Summary of the invention
Technical problem to be solved by this invention is, makes full use of regenerative resource, and a kind of air-conditioning system of preferentially utilizing solar energy, natural cold-energy and low ebb electricity to carry out accumulation of energy is provided.
In order to address the above problem technical scheme of the present invention is such:
Natural cold-energy is meant " in the normal temperature environment, the low temperature difference low temperature heat energy that exists naturally ".This energy is a kind of potential a large amount of low-grade energies.For example, can pass through day and night temperature summer, gathers natural cold-energy at night, is stored in the phase-change material, supplies cold energy by day, reduces unit load, plays the effect of energy-saving and emission-reduction.
Solar energy is the energy of solar interior nuclear fusion reaction process generation continuously.The sun shines tellurian energy and be equivalent to 5,000,000 tons of coals each second.
The present invention can preferentially use above-mentioned regenerative resource aspect the energy, the natural cold-energy that promptly summer, day and night temperature produced and winter solar can energy storage, secondly are the electric energy storage of low ebb of selecting country to vigorously advocate, adopts on ordinary days electricity price to carry out energy supplement at last.
Energy-conservation two warm air-conditioning systems of a kind of solar energy, natural cold-energy and low ebb electric coupling; Said air-conditioning system comprises source pump, first heat exchanger, second heat exchanger, solar heat-collection plate, blower fan, evaporative air cooler, phase-changing energy-storing device, temperature sensing device, signal pickup assembly and controller; Said source pump is connected with first heat exchanger; Said first heat exchanger is connected with second heat exchanger through pipeline; Be connected with solar heat-collection plate and blower fan on said second heat exchanger, said second heat exchanger is connected with evaporative air cooler through pipeline, it is characterized in that; Said evaporative air cooler connects a phase-changing energy-storing device through pipeline, and said phase-changing energy-storing device connects user side through pipeline; The gateway of said phase-changing energy-storing device all is connected with temperature sensing device, and said temperature sensing device is connected with signal pickup assembly, and said signal pickup assembly is connected with controller;
Said phase-changing energy-storing device also is connected with first heat exchanger through pipeline, and said phase-changing energy-storing device is connected with second heat exchanger through pipeline.
Said pipeline is provided with the Electric air valve that control air flows to.
Said phase-changing energy-storing device is two temp phase-change energy-accumulating devices, comprises natural cold-energy cold-storage part and solar heat-preservation part.
Said natural cold-energy is the day and night temperature in summer.
Packing material in the said pair of temp phase-change energy-accumulating device is divided into high temperature phase change material (pcm) and low-temperature phase-change material, by mass percentage, said high temperature phase change material (pcm) consist of 93.5%CaCl
26H
2O+1.9%SrCl
26H
2The O+4.6% sodium carboxymethylcellulose, low-temperature phase-change material consist of 45% certain herbaceous plants with big flowers acid+55% laurate.
This system is measured temperature of inlet air, outlet temperature and the wind pushing temperature of phase-changing energy-storing device through temperature sensor; Feed back to the control system; The control system compares according to the signal value that configures in advance; Control system output action signal, the unlatching of valve and the start and stop of equipment between each pipeline of control air-conditioning system.
Said air-conditioning system comprises following operational mode:
Solar heat-preservation pattern, PCM heat release pattern, source pump heat supply accumulation of heat united mode, source pump heat supply combined solar accumulation of heat pattern, natural cold-energy cold-storage pattern, PCM are put cold pattern, source pump cooling associating phase change cold-storage pattern, source pump cold-storage pattern.
These energy-conservation two warm air-conditioning systems realize energy-saving run throughout the year through different running mode.
Beneficial effect; It is after taking all factors into consideration the characteristics of power save mode, to arise at the historic moment that the present invention utilizes energy-conservation two warm air-conditioning systems of solar energy, natural cold-energy and low ebb electric coupling; Compare with existing air-conditioning and structurally to have increased phase-changing energy-storing part (summer natural cooling source cold-storage part; Winter solar ability accumulation of heat part), realized that indoor thermal environment relies on natural cooling source and source pump cooling in summer, relies on solar energy and source pump heat supply winter; Transition season also can make full use of renewable energy solar energy and natural cooling source according to the form that require different choice natural cooling source cooling or solar-heating of individual to comfort level.
In addition, also can combine the tou power price policy of power system, utilize energy storage system in the lower period of the electricity charge, energy to be stored, the period big in the air-conditioning system demand, that the electricity charge are higher discharges this part energy, and natural energy resources is replenished.Owing to use natural energy resources, practice thrift operating cost in a large number, add the utilization of low ebb electricity, the operating cost of air-conditioning is declined to a great extent.
Not only can reduce the investment of new power plant construction; Improve the utilization rate of existing generating equipment and power transmission and transforming equipment; Can reduce simultaneously the environmental pollution that the energy uses (particularly for thermal power generation) to cause; Practicing thrift limited non-renewable resources, help the ecological balance, is a doulbe-sides' victory measure of benefiting the nation and the people.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1; Energy-conservation two warm air-conditioning systems of a kind of solar energy of the present invention, natural cold-energy and low ebb electric coupling; Said air-conditioning system comprises source pump 1, first heat exchanger 2, solar heat-collection plate 3, second heat exchanger 4, blower fan 5, evaporative air cooler 6, phase-changing energy-storing device, temperature sensing device, signal pickup assembly 9 and controller 10; Said source pump 1 is connected with first heat exchanger 2; Said first heat exchanger 2 is connected with second heat exchanger 4 through pipeline, is connected with solar heat-collection plate 3 and blower fan 5 on said second heat exchanger 4, and said second heat exchanger 4 is connected with evaporative air cooler 6 through pipeline; Said evaporative air cooler 6 connects a phase-changing energy-storing device through pipeline, and said phase-changing energy-storing device connects user side through pipeline; The gateway of said phase-changing energy-storing device all is connected with temperature sensing device, and said temperature sensing device is connected with signal pickup assembly 9, and said signal pickup assembly 9 is connected with controller 10;
Said phase-changing energy-storing device also is connected with first heat exchanger 2 through pipeline, and said phase-changing energy-storing device is connected with second heat exchanger 4 through pipeline.
This system is measured temperature of inlet air, outlet temperature and the wind pushing temperature of phase-changing energy-storing device through temperature sensor; Feed back to the control system; The control system compares according to the signal value that configures in advance; Controller output action signal, the unlatching of valve and the start and stop of equipment between each pipeline of control air-conditioning system.
Said pipeline is provided with the Electric air valve 11 that control air flows to.
In the present embodiment, what the phase-changing energy-storing device adopted is two temp phase-change energy-accumulating devices 7, and what temperature sensing device adopted is temperature sensor 8.
The system accumulator adopts 6 pairs of temp phase-change energy-accumulating devices, and is different from according to the flow through direction of accumulator of air during operation in accumulator, adding the phase-change material of different melting points, realized the cascade utilization of energy.
The air of the higher temperature high temperature phase change material (pcm) of flowing through earlier in the heat-accumulating process after reducing with its generation heat exchange temperature, passes through low-temperature phase-change material, with its generation heat exchange again.
The air of the lower temperature low-temperature phase-change material of flowing through earlier in the exothermic process after raising with its generation heat exchange temperature, passes through high temperature phase change material (pcm), with its generation heat exchange again.
The air of the lower temperature low-temperature phase-change material of flowing through earlier in the process of cool after raising with its generation heat exchange temperature, passes through high temperature phase change material (pcm), with its generation heat exchange again.
The air of the higher temperature high temperature phase change material (pcm) of flowing through earlier in the discharging cold course after reducing with its generation heat exchange temperature, passes through low-temperature phase-change material, with its generation heat exchange again.
Make heat transfer temperature difference increase through the phase-change material that in accumulator, adds different melting points, effectively utilized the energy of different temperatures gradient, improved energy utilization ratio, realized the cascade utilization of energy.
Said air-conditioning system comprises following operational mode:
1>winter main operational mode
The solar heat-preservation pattern:
The solar heat-preservation pattern is opened; Solar heat-collection plate absorbs heat, passes to hot-air through built-in heat transfer medium, and hot-air is successively through high temperature PCM, low temperature PCM accumulation of heat; Valve F7, F8, F13, F14, F16, F17, F20, F21 open at this moment, and the accumulation of heat pattern is opened.
PCM heat release pattern:
Air passes through low temperature PCM and high temperature PCM successively, the PCM phase transformation release heat of thawing, and source pump is not moved this moment, and F1, F2, F5, F6, F7, F10, F12, F13, F14, F16, F18 open at this moment.Only when wind pushing temperature was lower than set-point, source pump was opened auxiliary heat supplying.
Source pump heat supply accumulation of heat united mode:
Heat supply in winter season, if when night, air conditioner load was higher, low ebb capable of using is established by cable and is opened the source pump heating mode, and a hot-air part is successively through high temperature PCM (phase-change material) and low temperature PCM energy storage, and another part gets into air-conditioned room and regulates indoor temperature.Valve F1, F2, F3, F4, F5, F6, F7, F10, F11, F12, F13, F14, F18 open at this moment.Night air conditioner load low when need not the source pump heat supply, can open the source pump heating mode, hot-air is through high temperature PCM and the simple energy storage of low temperature PCM, this moment, valve F3, F4, F5, F6, F7, F10, F11, F12, F13, F14, F18 opened.
Source pump heat supply combined solar accumulation of heat pattern:
The solar heat-preservation pattern is opened, and solar heat-collection plate absorbs heat, passes to hot-air through the endoplasm heat transfer medium.Hot-air is successively through high temperature PCM, low temperature PCM accumulation of heat, and valve F7, F8, F13, F14, F16, F17, F20, F21 open at this moment, and the accumulation of heat pattern is opened; Source pump is opened, heat in the direct supply chamber, and valve F1, F2, F3, F4 open.
2>transition season, air-conditioning need not all the period of time and open, and open solar heat-storing device when illumination is sufficient, and the utilization night dip was opened the heat pump accumulation of heat when illumination was inadequate, and accumulation of heat is then opened PCM exoergic pattern when needs during to the room heat supply;
3>summer cooling operational mode in season
Natural cold-energy cold-storage pattern:
Fine, when day and night temperature is higher night capable of using paddy valency electricity, adopt evaporative air cooler to make air themperature further be reduced to the cold air temperature and reach about 15 ℃-20 ℃.Cold air makes it undergo phase transition the storage cold through the low low temperature PCM of phase transition temperature.Raise through the air themperature behind the low-temperature zone phase-change material, reach about about 23 ℃-25 ℃.And then the higher high temperature section phase-change material of process phase transition temperature further stores cold.F11, F12, F13, F14, F15, F17, F18, F19, F21 open at this moment, and evaporative air cooler is opened.
PCM is put cold pattern:
Earlier discharge cold PCM in need be in the room provides the period of cold wind daytime, and return air is lowered the temperature through high temperature PCM earlier in this moment room; Pass through low temperature PCM then; Deliver to air-conditioned room, form a loop, F1, F2, F5, F6, F9, F10, F11, F13, F14 open at this moment.When wind pushing temperature was lower than setting value, refrigeration unit was opened; The cold that refrigeration unit produces hour can a part be delivered to air-conditioned room when room load, and a part is used for the PCM cold-storage, and this moment, cold wind infeeded air-conditioned room fully when indoor load is higher with reference to source pump cooling associating phase change cold-storage pattern.
Source pump cooling associating phase change cold-storage pattern:
Utilize low ebb to establish by cable and open the source pump refrigeration mode, a cold air part is successively through low temperature PCM and high temperature PCM energy storage, and another part gets into air-conditioned room and regulates indoor temperature.Valve F1, F2, F3, F4, F5, F6, F9, F10, F11, F13, F14 open at this moment.The source pump refrigeration mode is opened.
Source pump cold-storage pattern:
When need not cooling night, can open the source pump refrigeration mode, cold air is through low temperature PCM and the simple energy storage of high temperature PCM.Valve F3, F4, F5, F6, F9, F10, F11, F13, F14 open at this moment.The source pump refrigeration mode is opened.
Signal pickup assembly receives the temperature signal of temperature sensor and setting; Under the environment different condition, pass through the start and stop of controller control Electric air valve, source pump, first heat exchanger, second heat exchanger, solar heat-collection plate, blower fan and evaporative air cooler etc., thereby realize the switching of each pattern of unit.
The operational mode of the energy-saving air conditioning system of solar energy, natural cold-energy and low ebb electric coupling has been considered different time, different weather condition, different chamber's internal loading requirement respectively, can also regulate according to actual conditions in addition.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.