CN202869078U - Solar auxiliary ground-source heat pump system - Google Patents
Solar auxiliary ground-source heat pump system Download PDFInfo
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- CN202869078U CN202869078U CN 201220411659 CN201220411659U CN202869078U CN 202869078 U CN202869078 U CN 202869078U CN 201220411659 CN201220411659 CN 201220411659 CN 201220411659 U CN201220411659 U CN 201220411659U CN 202869078 U CN202869078 U CN 202869078U
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Abstract
The utility model provides a solar auxiliary ground-source heat pump system which comprises a load heat exchange assembly, an underground heat exchange assembly, a solar heat exchange assembly, a heat pump, a changing-over trigger device and a pipeline changing-over device. The changing-over trigger device is used for monitoring whether a changing-over trigger condition emerges or not. The pipeline changing-over device is arranged on a connecting pipeline of the load heat exchange assembly, the underground heat exchange assembly, the solar heat exchange assembly and the heat pump, and is used for changing over connection relations among a pipeline of the load heat exchange assembly, the underground heat exchange assembly, the solar heat exchange assembly and the heat pump according to different triggering conditions monitored by the changing-over trigger device. According to the solar auxiliary ground-source heat pump system, due to the fact the connection relations among the solar heat exchange assembly, the heat pump, the underground heat exchange assembly and the load heat exchange assembly are changed over according to different triggering conditions, auxiliary function of solar energy to underground heat energy can be flexibly controlled, and optimizing balance can be reached between invested cost of solar auxiliary ground-source heat pump system and utilization efficiency.
Description
Technical field
The utility model relates to the heat pump structure technology, relates in particular to a kind of solar energy assisted ground source heat pump.
Background technology
Earth-source hot-pump system is to utilize the underground heat of Rock And Soil, underground water or surface water as the heat-exchange system of thermal source by underground buried tube.About the downward 30-130 rice in earth's surface, temperature throughout the year is relatively constant, generally about 16-20 ℃.Earth-source hot-pump system formally utilizes ground this characteristic of energy, by inputting a small amount of electric energy, maximally utilise ground temperature, being implemented in winter, underground heat energy is taken out, is indoor heating behind the process heat pump heat exchanging, in summer, underground cold energy is taken out, through supplying indoor refrigeration behind the heat pump heat exchanging, simultaneously heat energy is discharged into underground.It is central air-conditioning that earth-source hot-pump system is typically used.
Earth-source hot-pump system is run duration in the winter time, because the caloric receptivity of underground heat exchanger mainly relies on buried tube heat exchanger inner fluid (water or anti-icing fluid) and the heat exchange between the solid dielectric on every side, the underground buried tube ambient temperature reduces simultaneously.According to heat accumulative total effect, for satisfying the caloric receptivity of heat pump continuous heat supply, the pipe laying surrounding medium must be in the situation of the unfavorable heat exchange of low temperature.
The inventor finds in the process of studying, and can exist this kind caloric receptivity and heat exhaust uneven in the prior art, and it is excessive to cause cost to drop into, or the underground buried tube surrounding medium is in the defective of the unfavorable heat exchange of low temperature.Below be illustrated by example:
For about 9000 square meters of overall floorage, wherein underground area is about 367 square meters, about 8633 square meters of superstructure area, and major function is office, the project of lobby and storehouse.Adopt earth source heat pump+solar energy heating combining form as system's Cooling and Heat Source in this project, 2 screw rod type heat pump machine unit are set.Administrative Area adopts primary air fan-coil system (7/12 ℃ of chilled water supply and return water temperature) summer, adopts ground radiation heating system (behind radiator, 45/40 ℃ of hot water supply and return water temperature) winter; Summer do not established air-conditioning by storehouse, adopts radial pattern radiator heating system (50/45 ℃ of hot water supply and return water temperature) winter, guarantees heating temperature on duty.Terminal radiator system and radiant floor heating system series operation are to strengthen the supply backwater temperature difference of system.Well-digging quantity is 70 mouthfuls, and average well depth is 100 meters.
Estimation Pekinese climatic characteristic is as shown in table 1 below:
Table 1
| The summer air-conditioning outdoor calculate temperature | 33.2℃ |
| The outdoor calculating wet-bulb temperature of summer air-conditioning | 26.4℃ |
| Summer committee's air conditioning chamber's separate |
30℃ |
| The winter air-conditioning outdoor calculate temperature | －12℃ |
| The winter heating outdoor calculate temperature | －9℃ |
| Outdoor design temperature for winter vemtilation | －5℃ |
| Outdoor wind speed | Summer average 1.9m/s; Winter average 2.8m/s |
| Atmospheric pressure | Summer 998.6hPa; Winter 1020.4hPa |
When the cold finger mark of building is got 35w/m
2, the heating index of building is got 45w/m
2Then winter, maximum heating load was 405kW, and summer, the maximum cold load was 315kW.Modular design in summer in winter daily load distribution table is as shown in Table 2 below:
Table 2
The peripheral structure function admirable of this project building has reached the standard of energy saving building, and cooling and heating load that therefore should building is lower.Through calculating as can be known by time load, under the design conditions condition, Heating Season by the time thermic load total value be 500074kWh, refrigeration season hourly cooling load total value is 293816kWh, the thermic load total value is greater than the refrigeration duty total value.If under design conditions, adopt separately earth-source hot-pump system, certainly exist caloric receptivity and the unbalanced problem of heat exhaust extreme, so, the long-time running result can make the soil moisture more and more lower, also will reduce the operational efficiency of heat pump, and finally cause the winter earth-source hot-pump system normally not move.But we should be taken into account that also practical operation situation is not to move according to design conditions fully simultaneously, consider that actual heat supply in winter area is very likely less than design conditions, summer in winter cooling and heating load unbalance factor finally can appear less than 20%, thereby the ground source is realized homeostasis between heat release amount and caloric receptivity according to the regulating power of self.Certainly for balance between the annual Total amount of heat release of long-range realization and its total caloric receptivity, simultaneously in order better to improve the operational efficiency of earth-source hot-pump system, the phenomenon that especially the lasting reduction of the regional Rock And Soil temperature of underground pipe causes the water source heat pump units coefficient of performance in heating to reduce when solution real-time continuous heating operation in winter.
Buried pipe ground-source heat pump system is compared with conventional system, increased the investment of underground pipe heat exchanging part, and ratio between investments is larger.In order to improve the comprehensive benefit of earth-source hot-pump system, or owing to limited by objective condition, when the underground pipe low level heat energy can not satisfy heat supply or cooling requirement, usually adopt Hybrid Ground-source Heat Pump Systems, the mode that namely adopts auxiliary Cooling and Heat Source to combine with earth-source hot-pump system.Under the prerequisite of the annual Total amount of heat release of balance and total caloric receptivity, be conducive to reduce the buried pipe heat exchange system scale, thereby reduce buried pipe heat exchange system initial cost and operating cost.
By engineering in the past, northern area is that the mode with the boiler room auxiliary heating remedies mostly, but considers that from economic aspect the boiler room is that an additional funding drops into sizable heating system.And air-cooled heat pump was difficult to get a desired effect in the winter of northern severe cold.Solar energy is a kind of regenerative resource of cleaning, and the incomparable superiority of conventional fossil fuel is arranged, and is the comparatively desirable auxiliary thermal source of earth-source hot-pump system.
Amid all these factors and to the location of above-mentioned engineering energy-saving building, prior art has proposed to adopt solar energy to remedy heat exhaust and the unbalanced problem of caloric receptivity that earth source heat pump causes behind the heat-obtaining from soil, but existing solar energy assisted ground source heat pump techniques, it is auxiliary to carry out heat exchange according to running situation, so the entire system operating efficiency is not high.
The utility model content
The utility model provides a kind of solar energy assisted ground source heat pump, so that system reaches the effect of energy-saving and environmental protection, economy.
The utility model provides a kind of solar energy assisted ground source heat pump, comprises that load heat exchange composition, underground heat exchange form, solar heat-exchange forms and heat pump, wherein, also comprises:
The handover trigger device is used for monitoring and whether produces handover triggering condition;
Pipeline reversing service, be arranged in the connecting line of load heat exchange composition, underground heat exchange composition, solar heat-exchange composition and heat pump the pipeline annexation between trigger condition switch load heat exchange composition, underground heat exchange composition, solar heat-exchange composition and the heat pump that is used for arriving according to the handover trigger device monitoring.
Above-mentioned solar energy assisted ground source heat pump, preferably, described pipeline reversing service comprises changeover module and triggering assembly, wherein:
Described changeover module comprises:
The first switch unit is connected among the heat release loop of heat supplying loop that solar heat-exchange forms and load heat exchange composition;
Among the second switch unit, the condenser circuit that is connected on heat supplying loop that solar heat-exchange forms, heat pump and the loop of load heat exchange composition;
The 3rd switch unit is connected among the loop that the condenser circuit of heat pump and load heat exchange form;
The 4th switch unit is connected among heat supplying loop, pipe laying heat supplying loop and the evaporator with heat pump loop of solar heat-exchange composition;
The 5th switch unit is connected among pipe laying heat supplying loop and the evaporator with heat pump loop;
The 6th switch unit is connected among the heat supplying loop and evaporator with heat pump hot loop of solar heat-exchange composition;
Described triggering assembly comprises any one of following trigger element or makes up:
The solar heating trigger element is used for controlling the first switch unit conducting, other switch units disconnections during to the solar heating trigger condition at described handover trigger device monitoring;
Condenser series connection trigger element is used for controlling the second switch unit and the 5th switch unit conducting at described handover trigger device monitoring when condenser is connected trigger condition, and other switch units disconnect;
Pipe laying triggered unit is used for controlling the 3rd switch unit and the 4th switch unit conducting, other switch units disconnections during to pipe laying triggered condition at described handover trigger device monitoring;
The solar-heating trigger element is used for controlling the 3rd switch unit and the 6th switch unit conducting, other switch units disconnections during to the solar-heating trigger condition at described handover trigger device monitoring;
Pipe laying heat supply trigger element is used for controlling the 3rd switch unit and the 5th switch unit conducting, other switch units disconnections during to pipe laying heat supply trigger condition at described handover trigger device monitoring.
Above-mentioned solar energy assisted ground source heat pump, preferably, described changeover module comprises:
The first valve, the first end and the load heat exchange that are connected to solar heat-exchange composition heat supplying loop form between second end in heat release loop;
The second valve, the second end and the load heat exchange that are connected to solar heat-exchange composition heat supplying loop form between the first end in heat release loop;
The 3rd valve is connected to the tie point that the first valve and load heat exchange form second end in heat release loop, and between condenser circuit the second end;
The 4th valve is connected to the condenser circuit first end, forms between the tie point of first end in heat release loop with the second valve and load heat exchange;
The 5th valve is connected between second end and evaporimeter loop first end of pipe laying heat supplying loop;
The 6th valve is connected between the second end of evaporimeter loop first end and solar heat-exchange composition heat supplying loop;
The 7th valve, the second end and the solar heat-exchange that are connected to the pipe laying heat supplying loop form between the first end of heat supplying loop;
The 8th valve, the first end and the solar heat-exchange that are connected to the pipe laying heat supplying loop form between the first end of heat supplying loop, and wherein, the first end of pipe laying heat supplying loop is connected with second end in evaporimeter loop;
Wherein, described the first valve and the second valve form described the first switch unit; Described the second valve, the 3rd valve and the 9th valve form described the second switch unit; Described the 3rd valve and the 4th valve form described the 3rd switch unit; Described the 6th valve and the 7th valve form described the 4th switch unit; The 5th valve forms described the 5th switch unit; Described the 6th valve and the 8th valve form described the 6th switch unit.
Above-mentioned solar energy assisted ground source heat pump preferably, also comprises:
The first water pump is arranged between second end in the first end of pipe laying heat supplying loop and evaporimeter loop;
The second water pump is arranged in the heat release loop of described load heat exchange composition.
Above-mentioned solar energy assisted ground source heat pump, preferably:
Described solar heat-exchange forms the thermal-arrest loop of the heat release section formation that comprises solar thermal collector, the 3rd water pump, water tank, the 4th water pump and plate type heat exchanger, and the heat supplying loop of the endotherm section of plate type heat exchanger formation;
Described load heat exchange forms and comprises fan coil, radiator and/or flooring radiation device, and the heat release loop of the second water pump formation.
Above-mentioned solar energy assisted ground source heat pump, preferably:
Described handover trigger device is temperature sensor, and the supply water temperature that forms for detection of solar heat-exchange is as trigger condition;
Wherein, described solar heating trigger condition, condenser series connection trigger condition, pipe laying triggered condition, solar-heating trigger condition and pipe laying heat supply trigger condition are respectively temperature threshold values.
Above-mentioned solar energy assisted ground source heat pump, preferably:
The solar heating trigger condition is for being higher than 50 ℃;
Condenser series connection trigger condition is not for being higher than 50 ℃ and be higher than 40 ℃;
Pipe laying triggered condition is not for being higher than 40 ℃ and be higher than 25 ℃;
The solar-heating trigger condition is not for being higher than 25 ℃ and be higher than 15 ℃;
Pipe laying heat supply trigger condition is not for being higher than 15 ℃.
The solar energy assisted ground source heat pump that the utility model embodiment provides, by switch the annexation between solar heat-exchange composition, heat pump, underground heat exchange composition and the load heat exchange composition according to different trigger conditions, thereby control flexibly solar energy to the booster action of underground heat energy, between the input cost of system and utilization ratio, reach Optimization Balancing.
Description of drawings
Fig. 1 is the structural representation that the load heat exchange forms among the utility model embodiment one;
Fig. 2 is the structural representation that underground heat exchange forms among the utility model embodiment one;
Fig. 3 is the structural representation that solar heat-exchange forms among the utility model embodiment one;
Fig. 4 is heat pump structure schematic diagram among the utility model embodiment one;
The structural representation of the solar energy assisted ground source heat pump that Fig. 5 provides for the utility model embodiment one;
The structural representation of the solar energy assisted ground source heat pump that Fig. 6 provides for the utility model embodiment two.
The specific embodiment
Embodiment one
The utility model embodiment one provides a kind of solar energy assisted ground source heat pump, and this system comprises load heat exchange composition 10, underground heat exchange composition 20, solar heat-exchange composition 30 and heat pump 40.This heat pump can be realized heat supply and refrigeration, can form 20 by underground heat exchange in summer and realize refrigeration, and more be applicable to use in the winter time, carries out heat supply in conjunction with underground heat energy and solar energy.
Wherein, as shown in Figure 1, the load heat exchange forms 10 can be any heat supply terminal, such as fan coil 11, radiator 12 and/or flooring radiation device 13 etc., and heat supply terminal and water pump consist of the heat release loops such as the second water pump 15, thereby obtain heat energy.Certainly, form in the load heat exchange and controlled valve 14 can be set in the 10 heat release loops carry out inner loop control.
As shown in Figure 2, underground heat exchange forms 20 can be U-shaped heat exchanger 21, i.e. underground buried tube, but it will be appreciated by those skilled in the art that, the heat exchange composition that can obtain underground heat energy is not limited to U-shaped heat exchanger 21, and any heat exchanger that can obtain underground heat energy all is suitable for the technical solution of the utility model.
Solar heat-exchange forms 30 and comprises thermal-arrest loop and heat supplying loop.The thermal-arrest loop is used for gathering solar energy, is converted to the heat energy of circulatory mediator (water or other media), and as shown in Figure 3, the thermal-arrest loop preferably is made of the heat release section of solar thermal collector 31, the 3rd water pump 32, water tank 33, the 4th water pump 34 and plate type heat exchanger 35.Heat supplying loop is made of the endotherm section of plate type heat exchanger 35, thereby provides heat energy for system.Certainly, it will be understood by those skilled in the art that the heat exchange that solar energy is provided forms structure and is not limited to this, can provide the structure of solar energy all applicable to the technical solution of the utility model.
As shown in Figure 4, heat pump 40 comprises the medium circulation loop that is made of condenser 41, evaporimeter 42, compressor and stop valve typically, and the circulation by medium is passed to heat the condenser 41 from evaporimeter 42.The evaporimeter loop of this heat pump 40 is connected with heat absorption pipeline in the source heat pump system entirely, obtains heat the medium in the evaporimeter 42 is heated.The condenser circuit of heat pump 40 is connected with heat-releasing pipeline in the source heat pump system entirely, and the heat of condenser 41 medium is conducted in the heat-releasing pipeline.
It will be understood by those skilled in the art that the circulatory mediator in each pipeline of solar energy assisted ground source heat pump can be water or other liquid mediums, rely on and flow to conduct heat.
The structural representation of the solar energy assisted ground source heat pump that Fig. 5 provides for the utility model embodiment one, the technical scheme of present embodiment forms formation one heat-exchange system based on above-mentioned each heat exchange, and is to have set up handover trigger device 51 and pipeline reversing service 52 with respect to the improvement of prior art.Wherein, handover trigger device 51 is used for monitoring and whether produces handover triggering condition; Pipeline reversing service 52, be arranged in the connecting line of load heat exchange composition 10, underground heat exchange composition 20, solar heat-exchange composition 30 and heat pump 40 the pipeline annexation between trigger condition switch load heat exchange composition 10, underground heat exchange composition 20, solar heat-exchange composition 30 and the heat pump 40 that is used for monitoring according to handover trigger device 51.
The technical scheme of present embodiment, be not to utilize solar energy to assist underground heat to carry out heat supply with changeless annexation, but the matching relationship that trigger condition control solar heat-exchange forms, underground heat exchange forms and the load heat exchange forms by setting, thereby reasonable combination solar energy and geothermal energy under different condition make system reach the effect of energy-saving and environmental protection, economy.
Embodiment two
On the basis of above-described embodiment, the preferred control structure that forms matching relationship for solar heat-exchange composition, underground heat exchange composition and load heat exchange is as follows:
This pipeline reversing service comprises changeover module and triggers assembly, and wherein: changeover module comprises six switch units, conducting and the disconnection of conducting that can be by switch unit and the variation control switch unit institute series pipe of off-state.Specifically: the first switch unit is connected among the heat release loop of heat supplying loop that solar heat-exchange forms and load heat exchange composition; Among the second switch unit, the condenser circuit that is connected on heat supplying loop that solar heat-exchange forms, heat pump and the loop of load heat exchange composition; The 3rd switch unit is connected among the loop that the condenser circuit of heat pump and load heat exchange form; The 4th switch unit is connected among heat supplying loop, pipe laying heat supplying loop and the evaporator with heat pump loop of solar heat-exchange composition; The 5th switch unit is connected among pipe laying heat supplying loop and the evaporator with heat pump loop; The 6th switch unit is connected among the heat supplying loop and evaporator with heat pump hot loop of solar heat-exchange composition.
The triggering assembly comprises any one of following trigger element or makes up, in order to make system change annexation under different conditions, reaches correspondingly heating effect:
The solar heating trigger element is used for controlling the first switch unit conducting, other switch units disconnections during to the solar heating trigger condition at described handover trigger device monitoring.At this moment, the heat supplying loop that solar heat-exchange is formed directly is communicated with the heat release loop that the load heat exchange forms, and other pipelines disconnect, by the independent and direct heat source as load of solar energy.
Condenser series connection trigger element is used for controlling the second switch unit and the 5th switch unit conducting at described handover trigger device monitoring when condenser is connected trigger condition, and other switch units disconnect.At this moment, solar energy is not directly utilized, but connects with the condenser circuit of heat pump.Pipe laying heat supplying loop and evaporimeter circuit communication are supplied with heat, connect with condenser circuit in the heat release loop that the load heat exchange forms.The heat release loop that the load heat exchange forms can directly obtain the hot water that solar heat-exchange forms to be provided on the one hand from condenser circuit, underground heat energy heats the hot water in the condenser circuit by heat pump again on the other hand, to reach required heat supply temperature.
Pipe laying triggered unit is used for controlling the 3rd switch unit and the 4th switch unit conducting, other switch units disconnections during to pipe laying triggered condition at described handover trigger device monitoring.At this moment, connecting with condenser circuit in the heat release loop that the load heat exchange forms, obtains heat energy from heat pump; The heat supplying loop that the solar energy load forms is connected with the heat supplying loop of pipe laying.So that the hot water that solar heat-exchange form to be supplied with mixes with water in the underground buried tube, thereby can improve water temperature in the pipe laying.Mixed hot water in solar energy and pipe laying energy carry out heat supply as thermal source simultaneously like this, and solar energy can also heat ground, the soil around the pipe laying the heating of water in the pipe laying, with the temperature reduction of ground or soil around the delay pipe laying.
The solar-heating trigger element is used for controlling the 3rd switch unit and the 6th switch unit conducting, other switch units disconnections during to the solar-heating trigger condition at described handover trigger device monitoring.At this moment, connecting with condenser circuit in the heat release loop that the load heat exchange forms, obtains heat energy from heat pump; The heat supplying loop that the solar energy load forms directly enters the evaporimeter loop of heat pump, as low level heat energy, does not carry out heat supply and do not recycle the underground heat exchange composition.
Pipe laying heat supply trigger element is used for controlling the 3rd switch unit and the 5th switch unit conducting, other switch units disconnections during to pipe laying heat supply trigger condition at described handover trigger device monitoring.At this moment, connecting with condenser circuit in the heat release loop that the load heat exchange forms, obtains heat energy from heat pump; Only utilize underground heat exchange to form connection evaporimeter loop and carry out heat supply, do not recycle the heat of solar energy.
Above-mentioned each trigger element all can independently use, and changes in the annexation of trigger condition control system correspondingly, consists of efficiently, heat pump flexibly.Each trigger element can be connected with the executive component of each switch unit respectively, thereby controls.Trigger element can be integrated in the control device such as single-chip microcomputer, also can have hardware logic electric circuit to consist of.
Above-mentioned each switch unit can independently arrange, and the combination with valve, pipeline and joint consists of whole system typically.In order to simplify pipeline structure, the utility model embodiment two provides preferred solar energy assisted ground source heat pump, simplifies the structure of valve, pipeline as far as possible, reduces cost, optimization control scheme.Concrete structure as shown in Figure 6.This changeover module comprises nine valves, and utilization can be adopted the analog quantity motor-driven valve.Wherein, the first valve V1 is connected to first end and the load heat exchange that solar heat-exchange forms 30 heat supplying loop and forms between second end in 10 heat release loops; The second valve V2 is connected to the second end and the load heat exchange that solar heat-exchange forms 30 heat supplying loop and forms between the first end in 10 heat release loops; The 3rd valve V3 is connected to the tie point that the first valve V1 and load heat exchange form second end in 10 heat release loops, and between condenser circuit the second end; The 4th valve V4 is connected to the condenser circuit first end, forms between the tie point of first end in 10 heat release loops with the second valve V2 and load heat exchange; The 5th valve V5 is connected between second end and evaporimeter loop first end of pipe laying heat supplying loop; The 6th valve V6 is connected between the second end that evaporimeter loop first end and solar heat-exchange form 30 heat supplying loop; The 7th valve V7, the second end and the solar heat-exchange that are connected to the pipe laying heat supplying loop form between the first end of 30 heat supplying loop; The 8th valve V8, the first end and the solar heat-exchange that are connected to the pipe laying heat supplying loop form between the first end of 30 heat supplying loop, and wherein, the first end of pipe laying heat supplying loop is connected with second end in evaporimeter loop; Wherein, described the first valve V1 and the second valve V2 form described the first switch unit; Described the second valve V2, the 3rd valve V3 and the 9th valve V9 form described the second switch unit; Described the 3rd valve V3 and the 4th valve V4 form described the 3rd switch unit; Described the 6th valve V6 and the 7th valve V7 form described the 4th switch unit; The 5th valve V5 forms described the 5th switch unit; Described the 6th valve V6 and the 8th valve V8 form described the 6th switch unit.
The first end in above-mentioned each loop and the second end identify respectively input and output.Different switch units can reuse valve wherein, thereby reaches the purpose that reduces parts.It will be understood by those skilled in the art that the water pump that arranges plays the purpose of drive medium circulation in each loop, need to according to the loop whether the demand of conducting correspondingly control the opening and closing of water pump.In the present embodiment, as shown in Figure 6, except the 3rd water pump 32 and the 4th water pump 34, also be provided with two water pumps, i.e. the first water pump 22 is arranged between second end in the first end of pipe laying heat supplying loop and evaporimeter loop; The second water pump 15 is arranged in the heat release loop of described load heat exchange composition 10.
Technical scheme for each embodiment of the utility model, trigger condition can have various ways, such as can be according to user's manual control, the variation of heat supply target temperature etc., the typical case be the foundation of considering that the heat capacity of solar energy changes as trigger condition in the present embodiment.Preferably monitor the supply water temperature Tg after the solar energy heating, this supply water temperature is the water temperature in the heat supplying loop, i.e. plate type heat exchanger heat release section during solar heat-exchange forms.Then the handover trigger device can be temperature sensor, and the supply water temperature that forms for detection of solar heat-exchange is as trigger condition; Wherein, described solar heating trigger condition, condenser series connection trigger condition, pipe laying triggered condition, solar-heating trigger condition and pipe laying heat supply trigger condition are respectively temperature threshold values.
In the use of reality, a kind of concrete technical scheme is to set the solar heating trigger condition for being higher than 50 ℃; Condenser series connection trigger condition is not for being higher than 50 ℃ and be higher than 40 ℃; Pipe laying triggered condition is not for being higher than 40 ℃ and be higher than 25 ℃; The solar-heating trigger condition is not for being higher than 25 ℃ and be higher than 15 ℃; Pipe laying heat supply trigger condition is not for being higher than 15 ℃.
Then in conjunction with above-mentioned trigger condition and solar-assisted heat pump structure shown in Figure 6, the system architecture of each operating condition is as follows:
The solar heating operating mode when supply water temperature Tg is higher than 50 ℃, is controlled the first valve V1 and the second valve V2 and is opened, and the second water pump 15, the 3rd water pump 32 and the 4th water pump 34 are opened; The the 3rd to the 9th valve V3-V9 closes, and heat pump 40 cuts out, and the first water pump 22 cuts out.
Condenser series connection operating mode when supply water temperature Tg is not higher than 50 ℃ and when being higher than 40 ℃, is controlled the second valve V2, the 3rd valve V3, the 5th valve V5 and the 9th valve V9 and is opened, and four water pumps are all opened, and heat pump 40 is opened; The first valve V1, the 4th valve V4, the 6th to the 8th valve V6-V8 close.
The pipe laying heating cycle when supply water temperature Tg is not higher than 40 ℃ and when being higher than 25 ℃, is controlled the 3rd valve V3, the 4th valve V4, the 6th valve V6 and the 7th valve V7 and is opened, and four water pumps are all opened, and heat pump 40 is opened; The first valve V1, the second valve V2, the 5th valve V5, the 8th valve V8 and the 9th valve V9 close.
The solar-heating operating mode when supply water temperature Tg is not higher than 25 ℃ and when being higher than 15 ℃, is controlled the 3rd valve V3, the 4th valve V4, the 6th valve V6 and the 8th valve V8 and is opened, and four water pumps are all opened, and heat pump 40 is opened; The first valve V1, the second valve V2, the 5th valve V5, the 7th valve V7 and the 9th valve V9 close.
Pipe laying, is controlled the 3rd valve V3, the 4th valve V4 and the 5th valve V5 and is opened when supply water temperature Tg is not higher than 15 ℃ for thermal condition, and the first water pump 22 and the second water pump 15 are all opened, and heat pump 40 is opened; The first valve V1, the second valve V2, the 6th to the 9th valve V6-V9 close, and the 3rd water pump 32 and the 4th water pump 34 are closed.
In the present embodiment technical scheme, Cooling and Heat Source adopts earth source heat pump and solar energy heating combining form.Summer can be all with earth-source hot-pump system form cooling; Heat supply in winter is take earth source heat pump as main, and solar-heating is auxiliary heat supply mode.Such scheme can effectively solve heat pump, and system cost that cause drops into unreasonable problem with the heat exhaust in summer is uneven with caloric receptivity in the winter time.
Below the mode by the instance data analysis describes technique scheme in detail in the advantage aspect cost, the efficient again.
Following table 3 is the heat pump lectotype selection of solar energy assisted ground source and initial cost situation
Table 3
Energy centre initial cost unit cost of floor space is 178 yuan/M2 as calculated.
The systematic running cost analysis is: in Beijing, heating period is the March 15 of November 15 to next year, and 2880 totally hours, typical meteorological was in year, and it is 1179h that the time of solar irradiation is arranged, and accounts for 40.63% of total heating duration.The all-year-around cooling phase is to amount to 120 days in 05 month 15 days to 09 month 15 days of next year, considers that project time used every day and load distribute, and wholely amounts to 1920 hours for cold period.Because the air conditioning terminal operating cost is complicated, this running cost aspect is only take the energy centre operating cost as benchmark, and is as shown in table 4.
Table 4
0.76 yuan/kwh of existing commercial electricity consumption is basis to above operating cost take Beijing, and the integrated operation variable cost is 0.59 yuan/KWH as calculated.
Analysis through technique scheme and operating cost, can reach a conclusion: be combined with solar energy in the source, ground, both can overcome heat pump for a long time continuously from soil heat-obtaining (or accumulation of heat), will make the temperature field of soil can not get for a long time efficient recovery, thereby cause the soil moisture constantly to reduce the limitation of (or raise), can overcome again that solar radiation is subjected to round the clock, the limitation of the impact of the enchancement factors such as the restriction of the natural conditions such as season, latitude and height above sea level and rainy weather.So solar energy earth source heat pump heat supplying air conditioning system is a kind of ideal winter heating system.During running, preferentially adopt solar energy; When utilizing solar energy resources, cascade utilization, order is followed successively by direct-furnish, directly enters the source pump evaporimeter with condenser series operation, solar energy heating ground heat exchanger or the solar energy of source pump, brings into play to greatest extent the effect of solar energy.
It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although with reference to aforementioned each embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment technical scheme of the utility model.
Claims (7)
1. a solar energy assisted ground source heat pump comprises that load heat exchange composition, underground heat exchange form, solar heat-exchange forms and heat pump, it is characterized in that, also comprises:
The handover trigger device is used for monitoring and whether produces handover triggering condition;
Pipeline reversing service, be arranged in the connecting line of load heat exchange composition, underground heat exchange composition, solar heat-exchange composition and heat pump the pipeline annexation between trigger condition switch load heat exchange composition, underground heat exchange composition, solar heat-exchange composition and the heat pump that is used for arriving according to the handover trigger device monitoring.
2. solar energy assisted ground source heat pump according to claim 1 is characterized in that, described pipeline reversing service comprises changeover module and triggering assembly, wherein:
Described changeover module comprises:
The first switch unit is connected among the heat release loop of heat supplying loop that solar heat-exchange forms and load heat exchange composition;
Among the second switch unit, the condenser circuit that is connected on heat supplying loop that solar heat-exchange forms, heat pump and the loop of load heat exchange composition;
The 3rd switch unit is connected among the loop that the condenser circuit of heat pump and load heat exchange form;
The 4th switch unit is connected among heat supplying loop, pipe laying heat supplying loop and the evaporator with heat pump loop of solar heat-exchange composition;
The 5th switch unit is connected among pipe laying heat supplying loop and the evaporator with heat pump loop;
The 6th switch unit is connected among the heat supplying loop and evaporator with heat pump hot loop of solar heat-exchange composition;
Described triggering assembly comprises any one of following trigger element or makes up:
The solar heating trigger element is used for controlling the first switch unit conducting, other switch units disconnections during to the solar heating trigger condition at described handover trigger device monitoring;
Condenser series connection trigger element is used for controlling the second switch unit and the 5th switch unit conducting at described handover trigger device monitoring when condenser is connected trigger condition, and other switch units disconnect;
Pipe laying triggered unit is used for controlling the 3rd switch unit and the 4th switch unit conducting, other switch units disconnections during to pipe laying triggered condition at described handover trigger device monitoring;
The solar-heating trigger element is used for controlling the 3rd switch unit and the 6th switch unit conducting, other switch units disconnections during to the solar-heating trigger condition at described handover trigger device monitoring;
Pipe laying heat supply trigger element is used for controlling the 3rd switch unit and the 5th switch unit conducting, other switch units disconnections during to pipe laying heat supply trigger condition at described handover trigger device monitoring.
3. solar energy assisted ground source heat pump according to claim 2 is characterized in that described changeover module comprises:
The first valve, the first end and the load heat exchange that are connected to solar heat-exchange composition heat supplying loop form between second end in heat release loop;
The second valve, the second end and the load heat exchange that are connected to solar heat-exchange composition heat supplying loop form between the first end in heat release loop;
The 3rd valve is connected to the tie point that the first valve and load heat exchange form second end in heat release loop, and between condenser circuit the second end;
The 4th valve is connected to the condenser circuit first end, forms between the tie point of first end in heat release loop with the second valve and load heat exchange;
The 5th valve is connected between second end and evaporimeter loop first end of pipe laying heat supplying loop;
The 6th valve is connected between the second end of evaporimeter loop first end and solar heat-exchange composition heat supplying loop;
The 7th valve, the second end and the solar heat-exchange that are connected to the pipe laying heat supplying loop form between the first end of heat supplying loop;
The 8th valve, the first end and the solar heat-exchange that are connected to the pipe laying heat supplying loop form between the first end of heat supplying loop, and wherein, the first end of pipe laying heat supplying loop is connected with second end in evaporimeter loop;
Wherein, described the first valve and the second valve form described the first switch unit; Described the second valve, the 3rd valve and the 9th valve form described the second switch unit; Described the 3rd valve and the 4th valve form described the 3rd switch unit; Described the 6th valve and the 7th valve form described the 4th switch unit; The 5th valve forms described the 5th switch unit; Described the 6th valve and the 8th valve form described the 6th switch unit.
4. solar energy assisted ground source heat pump according to claim 3 is characterized in that, also comprises:
The first water pump is arranged between second end in the first end of pipe laying heat supplying loop and evaporimeter loop;
The second water pump is arranged in the heat release loop of described load heat exchange composition.
5. solar energy assisted ground source heat pump according to claim 4 is characterized in that:
Described solar heat-exchange forms the thermal-arrest loop of the heat release section formation that comprises solar thermal collector, the 3rd water pump, water tank, the 4th water pump and plate type heat exchanger, and the heat supplying loop of the endotherm section of plate type heat exchanger formation;
Described load heat exchange forms and comprises fan coil, radiator and/or flooring radiation device, and the heat release loop of the second water pump formation.
6. arbitrary described solar energy assisted ground source heat pump according to claim 2-5 is characterized in that:
Described handover trigger device is temperature sensor, and the supply water temperature that forms for detection of solar heat-exchange is as trigger condition;
Wherein, described solar heating trigger condition, condenser series connection trigger condition, pipe laying triggered condition, solar-heating trigger condition and pipe laying heat supply trigger condition are respectively temperature threshold values.
7. solar energy assisted ground source heat pump according to claim 6 is characterized in that:
The solar heating trigger condition is for being higher than 50 ℃;
Condenser series connection trigger condition is not for being higher than 50 ℃ and be higher than 40 ℃;
Pipe laying triggered condition is not for being higher than 40 ℃ and be higher than 25 ℃;
The solar-heating trigger condition is not for being higher than 25 ℃ and be higher than 15 ℃;
Pipe laying heat supply trigger condition is not for being higher than 15 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411659 CN202869078U (en) | 2012-08-17 | 2012-08-17 | Solar auxiliary ground-source heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411659 CN202869078U (en) | 2012-08-17 | 2012-08-17 | Solar auxiliary ground-source heat pump system |
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| Publication Number | Publication Date |
|---|---|
| CN202869078U true CN202869078U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220411659 Expired - Fee Related CN202869078U (en) | 2012-08-17 | 2012-08-17 | Solar auxiliary ground-source heat pump system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548212A (en) * | 2018-04-08 | 2018-09-18 | 陕西亚特尔地源空调有限公司 | The heat balance control method of earth source heat pump and gas fired-boiler composite energy supply regulatory region |
-
2012
- 2012-08-17 CN CN 201220411659 patent/CN202869078U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548212A (en) * | 2018-04-08 | 2018-09-18 | 陕西亚特尔地源空调有限公司 | The heat balance control method of earth source heat pump and gas fired-boiler composite energy supply regulatory region |
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Owner name: BEIJING HCAZB ENERGY SAVING ENGINEERING CO., LTD. Free format text: FORMER NAME: BEIJING HCAZB ELECTROMECHANICAL ENGINEERING CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100048, Beijing, Haidian District, 91 West Third Ring Road North, five floor, national cultural building, West E02 Patentee after: HSIN CHONG ASTER ZHONG BIAO BUILDING SERVICES Co.,Ltd. Address before: 100048, Beijing, Haidian District, 91 West Third Ring Road North, five floor, national cultural building, West E02 Patentee before: Beijing HCAZB Electromechanical Engineering Co.,Ltd. |
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Granted publication date: 20130410 Termination date: 20210817 |