CN204165274U - Utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling - Google Patents
Utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling Download PDFInfo
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- CN204165274U CN204165274U CN201420573576.2U CN201420573576U CN204165274U CN 204165274 U CN204165274 U CN 204165274U CN 201420573576 U CN201420573576 U CN 201420573576U CN 204165274 U CN204165274 U CN 204165274U
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Abstract
The utility model discloses a kind of buried pipe ground-source heat pump system utilizing paddy electricity auxiliary heat supplying/cooling, comprise ground heat exchanger, earth source heat pump unit and electric heater unit, the primary side of ground heat exchanger and heat exchanger III forms closed circuit I, and the secondary side of heat exchanger III and user side form closed circuit II; Ground heat exchanger by earth source heat pump unit directly and user side form closed circuit III; Ground heat exchanger forms closed circuit IV by the primary side of earth source heat pump unit and heat exchanger I, and the secondary side of heat exchanger I and user side form closed circuit V; The primary side of electric heater unit and heat exchanger II forms closed circuit VI, and the secondary side of heat exchanger II and user side form closed circuit VII.The technology of shallow layer geothermal energy and demand Side Management and measure being combined, is main Cooling and Heat Source with closed-loop ground source heat pump, and the electric boiler used with the paddy electricity period is for auxiliary thermal source, and end adopts the form of flooring radiation for building cold/heat supply.
Description
Technical field
The utility model relates to the buried pipe ground-source heat pump system (hereinafter referred to as earth source heat pump) utilizing paddy electricity auxiliary heat supplying/cooling, be mainly used in list heating (taking into account cooling) systematic research that thermic load is dominant and method for designing thereof, belong to architectural environment and energy source use field of engineering technology.
Background technology
In recent years due to building energy conservation, CO
2reduce discharging and improve the concern of the environmental problems such as atmospheric haze, utilize the ground source heat pump technology of reproducible shallow layer geothermal energy to obtain in building air conditioning field and develop rapidly.Closed-loop ground source heat pump technology wherein utilizes the huge and metastable characteristic of underground temperature of the earth thermal capacity, by closed loop ground heat exchanger summer to soil release heat, winter from soil absorption heat, realized building cold and heat supply by heat pump.
The earth source heat pump project of China is generally tending towards maximizing, and has occurred now utilizing ground source heat pump technology to solve the active demand of large-scale community central heating, but also faces the outstanding problem such as pipe laying land used deficiency and underground cold imbalance.Single earth-source hot-pump system is applied to heat supply when being the northern Housing Project of major demands, the heat absorbed from soil due to heat supply in winter is usually greater than the heat that summer cooling discharges to soil, system is greater than thermal discharge from the heat-obtaining amount soil for a long time, the soil moisture can be caused to decline year by year, cause system winter operation hydraulic performance decline even cannot normally heat supply.The problems referred to above usually cause earth source heat pump efficiency are not good in the large-scale Housing Project of northern central heating even losing efficacy.
At present for by releasing the earth-source hot-pump system performance degradation or Problem of Failure that cold/heat release amount imbalance causes the whole year, carrying out some researchs, having developed multiple ground source heat pump composite system.Such as, be that the ground source heat pump composite system of auxiliary cold source is successfully applied to the project that summer, refrigeration duty was dominant with cooling tower.But thermic load in winter is dominant or single engineering project heated, although the ground source heat pump composite system that to have had with solar energy, industrial exhaust heat, gas fired-boiler be auxiliary thermal source, but by the restriction of multiple technologies economic condition, these hybrid systems fail large-scale promotion application.New heat supply approach to be provided for the urbanization of northern China, and Rock And Soil annual cold and hot amount imbalance problem in underground when effectively solving flexibly applying ground source heat pump technology, must seek more to meet existing resource condition and energy policy, the stable and auxiliary heating mode that expense is lower.
Utility model content
In order to solve the limitation that existing ground source heat pump technology is applied at the northern area that heating is master, the utility model is by this for shallow layer geothermal energy regenerative resource and utilize the demand Side Management theory of paddy electricity and technology to combine, proposing with closed-loop ground source heat pump is main Cooling and Heat Source, the electric boiler used with the paddy electricity period, for auxiliary thermal source, adopts the list heating+free cold supply system of the Terminal devices such as flooring radiation.
The technical solution adopted in the utility model is as follows:
A kind of buried pipe ground-source heat pump system utilizing paddy electricity auxiliary heat supplying/cooling, comprise ground heat exchanger, earth source heat pump unit and electric heater unit, the primary side of described ground heat exchanger and heat exchanger III forms closed circuit I, and the secondary side of heat exchanger III and user side form closed circuit II; Described ground heat exchanger by earth source heat pump unit directly and user side form closed circuit III; Described ground heat exchanger forms closed circuit IV by the primary side of earth source heat pump unit and heat exchanger I, and the secondary side of heat exchanger I and user side form closed circuit V; The primary side of described electric heater unit and heat exchanger II forms closed circuit VI, and the secondary side of heat exchanger II and user side form closed circuit VII; Described closed circuit I, II, III, IV, V, VI, VII are equipped with and control its valve cut-off.
User side adopts form cooling, the heat supply of flooring radiation.
After described ground heat exchanger series connection the 11 valve, water circulating pump, form closed circuit I through the primary side of heat exchanger III and ground heat exchanger, water circulating pump, the 12 valve, and the floor tunnel of the secondary side of heat exchanger III and user side, water circulating pump, the 13 valve, the 14 valve form closed circuit II.
After described ground heat exchanger series connection the 9th valve, water circulating pump, be communicated with the entrance of earth source heat pump unit; Be communicated with user side inlet after the outlet of earth source heat pump unit is connected in series the first valve by pipeline, and after user's side outlet is connected in series the second valve, gets back to earth source heat pump unit, define closed circuit III; And the outlet of earth source heat pump unit is also by pipeline series connection the 3rd valve, after the primary side of heat exchanger I, serial connection the 4th valve turns back to ground heat exchanger, forms closed circuit IV; The secondary side of heat exchanger I forms closed circuit V after connecting with the 5th valve of user side, water circulating pump, floor tunnel, the 6th valve.
The output of described electric heater unit and the primary side of heat exchanger II form closed circuit VI, and the secondary side of heat exchanger II is positioned at user side, and by forming closed circuit VII with the floor tunnel of user side after pipeline series connection the 7th valve, the 8th valve.
Described heat exchanger I, heat exchanger II, heat exchanger III are positioned at the secondary side of user side, and its connecting line getting back to secondary side is communicated with elevated tank (or constant pressure water compensation apparatus) III, for steady of system press moisturizing.
Described closed circuit I, II, III, IV, V, VI, VII are equipped with temperature sensor and flow sensor, in systems in which thermal resistance temperature sensor and turbine flow transducer are installed, according to actual measurement service data, carry out system optimization and operation reserve adjustment, realize Dynamic controlling, contribute to the cold and hot balance of underground Rock And Soil long-term dynamics.
The control method of the described auxiliary heating ground source heat pump heating and cooling system of paddy electricity is as follows:
Heating Season: peak of power consumption (daytime) and flat section, meet whole space heating load by earth source heat pump unit, only the first valve, the second valve, the 9th valve, the tenth valve opening; If some special severe cold time, when earth source heat pump can not meet the thermic load of peak (daytime) and period at ordinary times time (user side return water temperature is lower than setting value), first valve, the second valve, the 7th valve, the 8th valve, the 9th valve, the tenth valve opening, earth source heat pump and electric hot water system are run simultaneously.
Evening low-valley interval, only the open valve family status seven valve, the 8th valve, meet whole space heating load by electric boiler;
For cold season: only the 11 valve, the 12 valve, the 13 valve, the 14 valve opening, carry out " free cold supply ", both met part refrigeration duty, also alleviate underground cold imbalance problem, ground source recirculated water carries out indirect heat exchange by plate type heat exchanger and user side; When cooling needs is larger, 3rd valve, the 4th valve, the 5th valve, the 6th valve, the 9th valve, the tenth valve opening, start ground-source heat pump host, bear the indoor refrigeration duty of part further, control plate exchanger secondary side (user side) and export water temperature, indoor floor condensation when avoiding supply water temperature too low.
The beneficial effects of the utility model are as follows:
1) the unbalanced bottleneck of the annual cold and hot amount of underground Rock And Soil run into when effectively can solve applying ground source heat pump technology in the Housing Project in North China, make full use of and play renewable energy utilization technology, do not need gas fired-boiler to do the standby heat source of earth-source hot-pump system, more contribute to abolishing burning coal boiler room.As one of reliable heating measure of economy not possessing municipal central heating network region, sustainable development and the Urbanization Construction process of China can be promoted.
2) policies and measures of active response demand Side Management, make full use of the electric auxiliary thermal source as earth-source hot-pump system of paddy at night and useful supplement, effectively can improve the power supplying efficiency of electrical network, the power consumption efficiency of system institute service building thing is promoted 5 ~ 10%, realizes the high unity of economic benefit and social benefit.
3) adopt paddy electricity as auxiliary thermal source, thermic load in winter by a certain percentage can carry out ground heat exchanger designing and calculating, decrease pipe laying amount, system initial cost more traditionally source heat pump system reduces about 30%.Due to peak of power consumption section and flat section operably source heat pump system on daytime, system power consumption is less; Then make full use of the electric power (electricity price is lower than 1/3 of high crest segment) of low-valley interval night, the overall heat cost of this system is lower than existing municipal central heating system by about 30%, is the heat supply new and innovative ways of energy saving economy.
4) native system utilizes the year thermal storage effect and the day heat storage performance of building element of underground Rock And Soil, the ground source recirculated water of low temperature directly can be passed into indoor flooring radiation pipeline summer, meet partial building cooling needs, realize " free cold supply " function, improve living environment;
5) some project can consider that arranging plate type heat exchanger carries out indirect heat exchange so that regulate supply water temperature, avoid supply water temperature too low cause floor condense, prevent pressure-bearing bottom underground pipe too high.
6) this technology also can be used as the not good earth-source hot-pump system of some heating effect, the remedial measure of especially single heating earth source heat pump project.
Accompanying drawing explanation
The auxiliary heating ground source heat pump heating and cooling system flow chart of Fig. 1 paddy electricity;
In figure: 1 earth source heat pump unit; 2 electrothermal atmospheric boilers; 3 floor tunnel; 4 water circulating pumps; 5 ground heat exchangers; 6-1 heat exchanger I, 6-2 heat exchanger II, 6-3 heat exchanger III; 7-1 elevated tank (or constant pressure water compensation apparatus) I, 7-2 elevated tank (or constant pressure water compensation apparatus) II, 7-3 elevated tank (or constant pressure water compensation apparatus) III, V1-V14 valve.
Detailed description of the invention
Shallow layer geothermal energy and demand Side Management ideas of energy-saving combine by the utility model, are main Cooling and Heat Source with closed-loop ground source heat pump, use electric boiler for auxiliary thermal source with the paddy electricity period, adopt the Terminal device of flooring radiation to user's cold/heat supply.According to concrete building load dynamic analog result, reasonable disposition is carried out to systems main parts (electric boiler, underground pipe that heat pump, paddy electricity period are run), guarantee that underground Rock And Soil keeps dynamic cold and hot balance for a long time, the technical scheme of certainty annuity the lowest coursing cost.
The utility model relates generally to severe cold and cold district (especially cold (A) district of CDD26≤90), earth source heat pump bears part free cold supply in summer load and part Winter heat supply load, the electric boiler run using the paddy electricity period as auxiliary thermal source, to meet the underground pipe configuration of the ground source heat pump composite system of building heat supplying demand, the annual cold and hot equilibrium problem research of underground Rock And Soil and Optimization Design thereof.
The auxiliary heating ground source heat pump specific design process of paddy electricity is as follows:
First, calculate building by time cooling and heating load.Ripe DeST software simulation can be adopted.
Secondly, for detailed programs, calculate different buildings cold/thermic load time ground heat exchanger 5 operational factor, thus obtain by the mode of " free cold supply " the heat that can supplement to underground.
3rd, study the heat-transfer mechanism of large-scale ground heat exchanger 5, set up underground heat transfer model comparatively accurately, in conjunction with actual motion effect, upgrading is optimized to underground pipe special designing software.In conjunction with ground thermal property parameter, carried out the underground cold equilibrium analysis of 10 ~ 20 years by simulation softward.
4th, by professional software, determine best pipe laying form and spacing.
5th, same building thing is selected to the mix proportion scheme that can meet user's user demand, the allocation ratio of adjustment geothermal heat exchanger and auxiliary electrical boiler, meets annual underground cold balance as far as possible, and carry out the whole year by time operation simulation of energy consumption.By comparing with the invest and operating cost of solely source heat pump system and other conventional air conditioning system, determine best-of-breed technology scheme.
Finally, certainty annuity runs control strategy.For warm season daytime (peak of power consumption period) and the period bears thermic load primarily of earth-source hot-pump system at ordinary times, night paddy electricity the period mainly run electric boiler.Determine the parameter such as thermic load, distance of embedded pipe that electric boiler, geothermal heat exchanger can be born.Meeting under the thermally equilibrated prerequisite of underground Rock And Soil, through technology and economy comparison, determine optimal operation plan.
The embodiment of final formation is as shown in Figure 1, specific as follows:
Utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling, comprise ground heat exchanger 5, earth source heat pump unit 1 and electrothermal atmospheric boiler 2, ground heat exchanger 5 forms closed circuit I with the primary side of plate type heat exchanger III6-3, and the secondary side of heat exchanger III and user side form closed circuit II; Described ground heat exchanger by earth source heat pump unit directly and user side form closed circuit III; Described ground heat exchanger forms closed circuit IV by the primary side of earth source heat pump unit and heat exchanger I6-1, and the secondary side of heat exchanger I6-1 and user side form closed circuit V; Described electrothermal atmospheric boiler 2 forms closed circuit VI with the primary side of heat exchanger II, and the secondary side of heat exchanger II6-2 and user side form closed circuit VII; Described closed circuit I, II, III, IV, V, VI, VII are equipped with and control its valve cut-off.Form for user's cold/heat supply adopts the form of flooring radiation.
Described ground heat exchanger 5 is connected after the 11 valve V11, water circulating pump 4, form closed circuit I through the primary side of heat exchanger III6-3 and ground heat exchanger 5, water circulating pump the 4, the 12 valve V12, and the flooring radiation pipeline 3 of the secondary side of heat exchanger III6-3 and user side, water circulating pump the 4, the 13 valve V13, the 14 valve V14 form closed circuit II.
Ground heat exchanger 5 is connected after the 9th valve V9, water circulating pump 4, and the entrance be communicated with earth source heat pump unit 1 is communicated with; Be communicated with user side inlet after a part of thermal source of the outlet of earth source heat pump unit is connected in series the first valve V1 by pipeline, and after user's side outlet serial connection valve V2, get back to earth source heat pump unit, define closed circuit I; Another part thermal source, by pipeline series connection the 3rd valve V3, after the primary side of heat exchanger II6-2, turning back to ground heat exchanger 5 by being connected in series the 4th valve V4, forming closed circuit II; The secondary side of heat exchanger II6-2 is connected form closed circuit V with the 5th valve V5 of user side, water circulating pump 4, floor tunnel 3.
The output of water-tube boiler and the primary side of heat exchanger II6-2 form closed circuit VI, and the secondary side of heat exchanger II6-2 is positioned at user side, and by forming closed circuit VII with the floor tunnel 3 of user side after pipeline series connection the 7th valve V7, the 8th valve V8.
Heat exchanger I6-1, heat exchanger II6-2, heat exchanger III6-3 are positioned at the secondary side of user side.
Elevated tank (or constant pressure water compensation apparatus) I7-1 is used for ground source constant pressure supply water;
Elevated tank (or constant pressure water compensation apparatus) II7-2 is used for steam generator system constant pressure supply water;
Elevated tank (or constant pressure water compensation apparatus) III7-3 is used for user side constant pressure supply water;
Closed circuit I, II, III, IV, V, VI, VII are equipped with temperature sensor and flow sensor, in systems in which thermal resistance temperature sensor and turbine flow transducer are installed, according to actual measurement service data, carry out system optimization and operation reserve adjustment, realize Dynamic controlling, contribute to the cold and hot balance of underground Rock And Soil long-term dynamics.This system can make full use of regenerative resource and night paddy electricity, building heat supply in winter and sub-load in summer " free cold supply " can be used in stability and high efficiency ground, effectively solve for the annual cold and hot amount imbalance problem of the underground Rock And Soil warming up the northern Housing Project being master.
2, system monitoring platform is set up
As shown in Figure 1, system has installed thermal resistance temperature sensor and turbine flow transducer, is respectively used to metering user side heat consumption, ground heat exchanger 5 heat exchange amount, electric boiler system heating capacity etc.Collect monitoring system data, actual operating data is analyzed, and the cold and hot balance of decision-making system.Rely on actual motion effect, carry out system optimization, realize Dynamic controlling; Concrete control strategy is as follows:
Summer cooling:
1. refrigeration duty demand is large, starts source pump cooling.End adopts floor heating pipeline radiation refrigeration, and for avoiding the too low floor of causing of supply water temperature to condense, add plate type heat exchanger 6-1 and carry out water temperature control, the water temperature that supplied water by end controls more than 16-18 DEG C.Now, the condenser of underground pipe 5, valve V9, valve V10, buried side circulating pump 4, source pump 1 forms low-temperature receiver side ring road; The evaporimeter of source pump 1, valve V3, valve V4, intercycle pump 4, plate type heat exchanger 6-1 primary side form intermediate loop; Plate type heat exchanger 6-1 secondary side, valve V5, valve V6, user side circulating pump 4, floor heating pipeline 3 form user's side ring road.
2. refrigeration duty demand is little or without refrigeration duty demand, directly underground pipe side recirculated water is passed into end flooring radiation pipeline cooling, thus to underground heat release, with supplementary partial heat, promotes that annual underground cold balances.The effect of plate type heat exchanger 6-3: one is control water temperature, and invariably harden dew, plays intermediate heat transfer effect; Two is prevent user's side ducts system be directly communicated with underground pipe side thus cause system overpressure.Now, the primary side of underground pipe 5, valve V11, valve V12, buried side circulating pump 4, plate type heat exchanger 6-3 forms low-temperature receiver side ring road; The secondary side of plate type heat exchanger 6-3, valve V13, valve V14, user side circulating pump 4, floor heating pipeline 3 form user's side ring road.
Winter heat supply:
1. daytime peak of power consumption and flat section, use source pump heat supply, end adopts floor panel heating.Investigate building thermal storage effect, heat load by time distribution characteristics and indoor thermal environment Changing Pattern, and the cold and hot balance simulation of long-term dynamics is carried out to underground Rock And Soil, thus the design capacity (usually consider meet Partial peaks thermic load) of pipe laying definitely.Now, the evaporimeter of underground pipe 5, valve V9, valve V10, buried side circulating pump 4, source pump 1 forms heat source side loop; The condenser of source pump 1, valve V1, valve V2, user side circulating pump 4, floor heating pipeline 3 form user's side ring road.
2. the paddy electricity period at night, use electric hot water heat supply, boiler is usually by 100% configuration of thermic load.Generally need to arrange plate type heat exchanger 6-2, make boiler keep atmospheric pressure state.Now, electric hot water 2, primary side circulating pump, change formula heat exchanger 6-2 primary side form heat source side; Change the secondary side of formula heat exchanger 6-2, valve V7, valve V8, user side circulating pump 4, floor heating pipeline 3 form user's side ring road.
3. some special severe cold weather, if when the earth-source hot-pump system of non-valley electricity period on daytime can not meet whole thermal load demands, sacrificial section economy, uses in parallel with electric boiler system for earth-source hot-pump system, for peak regulation.Now, the evaporimeter of underground pipe 5, valve V9, valve V10, buried side circulating pump 4, source pump 1 forms heat source side loop; Electric hot water 2, primary side circulating pump, change formula heat exchanger 6-2 primary side form heat source side; The condenser of source pump 1, valve V1, valve V2, user side circulating pump 4, floor heating pipeline 3 form user's side ring road.Change the secondary side of formula heat exchanger 6-2, valve V7, valve V8, user side circulating pump 4, floor heating pipeline 3 form user's side ring road.
Concrete control method is as follows:
Heating Season: peak of power consumption and flat section, meet whole space heating load by earth source heat pump unit, only the first valve V1, the second valve V2, the 9th valve V9, the tenth valve V10 open; If some special severe cold time, earth source heat pump unit can not meet peak and at ordinary times the period thermic load constantly, first valve V1, the second valve V2, the 7th valve V7, the 8th valve V8, the 9th valve V9, the tenth valve V10 open, and earth source heat pump and electric hot water system are run simultaneously;
Evening low-valley interval, only the open valve family status seven valve V7, the 8th valve V8, meet whole space heating load by electric boiler.
Claims (7)
1. one kind utilizes the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling, it is characterized in that: comprise ground heat exchanger, earth source heat pump unit and electric heater unit, the primary side of described ground heat exchanger and heat exchanger III forms closed circuit I, and the secondary side of heat exchanger III and user side form closed circuit II; Described ground heat exchanger by earth source heat pump unit directly and user side form closed circuit III; Described ground heat exchanger forms closed circuit IV by the primary side of earth source heat pump unit and heat exchanger I, and the secondary side of heat exchanger I and user side form closed circuit V; The primary side of described electric heater unit and heat exchanger II forms closed circuit VI, and the secondary side of heat exchanger II and user side form closed circuit VII; Described closed circuit I, II, III, IV, V, VI, VII are equipped with and control its valve cut-off.
2. utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling as claimed in claim 1, it is characterized in that: described user side adopts form cooling, the heat supply of flooring radiation.
3. utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling as claimed in claim 1, it is characterized in that: after described ground heat exchanger series connection the 11 valve, water circulating pump, form closed circuit I through the primary side of heat exchanger III and ground heat exchanger, water circulating pump, the 12 valve, and the floor tunnel of the secondary side of heat exchanger III and user side, water circulating pump, the 13 valve, the 14 valve form closed circuit II.
4. utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling as claimed in claim 2, it is characterized in that: after described ground heat exchanger series connection the 9th valve, water circulating pump, be communicated with the entrance of earth source heat pump unit; Be communicated with user side inlet after the outlet of earth source heat pump unit is connected in series the first valve by pipeline, and after user's side outlet is connected in series the second valve, gets back to earth source heat pump unit, define closed circuit III; And the outlet of earth source heat pump unit is also by pipeline series connection the 3rd valve, after the primary side of heat exchanger I, serial connection the 4th valve turns back to ground heat exchanger, forms closed circuit IV; The secondary side of heat exchanger I forms closed circuit V after connecting with the 5th valve of user side, water circulating pump, floor tunnel, the 6th valve.
5. utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling as claimed in claim 3, it is characterized in that: the output of described electric heater unit and the primary side of heat exchanger II form closed circuit VI, the secondary side of heat exchanger II is positioned at user side, and by forming closed circuit VII with the floor tunnel of user side after pipeline series connection the 7th valve, the 8th valve.
6. utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling as claimed in claim 5, it is characterized in that: described closed circuit I, II, III, IV, V, VI, VI are equipped with temperature sensor and flow sensor.
7. utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling as claimed in claim 3, it is characterized in that: described heat exchanger I, heat exchanger II, heat exchanger III are positioned at the secondary side of user side, its connecting line getting back to secondary side is communicated with elevated tank III or constant pressure water compensation apparatus, for steady of system press moisturizing.
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| CN201420573576.2U CN204165274U (en) | 2014-09-30 | 2014-09-30 | Utilize the buried pipe ground-source heat pump system of paddy electricity auxiliary heat supplying/cooling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344603A (en) * | 2014-09-30 | 2015-02-11 | 山东中瑞新能源科技有限公司 | Ground-source heat pump system for supplying heat/cold under under the assistance of valley electricity and method thereof |
| CN107461963A (en) * | 2017-09-22 | 2017-12-12 | 张春奇 | A kind of heavy caliber closed earth source heat pump integrated system |
-
2014
- 2014-09-30 CN CN201420573576.2U patent/CN204165274U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344603A (en) * | 2014-09-30 | 2015-02-11 | 山东中瑞新能源科技有限公司 | Ground-source heat pump system for supplying heat/cold under under the assistance of valley electricity and method thereof |
| CN104344603B (en) * | 2014-09-30 | 2016-06-01 | 山东中瑞新能源科技有限公司 | Utilize buried pipe ground-source heat pump system and the method for paddy electricity auxiliary heat supplying/cooling |
| CN107461963A (en) * | 2017-09-22 | 2017-12-12 | 张春奇 | A kind of heavy caliber closed earth source heat pump integrated system |
| CN107461963B (en) * | 2017-09-22 | 2023-11-07 | 张春奇 | Large-caliber closed ground source heat pump integrated system |
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