CN101974420A - System for warming methane tank by ground source/air source heat pump and control method - Google Patents
System for warming methane tank by ground source/air source heat pump and control method Download PDFInfo
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Abstract
The invention belongs to the field of energy conservation and in particular relates to a system for warming a methane tank by a ground source/air source heat pump and a control method. The system consists of an underground loop, air cooling equipment, a ground source/air source heat pump public unit and a control system. The control method comprises that: when the outdoor average temperature is below 20 DEG C for ten days successively, a ground source heat pump unit is started for heat exchange; when the outdoor temperature is higher than 20 DEG C for ten days successively, an air source heat pump unit is started for heat exchange; when the temperature in the methane tank is reduced to below 35 DEG C, the ground source/air source heat pump unit is automatically started and transfers the heat of the underground water into hot water in a heating coil in the methane tank by consuming electric energy; and when the water inlet and outlet temperature difference of the ground source/air source heat pump unit is 7.5 DEG C and the temperature of the methane tank is 35 DEG C, the ground source/air source heat pump unit automatically stops working. Medium-scale fermentation engineering is taken as an object, and a novel warming system for improving the utilization rate of the energy and reducing construction cost on the premise of ensuring methane yield, and a control method are explored; and the method has high energy-saving benefit and good environmental-protection effect.
Description
Technical field
The invention belongs to energy-saving field, relate to earth source heat pump/air source heat pump technology, relate in particular to a kind of land used source/air source heat pump approach the heat system and the control method of methane-generating pit.
Background technology
Biogas is the renewable energy source that is adapted at the Chinese countryside utilization and extention.But cold season the methane tank gas production amount seldom, even anaerogenic problem has seriously restricted biogas in the using and promoting of rural area, its major cause is that envrionment temperature is low excessively, has reduced the activity of methane fermentating microorganism.
In certain temperature range, temperature has the forward promoter action to fermentation efficiency, so rationally controlled temperature is very important in following biogas engineering.Generally speaking, the biogas bacterium can both be fermented in 8～60 ℃ of scopes.10～26 ℃ is the normal temperature fermentation district.Under this temperature condition, the pond holds factor of created gase can reach 0.15～0.30m
3/ (m
3D) (pond holds the biogas amount that factor of created gase refers to production every day of methane-generating pit unit volume); 28～38 ℃ are mesophilic digestion district (optimum temperuture is 35 ℃), and the pond holds factor of created gase can reach 1.0m
3/ (m
3D) about; 46～60 ℃ is the thermophilic fermentation district, and the pond holds factor of created gase can reach 2.0～2.5m
3/ (m
3D).Therefore,, the Chi Wenzai of methane-generating pit is reached cold season and remain on a suitable level, just can guarantee the gas production rate of biogas if a kind of heating method is arranged.
The methane-generating pit heating mode mainly contains following 6 kinds at present: electricity heating, solar energy heating, fossil energy hot water boiler are heated, methane boiler is heated, the marsh gas power generation waste heat adds gentle combustion pond formula and heats.
The electricity heating technology adopts the electric heater heat hot water, flows come heating fermentation feed liquid in the circulation tube by hot water in methane-generating pit.But this method is a cost to consume the higher-grade electric energy, and energy saving is not high; The solar energy heating system finishes the collection and the transmission of heat energy by solar thermal collection system, by solar water by the interchanger feed liquid of heating.This energy saving of system environmental protection, simple to operate can realize automatic operation, but is subject to the influence of weather conditions; It is that hot water boiler with fuel such as burning coal, oil is a thermal source that the fossil energy hot water boiler is heated, and by heat-exchange equipment fermented feed liquid is heated.But the burning of fuel can produce a large amount of flue dust and obnoxious flavour, contaminate environment, and capacity usage ratio is not high simultaneously; It is a part of biogas that firing system self produces that methane boiler is heated, and the high-temperature flue gas that burning produces flows in the reactor bottom pipeline, and then heats to methane-generating pit, and this method efficient height of heating requires than higher equipment and operative technique simultaneously; It is in biogas cogeneration engineering that the marsh gas power generation waste heat is heated, gas internal-combustion engine will discharge 600 ℃ gas nearly in the time of the generating set generating, contain a large amount of waste heats in the high-temperature gas, with waste heat heating fermentation raw material, generally only be applied to the large-sized biogas engineering by the interchanger in the residual neat recovering system; It is a kind of subterranean melt pit that fuel glows that carries out that is arranged on that combustion pond formula is heated, and fuel carries out lingering in the pond, and can to remain on mesophilic digestion temperature required according to regulating for Chi Gai and pool wall surface.The disposable input inferior fuel of this method is winter of incendivity, need not labor management, generally is used for the residents biogas engineering.
Above heating mode respectively has relative merits, but actual from medium-scale plant wastewater treatment engineering, the present heating mode of economical rationality without comparison, energy-conserving and environment-protective still.
Summary of the invention
The object of the present invention is to provide a kind of land used source/air source heat pump approach the heat system and the control method of methane-generating pit.Be thermal source promptly, feed liquid heated by earth source heat pump/air source heat pump heating system with Geothermal energy and air heat energy.Under the prerequisite that guarantees factor of created gase, improved energy utilization rate and reduced construction cost.Wherein earth source heat pump mainly uses in cold season, and air source heat pump mainly uses in warm season, avoids the cold season that air source heat pump may the dewfall frosting and uses.
Principle of work of the present invention is as follows: in cold season, outdoor medial temperature was lower than 20 ℃ in continuous ten days, enables the earth source heat pump unit underground and recirculated water are carried out heat exchange; When external temperature was higher than 20 ℃ in continuous ten days, enable net for air-source heat pump units air and methane-generating pit recirculated water carries out heat exchange and be to replenish underground heat when underground medial temperature is lower than 17 ℃.And then circulating water temperature is improved, again by earth source heat pump/air source heat pump being imported a spot of higher-grade electric energy, realize that low-temperature heat energy is to the high temperature bit transition, and then make earth source heat pump unit/net for air-source heat pump units leaving water temperature(LWT) reach about 45 ℃, hot water is in hot coil, carry out heat exchange with fermentation raw material in the mode of radiation and convection current and the methane-generating pit, the methane-generating pit temperature is remained in the mesophilic digestion scope.It is temp autocontrolled that automatic temperature control reality is installed, when temperature in the methane-generating pit is reduced to below 35 ℃, earth source heat pump/net for air-source heat pump units starts automatically,, fermentation raw material is heated in the hot water of phreatic transfer of heat in the methane-generating pit medium heat disk pipe by consumed power again; The water-in and water-out temperature difference of local source/net for air-source heat pump units satisfies the temperature of 7.5 ℃ and methane-generating pit in the time of 35 ℃, and ground source/net for air-source heat pump units will quit work automatically.
The system that land used source/air source heat pump approach that the present invention proposes is heated methane-generating pit is made up of underground loop 10, air-cooled equipment 9, the public unit of Di Yuan/air source heat pump and Controlling System, wherein:
Source/air source heat pump public unit in ground comprises compressor 6 and condenser 7; First vaporizer 5, compressor 6, condenser 7 and second vaporizer 8 form the enclosed passage successively by pipe connection; The output terminal of first vaporizer 5 connects underground loop 10, and input terminus connects ground source magnetic valve 1, the first vaporizer 5 and connects air-cooled equipment 9 formation enclosed passages by air source magnetic valve 2; Be connected to first magnetic valve, 3, the first magnetic valves, 3 the other ends on underground loop 10 output terminals and the pipeline that ground source magnetic valve 1 is connected and connect condenser 7 input terminuss, the input terminus of underground loop 10 connects the output terminal of condensers 7 by second magnetic valve 4;
Controlling System is made up of environment temperature sensor 11, soil medial temperature transmitter 12, earth source heat pump unit leaving water temperature(LWT) transmitter 13, earth source heat pump unit inflow temperature transmitter 14, methane-generating pit temperature sensor 15, signal generator, performer, micro-chip 25 and computer 26; Environment temperature sensor 11 connects micro-chip 25 by first signal generator 16, and ground source magnetic valve 1 connects micro-chip 25 by first performer 21 and constitutes the loop line; Air source magnetic valve 2 connects micro-chip 25 by second performer 22 and constitutes the loop line; First magnetic valve 3 connects micro-chip 25 by the 3rd performer 23 and constitutes the loop line; Second magnetic valve 4 connects micro-chip 25 by the 4th performer 24 and constitutes the loop line; Soil medial temperature transmitter 12 connects the input terminus of micro-chip 25 by second signal producer 17, earth source heat pump unit leaving water temperature(LWT) transmitter 13 connects the input terminus of micro-chip 25 by the 3rd signal generator 18, earth source heat pump unit inflow temperature transmitter 14 is by the input terminus of the 4th signal generator 19 connection micro-chips 25, and methane-generating pit temperature sensor 15 connects the input terminus of micro-chips 25 by the 5th signal generator 20; Micro-chip 25 connects computer 26.
Among the present invention, described underground loop 10 is ground pipe laying and valve, and described air-cooled equipment 9 is blower fan.
The heat control method of methane-generating pit of land used source/air source heat pump approach that the present invention proposes, concrete steps are as follows:
(1) environment temperature sensor 11 collecting temperature signals send digital signal corresponding and are transferred to micro-chip 25 by first signal generator 16, digital conversion through micro-chip 25 is recorded in the computer 26, adopt corresponding programanalysis temperature data, when program finds that the environment medial temperature was lower than 20 ℃ in continuous ten days, send steering order, performer operation command adapted thereto is realized 1 unlatching of ground source magnetic valve, source magnetic valve 2, first magnetic valve 3 and second magnetic valve 4 are closed, and be the operating mode of thermal source with the underground this moment; When the operating mode that with the underground is thermal source is carried out, unit and discontinuous operation.Earth source heat pump unit inflow temperature transmitter 14, earth source heat pump unit leaving water temperature(LWT) transmitter 13 and methane-generating pit temperature sensor 15 collecting temperature signals are respectively by the 4th signal generator 19, the 3rd signal generator 18 and the 5th signal generator 20 send digital signal corresponding and are transferred to micro-chip 25, and transfer to computer 26, if computer 26 programs are found the earth source heat pump unit and are advanced, go out water temperature difference and satisfy 7.5 ℃, and the temperature of methane-generating pit is sent instruction in the time of 35 ℃, the action of performer commence operation, feasible ground source magnetic valve 1, air source magnetic valve 2, first magnetic valve 3 and second magnetic valve 4 are all closed, thereby realize that heating system stops heating;
(2) environment temperature sensor 11 collecting temperature signals send digital signal corresponding and are transferred to micro-chip 25 by first signal generator 16, digital conversion through micro-chip 25 is recorded in the computer 26, corresponding programanalysis temperature data, when program finds that the environment medial temperature was higher than 20 ℃ in continuous ten days, send steering order, performer operation command adapted thereto is realized 2 unlatchings of air source magnetic valve, ground source magnetic valve 1, first magnetic valve 3 and second magnetic valve 4 are all closed, and be the operating mode of thermal source with the outside air this moment; When the operating mode that with the outside air is thermal source is carried out, unit and discontinuous operation.Earth source heat pump unit inflow temperature transmitter 14, earth source heat pump unit leaving water temperature(LWT) transmitter 13 and methane-generating pit temperature sensor 15 collecting temperature signals are respectively by the 4th signal generator 19, the 3rd signal generator 18 and the 5th signal generator 20 send digital signal corresponding and are transferred to micro-chip 25, and transfer to computer 26, if computer 26 programs are found the earth source heat pump machine and are advanced, go out water temperature difference and satisfy 7.5 ℃, and the temperature of methane-generating pit is sent instruction in the time of 35 ℃, the action of performer commence operation, feasible ground source magnetic valve 1, air source magnetic valve 2, first magnetic valve 3 and second magnetic valve 4 are all closed, thereby realize that heating system stops heating;
(3) environment temperature sensor 11 and soil medial temperature transmitter 12 collecting temperature signals are respectively by first signal generator 16, second signal producer 17 sends digital signal corresponding and is transferred to micro-chip 25, digital conversion through micro-chip 25 is recorded in the computer 26, corresponding programanalysis temperature data, find the environment medial temperature when program and be higher than 20 ℃ in continuous ten days, and when being lower than 17 ℃, the soil medial temperature sends steering order, air source magnetic valve 2 is opened, ground source magnetic valve 1, first magnetic valve 3 and second magnetic valve 4 are closed, computer 26 programs of working after 2 hours are sent instruction, performer sends action, realize air source magnetic valve 2, first magnetic valve 3 and second magnetic valve 4 are opened, ground source magnetic valve 1 cuts out, and uses the underground heat of outside air heat supplement this moment.
Advantage of the present invention: (1) adopts earth source heat pump of the present invention/air source heat pump approach methane-generating pit technology of heating, and can adopt field assembly conveniently to realize, and is simple in structure, practical safe ready; (2) earth source heat pump/air source heat pump heating system can move automatically, and is simple to operate, well utilized soil heat, and energy consumption is little; (3) need not fuel, do not pollute, be not subjected to weather effect.
Description of drawings
Fig. 1 is earth source heat pump/air source heat pump approach methane-generating pit system chart of heating.
Fig. 2 is the heat Controlling System block diagram of methane-generating pit system of earth source heat pump/air source heat pump approach for Fig. 1.
Number in the figure: 1 is ground source magnetic valve; 2 is air source magnetic valve; 3 is first magnetic valve; 4 is second magnetic valve; 5 is first vaporizer; 6 is compressor; 7 is condenser; 8 is second vaporizer; 9 is air-cooled equipment; 10 is underground loop; 11 is environment temperature sensor; 12 is soil medial temperature transmitter; 13 is earth source heat pump unit leaving water temperature(LWT) transmitter; 14 is earth source heat pump unit inflow temperature transmitter; 15 is the methane-generating pit temperature sensor; 16-20 is respectively first signal generator, second signal producer, the 3rd signal generator, the 4th signal generator and the 5th signal generator; 21-24 is respectively first performer, second performer, the 3rd performer and the 4th performer; 25 is micro-chip (data acquisition board); 26 is computer.
Embodiment
Further describe the present invention in conjunction with the accompanying drawings below by embodiment.
Embodiment 1: as Fig. 1-shown in Figure 2, native system is made up of underground loop 10, air-cooled equipment 9, the public unit of Di Yuan/air source heat pump and Controlling System, controlled variable collecting part in the Controlling System comprises environment temperature sensor 11, soil medial temperature transmitter 12, earth source heat pump unit leaving water temperature(LWT) transmitter 13, earth source heat pump unit inflow temperature transmitter 14 and methane-generating pit temperature sensor 15, is DS18B20 temperature sensor collecting temperature signal.Methane-generating pit temperature control part branch is made up of signal generator, performer, micro-chip 25 and computer 26 in the Controlling System, connects by the R232 interface signal line between micro-chip 25 and the computer 26, and rest part directly links to each other by signal wire, realizes controlling automatically.Underground loop 10 is ground pipe laying and some valves, and air-cooled equipment 9 is a blower fan, and the two serves as vaporizer in the unit four big parts (condenser 7, compressor 6, first vaporizer 5 and second vaporizer 8) in heating mode; The unit common part is made up of compressor 6 and condenser 7, is the common part of two kinds of different unit warm up mode.First vaporizer 5, compressor 6, condenser 7 and second vaporizer 8 are docile and obedient preface and are coupled together by copper pipe, form the enclosed passage; Refrigeration agent flows therein, is embodied as methane-generating pit with contrary Carnot's principle circulation and heats.Controlling System mainly by the open and close of control magnetic valve, is controlled the open and close of total system, the switching of operational mode etc.The output terminal of first vaporizer 5 connects underground loop 10, and input terminus connects ground source magnetic valve 1, the first vaporizer 5 and connects air-cooled equipment 9 formation enclosed passages by air source magnetic valve 2; Be connected to first magnetic valve, 3, the first magnetic valves, 3 the other ends on underground loop 10 output terminals and the pipeline that ground source magnetic valve 1 is connected and connect condenser 7 input terminuss, the input terminus of underground loop 10 connects the output terminal of condensers 7 by second magnetic valve 4.
Air source heat pump system was opened 4 hours every day, wherein was used in 2 hours heating to methane-generating pit, be used in other 2 hours an air heat be sent to underground, to replenish the heat of cold season from underground extraction.
Controlling System comprises: controlled variable acquisition system, methane-generating pit temperature controlling system and warm up mode handover control system.
1, the controlled variable acquisition system is by methane-generating pit temperature, the methane-generating pit hot coil Inlet and outlet water temperature difference and the control of environment medial temperature.Acquisition instrument is temperature sensor and micro-chip, border temperature sensor 11, soil medial temperature transmitter 12, earth source heat pump unit leaving water temperature(LWT) transmitter 13, earth source heat pump unit inflow temperature transmitter 14 all are connected with micro-chip 25 by signal wire with methane-generating pit temperature sensor 15, numerary signal is sent to micro-chip 25, and then computer 26 control platform corresponding data acquisition and analysis platform receive and carry out the master mode of setting after the control signal and realize controlled function.
2, methane-generating pit temperature controlling system operating mode is: after the controlled variable acquisition system is gathered the temperature and the hot coil water-in and water-out temperature difference of methane-generating pit, if the water-in and water-out temperature difference satisfies the temperature of 7.5 ℃ and methane-generating pit in the time of 35 ℃, heating system stops heating, otherwise heating system starts.
3, the controlled variable acquisition system is gathered outdoor medial temperature, the underground medial temperature waits the conversion warm up mode.Warm up mode has following 3 kinds:
1) when the environment medial temperature was lower than 20 ℃ in continuous ten days, ground source magnetic valve 1 is opened, and air source magnetic valve 2, first magnetic valve 3 and second magnetic valve 4 are closed, and be the operating mode of thermal source with the underground this moment;
2) air source side magnetic valve 2 is opened when the environment medial temperature was higher than 20 ℃ in continuous ten days, and ground source magnetic valve 1, first magnetic valve 3 and second magnetic valve 4 are closed, and be the operating mode of thermal source with the outside air this moment;
3) when the environment medial temperature was higher than 20 ℃ and underground medial temperature in continuous ten days and is lower than 17 ℃, air source magnetic valve 2 is opened, ground source magnetic valve 1, first magnetic valve 3 and second magnetic valve 4 are closed, work to switch to after 2 hours and open air source magnetic valve 2, first magnetic valve 3 and second magnetic valve 4, close ground source magnetic valve 1, use the underground heat of outside air heat supplement this moment.
Among the present invention, methane-generating pit is about temperature under the effect of heating system can remain on (35 ± 2) ℃, and in the scope of mesophilic digestion, factor of created gase can remain on 0.6m
3/ (m
3D) about.Sometimes leavening temperature can arrive 35 ℃, and factor of created gase reaches 1.1m
3/ (m
3D).
Among the present invention, earth source heat pump unit heating efficiency (COP) remains on about 3.6, and system COP is about 2.7, and the primary energy consumption of system is less, and the primary energy source utilization coefficient can reach 0.84, and comparing fractional energy savings with the Electric radiant Heating Film heating system is 63%.
Said system is used to have 300 livestock on hand pigs, and daily output tolerance is 36m
3, for 30 tame user's small practical central gas supply engineerings, this methane-generating pit useful volume is 69.3m
3The methane-generating pit interior dimensions is 3.8m * 3.8m * 4.8m (length * wide * height), at the bottom of the pond and pool wall add the thick heat preserving and insulating material that closes bubble polyphenyl foam plate of 7cm, weakened the thermal conduction of methane-generating pit and the earth, air.The covered with plastic film insulation of methane-generating pit top, wide coverage is beneficial to insulation in the pond face.Lay the warming dish pipe at the methane-generating pit inwall along wall and be used for heating.The coil pipe of heating adopts the PERT tubing of φ 25*2.8, coil pipe length overall 200m, coil pipe spacing 200mm.Heat passage in order to accelerate feed liquid, improve heating effect, at methane-generating pit whipping appts has been installed.High 0.8m place stirrer of installation stirs at the bottom of the spacing pond in methane-generating pit one sidewall.The parameter of stirrer is: rated output 2.5kw, the nominal operation frequency is 50Hz, rotating speed 740r/min.The earth source heat pump unit is 10.2kw/380V.
The earth-source hot-pump system 1.5h that works average every day wherein, intermittent operation can be alleviated the hot unbalance of underground temperature field.
The methane-generating pit temperature remains on about (32 ± 2) ℃, and factor of created gase can remain on 0.6m
3/ (m
3D) about, be national Specification value 0.2～0.4m
3/ (m
3D) 1.5～3 times.
Claims (3)
1. land used source/air source heat pump approach system of methane-generating pit that heats, by underground loop (10), air-cooled equipment (9), the public unit of source/air source heat pump and Controlling System form, it is characterized in that:
Source/air source heat pump public unit in ground comprises compressor (6) and condenser (7); First vaporizer (5), compressor (6), condenser (7) and second vaporizer (8) form the enclosed passage successively by pipe connection; The output terminal of first vaporizer (5) connects underground loop (10), and input terminus connects ground source magnetic valve (1), and first vaporizer (5) connects air-cooled equipment (9) by air source magnetic valve (2) and forms the enclosed passage; Be connected to first magnetic valve (3) on underground loop (10) output terminal and the pipeline that ground source magnetic valve (1) is connected, first magnetic valve (3) the other end connects condenser (7) input terminus, and the input terminus of underground loop (10) connects the output terminal of condenser (7) by second magnetic valve 4;
Controlling System is made up of environment temperature sensor (11), soil medial temperature transmitter (12), earth source heat pump unit leaving water temperature(LWT) transmitter (13), earth source heat pump unit inflow temperature transmitter (14), methane-generating pit temperature sensor (15), signal generator, performer, micro-chip (25) and computer (26); Environment temperature sensor (11) connects micro-chip (25) by first signal generator (16), and ground source magnetic valve (1) connects micro-chip (25) by first performer (21) and constitutes the loop line; Air source magnetic valve (2) connects micro-chip (25) by second performer (22) and constitutes the loop line; First magnetic valve (3) connects micro-chip (25) by the 3rd performer (23) and constitutes the loop line; Second magnetic valve (4) connects micro-chip (25) by the 4th performer (24) and constitutes the loop line; Soil medial temperature transmitter (12) connects the input terminus of micro-chip (25) by second signal producer (17), earth source heat pump unit leaving water temperature(LWT) transmitter (13) connects the input terminus of micro-chip (25) by the 3rd signal generator (18), earth source heat pump unit inflow temperature transmitter (14) is by the input terminus of the 4th signal generator (19) connection micro-chip (25), and methane-generating pit temperature sensor (15) connects the input terminus of micro-chip (25) by the 5th signal generator (20); Micro-chip (25) connects computer (26).
2. the heat system of methane-generating pit of land used according to claim 1 source/air source heat pump approach is characterized in that described underground loop (10) is ground pipe laying and valve, and described air-cooled equipment (9) is blower fan.
3. land used as claimed in claim 1 source/air source heat pump approach control method of system of methane-generating pit of heating is characterized in that concrete steps are as follows:
(1) environment temperature sensor (11) collecting temperature signal sends digital signal corresponding and is transferred to micro-chip (25) by first signal generator (16), digital conversion through micro-chip (25) is recorded in the computer (26), adopt corresponding programanalysis temperature data, when program finds that the environment medial temperature was lower than 20 ℃ in continuous ten days, send steering order, performer operation command adapted thereto is realized ground source magnetic valve (1) unlatching, source magnetic valve (2), first magnetic valve (3) and second magnetic valve (4) are closed, and be the operating mode of thermal source with the underground this moment; When the operating mode that with the underground is thermal source is carried out, unit and discontinuous operation; Earth source heat pump unit inflow temperature transmitter (14), earth source heat pump unit leaving water temperature(LWT) transmitter (13) and methane-generating pit temperature sensor (15) collecting temperature signal are respectively by the 4th signal generator (19), the 3rd signal generator (18) and the 5th signal generator (20) send digital signal corresponding and are transferred to micro-chip (25), and transfer to computer (26), if computer (26) program is found the earth source heat pump unit and is advanced, go out water temperature difference and satisfy 7.5 ℃, and the temperature of methane-generating pit is sent instruction in the time of 35 ℃, the action of performer commence operation, feasible ground source magnetic valve (1), air source magnetic valve (2), first magnetic valve (3) and second magnetic valve (4) are all closed, thereby realize that heating system stops heating;
(2) environment temperature sensor (11) collecting temperature signal sends digital signal corresponding and is transferred to micro-chip (25) by first signal generator (16), digital conversion through micro-chip (25) is recorded in the computer (26), corresponding programanalysis temperature data, when program finds that the environment medial temperature was higher than 20 ℃ in continuous ten days, send steering order, performer operation command adapted thereto is realized air source magnetic valve (2) unlatching, ground source magnetic valve (1), first magnetic valve (3) and second magnetic valve (4) are all closed, and be the operating mode of thermal source with the outside air this moment; When the operating mode that with the outside air is thermal source is carried out, unit and discontinuous operation; Earth source heat pump unit inflow temperature transmitter (14), earth source heat pump unit leaving water temperature(LWT) transmitter (13) and methane-generating pit temperature sensor (15) collecting temperature signal are respectively by the 4th signal generator (19), the 3rd signal generator (18) and the 5th signal generator (20) send digital signal corresponding and are transferred to micro-chip (25), and transfer to computer (26), if computer (26) program is found the earth source heat pump machine and is advanced, go out water temperature difference and satisfy 7.5 ℃, and the temperature of methane-generating pit is sent instruction in the time of 35 ℃, the action of performer commence operation, feasible ground source magnetic valve (1), air source magnetic valve (2), first magnetic valve (3) and second magnetic valve (4) are all closed, thereby realize that heating system stops heating;
(3) environment temperature sensor (11) and soil medial temperature transmitter (12) collecting temperature signal are respectively by first signal generator (16), second signal producer (17) sends digital signal corresponding and is transferred to micro-chip (25), digital conversion through micro-chip (25) is recorded in the computer (26), corresponding programanalysis temperature data, find the environment medial temperature when program and be higher than 20 ℃ in continuous ten days, and when being lower than 17 ℃, the soil medial temperature sends steering order, air source magnetic valve (2) is opened, ground source magnetic valve (1), first magnetic valve (3) and second magnetic valve (4) are closed, computer (26) program of working after 2 hours is sent instruction, performer sends action, realize air source magnetic valve (2), first magnetic valve (3) and second magnetic valve (4) are opened, ground source magnetic valve (1) cuts out, and uses the underground heat of outside air heat supplement this moment.
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| CN102297545A (en) * | 2011-06-24 | 2011-12-28 | 清华大学 | Heating system of CO2 sequestering |
| CN102705984A (en) * | 2012-05-25 | 2012-10-03 | 浙江和盛节能科技有限公司 | Device for synchronously supply heat to water source heat pump from geothermal energy and air energy |
| CN102981531A (en) * | 2012-11-27 | 2013-03-20 | 上海电机学院 | Timing temperature control device for biogas |
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| CN102297545A (en) * | 2011-06-24 | 2011-12-28 | 清华大学 | Heating system of CO2 sequestering |
| CN102705984A (en) * | 2012-05-25 | 2012-10-03 | 浙江和盛节能科技有限公司 | Device for synchronously supply heat to water source heat pump from geothermal energy and air energy |
| CN102705984B (en) * | 2012-05-25 | 2014-08-06 | 何斌 | Device for synchronously supply heat to water source heat pump from geothermal energy and air energy |
| CN102981531A (en) * | 2012-11-27 | 2013-03-20 | 上海电机学院 | Timing temperature control device for biogas |
| CN103234272A (en) * | 2013-04-24 | 2013-08-07 | 同济大学 | Heating system for garage type dry fermentation and operation control method thereof |
| CN103234272B (en) * | 2013-04-24 | 2015-06-03 | 同济大学 | Heating system for garage type dry fermentation and operation control method thereof |
| CN105864938A (en) * | 2016-04-29 | 2016-08-17 | 云南师范大学 | New energy air-conditioning method for constructing houses with extremely-low energy consumption in new countryside |
| CN105864938B (en) * | 2016-04-29 | 2018-10-16 | 云南师范大学 | It can be used for the new energy air-conditioning method of new countryside construction pole low energy-consumption house |
| CN106225310A (en) * | 2016-07-15 | 2016-12-14 | 烟台荏原空调设备有限公司 | The control method of a kind of multi-heat source, device and absorption refrigeration unit |
| CN106225310B (en) * | 2016-07-15 | 2018-08-14 | 荏原冷热系统（中国）有限公司 | A kind of control method of multi-heat source, device and absorption refrigeration unit |
| CN114061158A (en) * | 2020-07-30 | 2022-02-18 | 思达新能(北京)节能技术有限公司 | Artificial underground circulation ditch heat energy source heat exchange method |
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Application publication date: 20110216 |