 5 ℃ is the pond water temperature after the cold-storage end, 18 ℃ is the pond water temperature after letting cool end, and the temperature difference of water cold-storage is △ t=13 ℃; Wherein, the pond water temperature after the end of pond cold-storage can be adjusted accordingly according to actual refrigeration requirement;
(b) be the air conditioning pattern daytime in summer: high temperature cold water unit 2 forms cold source of air conditioning in parallel with fire-fighting water storage pool 4, to building air-conditioning sensible heat end-equipment, provides the air conditioning water of 14 ℃, and return water temperature is 19 ℃;
(c) be heat supply mode winter: Air-Cooled Heat Pump Unit 3 switches to heat supply mode, directly to building air-conditioning sensible heat end-equipment, provides the air conditioning hot of 43 °, and return water temperature is 37 ℃;
(d) transition season is the free cold supply of cooling column pattern: cooling tower 1 changes the 6 primary side cold water that provide lower than 13 ℃ for the free cold supply plate, and the secondary side chilled water system provides the air conditioning water of 14 ℃ to building air-conditioning sensible heat end-equipment, and return water temperature is 19 ℃.
Cooling and Heat Source association arranges main points
Conversion between described four kinds of operational modes, basic principle is the equipment start-stop by different time sections, coordinates relevant valve switching to realize.Wherein main switch valve comprises switch valve and change working valve in season.By season, the keying of switch valve realizes that cooling water enters the condenser of high temperature cold water unit summer, transition season enters the free cold supply plate and changes, and the keying by the change working valve realizes that air conditioner cold and hot water enters different capital equipment (cold drawing changes for high temperature cold water unit, Air-Cooled Heat Pump Unit, cold-storage fire-fighting pond, cold-storage/release, free cold supply plate change) under different patterns.As Fig. 2.
Wherein, valve K1～K4 is the switch valve in season, and valve V1～V3 is the change working valve.
Relevant valve opening and closing state is as follows:
(1) switching in season:
Freeze season: open valve K1, K3; Valve-off K2, K4;
Transition season: valve-off K1, K3; Open valve K2, K4;
Heat supply season: valve-off K1～K4.
(2) change working:
Night in summer the water cold-storage: open valve V1, valve-off V2, V3;
Daytime in summer air conditioning: open valve V2, valve-off V1, V3;
Heat supply on daytime in winter: open valve V3, valve-off V1, V2.
Above two groups of valves switch jointly, coordinate the operation of the equipment such as high temperature cold water unit, Air-Cooled Heat Pump Unit, corresponding function water pump can realize above-mentioned four kinds of operational modes, as shown in Fig. 2 a, 2b, 2c, 2d.
(annotate: for evaporimeter, condenser backhaul number and the machine room condition of different handpiece Water Chilling Units, source pump, valve quantity will change to some extent.）
The operation strategy of Cooling and Heat Source association
(1) during Winter heat supply, Air-Cooled Heat Pump Unit is pressed the heat pump heat supply mode operation, opens the equipment such as valve on respective line, water pump simultaneously and can realize to building heat supplying.
(2) during summer cooling, system water at night cold-storage, daytime air conditioning.Utilize the preferential electrovalence policy of low ebb, can realize the electrical network peak load shifting, reduce the installed power of equipment simultaneously.
(a) the operation strategy of design day operating mode is as Fig. 3.In the preferential electricity price period at night, Air-Cooled Heat Pump Unit is carried out the water cold-storage in conjunction with the cold-storage fire-fighting pond; The air-conditioning period on daytime, the 100% ability operation of high temperature cold water unit, cold auxiliary cooling is released in pond.
(b) the operation strategy of non-designed day operating mode (be summer air conditioning load lower than design day operating mode time) is as Fig. 4.In the preferential electricity price period at night, Air-Cooled Heat Pump Unit is carried out the water cold-storage in conjunction with the cold-storage fire-fighting pond; The air-conditioning period on daytime, cold auxiliary cooling is released in pond, and simultaneity factor is controlled the high temperature cold water unit in high energy efficiency interval (rate of load condensate 50%～100%) operation.
(c) the overtime work period (time period that night cold-storage, air-conditioning period on daytime are outer), the high temperature cold water unit is out of service, and pond is released cold, and cold water frequency variable circulating pump converting operation, to part overtime work zone supply air conditioning water.
(3) when the outdoor wet-bulb temperature of transition season is low, cooling tower provides the primary side cold water lower than 13 ℃ for the free cold supply plate changes, the secondary side chilled water system provides the air conditioning water of 14 ℃ to building air-conditioning sensible heat end-equipment, return water temperature is 19 ℃, reduces Cooling and Heat Source opening time and operation energy consumption.
Transition season all-fresh air cooling main points are set
The conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture, end mainly adopts dry type air-treatment unit, new wind connects from the new blower fan group of heat-pump-type solution humidifying type, establish altogether three of switching air-valves, lay respectively on brand-new airduct, air-conditioning return air pipe, the new blower fan fresh wind tube of heat-pump-type solution humidifying type, be called for short successively FV1, FV2, FV3, as Fig. 5.
When Winter heat supply and summer cooling, open FV2, FV3, close FV1; Otherwise transition season.Can realize utilizing at transition season the purpose of outdoor low enthalpy air cooling.
Embodiment:
Project profile: the Energy Saving Benefit Analysis of implementing at Ningde branch one office building
This office block construction area approximately 19,102m2, B1,15 layers on the ground.Fig. 6 is shown in by the project general layout.
The on-site weather conditions of engineering:
(1) Fuzhou is closed in this project construction place, and the air-conditioning calculating parameter is chosen by Fuzhou area.Wherein, 35.9 ℃ of the outdoor calculating dry-bulb temperatures of summer air-conditioning, 28.0 ℃ of wet-bulb temperature; 10.9 ℃ of winter air-conditioning accounting temperatures, relative humidity 74%.
(2) according to the data statistics of the special-purpose meteorological dataset of Chinese architecture analysis of Thermal Environment, water cold-storage period night in summer (22:00～7:00) the highest dry-bulb temperature is 29.8 ℃.
Air conditioning system schemes: the Air Conditioning Scheme of this office block adopts the conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture.
(1) utilize the new blower fan group of solution humidifying type to carry out the outer new wind of process chamber, the resh air requirement after processing by control and water capacity thereof reach the purpose of controlling indoor humidity.
(2) temperature control system comprises air conditioner cold-heat source and air conditioning terminal.
Air conditioner cold-heat source adopts the form of sensible heat Cooling and Heat Source association, and equipment and associated conduit, valve arrange same Fig. 2, configure as follows:
(1) cooling tower:
Adopt open type super low noise glass fibre reinforced plastics cooling tower, the specified water yield 110m3/h of separate unit, totally 2;
(2) high temperature cold water unit:
Adopt the high temperature cold water unit, the separate unit capacity is 1100kw, totally 1;
(3) Air-Cooled Heat Pump Unit:
Adopt Air-Cooled Heat Pump Unit, the separate unit capacity is 600kw, totally 1;
(4) cold-storage fire-fighting pond: the water yield is 450T;
(5) cold-storage/release cold drawing to change: specified heat exchange amount 350kw, totally 2;
(6) the free cold supply plate changes: specified heat exchange amount 450kw, totally 2;
(7) pipe valve and equipment:
Season switch valve: K1～K4, totally 4;
Cold water frequency variable circulating pump: separate unit flow 105m3/h, lift 30m, totally 3;
Hot and cold water frequency variable circulating pump: separate unit flow 115m3/h, lift 30m, totally 2;
Pond charge cycle pump: separate unit flow 55m3/h, lift 15m, totally 2;
Cold circulating pump is released in pond: separate unit flow 115m3/h, lift 15m, totally 2;
Cooling water pump: separate unit flow 110m3/h, lift 24m, totally 2;
The change working valve of correspondence on pipeline: V1～V3, totally 3.
(7) control system:
Start and stop and the converting operation that comprises keying control, the water pump of switch valve in each, change working valve controlled in season, the operation number of units of high temperature cold water unit is controlled, the supporting control systems such as operation number of units control of Air-Cooled Heat Pump Unit.
Air conditioning terminal mainly adopts the combined air processing group, open wide Office Area and adopted the transition season all-fresh air for refrigeration technique, electrically operated valve same Fig. 5 is set.
The Energy Saving Benefit Analysis of this office block
This shop air conditioning system schemes adopts the conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture.Three most crucial power-saving technologies that this scheme comprises are as follows:
(1), the humiture autonomous control system, solve respectively indoor waste heat, remaining wet problem, guaranteed the feasibility of high temperature low-temperature receiver and large temperature difference fire cistern cold-storage, simultaneously in conjunction with heat recovery technology, improve system efficiency, improve efficiency of energy utilization;
(2), the air-cooling heat pump air conditioner utilization, utilize during the water cold-storage night in summer the lower meteorological condition of outdoor dry-bulb temperature at night to reduce the Air-Cooled Heat Pump Unit condensation temperature, improve the efficiency of system; During Winter heat supply, Air-Cooled Heat Pump Unit, from outdoor heat-obtaining, is efficiently moved.Thereby reach the purpose of energy-saving and emission-reduction;
(3), Air-Cooled Heat Pump Unit associating fire cistern carries out large temperature difference cold-storage, utilizes fire cistern cold-storage at night, reaches the purpose of peak load shifting, balanced electrical network, enjoys the low ebb electricity price simultaneously, saves operating cost; Be different from ice-storage system, it is efficient that the efficiency of chilled water storage system can guarantee to continue; Large temperature difference water cold-storage guarantees that the fire cistern of equal volume can provide the cold storage capacity more than 2.6 times; Release when cold, the high temperature cold water unit by rational control model, guarantees that the high temperature cold water unit always turns round in the efficient energy-saving zone, increases substantially the Energy Efficiency Ratio of unit and system with large temperature difference water storage pool.
Can calculate, this project air-conditioning system EER value can reach more than 4.5, and the annual air-conditioning system operation electricity charge can reduce by 600 tons of CO every year more than saving and can reaching 600,000 Kwh
2discharge capacity, year save 210 tons of primary energy standard coals, can save 480,000 yuan of operating costs (every degree electricity is pressed 0.8 yuan of calculating, does not calculate preferential that the night dip electricity price brings), has good society and environmental benefit.
Claims (6)
1. a conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture, it is characterized in that: it comprises temperature control system and MCS, respectively temperature and the humidity in control room;
Described MCS is to adopt the independently new blower fan group of solution humidifying type to carry out the outer new wind of process chamber, and sends into indoor by the new wind after processing;
Described temperature control system comprises air conditioner cold-heat source and air conditioning terminal;
Described air conditioner cold-heat source adopts sensible heat Cooling and Heat Source association, and described sensible heat Cooling and Heat Source association comprises that cold drawing changes (5), the free cold supply plate changes (6), pipe valve and equipment (7), control system (8), water knockout drum (9), water collector (10) for cooling tower (1), high temperature cold water unit (2), Air-Cooled Heat Pump Unit (3), cold-storage fire-fighting pond (4), cold-storage/release; Air conditioning terminal adopts the air-treatment unit, and on the pipeline of air-treatment unit, electrically operated valve is set;
Air conditioner cold water or hot water prepared by described sensible heat Cooling and Heat Source association are dispensed to air conditioning terminal by water knockout drum (9), water collector (10);
Described cooling tower (1) connects respectively the condenser of high temperature cold water unit (2), the primary side that the free cold supply plate changes (6) by pipeline; Be connected respectively the evaporimeter of high temperature cold water unit (2), the secondary side that the free cold supply plate changes (6) by pipeline between water collector (10) and water knockout drum (9); Be connected respectively Air-Cooled Heat Pump Unit (3), cold-storage/the release secondary side that cold drawing changes (5) by pipeline between water collector (10) and water knockout drum (9); The cold-storage fire-fighting pond connects cold-storage/the release primary side that cold drawing changes (5) by pipeline; The secondary side that cold-storage/release cold drawing changes (5) connects respectively water collector (10) and water knockout drum (9), Air-Cooled Heat Pump Unit (3) by pipeline.
2. the conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture according to claim 1 is characterized in that:
Described pipe valve and equipment (7) comprise switch valve in season, change working valve corresponding on pond charge cycle pump, pool circulating pump, hot and cold water frequency variable circulating pump, cold water frequency variable circulating pump, cooling water pump and pipeline; Described control system (8) comprises that start and stop and the converting operation of keying control, the water pump of switch valve in each, change working valve are controlled in season, the operation number of units of cooling tower is controlled, the operation number of units of high temperature cold water unit is controlled, the operation number of units of Air-Cooled Heat Pump Unit is controlled supporting control system;
The concrete connected mode of equipment, pipeline and valve of described sensible heat Cooling and Heat Source association is as follows:
(a) described cooling tower (1) arranges confession, the return pipe of cooling water, and cooling water, through the cooling water pump pressurization, is established the two-way arm, is connected to respectively the condenser of high temperature cold water unit (2), the primary side that the free cold supply plate changes (6); The switch valve in season is set respectively on pipeline;
(b) backwater in described water collector (10), through the pressurization of cold water frequency variable circulating pump, is established the two-way arm, connects respectively the evaporimeter of high temperature cold water unit (2), the secondary side that the free cold supply plate changes (6), access water knockout drum (9); The switch valve in season is set respectively on pipeline;
(c) backwater in described water collector (10), through the pressurization of hot and cold water frequency variable circulating pump, is established two arms, connects respectively Air-Cooled Heat Pump Unit (3), cold-storage/release the secondary side that cold drawing changes (5), accesses water knockout drum (9); The change working valve is set respectively on pipeline;
(d) described cold-storage fire-fighting pond (4) arrange a road for, return pipe, through the pressurization of pool circulating pump, connect cold-storage/the release primary side that cold drawing changes (5);
(e) secondary side that described cold-storage/release cold drawing changes (5) arranges a road for return pipe, if two-way arm, the first via: the backwater in water collector (10) connects cold-storage/the release secondary side that cold drawing changes (5), access water knockout drum (9) through hot and cold water frequency variable circulating pump pressurization; The second tunnel: backwater, through pond charge cycle pump pressurization, connects Air-Cooled Heat Pump Unit (3), connects cold-storage/the release secondary side that cold drawing changes (5); The change working valve is set respectively on pipeline.
3. the conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture according to claim 1 is characterized in that:
Described air conditioning terminal adopts the air-treatment unit, is provided with the brand-new airduct in the straight-through outdoor air port in parallel with the air-conditioning return air pipeline, on backwind tube and all-fresh air pipeline, electrically operated valve is set respectively.
4. according to the using method of the described system of claim 1-3, it is characterized in that:
It controls the start and stop number of units of keying, water pump of switch valve in each, change working valve and converting operation, the operation number of units of cooling tower (1), the operation number of units of high temperature cold water unit (2), the operation number of units of Air-Cooled Heat Pump Unit (3) in season by control system (8), can realize water cold-storage at night in summer, daytime in summer air conditioning, Winter heat supply and four kinds of different operational modes of transition season free cold supply of cooling column.
5. the conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture according to claim 4 is characterized in that:
Concrete control mode is as follows:
(a) be water cold-storage pattern night in summer (trough-electricity stage):
Its assembly operating situation is as follows: Air-Cooled Heat Pump Unit (3), pond charge cycle pump, pool circulating pump startup, valve V1 open, other water pumps and valve closing;
(b) be the air conditioning pattern daytime in summer:
Its assembly operating situation is as follows: cooling tower (1), high temperature cold water unit (2), cooling water pump, cold water frequency variable circulating pump, hot and cold water frequency variable circulating pump, pool circulating pump are opened; Valve K1, valve K3, valve V2 open;
(c) be heat supply mode winter:
Its assembly operating situation is as follows: Air-Cooled Heat Pump Unit (3), hot and cold water frequency variable circulating pump are opened; Valve V3 opens; Other water pumps and valve closing;
(d) transition season is the free cold supply of cooling column pattern:
Its assembly operating situation is as follows: cooling tower (1), cooling water pump, cold water frequency variable circulating pump; Valve K2, valve K4 open; Other water pumps and valve closing.
6. according to the described conventional composite cold thermal source coupled water chilling air conditioning system of independently controlling based on humiture of claim 4 or 5, it is characterized in that:
Actual temp is set as follows:
(a) night in summer, (trough-electricity stage) was water cold-storage pattern: Air-Cooled Heat Pump Unit (3) utilizes cold-storage fire-fighting pond (4) to carry out the water cold-storage, the cold water temperature scope in cold-storage fire-fighting pond (4) is 5～18 ℃, 5 ℃ is the pond water temperature after the cold-storage end, 18 ℃ is the pond water temperature after letting cool end, and the temperature difference of water cold-storage is △ t=13 ℃; Wherein, the pond water temperature after the end of pond cold-storage can be adjusted accordingly according to actual refrigeration requirement;
(b) be the air conditioning pattern daytime in summer: high temperature cold water unit (2) forms cold source of air conditioning in parallel with fire-fighting water storage pool (4), to building air-conditioning sensible heat end-equipment, provides the air conditioning water of 14 ℃, and return water temperature is 19 ℃;
(c) be heat supply mode winter: Air-Cooled Heat Pump Unit (3) switches to heat supply mode, directly to building air-conditioning sensible heat end-equipment, provides the air conditioning hot of 43 °, and return water temperature is 37 ℃;
(d) transition season is the free cold supply of cooling column pattern: cooling tower (1) provides the primary side cold water lower than 13 ℃ for the free cold supply plate changes (6), the secondary side chilled water system provides the air conditioning water of 14 ℃ to building air-conditioning sensible heat end-equipment, and return water temperature is 19 ℃.
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Address after: 350025 Tonghu Road, Drum Tower District, Fuzhou, Fujian Province, No. 188 Co-patentee after: Fujian Architectural Design Research Institute Co., Ltd. Patentee after: Xiao Jianren Address before: 350001 Tonghu Road, Drum Tower District, Fuzhou, Fujian Province, No. 188 Co-patentee before: Architectural Design Institute, Fukien Prov. Patentee before: Xiao Jianren |