CN203257561U - Combined cooling, heating and power system based on Stirling engine - Google Patents
Combined cooling, heating and power system based on Stirling engine Download PDFInfo
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- CN203257561U CN203257561U CN 201320257396 CN201320257396U CN203257561U CN 203257561 U CN203257561 U CN 203257561U CN 201320257396 CN201320257396 CN 201320257396 CN 201320257396 U CN201320257396 U CN 201320257396U CN 203257561 U CN203257561 U CN 203257561U
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Abstract
The utility model discloses a combined cooling, heating and power system based on a Stirling engine. The combined cooling, heating and power system comprises a combustion unit, the Stirling engine, an electricity unit, a refrigerating unit, a center heating unit, a cooling water circulating unit and an automatic control unit. The combined cooling, heating and power system avoids loss of energy in a long-distance transmission process, enhances energy supply efficiency, saves energy, lowers energy use cost of users, improves safety and economical efficiency of the whole system, and shortens maintenance time of equipment. Compared with a common combined cooling, heating and power system, the combined cooling, heating and power system has the advantages that the combined cooling, heating and power technology increases the requirement for heat (used for refrigeration of an absorption refrigerating machine) and is greatly beneficial to resolving the problem that the requirement for heat in summer is insufficient and improving the economical efficiency of the system; meanwhile, by the adoption of a current condenser, a hot water tank, an auxiliary burner and the like, the heat-to-electric ratio is adjustable, the whole system is flexible and variable, and the combined cooling, heating and power system can be sufficiently suitable for different operating environments.
Description
Technical field
The utility model relates to a kind of cogeneration cooling heating system, and particularly the cold, heat and electricity three-way of a kind of refrigeration based on Stirling engine, heat production and generating produces system.
Background technique
Cold-hot electirc linking meets using energy source " temperature counterpart, cascade utilization " principle, and it has improved the terminal energy sources utilization ratio significantly, therefore more and more is subjected to people's attention.
Because of the restriction of the factors such as environmental pollution, traffic and water source, large-scale power plant can only satisfy in relatively single mode user's demand generally away from down town and load centre.Yet the user not only needs electric energy, also needs other forms of energy, as supplying warm air-conditioning demand etc.But because the unsuitable remote transmission of heating medium and refrigerant, so central station is difficult for realizing cold-hot electirc linking.
Stirling engine take pluralities of fuel as the energy all has very important significance at aspects such as solving energy shortage, environmental contamination reduction and military field.Along with a large amount of exploitations, especially pipe natural gas the popularizing in cities and towns of rock gas, for the cogeneration cooling heating system based on Stirling engine provides sufficient, cheap gas material.
Cogeneration cooling heating system based on Stirling engine, the characteristics that not only have distributed energy system, but also have the characteristics such as higher energy utilization rate, system are relatively simple, waste heat reclaims easily, overall economic efficiency is good, be highly suitable for carrying out and application of China.Yet, producing system owing to the restriction of working principle based on the cold, heat and electricity three-way of Stirling engine, the water-exit temperature of unit does not have gas turbine and internal-combustion engine height, and the waste heat grade is lower, and heating load is little, has limited to a certain extent its application area.System based on the cogeneration of heat and power of this special motor in the known technology is more, and for family and small business users, heat energy generally recycles by the mode that produces hot water.But when the user without heat demand or heat demand hour, technological scheme all adopts when satisfying electricity needs unnecessary gas of combustion heat is discharged mostly, does like this and has greatly wasted the energy.
The model utility content
For above-mentioned technical problem, the purpose of this utility model provides a kind of cogeneration cooling heating system based on Stirling engine of simple in structure, energy-efficient, easy care.
For achieving the above object, the utility model adopts following technological scheme:
A kind of cogeneration cooling heating system based on Stirling engine comprises fuel element, Stirling engine, power unit, refrigeration unit, heating unit, cooling water circulation unit and automatic control unit;
Described fuel element comprises the first burner by the gas pipeline air feed, the high-temperature flue gas that described the first burner produces flows into the high temperature hot junction of described Stirling engine, flows into the second heat exchanger through the flue gas stream again and carries out being disposed to ambient atmosphere by blower after the heat exchange;
Described power unit comprises the generator that is connected with the output terminal of described Stirling engine, and the electric storage means that is used for stored electric energy that is connected with described generator circuit;
Described cooling water circulation unit comprises the second water tank that connects running water pipe, cooling water in the second water tank is by the low temperature cold junction of cooling water pipeline input Stirling engine, then through water pump input the second heat exchanger carry out heat exchange by cross fitting input respectively heat storage tank, as the Absorption Refrigerator of refrigeration unit, as the heating device of heating unit, wherein, the cooling water of Absorption Refrigerator, heating device converges by three-way pipe in output terminal and is connected with heat storage tank and the second water tank respectively, and described heat storage tank also is provided with overflow pipe and hot water outlet pipe;
Described automatic control system comprises: be arranged on mortor operated valve V-9 on the second water tank output tube, the temperature transducer TIC by sensing low temperature cold junction cooling water outlet temperature control mortor operated valve V-9 aperture
3Be separately positioned on mortor operated valve V-6, mortor operated valve V-7 on the pipeline between three-way pipe and heat storage tank and the second water tank, and control the temperature transducer TIC that mortor operated valve V-6, mortor operated valve V-7 open and close by sensing three-way pipe place cooling water temperature
2
Further, also be connected with between described flue gas stream and the second heat exchanger for the high-temperature flue gas in ambient air and the flue gas stream being carried out heat exchange and being delivered to the First Heat Exchanger of the first burner.
Further, described fuel element also comprises the auxiliary burner on the cooling water pipeline that is arranged between the second heat exchanger and the cross fitting.
Further, described automatic control system also comprises the temperature transducer TIC by the water temperature control auxiliary burner switching of sensing auxiliary burner waterexit end
1
Further, described automatic control system also comprises the mortor operated valve V-8 that is arranged on the running water pipe, and controls the liquid level sensor LIC that mortor operated valve V-8 opens and closes by the cooling water height of water level in sensing the second water tank
2
Further, described automatic control system also comprises the mortor operated valve V-5 on the cooling water pipeline that is arranged between cross fitting and the heat storage tank, and controls the liquid level sensor LIC that mortor operated valve V-5 opens and closes by the cooling water height of water level in the sensing heat storage tank
1
Further, described the second heat exchanger is the flue gas condensing heat exchanger.
Further, described electric storage means is in parallel or be in series by a storage battery or more than one storage battery.
Further, described Absorption Refrigerator is lithium-bromide absorption-type refrigerating machine, and described heating device is radiator for floor heating or radiator.
Further, be provided with stop valve V-2 on the cooling water pipeline between described cross fitting and the absorption heat exchange device; Be provided with stop valve V-3 on the cooling water pipeline between described cross fitting and the heating device; Be provided with stop valve V-4 on the described hot water outlet pipe.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model system has avoided the loss of energy in the long Distance Transmission process because being positioned near or the load centre of user, has improved the confession energy efficiency, has saved the energy, has reduced user's usefulness energy cost;
(2) the utility model has adopted the mechanism of energy " cascade utilization ", have very high capacity usage ratio: high-grade energy is used for generating, the energy of middle grade is mainly used in refrigeration or heating and assisted Extraction domestic hot-water supply, and low-grade energy is used for providing the domestic hot-water; By the control of valve, under the prerequisite that guarantees the minimum reserves of domestic hot-water, optionally provide electric power, supply one or several energy-provision way in the warm refrigeration simultaneously, improved significantly terminal energy sources efficient;
(3) the utility model has improved Security, the Economy of whole system by the control of automatic monitor and communication system, has reduced the engineering time of equipment;
(4) the utility model can provide high quality continual electric energy by utilizing battery energy storage system, and this function has splendid using value for those enterprises and institutions that can't accept to have a power failure, commercial and industrial user aspect health, safety and economic dispatch; And because electric energy is stored in the battery, so even the utility model is not so that exist in the situation of heat or cold demand, Stirling engine also can be with its maximum power output services;
(5) compare with common co-generation unit, the utility model cold, heat and electricity three-way product technology has increased heat demand (being used for the Absorption Refrigerator cooling), and this is for the Economy that solves summer fever demand deficiency, raising system, and is of great advantage.Simultaneously, by introducing the means such as electric storage means, hot water tank and auxiliary burner, realized that thermoelectricity than adjustable, makes whole system flexible and changeable, be enough to adapt to different Environmental Conditions.
Description of drawings
Fig. 1 is the cogeneration cooling heating system formation schematic representation according to an embodiment of the present utility model.
Shown in the figure be: 1 gas pipeline; 2 First Heat Exchangers; 3 first burners; 4 Stirling engines; 5 generators; 6 electric storage means; 7 second heat exchangers; 8 blowers; 9 auxiliary burners; 10 Absorption Refrigerators; 11 heating devices; 12 heat storage tanks; 13 overflow pipes; 14 hot water outlet pipes; 15 second water tanks; 16 tap water; 17 water pumps; 18 flue gas channel; 19 high temperature hot junctions; 20 low temperature cold junctions; 21 three-way pipes; 22 cross fittings; V-1～V-4: stop valve; V-5～V-9: mortor operated valve.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Need to prove that accompanying drawing only is used for exemplary illustration, can not be interpreted as the restriction to this patent; To those skilled in the art, in the accompanying drawing some known configurations and explanation thereof may to omit be understandable.
As shown in Figure 1, the gaseous fuels such as rock gas that come from the gas pipeline 1 enter burning in the first burner 3 through stop valve V-1 with the hot air after First Heat Exchanger 2 heating, and the high-temperature flue gas of generation enters the high temperature hot junction 19 of Stirling engine 4 it is heated.19 flue gases that flow out enter the second heat exchanger 7 behind First Heat Exchanger 2 from Stirling engine high temperature hot junction, again heat are passed to current through the flue gas of twice heat exchange therein, and the gas of combustion of last heat exchange is disposed to ambient atmosphere after blower 8 absorbs.
Current in the second heat exchanger 7 are driven by circulation power mechanism water pump 17, and these current enter the pipeline that there is auxiliary burner 9 outside, the cross fitting 22 of then flowing through after flowing out from the second heat exchanger 7.
Current are divided into three the tunnel at cross fitting 22 places:
A. through flowing to heat storage tank 12 behind the mortor operated valve V-5, it is used that the hot water in the heat storage tank 12 can be daily life, and heat storage tank 12 also comprises life hot water discharge system 14 and an overflow pipe 13;
B. through flowing into Absorption Refrigerator 10 behind the stop valve V-2, to discharge after the generator heat exchange of itself and Absorption Refrigerator 10, this Absorption Refrigerator 10 is lithium-bromide absorption-type refrigerating machine.Can produce a large amount of low temperature water by lithium-bromide absorption-type refrigerating machine herein, this low temperature water can be used for air-conditioning equipment;
C. through entering the heating unit behind the stop valve V-3, in described heating unit, hot water is passed to radiator 11 with the form of convection current with heat, radiator 11 passes to outer wall with heat from inwall by the heat conduction of self, and outer wall is with the air of the mode heating space of convection current, wall (the body of wall that comprises in the form heating space with radiation simultaneously, furniture, human body etc.), make the room be elevated to certain temperature.
Wherein the A road arranges a mortor operated valve V-5, and it is by receiving sensor LIC
1Signal, automatically control the reserves of domestic hot-water in the heat storage tank 12.Liquid level sensor LIC
1Be arranged in the heat storage tank 12.Specific operation are: when the water level in the heat storage tank 12 is lower than a specified value, automatically open mortor operated valve V-5, hot water is entered in the heat storage tank, thereby satisfy at any time user domestic hot-water's demand; But after water level surpasses specified value, autoshutdown mortor operated valve V-5.The water that is cooled in B road, the C road optionally is disposed in heat storage tank 12 or the second water tank 15 at three-way pipe 21 places.The temperature transducer TIC of this operation by arranging
2Send signal and automatically controlled by mortor operated valve V-6 and V-7.Namely as temperature transducer TIC
2When detecting water temperature and surpassing a setting value, then close mortor operated valve V-7, open mortor operated valve V-6, thus with the hot water emission of higher temperature to heat storage tank 12; Otherwise, close mortor operated valve V-6, open mortor operated valve V-7, in hot water emission's to the second water tank 15 with lower temperature.Heat storage tank 12 outer walls are provided with thermal insulating material, and the second water tank 15 is without Insulation.
Also be provided with the cooling water adding device of whole system at the second water tank 15 places, herein by liquid level sensor LIC
2Automatically control.Specific operation are: when the water yield is less than certain value in the second water tank 15, automatically open mortor operated valve V-8, replenish a certain amount of cooling water; When the water yield in the second water tank 15 satisfies system circuit and recycles, then close mortor operated valve V-8.
The water that flows out from the second water tank 15 is sent to the low temperature cold junction 20 of Stirling engine 4, after low temperature cold junction 20 heat exchange of itself and Stirling engine 4, through water pump 17 this water is delivered in the second heat exchanger 7.Low temperature cold junction 20 coolant outlet places at Stirling engine 4 arrange a temperature transducer TIC
3, this temperature transducer passes to mortor operated valve V-9 with the signal that receives, in the pipeline of mortor operated valve V-9 between the low temperature cold junction 20 of the second water tank 15 and Stirling engine 4.By the automatic adjusting of mortor operated valve V-9, make the temperature of cooling water unlikely too high, namely as temperature transducer TIC
3Monitor water temperature and surpass a specified value, can not satisfy and cool off when requiring, increase the aperture of mortor operated valve V-9, coolant flow is increased, otherwise reduce the aperture of mortor operated valve V-9, thereby the low temperature cold junction 20 that guarantees Stirling engine 4 is worked in certain temperature range.
Under normal conditions, when user's heat demand or cold demand are very large, then open auxiliary burner 9, will further heat from the hot water in the second heat exchanger 7.So far the hot water that has experienced three heating periods enters cross fitting 22 and is divided into three the tunnel, namely is used for providing domestic hot-water's A road, the C road that is used for providing the B road of cold and is used for the center heating.Aperture according to energy requirement difference adjustable cut-off valve V-2 and stop valve V-3 can obtain respectively lithium-bromide absorption-type refrigerating machine institute's calorific requirement and heating system institute calorific requirement; When user's heat demand or cold demand are little, when the heat of the hot water of the second heat exchanger 7 is enough to meet consumers' demand, then close auxiliary burner 9.The unlatching of auxiliary burner 9 or close by temperature transducer TIC
1Automatically control, temperature transducer TIC
1Also be temperature control element, it is arranged at cross fitting 22 places, namely when the water temperature that flows into cross fitting 22 is lower than a threshold values, automatically opens auxiliary burner 9 flow heated water.
The high temperature hot junction 19 of Stirling engine 4 is by the high-temperature flue gas heating from the first burner 3, and its low temperature cold junction 20 is by the water quench that flows out from the second water tank 15, thereby make Stirling engine 4 start acting, and drive generator 5 work by driving mechanism, and then with power storage in electric storage means 6.
Use above-mentioned model utility, by opening or close corresponding valve, can realize easily the conversion of cogeneration cooling heating system working state integrated, multifunctional efficient, move thereby the Stirling engine cogeneration cooling heating system is remained under the efficient state.It is characterized in that comprising following several typical mode of operation:
(1) summer cooling mode of operation: stop valve V-3 closes, and stop valve V-2 regulates its aperture according to the refrigeration duty situation.Cold can be by equipment such as air-conditionings to user's cooling, and the flow of hot water after the heat exchange is to three-way pipe 21 places, and according to its temperature by temperature transducer TIC
2Determine that it enters in heat storage tank 12 or the second water tank 15.
(2) heat supply in winter mode of operation: stop valve V-2 closes, and stop valve V-3 regulates its aperture according to the heat load situation.Heat can heat to the user, the hot water after the heat exchange according to its temperature at three-way pipe 21 places, by temperature transducer TIC
2Determine that it enters in heat storage tank 12 or the second water tank 15.
(3) supplying hot water mode of operation: when the user does not need to freeze and heats but need in the situation of massive life hot water, close stop valve V-2 and stop valve V-3, flow in heat storage tank 12 by mortor operated valve V-6 without hot water this moment.When heat storage tank 12 water levels are lower than lowest water level, by liquid level sensor LIC
1Control, the hot water that flows out from cross fitting 22 will flow directly in the heat storage tank 12 by mortor operated valve V-5.
In addition, but because the open and close of combination in any valve, system also can be in the combined running pattern.For example, when the user not only needs cooling also to need to heat, can according to the situation while adjustable cut-off valve V-2 of refrigeration duty and heat load and the aperture of stop valve V-3, produce a certain amount of cold and heat.
Obviously, the position relationship of describing in the accompanying drawing only is used for exemplary illustration, can not be interpreted as the restriction to this patent; Above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.All any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the utility model claim.
Claims (10)
1. the cogeneration cooling heating system based on Stirling engine is characterized in that: comprise fuel element, Stirling engine, power unit, refrigeration unit, center heating unit, cooling water circulation unit and automatic control unit;
Described fuel element comprises the first burner (3) by gas pipeline (1) air feed, the high-temperature flue gas that described the first burner (3) produces flows into the high temperature hot junction (19) of described Stirling engine (4), flows into through flue gas stream (18) and is disposed to ambient atmosphere by blower (8) after the second heat exchanger (7) carries out heat exchange;
Described power unit comprises the generator (5) that is connected with the output terminal of described Stirling engine (4), and the electric storage means (6) that is used for stored electric energy that is connected with described generator (5) circuit;
Described cooling water circulation unit comprises the second water tank (15) that connects running water pipe (16), cooling water in the second water tank (15) is inputted the low temperature cold junction (20) of Stirling engine (4) by cooling water pipeline, then carry out heat exchange through water pump (17) input the second heat exchanger (7) and input respectively heat storage tank (12) by cross fitting (22), Absorption Refrigerator (10) as refrigeration unit, heating device (11) as the heating unit, wherein, Absorption Refrigerator (10), the cooling water of heating device (11) converges by three-way pipe (21) in output terminal and is connected with heat storage tank (12) and the second water tank (15) respectively, and described heat storage tank (12) also is provided with overflow pipe (13) and hot water outlet pipe (14);
Described automatic control system comprises: be arranged on mortor operated valve V-9 on the second water tank (15) output tube, the temperature transducer TIC by sensing low temperature cold junction (20) cooling water outlet temperature control mortor operated valve V-9 aperture
3Be separately positioned on mortor operated valve V-6, mortor operated valve V-7 on the pipeline between three-way pipe (21) and heat storage tank (12) and the second water tank (15), and locate cooling water temperature by sensing three-way pipe (21) and control the temperature transducer TIC that mortor operated valve V-6, mortor operated valve V-7 open and close
2
2. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 is characterized in that: also be connected with between described flue gas stream (18) and the second heat exchanger (2) for the high-temperature flue gas in ambient air and the flue gas stream (18) being carried out heat exchange and being delivered to the First Heat Exchanger (2) of the first burner (3).
3. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2, it is characterized in that: described fuel element also comprises the auxiliary burner (9) on the cooling water pipeline that is arranged between the second heat exchanger (7) and the cross fitting (22).
4. a kind of cogeneration cooling heating system based on Stirling engine according to claim 3 is characterized in that: described automatic control system also comprises the temperature transducer TIC that the water temperature control auxiliary burner (9) by sensing auxiliary burner (9) waterexit end opens and closes
1
5. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2, it is characterized in that: described automatic control system also comprises the mortor operated valve V-8 that is arranged on the running water pipe (16), and controls the liquid level sensor LIC that mortor operated valve V-8 opens and closes by the cooling water height of water level in sensing the second water tank (15)
2
6. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2, it is characterized in that: described automatic control system also comprises the mortor operated valve V-5 on the cooling water pipeline that is arranged between cross fitting (22) and the heat storage tank (12), and controls the liquid level sensor LIC that mortor operated valve V-5 opens and closes by the cooling water height of water level in the sensing heat storage tank (12)
1
7. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2, it is characterized in that: described the second heat exchanger (7) is the flue gas condensing heat exchanger.
8. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2 is characterized in that: described electric storage means (6) is in parallel or be in series by a storage battery or more than one storage battery.
9. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2, it is characterized in that: described Absorption Refrigerator (10) is lithium-bromide absorption-type refrigerating machine, and described heating device (11) is radiator for floor heating or radiator.
10. a kind of cogeneration cooling heating system based on Stirling engine according to claim 1 and 2 is characterized in that: be provided with stop valve V-2 on the cooling water pipeline between described cross fitting (22) and the absorption heat exchange device (10); Be provided with stop valve V-3 on the cooling water pipeline between described cross fitting (22) and the heating device (11); Described hot water outlet pipe is provided with stop valve V-4 on (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320257396 CN203257561U (en) | 2013-05-13 | 2013-05-13 | Combined cooling, heating and power system based on Stirling engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320257396 CN203257561U (en) | 2013-05-13 | 2013-05-13 | Combined cooling, heating and power system based on Stirling engine |
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| CN 201320257396 Expired - Fee Related CN203257561U (en) | 2013-05-13 | 2013-05-13 | Combined cooling, heating and power system based on Stirling engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256145A (en) * | 2013-05-13 | 2013-08-21 | 华南理工大学 | Combined cooling, heating and power production system based on Stirling engine |
| CN104727871A (en) * | 2015-01-30 | 2015-06-24 | 华北电力大学 | Organic rankine cycle-stirling engine combined cycle power generation system and application method thereof |
| CN105332807A (en) * | 2015-09-28 | 2016-02-17 | 百发动力（无锡）有限公司 | Control system of cogeneration internal combustion engine generator set and control method of control system |
-
2013
- 2013-05-13 CN CN 201320257396 patent/CN203257561U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256145A (en) * | 2013-05-13 | 2013-08-21 | 华南理工大学 | Combined cooling, heating and power production system based on Stirling engine |
| CN104727871A (en) * | 2015-01-30 | 2015-06-24 | 华北电力大学 | Organic rankine cycle-stirling engine combined cycle power generation system and application method thereof |
| CN105332807A (en) * | 2015-09-28 | 2016-02-17 | 百发动力（无锡）有限公司 | Control system of cogeneration internal combustion engine generator set and control method of control system |
| CN105332807B (en) * | 2015-09-28 | 2018-03-20 | 百发动力（无锡）有限公司 | The control system and its control method of cogeneration of heat and power oil-electric engine group |
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