CN204165170U - Utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity - Google Patents
Utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity Download PDFInfo
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- CN204165170U CN204165170U CN201420573682.0U CN201420573682U CN204165170U CN 204165170 U CN204165170 U CN 204165170U CN 201420573682 U CN201420573682 U CN 201420573682U CN 204165170 U CN204165170 U CN 204165170U
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Abstract
The utility model discloses a kind of buried pipe ground-source heat pump system utilizing the auxiliary cold-storage/accumulation of heat of paddy electricity, ground heat exchanger, earth source heat pump unit form cold/heat source side ring road I, the evaporimeter of earth source heat pump unit, the primary side of heat exchanger I form heat exchanger loop II, and the secondary side of heat exchanger I and user side form loop III; The evaporimeter of earth source heat pump unit, the formation cold-storage loop IV of energy storage water tank; The primary side formation of energy storage water tank, heat exchanger II lets cool/heat release loop V; The secondary side of heat exchanger II and user side form loop VI; Electric heater unit and energy storage water tank form heat source side loop VII; The condenser of earth source heat pump unit and floor heating pipeline form user's side ring road VIII.This system makes full use of shallow layer geothermal energy, paddy electricity, electric energy accumulating technique, realizes most economical operation of air conditioner mode.This technology solves the cold and hot amount imbalance problem of northern Housing Project underground Rock And Soil, can be used as the remedial measure of single heating earth source heat pump project.
Description
Technical field
The utility model relates to a kind of buried pipe ground-source heat pump system (hereinafter referred to as earth source heat pump) utilizing the auxiliary cold-storage/accumulation of heat of paddy electricity, 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 specialized engineering technical field.
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 earth thermal capacity huge and the metastable characteristic of underground Rock And Soil temperature, absorb heat to Rock And Soil release heat, winter from Rock And Soil summer by closed loop ground heat exchanger, realized building cold and heat supply by earth source 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.Such as, single earth-source hot-pump system is applied to heat supply when being the northern Housing Project of major demands, because the heat absorbed from Rock And Soil for warm season is usually greater than the heat discharged to it for cold season, system is greater than thermal discharge from the heat-obtaining amount Rock And Soil on long terms, Rock And Soil temperature 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.
Carry out large quantifier elimination for by the earth-source hot-pump system performance degradation that the whole year, cold and hot amount imbalance caused or Problem of Failure at present, develop multiple ground source heat pump composite system.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 building 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, due to the restriction of all condition of technology and economy, 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, stable and the auxiliary heating mode that expense is lower and more economical operation reserve.
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 reproducible shallow layer geothermal energy and utilize the DSM technology of paddy electricity, energy accumulating technique combines, proposing with closed-loop ground source heat pump is main Cooling and Heat Source, with the heat of paddy electricity period accumulation for auxiliary thermal source, meet based on the Practical Project demand of heating, or realize the technology application of earth source heat pump list heating (suitably taking into account free cold supply) adopting 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 the auxiliary cold-storage/accumulation of heat of paddy electricity, comprise ground heat exchanger, earth source heat pump unit and electric heater unit, energy storage water tank, the evaporator/condenser of described ground heat exchanger, earth source heat pump unit forms cold/heat source side ring road I, the evaporimeter of described earth source heat pump unit, the primary side of heat exchanger I form intermediate heat transfer loop II, and the secondary side of described heat exchanger I and user side form user's side ring road III; The evaporimeter of earth source heat pump unit, energy storage water tank form cold-storage loop IV; The primary side formation of energy storage water tank, heat exchanger II lets cool/heat release loop V; The secondary side of heat exchanger II and user side form circulation loop VI; Described electric heater unit and energy storage water tank form heat source side loop VII; The condenser of described earth source heat pump unit and floor heating pipeline form user's side ring road VIII; Described circulation loop I, II, III, IV, V, VI, VII, VIII are equipped with and control its valve cut-off.
After described ground heat exchanger series circulation water pump, be communicated with the condenser/evaporator entrance of earth source heat pump unit; The condenser/evaporator outlet of earth source heat pump unit gets back to ground heat exchanger by pipeline, defines cold/heat source side ring road I.
The outlet of earth source heat pump unit is also by after pipeline series connection the 3rd valve, water circulating pump, and after the primary side of heat exchanger I, serial connection the 4th valve turns back to ground heat exchanger, forms intermediate heat transfer loop II; The secondary side of heat exchanger I is connected with the 5th valve of user side, water circulating pump, floor tunnel, the 6th valve and is formed user's side ring road III.
After evaporator series the 7th valve of described earth source heat pump unit, the 8th valve, intercycle pump, form cold-storage loop IV with energy storage water tank.
After described energy storage water tank series circulation water pump, formed with the primary side of heat exchanger II and let cool/heat release loop V, the secondary side of heat exchanger II is positioned at user side, and by forming user's side ring road VI with the floor tunnel of user side after pipeline series connection the 11 valve, the 12 valve.
After described electric heater unit series connection primary side circulating pump, the 9th valve, the tenth valve, and energy storage water tank forms heat source side loop VII.
The condenser of described earth source heat pump unit is connected after the first valve, the second valve, user side circulating pump, and floor heating pipeline forms user's side ring road VIII.
Described heat exchanger I, heat exchanger II are positioned at the secondary side of user side, and 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.
Described circulation loop I, II, III, IV, V, VI, VII, VIII are equipped with temperature sensor, flow sensor and circulating pump.
A control method for the auxiliary heating ground source heat pump heat storage and cold accumulation system of paddy electricity is as follows:
heating Season:evening, low-valley interval, bore whole day or part heat load by electric heater unit, the 9th valve, the tenth valve, the 11 valve, the 12 valve opening, and system stores while heat supply; Daytime peak of power consumption and flat section, by energy storage water tank heat release, the 11 valve, the 12 valve opening, system is in exothermic phase; Some severe cold weather, during night storage heating quantity not sufficient, daytime first valve, the second valve, the 11 valve, the 12 valve opening, earth-source hot-pump system and electric accumulation of energy thermal desorption system run simultaneously.
for cold season:refrigeration duty demand little or without refrigeration duty demand time, the 3rd valve, the 4th valve, the 5th valve, the 6th valve opening, use source pump supplying cold directly; Evening, low-valley interval, bore whole day or part refrigeration duty by source pump, the 7th valve, the 8th valve, the 11 valve, the 12 valve opening, and system stores while cooling; Daytime peak of power consumption and flat section, let cool by energy storage water tank, the 11 valve, the 12 valve opening, system is in the stage of letting cool; Some tight hot weather, when night, cold storage capacity was not enough, daytime the 3rd valve, the 4th valve, the 5th valve, the 6th valve, the 11 valve, the 12 valve opening, earth-source hot-pump system and electric accumulation of energy let cool system and run simultaneously.
The beneficial effects of the utility model are as follows:
1) the unbalanced bottleneck problem of the annual cold and hot amount in the underground run into when effectively can solve applying ground source heat pump technology in the residential housing in North China, make full use of regenerative resource, gas fired-boiler is not needed to do standby heat source, contribute to abolishing burning coal boiler room, can provide joint economic heat supply in winter reliably to the region not possessing city planting ductwork central heating condition, for the sustainable development of China and Urbanization Construction contribute.
2) active response demand Side Management relevant policies, make full use of the electric auxiliary thermal source as earth source heat pump of paddy at night, utilize paddy electricity energy accumulating technique to realize more economical system operation mode.Effectively can improve the power supplying efficiency of electrical network simultaneously, the power consumption efficiency of system institute service building thing be promoted 5 ~ 10%, realizes the economic benefit of new heat-supplying system and the high unity of social benefit.
3) utilize paddy electricity energy accumulating technique, thermic load in winter by a certain percentage can carry out ground heat exchanger designing and calculating and source pump configuration, decrease pipe laying amount and installed capacity, system initial cost more traditionally source heat pump system significantly reduces.Daytime peak of power consumption section and flat section can only operating circulating water pump, whole load is born by energy-storage system, then run energy-storage system and earth-source hot-pump system during extreme weather simultaneously. because paddy electricity electricity price is about 1/3 of peak electricity tariff, the overall cold/heat supply expense of this system also obviously reduces.
4) consider that arranging plate type heat exchanger carries out indirect heat exchange, so that water energy-storage system waterpower adjustment and temperature regulate, avoid supply water temperature too lowly to cause floor to condense, when preventing from adopting enclosed energy storage water tank water tank pressure-bearing too high or adopt open tank time backwater gravitional force loss.
6) this technology can alleviate underground cold imbalance problem, also can be used as the remedial measure of the not good earth-source hot-pump system of some heating effect, especially single heating earth source heat pump project.
Accompanying drawing explanation
Auxiliary cold-storage/storage heat and ground source heat pump the system flow chart of Fig. 1 paddy electricity
In figure: 1 earth source heat pump unit, 2 electrothermal atmospheric boilers, 3 accumulation of energys (cold-storage/accumulation of heat) water tank, 4 floor tunnel, 5 ground heat exchangers 5,6 water circulating pump 6,7-1 plate type heat exchanger I, 7-2 plate type heat exchanger II, 8-1 elevated tank (or constant pressure water compensation apparatus) I, 8-2 elevated tank (or constant pressure water compensation apparatus) II, 8-3 elevated tank (or constant pressure water compensation apparatus) III, V1-V12 valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
The utility model relates generally to severe cold and cold district (especially cold (A) district of CDD26≤90), earth source heat pump bears whole cooling in summer load and part Winter heat supply load, the heat accumulated by energy storage water tank using paddy electricity period electric boiler, as auxiliary thermal source, meets the underground pipe configuration of the ground source heat pump composite system of building heat supplying demand, installed capacity and energy storage water tank configuration, the annual cold and hot equilibrium problem research of underground Rock And Soil and Optimization Design thereof.
This system can make full use of regenerative resource and night paddy electricity, can be used for building heat supply in winter and summer " free cold supply " in stability and high efficiency ground, effectively solving for warming up is the annual cold and hot amount imbalance problem of underground Rock And Soil of main northern Housing Project.And in conjunction with electric energy accumulating technique, realize most economical operation of air conditioner mode.
The utility model main research is the steric requirements can placing energy storage water tank according to concrete building load dynamic analog result and scene, to systems main parts (heat pump, paddy electricity the period run electric boiler, energy storage water tank, underground pipe) configuration and operation reserve study, with the cold and hot balance of the long-term dynamics of underground Rock And Soil and system cloud gray model expense minimum for optimization aim.By changing operation reserve, calculating its system invest and operating cost, determining the most economical method of operation; If when project possesses enough power supply capacities, the steric requirements can placing energy storage water tank or Technological Economy rational situation, coupling arranges energy storage water tank, uses the accumulation of energy of paddy electricity, for the heat supply/cooling of whole day as far as possible.
Concrete method for designing is as follows:
1, the auxiliary heating ground source heat pump system designs of paddy electricity
First, calculate building by time cooling and heating load.Ripe DEST software simulation can be adopted.
Secondly, for detailed programs, calculate the operational factor of ground heat exchanger during different building load (cold/heat supply amounts), thus obtain by the mode of " free cold supply " the heat that can supplement to underground.
3rd, study large-scale ground heat exchanger heat-transfer mechanism, 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 configuration of the geothermal heat exchanger of adjustment earth source heat pump load system, source pump, auxiliary electrical boiler, energy storage water tank, meets annual underground cold balance as far as possible, and carry out whole year by time operation simulation of energy consumption.By comparing with the invest and operating cost of solely source heat pump system and 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 hold over system and/or earth-source hot-pump system at ordinary times, night paddy electricity the period mainly run electric boiler by energy storage water tank accumulation of heat.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, as far as possible the installed capacity of minimizing equipment.
The embodiment of final formation as shown in Figure 1,
After ground heat exchanger series circulation water pump, be communicated with the condenser/evaporator entrance of earth source heat pump unit; The condenser/evaporator outlet of earth source heat pump unit gets back to ground heat exchanger by pipeline, defines cold/heat source side ring road I.
The outlet of earth source heat pump unit 1 is also by after pipeline series connection the 3rd valve, water circulating pump 6, and after the primary side of plate type heat exchanger I, serial connection the 4th valve turns back to ground heat exchanger 5, forms intermediate heat transfer loop II; The secondary side of heat exchanger I is connected with the 5th valve V5 of user side, water circulating pump, floor tunnel, the 6th valve v6 and is formed user's side ring road III.
After evaporator series the 7th valve V7, the 8th valve V8 of earth source heat pump unit 1, intercycle pump, form cold-storage loop IV with cold-storage/energy storage water tank 3.
After energy storage water tank 13 series circulation water pump, formed with the primary side of plate type heat exchanger II and let cool/heat release loop V, the secondary side of plate type heat exchanger II is positioned at user side, and by forming user's side ring road VI with the floor tunnel of user side after pipeline series connection the 11 valve V11, the 12 valve V12.
After electric hot water series connection primary side circulating pump, the 9th valve V9, the tenth valve V10, and energy storage water tank 3 forms heat source side loop VII.
The condenser of earth source heat pump unit is connected after the first valve V1, the second valve V2, user side circulating pump, and floor heating pipeline forms user's side ring road VIII.
Plate type heat exchanger I7-1, plate type heat exchanger II7-2 are positioned at the secondary side of user side, and 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.
Circulation loop I, II, III, IV, V, VI, VII, VIII are equipped with temperature sensor, flow sensor and circulating pump.
Elevated tank (or constant pressure water compensation apparatus) I8-1 is used for ground source constant pressure supply water;
Elevated tank (or constant pressure water compensation apparatus) II8-2 is used for steam generator system constant pressure supply water;
Elevated tank (or constant pressure water compensation apparatus) III8-3 is used for user side constant pressure supply water;
Electrothermal atmospheric boiler 2: by 100% configuration of thermic load, be used for manufacturing hot water, only evening, the paddy electricity period was run, by the accumulation of energy of accumulation of energy (cold-storage/accumulation of heat) water tank 3 in the winter time.
Accumulation of energy (cold-storage/accumulation of heat) water tank 3: the accumulation of energy of paddy electricity is used.Space and the economy of energy storage water tank can be placed according to scene, analytically the proportioning of source heat pump system and electric energy-storage system, determine the maximum accumulation of energy of electric energy-storage system, according to cold-storage/accumulation of heat temperature difference, thus determine the size of accumulation of energy (cold-storage/accumulation of heat) water tank 3.
Plate type heat exchanger 7-1: when Load in Summer demand is less, earth-source hot-pump system supplying cold directly; Or the cold storage capacity of cold-storage water tank is when can not meet the refrigeration duty of whole day, desirably source heat pump system and electric energy-storage system supply cold operation simultaneously.End floor radiant cooling, the effect of plate type heat exchanger 7-1: is control water temperature more than 16-18 DEG C, avoids the too low floor of causing of supply water temperature to condense.
Plate type heat exchanger 7-2: winter or summer all runs, end floor radiant cooling/heat supply, the effect of plate type heat exchanger 7-2: is be convenient to system waterpower adjustment.Two is prevent from user side from connecting with energy storage water tank to cause water tank superpressure, plays intermediate heat transfer effect.Three is control water temperature more than 16-18 DEG C, and when avoiding summer operation, the too low floor of causing of supply water temperature condenses.
3 elevated tanks: also known as expansion tank, system water supplement use, can be placed on roof.
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 exchange amount, ground heat exchanger heat exchange amount, electric boiler system heat exchange amount 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.
The operation reserve of native system is as follows: (system is totally 8 loops, and some loop belongs to the summer in winter and shares loop)
summer cooling:
1) refrigeration duty demand is little or without refrigeration duty demand, uses source pump supplying cold directly, system toward underground heat release, to ensure that annual underground cold balances.End floor radiant cooling, for avoiding the too low floor of causing of supply water temperature to condense, add plate type heat exchanger 7-1 and carry out water temperature control, the water temperature that supplied water by end controls more than 16-18 DEG C.Now, ground heat exchanger 5, source circulating pump 6, earth source heat pump unit 1 condenser form low-temperature receiver side ring road I; The primary side of the evaporimeter of earth source heat pump unit 1, the 3rd valve V3, the 4th valve V4, intercycle pump 6, plate type heat exchanger 7-1 forms intermediate heat transfer loop II; The secondary side of plate type heat exchanger 7-1, the 5th valve V5, the 6th valve V6, user side circulating pump 6, floor heating pipeline 4 form user's side ring road III.
2), stored while cooling by energy storage water tank, meet the refrigeration duty demand of whole day or part the paddy electricity period in the evening.The paddy electricity period, source pump refrigerating operaton, electric energy-storage system stores while cooling.Now, ground heat exchanger 5, source circulating pump 6, earth source heat pump unit 1 condenser form low-temperature receiver side ring road I; The formation cold-storage loop IV of the evaporimeter of earth source heat pump unit 1, the 7th valve V7, the 8th valve V8, intercycle pump 6, energy storage water tank 3; The primary side formation of energy storage water tank 3, intercycle pump 6, plate type heat exchanger 7-2 lets cool loop V; The secondary side of plate type heat exchanger 7-2, the 11 valve V11, the 12 valve V12, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VI.
3) daytime peak of power consumption and flat section, let cool by energy storage water tank.To connect with energy storage water tank for preventing user side and cause water tank superpressure and system waterpower adjustment, spy adds plate type heat exchanger 7-2 and plays intermediate heat transfer effect; Water supply water temperature can control more than 16-18 DEG C by plate type heat exchanger 7-2 simultaneously, avoids the too low floor of causing of supply water temperature to condense.Now, the primary side formation of energy storage water tank 3, intercycle pump 6, plate type heat exchanger 7-2 lets cool loop V; The secondary side of plate type heat exchanger 7-2, the 11 valve V11, the 12 valve V12, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VI.
4) some tight hot weather, when the cold of energy storage water tank savings can not meet whole refrigeration duty demand on daytime, earth-source hot-pump system and electric accumulation of energy let cool system parallel running, while cooling.Now, the primary side formation of energy storage water tank 3, intercycle pump 6, plate type heat exchanger 7-2 lets cool loop V; The secondary side of plate type heat exchanger 7-2, the 11 valve V11, the 12 valve V12, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VI.Ground heat exchanger 5, source circulating pump 6, earth source heat pump unit 1 condenser form low-temperature receiver side ring road I; The primary side of the evaporimeter of earth source heat pump unit 1, V3, V4, intercycle pump 6, plate type heat exchanger 7-1 forms intermediate heat transfer loop II; The secondary side of plate type heat exchanger 7-1, V5, V6, user side circulating pump 6, floor heating pipeline 4 form user's side ring road III.
winter heat supply:
1), stored while heat supply by energy storage water tank, meet the thermal load demands of whole day or part the paddy electricity period in the evening.The paddy electricity period, electric hot water runs, and electric energy-storage system stores while heat supply, and boiler is by 100% configuration of thermic load.Now, electric hot water 2, primary side circulating pump 6, the 9th valve V9, the tenth valve V10, energy storage water tank 3 form heat source side loop VII.The primary side of energy storage water tank 3, intercycle pump 6, plate type heat exchanger 7-2 forms heat release loop V; The secondary side of plate type heat exchanger 7-2, the 11 valve V11, the 12 valve V12, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VI.
2) daytime peak of power consumption and flat section, by energy storage water tank heat release.To connect with energy storage water tank for preventing user side and cause water tank superpressure and system waterpower adjustment, spy adds plate type heat exchanger 7-2 and plays intermediate heat transfer effect.Now, the primary side of energy storage water tank 3, intercycle pump 6, plate type heat exchanger 7-2 forms heat release loop V; The secondary side of plate type heat exchanger 7-2, the 11 valve V11, the 12 valve V12, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VI.
3) some severe cold weather, when the heat of energy storage water tank savings can not meet whole thermal load demands on daytime, earth-source hot-pump system and the parallel running of electric accumulation of energy thermal desorption system, while heat supply.End adopts floor panel heating.To be dominant building for thermic load, underground pipe amount, installed capacity are configured (as 100% or 70%) by the certain proportion of design heating load.Now, the primary side of energy storage water tank 3, intercycle pump 6, plate type heat exchanger 7-2 forms heat release loop V; The secondary side of plate type heat exchanger 7-2, the 11 valve V11, the 12 valve V12, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VI.Ground heat exchanger 5, source circulating pump 6, earth source heat pump unit 1 evaporimeter form heat source side loop I; The condenser of earth source heat pump unit 1, the first valve V1, the second valve V2, user side circulating pump 6, floor heating pipeline 4 form user's side ring road VIII.
Native system adopts underground pipe System Take refrigeration duty and part heat load, and pipe laying amount is configured according to the certain proportion of design heating load, the installed capacity of corresponding configuration source pump.Compared to source heat pump system routinely, decrease pipe laying amount, installed capacity, reduce initial cost.The more traditional earth source heat pump of initial cost significantly reduces.
Daytime peak of power consumption section and flat section, earth-source hot-pump system runs (earth source heat pump and electric energy-storage system parallel running), and efficiency is higher, and the electricity consuming 1kwh about manufactures cold or the heat of 4kwh; Evening low ebb section, when architectural power supply ability meets, system to greatest extent full paddy section is run.Because low ebb section electricity price is about 1/3 of high crest segment, the more existing central heating system of overall running cost significantly reduces.
control method is as follows:
heating Season:evening, low-valley interval, bore whole day or part heat load by electric heater unit, and the 9th valve V9, the tenth valve V10, the 11 valve V11, the 12 valve V12 open, and system stores while heat supply; Daytime peak of power consumption and flat section, by energy storage water tank heat release, the 11 valve V11, the 12 valve V12 open, and system is in exothermic phase; Some severe cold weather, during night storage heating quantity not sufficient, daytime first valve V1, the second valve V2, the 11 valve V11, the 12 valve V12 open, earth-source hot-pump system and electric accumulation of energy thermal desorption system run simultaneously.
for cold season:refrigeration duty demand little or without refrigeration duty demand time, the 3rd valve V3, the 4th valve V4, the 5th valve V5, the 6th valve V6 open, and use source pump supplying cold directly; Evening, low-valley interval, bore whole day or part refrigeration duty by source pump, and the 7th valve V7, the 8th valve V8, the 11 valve V11, the 12 valve V12 open, and system stores while cooling; Daytime peak of power consumption and flat section, let cool by energy storage water tank, the 11 valve V11, the 12 valve V12 open, and system is in the stage of letting cool; Some tight hot weather, when night, cold storage capacity was not enough, daytime the 3rd valve V3, the 4th valve V4, the 5th valve V5, the 6th valve V6, the 11 valve V11, the 12 valve V12 open, earth-source hot-pump system and electric accumulation of energy let cool system and run simultaneously.
Claims (9)
1. one kind utilizes the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity, it is characterized in that: comprise ground heat exchanger, earth source heat pump unit and electric heater unit, energy storage water tank, the evaporator/condenser of described ground heat exchanger, earth source heat pump unit forms cold/heat source side ring road I, the evaporimeter of described earth source heat pump unit, the primary side of heat exchanger I form intermediate heat transfer loop II, and the secondary side of described heat exchanger I and user side form user's side ring road III; The evaporimeter of earth source heat pump unit, energy storage water tank form cold-storage loop IV; The primary side formation of energy storage water tank, heat exchanger II lets cool/heat release loop V; The secondary side of heat exchanger II and user side form circulation loop VI; Described electric heater unit and energy storage water tank form heat source side loop VII; The condenser of described earth source heat pump unit and floor heating pipeline form user's side ring road VIII; Described circulation loop I, II, III, IV, V, VI, VII, VIII are equipped with and control its valve cut-off.
2. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that: after described ground heat exchanger series circulation water pump, be communicated with the condenser/evaporator entrance of earth source heat pump unit; The condenser/evaporator outlet of earth source heat pump unit gets back to ground heat exchanger by pipeline, defines cold/heat source side ring road I.
3. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that: the outlet of earth source heat pump unit is also by after pipeline series connection the 3rd valve, water circulating pump, after the primary side of heat exchanger I, be connected in series the 4th valve and turn back to ground heat exchanger, form intermediate heat transfer loop II; The secondary side of heat exchanger I is connected with the 5th valve of user side, water circulating pump, floor tunnel, the 6th valve and is formed user's side ring road III.
4. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that:
After evaporator series the 7th valve of described earth source heat pump unit, the 8th valve, intercycle pump, form cold-storage loop IV with energy storage water tank.
5. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that: after described energy storage water tank series circulation water pump, formed with the primary side of heat exchanger II and let cool/heat release loop V;
The secondary side of heat exchanger II is positioned at user side, and by forming user's side ring road VI with the floor tunnel of user side after pipeline series connection the 11 valve, the 12 valve.
6. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that:
After described electric heater unit series connection primary side circulating pump, the 9th valve, the tenth valve, and energy storage water tank forms heat source side loop VII.
7. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that:
The condenser of described earth source heat pump unit is connected after the first valve, the second valve, user side circulating pump, and floor heating pipeline forms user's side ring road VIII.
8. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that: described heat exchanger I, heat exchanger II 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.
9. utilize the buried pipe ground-source heat pump system of the auxiliary cold-storage/accumulation of heat of paddy electricity as claimed in claim 1, it is characterized in that: described circulation loop I, II, III, IV, V, VI, VII, VIII are equipped with temperature sensor, flow sensor and water circulating pump.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315629A (en) * | 2014-09-30 | 2015-01-28 | 山东中瑞新能源科技有限公司 | Buried pipe ground source heat pump system and method using peak power for assisting cold/heat storage |
| CN108362036A (en) * | 2018-03-29 | 2018-08-03 | 华北电力大学（保定） | A kind of solar energy assisted ground source heat pump cooling heating system and its application method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315629A (en) * | 2014-09-30 | 2015-01-28 | 山东中瑞新能源科技有限公司 | Buried pipe ground source heat pump system and method using peak power for assisting cold/heat storage |
| CN104315629B (en) * | 2014-09-30 | 2017-01-18 | 山东中瑞新能源科技有限公司 | Buried pipe ground source heat pump system and method using peak power for assisting cold/heat storage |
| CN108362036A (en) * | 2018-03-29 | 2018-08-03 | 华北电力大学（保定） | A kind of solar energy assisted ground source heat pump cooling heating system and its application method |
| CN108362036B (en) * | 2018-03-29 | 2023-05-12 | 华北电力大学（保定） | Solar-assisted ground source heat pump cooling and heating system and application method thereof |
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