CN102705898A - Solar potable water preparation system and method for preparing potable water by using solar potable water preparation system - Google Patents
Solar potable water preparation system and method for preparing potable water by using solar potable water preparation system Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
The invention provides a solar potable water preparation system and a method for preparing potable water by using the solar potable water preparation system, which aims to overcome the defects that when hot water is prepared by a solar water heater in the prior art, water scales and deposits are easily formed, nitrite is produced, and the potable water standard cannot be achieved. The solar potable water preparation system comprises a heat gathering system, a water storage system, a water system and an electric control system, wherein the water outlet temperature of the heat gathering system, the water level of the water storage system, and the water temperature and water level of the water system are controlled by the electric control system. By using the solar potable water preparation system and the method for preparing the potable water, the production of the nitrite can be prevented or effectively reduced, thereby obtaining the potable water which achieves the potable water standard.
Description
Technical field
The present invention relates to a kind of solar water heating system and adopt the method for this systems produce edible hot water.
Background technology
Solar energy has obtained at aspects such as bathing, heatings using widely.But because for a long time, constantly the water in the heat collector is heated, water can produce deposition, produces a large amount of nitrate, so can't reach the standard of drinking water with the direct-fired water of solar energy, can not drink.At present, in order to overcome above-mentioned shortcoming, those skilled in the art adopts the method for heat exchange, prepares drinking water with solar energy, and preparing drinking water through heat exchange has following shortcoming: system complex, cost height, efficient is than directly heating is low.Like patent name is " solar drinking water system ", and the patent No. is 200920102892.0, and Granted publication number is the Chinese utility model patent of CN201409808Y; Disclose a kind of heat transfer solar potable water system, it comprises storage tank and boiler, and storage tank is communicated with the thermal-arrest organ pipe; Water by in the thermal-collecting tube heating storage tank is provided with heat exchanger tube in storage tank, heat exchanger tube one end is communicated with running water pipe; The other end is connected with the boiler pipe, in storage tank, is provided with temperature sensor, by temperature sensor the water temperature in the storage tank is controlled; Have only when the water temperature in the storage tank reaches setting value; Cold water flow in the heat exchanger tube from the end that supplies water, and controls the temperature of water in the heat exchanger tube like this, has also just controlled the temperature of water in the boiler.In boiler, be provided with level sensor; By the water level in level sensor and the solenoid control boiler; Water temperature in storage tank reaches design temperature; Just the hot water in the heat exchanger tube reaches water in design temperature and the boiler when the water level control line is following, by thermal-collecting tube heat supply water in boiler.Adopt the solar drinking water system of this kind structure, owing to need to carry out secondary heat exchange through heat exchanger tube, not only thermal efficiency is low; And after the drinking water in the heat exchanger tube is heated, only when boiler needs water, could carry to boiler; If run into the situation of water when can't wait festivals or holidays; Water in the heat exchanger tube continues, is heated by the water in the storage tank times without number, is prone to cause a large amount of nitrate of water generates in the heat exchanger tube, thereby can not reaches drinking water standard.
Summary of the invention
The objective of the invention is to be directed against when solar water heater prepares hot water in the prior art; The water capacity is prone to knot trowel used for plastering deposition; Produce nitrite, can not reach the deficiency of standard for drinking, a kind of solar energy drinkable water preparation system is provided and adopts the method for this systems produce drinking water; Adopt this system can prevent or effectively reduce the generation of nitrite, thereby obtain to reach the drinkable water of drinking water standard.
The objective of the invention is to realize through following technical proposals:
A kind of solar energy drinkable water preparation system; Comprise collecting system, water storage system, water system and electric-control system; Described collecting system: be made up of metal-glass vacuum tube type solar thermal collector and the heat collector cooling-water temperature sensor that is arranged on said heat collector delivery port place, the water inlet of said heat collector is arranged on the lower end of heat collector, and is connected with feed pipe; Described delivery port is arranged on the upper end of said heat collector, and described feed pipe is provided with water supply electromagnetic valve D1; Described water storage system: be made up of storage tank, storage tank cooling-water temperature sensor, storage tank liquid level detector, said storage tank liquid level detector is minimum can discern storage tank lowest water level liquid level, the energy-conservation water level liquid level of storage tank; Described water system: be made up of potable water tank, potable water tank cooling-water temperature sensor, potable water tank liquid level detector, said potable water tank liquid level detector is minimum can discern potable water tank lowest water level liquid level and potable water tank peak level liquid level; The delivery port of said heat collector is communicated with said storage tank pipe through the storage tank feed pipe, and said storage tank is communicated with through potable water tank feed pipe pipe with said potable water tank, and described feed pipe is provided with potable water tank magnetic valve D7; By described electric-control system collection with handle the signal of telecommunication of said heat collector cooling-water temperature sensor, said storage tank liquid level detector, and control the open and close of said water supply electromagnetic valve D1 according to the said signal of telecommunication; By described electric-control system collection with handle the signal of telecommunication of described potable water tank cooling-water temperature sensor, potable water tank liquid level detector, and control the open and close of described potable water tank magnetic valve D7 and assistant heating according to the described signal of telecommunication; Described storage tank and said potable water tank are provided with aseptic air interchanger;
Further; Said solar energy drinkable water preparation system also is provided with the heat exchange cooling system; Described heat exchange cooling system is communicated with and is formed by fan radiator, circulating pump B1 pipe serial connection; Said heat exchange cooling system pipe is communicated with described heat collector and described storage tank; Described storage tank liquid level detector can also be discerned storage tank full-water level liquid level, said electric-control system collection and handle the signal of telecommunication of said storage tank cooling-water temperature sensor, said heat collector cooling-water temperature sensor, said storage tank liquid level detector, and controls the open and close of said fan radiator, said circulating pump B1 according to the described signal of telecommunication;
Further; Also be provided with the timing drainage system; Described timing drainage system by timer, be arranged on heat collector electromagnetism exhaust-valve D3 on the heat collector, be arranged on the storage tank electromagnetism exhaust-valve D4 on the storage tank, the potable water tank electromagnetism exhaust-valve D5 that is arranged on the potable water tank forms; Said electric-control system collection and handle the signal of telecommunication of said timer, and control said electromagnetism exhaust-valve D3, D4, D5 according to the described signal of telecommunication and open and close by described electric control system controls respectively;
Further, said storage tank is higher than said potable water tank setting, and the energy-conservation water level liquid level of said storage tank is higher than the peak level liquid level of said potable water tank;
Further, described aseptic air interchanger is made up of the potable water tank filtration breather valve that is arranged on the storage tank filtration breather valve on the said storage tank and be arranged on the said potable water tank;
Further; Described aseptic air interchanger is made up of the storage tank filtration breather valve and the air communication pipe that are arranged on the said storage tank; Be communicated with the top of said potable water tank by an end of said air communication pipe, the other end is communicated with the above storage tank inner chamber of said storage tank full-water level liquid level;
Further, described feed pipe and described potable water tank are communicated with through mixing the water pipe pipe, and described mixed water pipe and described feed pipe be communicated with the position between the water supply end of described water supply electromagnetic valve D1 and described feed pipe;
Further, the water supply end of described feed pipe is provided with three grades of filter for molten, and described storage tank feed pipe is provided with the filtration breather valve.
Another purpose: a kind of method of utilizing solar energy drinkable water preparation system to prepare drinkable water, adopt like the described solar energy drinkable water preparation system of one of claim 1-8 each item, prepare by following operational module:
(1) preparation: system is placed " duty "; Detect by the water temperature of described heat collector cooling-water temperature sensor described heat collector; Detect by the water temperature of described storage tank cooling-water temperature sensor described storage tank; Detect by the water temperature of described potable water tank cooling-water temperature sensor described potable water tank; Detect by the water level of described storage tank liquid level detector said storage tank; Detect by the water level of described potable water tank liquid level detector described potable water tank; Described heat collector cooling-water temperature sensor, storage tank cooling-water temperature sensor, potable water tank cooling-water temperature sensor, storage tank liquid level detector, potable water tank liquid level detector pass to described electric-control system with detected signal, by described electric-control system described signal are handled, and control the open and close of described water supply electromagnetic valve D1, described potable water tank magnetic valve D7, described auxiliary heater; Feed pipe is supplied water in heat collector by the heat collector lower end;
(2) said heat collector prepares the water of certain water temperature and supplies with said storage tank: when the water temperature of heat collector reaches the water outlet ceiling temperature; Supply water to storage tank by heat collector; When the water level of reducing to water outlet lower limit temperature and/or storage tank when the water temperature of heat collector reached storage tank full-water level liquid level, heat collector stopped to supply water to storage tank; Described water outlet ceiling temperature is lower than the easy fouling temperature of water;
(3) water of control storage tank is between energy-conservation water level and lowest water level: when the water level of storage tank is lower than storage tank lowest water level liquid level; Heat collector is the storage tank moisturizing; When the water level of storage tank reached the energy-conservation water level liquid level of storage tank, heat collector stopped to the storage tank moisturizing;
(4), supply water to potable water tank; Potable water tank obtains the water of certain water level certain water temperature, supplies the user to use: when the liquid level of potable water tank is lower than potable water tank lowest water level liquid level, to the potable water tank moisturizing; When the liquid level of potable water tank reaches the peak level liquid level, stop to the potable water tank moisturizing; When the potable water tank water temperature was lower than the minimum water temperature of potable water tank, auxiliary heater was opened; When the potable water tank water temperature meets or exceeds potable water tank during high water temperature, auxiliary heater cuts out;
Further, in the described module (two), when the water temperature of heat collector reaches on the water temperature in limited time; Circulating pump B1 opens, and forces water in described heat collector and described storage tank, to circulate, when the water temperature of described storage tank during more than or equal to 80 ℃-85 ℃; The fan radiator is opened, and the water of forced circulation is dispelled the heat, when the water temperature of storage tank is reduced to the water outlet ceiling temperature of heat collector; The fan radiator cuts out, and stops heat radiation; When the water temperature at heat collector delivery port place dropped to the water outlet lower limit temperature, circulation pump stopped to force the water circulation;
Further, in the described module (four), accomplish described to the potable water tank moisturizing as follows: potable water tank magnetic valve D7 opens, and storage tank is to the potable water tank moisturizing, and when the potable water tank water level reached the peak level liquid level, potable water tank magnetic valve D7 closed;
Further, the highest water temperature of described potable water tank is 90 ℃-95 ℃, and the minimum water temperature of described potable water tank is 80 ℃-85 ℃;
Further, in the described module (four), accomplish described to the potable water tank moisturizing and control the water temperature of potable water tank as follows:
When the potable water tank water level is lower than potable water tank lowest water level liquid level and/or potable water tank water temperature T 3 and is lower than the minimum water temperature of potable water tank; Auxiliary heater 10 is opened; When water level reaches the highest liquid level and potable water tank water temperature more than or equal to said potable water tank during high water temperature, auxiliary heater 10 cuts out; When potable water tank water temperature T 3 was lower than the minimum water temperature of potable water tank, potable water tank magnetic valve D7 opened, and mixed water solenoid valve D6 and closed at this moment; When potable water tank water temperature T 3 reached the highest water temperature of potable water tank, potable water tank magnetic valve D7 closed, and mixed water solenoid valve D6 and opened, and in potable water tank, added cold water; When potable water tank liquid level Y2 reached potable water tank peak level liquid level, mixed water solenoid valve, potable water tank magnetic valve D7 all closed;
Further, the highest water temperature of described potable water tank is 48 ℃-55 ℃, and the minimum water temperature of described potable water tank is 40 ℃-45 ℃;
Further; Carry out timing, arrive described timing time when system by described timer; The said control unlatching heat collector emptying solenoid valve D3 of system, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5, all the electric control element dead electricity except that heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 quit work simultaneously; Behind the emptying duration of system, system returns to " duty ";
Further, described water outlet ceiling temperature is 65 ℃-85 ℃, and the water outlet lower limit temperature is 50 ℃-60 ℃;
Further, the water temperature of described heat collector is the water temperature at described delivery port place.
Adopt systems produce drinkable water of the present invention, owing in system, be provided with collecting system, water storage system, drinking-water system and electric-control system, collecting system, water storage system, water system are provided with temperature sensor, liquid level sensor and the magnetic valve that is electrically connected with electric-control system; In water storage system and water system, be provided with the breath valve; Heat collector adopts big heat pipe form, and the lower end of feed pipe and heat collector pipe is connected, and water supply electromagnetic valve is associated through electric-control system with the heat collector cooling-water temperature sensor; So when the hot water of heat collector reaches design temperature and in storage tank, supplies water; Heat collector replenishes the water yield of self, makes it keep full water state, and the water temperature that can control heat collector is under the easy fouling temperature of water; And owing to adopt the water-supply structure of top water; Resident water for a long time not in the heat collector is avoided the generation of " thousand boiling water " " stagnant water ", has controlled intrasystem water from the source not by repeated heating and non-scaling; Because the water in the heat collector is pushed up to the storage tank by new water supply; So at heat collector when storage tank supplies water; Water temperature in the heat collector is in the process of reduction; Storage tank can obtain to be lower than the hot water of the fouling temperature of water, thereby has guaranteed that water is less scaling in storage tank, prevents the generation of bacterium; Be provided with lowest water level liquid level and energy-conservation water level liquid level in the water storage system, guaranteeing that potable water tank obtains can reducing the pressure of supply water of heat collector under the prerequisite of water of institute's expense, make heat collector be prone to the meet the requirements water of water temperature of preparation; Be provided with assisted heating device in the water system; The water temperature of potable water tank and water level receive the control of electric-control system, and water level and water temperature in the potable water tank all are controlled, can be according to water temperature and the water level in user's the water consumption adjustment potable water tank; Guaranteed that so not only the user uses the water that is fit to water temperature; And can reduce the interior water of water tank by the number of times of repeated heating, and having reduced the pollution of repeated heating to water quality, the breath valve can prevent in storage tank and potable water tank scavenging period, harmful substances in air to be brought in the native system; Through above-mentioned Comprehensive Control to water temperature, water level and ventilation, user Ke De reaches the drinkable water of drinkable water standard.
Adopt method of the present invention to prepare drinkable water, be prone in storage tank, only water is incubated under the fouling water temperature because the water temperature in the heat collector is controlled in; No longer water is heated, only in potable water tank, water is heated, and the water in the heat collector is pushed in the storage tank by cold water according to the water temperature of setting; The water level of storage tank is controlled at below the energy-conservation water level; The water level of potable water tank is controlled at below the peak level, and water can in time be used, and in heat collector, storage tank and potable water tank, does not accumulate; So can prevent and reduce water because of fouling and repeated heating breed bacteria and carcinogen, generation come nitrate, can obtain edible water.
Description of drawings
Fig. 1 is a solar energy drinkable water preparation system example structure sketch map of the present invention;
Fig. 2 is another example structure sketch map of solar energy drinkable water preparation system of the present invention.
Automatically controlled schematic flow sheet when Fig. 3 prepares the dining room water for adopting the inventive method;
Automatically controlled schematic flow sheet when Fig. 4 prepares direct drinkable water for adopting the inventive method.
Description of reference numerals
1 - mixed with water? 3 - filter tank breather valve? 4 - tank level detection device? 5 - full water tank level? 6 - air connection pipe? 7 - Water tank level detection device? 8 - water tank Breathing filter valve? 9 - the highest water level water tank level? 9'-water tank low water level? 10 - electric heater? 11 - Water tank temperature sensor? 12 - water tank? 13 - Water tank supply pipe? 15 - lowest water level tank level? 16 - saving water tank level? 17 - storage tank? 18 - storage tank temperature sensor? 20 - fan heatsink? 21 - pump filter? B1-circulating pump? 23 - Check Valves ? 26 - collector? 27 - outlet? 28 - collector temperature sensor? 29 - second breathing filter valve? 30 - storage tank water supply pipe? 31 - three filters? 32 - water pipe? D1-water solenoid valve? D3-collector emptying solenoid valve? D4-tank emptying solenoid valve? D5-water tank drain valve? D6-mixing water solenoid valve? D7-water tank solenoid valve? DJ1 auxiliary heating? B1 - circulation pump? F-radiator
The explanation of accompanying drawing breviary term:
Y1-water storage tank water level Y1 is full-and the energy-conservation water level liquid level of storage tank full-water level liquid level Y1 joint-storage tank Y1 is low-and storage tank lowest water level liquid level Y2-potable water tank water level Y2 height-potable water tank peak level liquid level Y2 is low-the potable water tank lowest water level liquid level T1-heat collector leaving water temperature T1 upper limit-heat collector water outlet ceiling temperature T1 lower limit-heat collector water outlet lower limit temperature T2-storage tank water temperature T 3-potable water tank water temperature T 3 height-minimum water temperature of the highest water temperature T 3 low-potable water tanks of potable water tank
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description:
One, shown in Fig. 1-4, solar energy drinkable water preparation system of the present invention comprises following system: collecting system, water storage system, water system, heat exchange cooling system, timed and forced drainage system and electric-control system are formed.
(1) collecting system: comprise metal-glass vacuum tube type solar thermal collector 26 (hereinafter to be referred as heat collector), be arranged on heat collector cooling-water temperature sensor T1 on the heat collector, be arranged on the water supply electromagnetic valve D1 on the feed pipe 32; Heat collector cooling-water temperature sensor T1 and water supply electromagnetic valve D1 all are electrically connected with electric-control system; Temperature signal T1 by electric-control system collection and processing heat collector cooling-water temperature sensor 28; And according to the unlatching of this temperature signal control water supply electromagnetic valve D1 or close, the bottom of heat collector 26 is managed with feed pipe 32 and is connected.Adopt big heat pipe collector in the native system, thermal medium and water produce heat exchange outside glass tube, and water does not enter in the glass tube; So scaling not in glass tube can not produce sediment, water promptly enters in the storage tank after the heat exchange segment of glass tube end is obtained heat; So can the water in the storage tank not heated repeatedly constantly; Avoid heat collector inner product water dirt, prevent the generation of nitrite, thereby precondition is provided for obtaining edible water.Preferably heat collector cooling-water temperature sensor T1 is arranged on delivery port 27 places on heat collector top, like this, can records the water temperature that heat collector supplies water more accurately.
(2) water storage system: form by storage tank 17, storage tank liquid level detector, storage tank cooling-water temperature sensor and storage tank air interchanger; Storage tank liquid level detector and storage tank cooling-water temperature sensor all are electrically connected with electric-control system; By the electric-control system collection with handle the storage tank liquid level detector and the signal of storage tank cooling-water temperature sensor, and according to the open and close of the signal controlling water supply electromagnetic valve D1 that is collected.The storage tank liquid level detector may detect three liquid levels in the storage tank at least and liquid level signal is passed to electric-control system, handles this signal by electric-control system, and according to the open and close of this signal controlling water supply electromagnetic valve D1.So can being the liquid level sensor that can survey three liquid levels at least, the storage tank liquid level detector is electrically connected with electric-control system; Like the float-ball type liquid level sensor; Also can be that three liquid level sensors are electrically connected with electric-control system respectively; Each liquid level sensor is surveyed a liquid level, and signal is passed to electric-control system; Top by storage tank 17 is connected with delivery port 27 pipes of heat collector; Air interchanger is the air filtration valve, and it is preferably disposed on the top of storage tank.The purpose that the water tank air interchanger is set is; Guarantee the free degree of storage tank 17 inner airs, make storage tank 17 and the free UNICOM of ambient atmosphere, air pressure and ambient pressure disequilibrium when preventing water or moisturizing in the storage tank; To present solar water container basically all is open design; Water tank is the direct and atmosphere through any equipment not, and water body is exposed in the air, causes the deficiency of secondary pollution; Adopt and filter breather valve 3 as the water tank air interchanger, the air that guarantees to get in the water tank is clean, aseptic.This filtration breather valve not only guarantees the air water tank of freely coming in and going out, and, can filter, clean the air that gets in the water tank, guarantee that the air that gets into water tank can not cause secondary pollution to water body.Be connected through storage tank feed pipe 30 pipes between storage tank and heat collector delivery port.
(3) water system: form by potable water tank 12, potable water tank water temperature sniffer, potable water tank level detecting device and assisted heating device; The water inlet of potable water tank is connected through potable water tank feed pipe 13 pipes with the delivery port of storage tank, and this potable water tank feed pipe 13 is provided with potable water tank magnetic valve D7.Potable water tank water temperature sniffer, potable water tank level detecting device, assisted heating device and potable water tank magnetic valve D7 are electrically connected with electric-control system respectively; By electric-control system collection and the water level signal of processing potable water tank and the water temperature signal of potable water tank, the open and close of control potable water tank magnetic valve D7 and the open and close of assistant heating.
The potable water tank level detecting device can be surveyed two liquid levels at least and signal is passed to electric-control system; By electric-control system the liquid level signal that collects is gathered and handled; This liquid level detector can be the liquid level sensor that can survey two liquid levels at least; Like the float-ball type liquid level sensor, also can be electrically connected and form by two common liquid level sensors such as potable water tank liquid level upper limit sensor 7 and potable water tank liquid level lower limited sensor 7 ' with electric-control system.Preferred assisted heating device is an electric heater 10.Electric heater is arranged on below the potable water tank lowest water level liquid level, prevents the electric heater dry combustion method.
Be provided with the potable water tank air interchanger at potable water tank 12 tops; This potable water tank air interchanger can be that potable water tank filters breather valve; Be more preferably the air communication pipe 6 that is communicated with storage tank 17 inner chambers and potable water tank 12 inner chambers; Be communicated with the top of storage tank 17 by an end of air communication pipe 6, the other end is communicated with the top of potable water tank 12;
When the potable water tank air interchanger adopts air communication pipe 6, the air of potable water tank through this air communication pipe 6 from storage tank mend into or discharge, when guaranteeing the potable water tank air free degree, the air that has also guaranteed to get into potable water tank is the pure air through filtering.So not only can save the consumption that filters breather valve, also can be when potable water tank liquid level upper limit sensor break down, completely the back is excessive to prevent the interior water of potable water tank.
In order to guarantee that potable water tank is lower than the storage tank setting between the water level peak level liquid level and lowest water level liquid level in the potable water tank, potable water tank peak level liquid level position hangs down and storage tank lowest water level liquid level position at least, otherwise, in the potable water tank supply channel, water pump is set.
(4) heat exchange cooling system: connect to form by fan radiator 20, circulating pump B1 pipe; Fan radiator and circulating pump are electrically connected with electric-control system respectively, and the water temperature signal that electric-control system collects according to heat collector cooling-water temperature sensor 28, storage tank cooling-water temperature sensor 18 is controlled the unlatching of fan radiator and circulating pump or closed.
Between heat collector 26 and storage tank 17, circulating pump B1 and fan heat sink are set, can avoid thermal-collecting tube high temperature, prevent fouling behind the water body high temperature.Can not reach 100% degree of purity because get into the water of drinking water preparation system; Avoid heat collector high temperature not only can prevent fouling in heat collector and the water tank; The assurance water body is clean, and the heat collector collecting efficiency that can also avoid causing because of water fouling in the system reduces, and improves the collecting efficiency of system.
This heat exchange cooling system is arranged on the connecting pipeline of storage tank 17 and thermal-collecting tube 26, as being arranged on the storage tank feed pipe 30, is preferably disposed on the pipeline that storage tank bottom and thermal-collecting tube bottom is connected.
(5) timing drainage system: by being arranged on heat collector electromagnetism exhaust-valve D3 on the heat collector, being arranged on storage tank electromagnetism exhaust-valve D4 on the storage tank, being arranged on potable water tank electromagnetism exhaust-valve D5 on the potable water tank and being electrically connected with electric-control system respectively and forming.When system reaches setting-up time; Electric-control system is opened heat collector electromagnetism exhaust-valve D3, storage tank electromagnetism exhaust-valve D4, potable water tank electromagnetism exhaust-valve D5; All electric control element dead electricity except that heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 simultaneously; Quit work, behind the emptying duration of system, system returns to duty; Above-mentioned three exhaust-valves are preferably disposed on by the bottom of drain vessel, avoid water to accumulate in the container.
When two, native system is worked, prepare drinkable water through following method:
During use, system places duty, and electric-control system is started working; Water temperature to heat collector, storage tank and potable water tank detects; Water level to storage tank and potable water tank detects, and begins the working time of system is carried out timing, whether detects whole system in the working time.
System controls water temperature in each container and water level as follows:
When the water temperature that 1, perceives heat collector delivery port 27 when heat collector cooling-water temperature sensor 28 reaches the water outlet ceiling temperature; Water supply electromagnetic valve D1 opens; Cold water pushes in the heat collector through the water inlet of feed pipe 32 and heat collector 26 bottoms; With hot water from heat collector top delivery port 27 jacking storage tanks 17, when the water temperature at delivery port place reached the water outlet lower limit temperature, water supply electromagnetic valve D1 closed.In said process, heat collector is to the storage tank normal water supply, and the water that is supplied is between water outlet ceiling temperature and water outlet lower limit temperature.The ceiling temperature of delivery port will be lower than the easy fouling water temperature of water, and at present, the easy fouling water temperature of the water of generally acknowledging is about 85 ℃.Optimizing limit temperature waterborne is 65 ℃-85 ℃, and the water outlet lower limit temperature is 50 ℃-60 ℃.
When the water level that 2, detects storage tank when storage tank liquid level sensor 4 reached storage tank full water liquid level 5: electric control system controls water supply electromagnetic valve D1 was in closed condition, and after the water temperature T 1 at delivery port 27 places met or exceeded the water outlet ceiling temperature, circulating pump B1 started; Force water in heat collector 26 and storage tank 17, to circulate; If through forced circulation, the water temperature T 2 of storage tank can not descend, still rise when reaching 80-85 ℃; Then fan radiator 20 is opened, and carries out forced heat radiation in the time of forced circulation; Fan radiator 20 cuts out when the water temperature T 2 of storage tank is reduced to the water outlet lower limit temperature of heat collector, and forced heat radiation stops.Circulating pump B1 closes when the water temperature at delivery port 27 places reaches the water outlet lower limit temperature, stops forced circulation.System has limited the water temperature in heat collector and the storage tank through above-mentioned work, and the temperature of the water in the two is under the easy fouling temperature of water always, reduces water fouling in heat collector and storage tank, for the preparation drinkable water has been created precondition.
When the water level that 3, detects storage tank when storage tank liquid level sensor 4 is lower than storage tank lowest water level liquid level 15; Water supply electromagnetic valve D1 opens; Heat collector is storage tank 17 moisturizings, and when the water level of storage tank 17 reached the energy-conservation water level of storage tank liquid level 16, water supply electromagnetic valve D1 closed.Like this, even the water temperature at heat collector delivery port 27 places does not reach the water outlet ceiling temperature, as long as the water level in the storage tank is lower than storage tank lowest water level liquid level; Then heat collector also supplies water in storage tank; Guarantee that the water in the storage tank remains on the lowest water level liquid level 15, but be lower than energy-conservation water level liquid level, so both guaranteed to keep in the storage tank certain water level; Also prevent the too much water at low temperature that does not reach temperature standard of input in storage tank, reach purpose of energy saving.The lowest water level liquid level of preferred potable water tank is positioned at 1/5th degree of depth places of storage tank, and energy-conservation water level liquid level is positioned at 1/4th degree of depth places of storage tank.
4, the liquid level Y2 that detects potable water tank 12 when potable water tank liquid level sensor 7 is lower than 9 ' time of potable water tank lowest water level liquid level; Potable water tank magnetic valve D7 opens; Storage tank 17 is to potable water tank 12 beginning moisturizings, and when Y2 reached peak level liquid level 9, potable water tank magnetic valve D7 closed; When potable water tank 12 water temperatures were lower than the minimum water temperature of potable water tank, electric heater 10 was opened; When the potable water tank water temperature meets or exceeds potable water tank during high water temperature, electric heater 10 cuts out, and so repeatedly, the water temperature of control potable water tank is between the highest water temperature and minimum water temperature, and the interior water level of control potable water tank is between peak level and lowest water level.The preferred the highest water temperature of potable water tank is 82 ℃-85 ℃, and the corresponding with it minimum water temperature of potable water tank is 90 ℃-95 ℃, and when the water temperature of potable water tank was controlled at this temperature range, native system is applicable to provided direct drinkable water.
The water capacity of the water capacity of the lowest water level liquid level of potable water tank and the lowest water level liquid level of storage tank is complementary, and could guarantee that like this storage tank has enough water to supply with potable water tank.
For energy-conservation, when being used for the dining room, native system require the lower field of water temperature fashionable as wash dish or cook etc., as follows water temperature in the potable water tank and water level are controlled.
The liquid level Y2 that detects potable water tank 12 when potable water tank liquid level sensor 7 is lower than potable water tank lowest water level liquid level 9 ' and/or potable water tank water temperature when being lower than minimum water temperature T 3, and electric heater 10 is opened; When potable water tank cooling-water temperature sensor 11 detects potable water tank water temperature T 3 and is lower than the minimum water temperature of potable water tank; Then potable water tank magnetic valve D7 unlatching, this moment mix water solenoid valve D6 and are in closed condition; T3 reaches the highest water temperature of potable water tank; Then potable water tank magnetic valve D7 closes, and mixes water solenoid valve D6 and opens, and in potable water tank, adds cold water; When T3 is lower than the minimum water temperature of potable water tank, mix water solenoid valve D6 and close, potable water tank magnetic valve D7 opens; Water filling in potable water tank so repeatedly, and the water temperature T 3 of control potable water tank, the water temperature T 3 that makes potable water tank is between the highest water temperature of potable water tank and the minimum water temperature of potable water tank.When potable water tank liquid level Y2 reached potable water tank peak level liquid level 9, mixed water solenoid valve D6, potable water tank magnetic valve D7 all closed, if this moment, T3 reached the highest water temperature of potable water tank; Then auxiliary heater stops heating; If this moment, the potable water tank water temperature T 3 still was lower than the highest water temperature of potable water tank, auxiliary heater still is in opening, when T3 meets or exceeds potable water tank during high water temperature; Auxiliary heater cuts out, and stops the water in the potable water tank is heated.Through above-mentioned control, the water levels in the potable water tank 12 remain on potable water tank peak level liquid level 9 and potable water tank lowest water level liquid level 9 ', the interior water temperature T 3 of potable water tank remains between the highest water temperature and minimum water temperature.At this, the highest water temperature of potable water tank can be 48 ℃-55 ℃, and the corresponding with it minimum water temperature of potable water tank is 40 ℃-45 ℃, when the water temperature in the potable water tank is controlled at this temperature range.Water consumption combination according to the user is energy-conservation, confirms the lowest water level liquid level and the peak level liquid level of potable water tank.
Said process is to be in the working condition under the normal water supply state at this drinkable water preparation system.And under normal conditions, night water consumption can reduce or stop water, if still the water of potable water tank is carried out water level and water temperature control, then can cause the waste of the energy by above-mentioned situation.For energy-conservation, stop the water level and the water temperature of potable water tank are monitored in the few system at night of water consumption.
Timing time when the system of arrival; Then system gets into automatic hull-borne: heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 open in the control system; All electric control element dead electricity except that heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 quit work simultaneously.Arrive the emptying duration of default, system evacuation water, system stops automatic hull-borne.
The purpose of doing like this is to prevent that intrasystem water RT is long, and breed bacteria influences the quality of water in the system.Be 5 days the blanking time that draining is set usually; Carried out once draining automatically in just per six days; Automatically draining is preferably disposed on and carries out evening; The control system can all discharge intrasystem water automatically, and then go up energy-conservation waterline 16 places of water to storage tank again, the minimum liquid level 9 ' of potable water tank is located, the system that does not influence second day uses.
Embodiment 1
System places " duty "; Heat collector cooling-water temperature sensor, storage tank cooling-water temperature sensor, potable water tank cooling-water temperature sensor, storage tank liquid level sensor, storage tank liquid level sensor detect the water temperature of corresponding heat collector, storage tank and potable water tank; Water level to corresponding storage tank and potable water tank detects; And begin the working time of system is carried out timing, whether detection system is in the working time.
A, when the water temperature of heat collector delivery port 27 reaches 65 ℃ of water outlet ceiling temperatures; Water supply electromagnetic valve D1 opens; Cold water pushes in the heat collector through the water inlet of feed pipe 32 and heat collector 26 bottoms; With hot water from heat collector top delivery port 27 jacking storage tanks 17, when the water temperature at delivery port place reached 60 ℃ of water outlet lower limit temperatures, water supply electromagnetic valve D1 closed.
B, when the water level of storage tank reaches storage tank full water liquid level 5: electric control system controls water supply electromagnetic valve D1 is in closed condition; Water temperature T 1 when delivery port 27 places meets or exceeds 65 ℃ of water outlet ceiling temperatures; Circulating pump B1 starts; When the water temperature T 2 of storage tank reaches when being prone to 85 ℃ of fouling water temperatures, then fan radiator 20 is opened, and fan radiator 20 cuts out when the water temperature T 2 of storage tank is reduced to 60 ℃ of water temperature lower limits.Circulating pump B1 closes when the water temperature at delivery port 27 places reaches 60 ℃ of water outlet lower limit temperatures, stops forced circulation.
C, when the water level of storage tank is lower than 1/5 water level, water supply electromagnetic valve D1 opens, heat collector is storage tank 17 moisturizings, when the water level of storage tank 17 reached the energy-conservation water level of storage tank liquid level 16, water supply electromagnetic valve D1 closed.
D, when the liquid level Y2 of potable water tank 12 is lower than 9 ' time of potable water tank lowest water level liquid level, potable water tank magnetic valve D7 opens, storage tank 17 is to potable water tank 12 beginning moisturizings, when Y2 reached peak level liquid level 9, potable water tank magnetic valve D7 closed; When potable water tank 12 water temperatures were lower than 85 ℃ of minimum water temperatures of potable water tank, electric heater 10 was opened; When the potable water tank water temperature meets or exceeds 95 ℃ of the highest water temperatures of potable water tank; Electric heater 10 cuts out, and so repeatedly, the water temperature of control potable water tank is between 85 ℃ of 95 ℃ of the highest water temperatures and minimum water temperatures; Water level obtains a certain amount of hot water capable of direct drinking between lowest water level liquid level and peak level liquid level.
When the system of detecting is in the non-working time, potable water tank cooling-water temperature sensor, potable water tank liquid level sensor are out of service.
Timing time when the system of arrival; Then system gets into automatic hull-borne: heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 open in the control system; All electric control element dead electricity except that heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 quit work simultaneously.Arrive the emptying duration of default, system evacuation water, system returns to " duty ".
Embodiment 2
The water outlet ceiling temperature is 70 ℃, and the water outlet lower limit temperature is 55 ℃.
Among the D, when the liquid level Y2 of potable water tank 12 is lower than potable water tank lowest water level liquid level 9 ' and/or potable water tank 12 water temperatures when being lower than 45 ℃ of minimum water temperatures of potable water tank, electric heater 10 is opened; When potable water tank water temperature T 3 was lower than 45 ℃ of minimum water temperatures of potable water tank, then potable water tank magnetic valve D7 opened, and T3 reaches 48 ℃ of the highest water temperatures of potable water tank, and then potable water tank magnetic valve D7 closes, and mixed water solenoid valve D6 and opened, and in potable water tank, added cold water; When T3 is lower than 45 ℃ of the minimum water temperatures of potable water tank, mix water solenoid valve D6 and close, potable water tank magnetic valve D7 opens; When the potable water tank water temperature meets or exceeds 45 ℃ of the highest water temperatures of potable water tank and potable water tank water level when reaching peak level liquid level 9; Electric heater 10 cuts out; Water filling in potable water tank so repeatedly, and the water temperature T 3 of control potable water tank is between 45 ℃-48 ℃ makes the low-temperature water heating that can be used for washing dish etc.
All the other are with embodiment 1.
Embodiment 3
The water outlet ceiling temperature is 75 ℃, and the water outlet lower limit temperature is 60 ℃, and all the other are with embodiment 1.
Embodiment 4
The water outlet ceiling temperature is 80 ℃, and the water outlet lower limit temperature is 58 ℃, 50 ℃ of the highest water temperatures of potable water tank, and 40 ℃ of the minimum water temperatures of potable water tank, all the other are with embodiment 2.
The water outlet ceiling temperature is 68 ℃, and the water outlet lower limit temperature is 53 ℃, 55 ℃ of the highest water temperatures of potable water tank, and 43 ℃ of the minimum water temperatures of potable water tank, all the other are with embodiment 2.
Claims (17)
1. a solar energy drinkable water preparation system comprises collecting system, water storage system, water system and electric-control system, it is characterized in that,
Described collecting system: by metal-glass vacuum tube type solar thermal collector (26) and be arranged on the heat collector cooling-water temperature sensor (28) that said heat collector delivery port (27) locates and form; The water inlet of said heat collector is arranged on the lower end of heat collector; And be connected with feed pipe (32); Described delivery port (27) is arranged on the upper end of said heat collector (26), and described feed pipe (32) is provided with water supply electromagnetic valve D1;
Described water storage system: be made up of storage tank (17), storage tank cooling-water temperature sensor (18), storage tank liquid level detector (4), said storage tank liquid level detector (4) is minimum can discern storage tank lowest water level liquid level (15), the energy-conservation water level liquid level of storage tank (16);
Described water system: be made up of potable water tank (12), potable water tank cooling-water temperature sensor (11), potable water tank liquid level detector (7), said potable water tank liquid level detector (7) is minimum can discern potable water tank lowest water level liquid level (15) and potable water tank peak level liquid level (16);
The delivery port of said heat collector (27) is communicated with said storage tank (17) pipe through storage tank feed pipe (30); Said storage tank (17) is communicated with through potable water tank feed pipe (13) pipe with said potable water tank (12), and described feed pipe (13) is provided with potable water tank magnetic valve D7;
By described electric-control system collection with handle the signal of telecommunication of said heat collector cooling-water temperature sensor (28), said storage tank liquid level detector (4), and control the open and close of said water supply electromagnetic valve D1 according to the said signal of telecommunication;
By described electric-control system collection with handle the signal of telecommunication of described potable water tank cooling-water temperature sensor (11), potable water tank liquid level detector (7), and control the open and close of described potable water tank magnetic valve D7 and assistant heating according to the described signal of telecommunication;
Described storage tank and said potable water tank are provided with aseptic air interchanger.
2. a kind of solar energy drinkable water preparation system as claimed in claim 1; It is characterized in that: said solar energy drinkable water preparation system also is provided with the heat exchange cooling system; Described heat exchange cooling system is communicated with and is formed by fan radiator (20), circulating pump B1 pipe serial connection; Said heat exchange cooling system pipe is communicated with described heat collector and described storage tank; Described storage tank liquid level detector (4) can also be discerned storage tank full-water level liquid level (5), said electric-control system collection and handle the signal of telecommunication of said storage tank cooling-water temperature sensor (18), said heat collector cooling-water temperature sensor, said storage tank liquid level detector, and controls the open and close of said fan radiator (20), said circulating pump B1 according to the described signal of telecommunication.
3. a kind of solar energy drinkable water preparation system as claimed in claim 1; It is characterized in that: also be provided with the timing drainage system; Described timing drainage system by timer, be arranged on heat collector electromagnetism exhaust-valve D3 on the heat collector (26), be arranged on the storage tank electromagnetism exhaust-valve D4 on the storage tank, the potable water tank electromagnetism exhaust-valve D5 that is arranged on the potable water tank forms; Said electric-control system collection and handle the signal of telecommunication of said timer, and control said electromagnetism exhaust-valve D3, D4, D5 according to the described signal of telecommunication and open and close by described electric control system controls respectively.
4. a kind of solar energy drinkable water preparation system as claimed in claim 1, it is characterized in that: said storage tank is higher than said potable water tank setting, and the energy-conservation water level liquid level (16) of said storage tank is higher than the peak level liquid level (9) of said potable water tank.
5. a kind of solar energy drinkable water preparation system as claimed in claim 1 is characterized in that: described aseptic air interchanger is made up of the potable water tank filtration breather valve (8) that is arranged on the storage tank filtration breather valve (3) on the said storage tank and be arranged on the said potable water tank.
6. a kind of solar energy drinkable water preparation system as claimed in claim 1; It is characterized in that: described aseptic air interchanger is made up of the storage tank filtration breather valve (3) and the air communication pipe that are arranged on the said storage tank; Be communicated with the top of said potable water tank by an end of said air communication pipe, the other end is communicated with the above storage tank inner chamber of said storage tank full-water level liquid level (5).
7. like the described a kind of solar energy drinkable water preparation system of one of claim 1-6 each item; It is characterized in that: described feed pipe (32) and described potable water tank (12) are communicated with through mixing water pipe (1) pipe, and described mixed water pipe (1) and described feed pipe be communicated with the position between the water supply end of described water supply electromagnetic valve D1 and described feed pipe.
8. like the described a kind of solar energy drinkable water preparation system of one of claim 1-6 each item, it is characterized in that: the water supply end of described feed pipe is provided with three grades of filter for molten (31), and described storage tank feed pipe is provided with and filters breather valve (3).
9. method of utilizing solar energy drinkable water preparation system to prepare drinkable water is characterized in that: adopt like the described solar energy drinkable water preparation system of one of claim 1-8 each item, prepare by following operational module:
(1) preparation: system is placed " duty "; Detect by the water temperature of described heat collector cooling-water temperature sensor described heat collector; Detect by the water temperature of described storage tank cooling-water temperature sensor described storage tank; Detect by the water temperature of described potable water tank cooling-water temperature sensor described potable water tank; Detect by the water level of described storage tank liquid level detector said storage tank; Detect by the water level of described potable water tank liquid level detector described potable water tank; Described heat collector cooling-water temperature sensor, storage tank cooling-water temperature sensor, potable water tank cooling-water temperature sensor, storage tank liquid level detector, potable water tank liquid level detector pass to described electric-control system with detected signal, by described electric-control system described signal are handled, and control the open and close of described water supply electromagnetic valve D1, described potable water tank magnetic valve D7, described auxiliary heater; Feed pipe is supplied water in heat collector by the heat collector lower end;
(2) said heat collector prepares the water of certain water temperature and supplies with said storage tank: when the water temperature of heat collector reaches the water outlet ceiling temperature; Supply water to storage tank by heat collector; When the water level of reducing to water outlet lower limit temperature and/or storage tank when the water temperature of heat collector reached storage tank full-water level liquid level (5), heat collector stopped to supply water to storage tank; Described water outlet ceiling temperature is lower than the easy fouling temperature of water;
(3) water of control storage tank is between energy-conservation water level and lowest water level: when the water level of storage tank is lower than storage tank lowest water level liquid level (15); Heat collector is storage tank (17) moisturizing; When the water level of storage tank (17) reached the energy-conservation water level liquid level of storage tank (16), heat collector stopped to the storage tank moisturizing;
(4), supply water to potable water tank; Potable water tank obtains the water of certain water level certain water temperature; Supply the user to use: when the liquid level of potable water tank is lower than potable water tank lowest water level liquid level (9 '); To potable water tank (12) moisturizing, when the liquid level of potable water tank (12) reaches peak level liquid level (9), stop to the potable water tank moisturizing; When potable water tank (12) water temperature was lower than the minimum water temperature of potable water tank, auxiliary heater was opened; When the potable water tank water temperature meets or exceeds potable water tank during high water temperature, auxiliary heater cuts out.
10. method as claimed in claim 9 is characterized in that: in the described module (two), when the water temperature of heat collector reaches on the water temperature in limited time; Circulating pump B1 opens, and forces water in described heat collector and described storage tank, to circulate, when the water temperature of described storage tank during more than or equal to 80 ℃-85 ℃; Fan radiator (20) is opened, and the water of forced circulation is dispelled the heat, when the water temperature of storage tank is reduced to the water outlet ceiling temperature of heat collector; Fan radiator (20) cuts out, and stops heat radiation; When the water temperature at heat collector delivery port place dropped to the water outlet lower limit temperature, circulation pump stopped to force the water circulation.
11. method as claimed in claim 9; It is characterized in that: in the described module (four); Accomplish described to potable water tank (12) moisturizing as follows: potable water tank magnetic valve D7 opens; Storage tank (17) is to potable water tank (12) moisturizing, and when the potable water tank water level reached peak level liquid level (9), potable water tank magnetic valve D7 closed.
12. method as claimed in claim 11 is characterized in that: the highest water temperature of described potable water tank is 90 ℃-95 ℃, and the minimum water temperature of described potable water tank is 80 ℃-85 ℃.
13. method as claimed in claim 9 is characterized in that: in the described module (four), accomplish described to potable water tank (12) moisturizing and control the water temperature of potable water tank as follows:
When the potable water tank water level is lower than potable water tank lowest water level liquid level and/or potable water tank water temperature T 3 and is lower than the minimum water temperature of potable water tank; Auxiliary heater 10 is opened; When water level reaches the highest liquid level and potable water tank water temperature more than or equal to said potable water tank during high water temperature, auxiliary heater 10 cuts out;
When potable water tank water temperature T 3 was lower than the minimum water temperature of potable water tank, potable water tank magnetic valve D7 opened, and mixed water solenoid valve D6 and closed at this moment; When potable water tank water temperature T 3 reached the highest water temperature of potable water tank, potable water tank magnetic valve D7 closed, and mixed water solenoid valve D6 and opened, and in potable water tank (12), added cold water;
When potable water tank liquid level Y2 reached potable water tank peak level liquid level (9), mixed water solenoid valve D6, potable water tank magnetic valve D7 all closed.
14. method as claimed in claim 13 is characterized in that: the highest water temperature of described potable water tank is 48 ℃-55 ℃, and the minimum water temperature of described potable water tank is 40 ℃-45 ℃.
15. method as claimed in claim 9; It is characterized in that: carry out timing, arrive described timing time when system by described timer; The said control unlatching heat collector emptying solenoid valve D3 of system, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5; All electric control element dead electricity except that heat collector emptying solenoid valve D3, storage tank emptying solenoid valve D4, potable water tank emptying solenoid valve D5 simultaneously; Quit work, behind the emptying duration of system, system returns to " duty ".
16. like claim 9 or 10 described methods, it is characterized in that: described water outlet ceiling temperature is 65 ℃-85 ℃, and the water outlet lower limit temperature is 50 ℃-60 ℃.
17. method as claimed in claim 9 is characterized in that: the water temperature of described heat collector is the water temperature that described delivery port (27) is located.
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