CN104747316A - Low-grade heat energy cyclic power generation experimental platform - Google Patents

Low-grade heat energy cyclic power generation experimental platform Download PDF

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Publication number
CN104747316A
CN104747316A CN201510041920.2A CN201510041920A CN104747316A CN 104747316 A CN104747316 A CN 104747316A CN 201510041920 A CN201510041920 A CN 201510041920A CN 104747316 A CN104747316 A CN 104747316A
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China
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heat energy
grade heat
low grade
experiment porch
decompressor
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CN104747316B (en
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潘利生
魏小林
李博
李腾
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Institute of Mechanics of CAS
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Institute of Mechanics of CAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention discloses a low-grade heat energy cyclic power generation experimental platform. By the adoption of the low-grade heat energy cyclic power generation experimental platform, transcritical power cycle generation with CO2 serving as the working medium is achieved in a laboratory, and further development of the CO2 transcritical power cycle technique is promoted. The low-grade heat energy cyclic power generation experimental platform comprises a heat conduction oil circulation subsystem, a CO2 circulation subsystem, a cooling water circulation subsystem, a power generator, a load and a data acquisition and control system, wherein the CO2 circulation subsystem comprises a CO2 plunger pump, a supercritical heater, a CO2 expander and a condenser, the heat conduction oil circulation subsystem is connected with the supercritical heater, the cooling water circulation subsystem is connected with the condenser, CO2 sequentially passes through the CO2 plunger pump, the supercritical heater, the CO2 expander and the condenser, and the CO2 expander, the power generator and the load are sequentially connected.

Description

A kind of circulating generation experiment porch of low grade heat energy
Technical field
The invention belongs to the technical field of using energy source, relate to a kind of circulating generation experiment porch of low grade heat energy particularly.
Background technique
Along with the development of human society and the continuous minimizing of fossil energy, energy resource supply faces more and more severeer problem.Because low grade heat energy is widely distributed, reserves are huge, more and more come into one's own.Low grade heat energy mainly comprises cryogenically heat energy, low-grade solar thermal energy and low-temperature industrial waste heat waste thermal energy.Compared with high-grade heat energy, low grade heat energy utilization ratio is low, technical sophistication and still not mature enough.Adopt the power cycle of unconventional working medium to have the potentiality of efficiency utilization low grade heat energy, comprised CO by the unconventional working medium of extensive concern 2, NH 3and organic working medium.
CO 2compare other unconventional working medium and there is many merits, as zero odp value, low GWP value, nontoxic, non-combustible.Be in the CO of supercritical state 2, its physical property is between liquid and gas.Its density ratio general gas flow wants large two orders of magnitude, close with liquid.Its ratio of viscosities liquid is little, but diffusion velocity faster than liquid (about two orders of magnitude), so have good mobility and transmit performance.Its permittivity sharply changes with pressure (being conducive to dissolving the large material of some polarity as permittivity increases).CO 2in Trans-critical cycle power cycle, there is not constant temperature endothermic process in overcritical working medium heat transfer process, and Temperature of Working change changes have good matching with heat source temperature.
Therefore, CO 2trans-critical cycle power cycle is a kind of power cycle with development potentiality, has the advantage of efficiency utilization heat energy.But, also do not adopt the CO of supercritical state at present 2carry out the report of circulating generation.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provides a kind of circulating generation experiment porch of low grade heat energy, and it achieves in the lab and adopts CO 2for the Trans-critical cycle power cycle of working medium generates electricity, contribute to advancing CO 2further developing of Trans-critical cycle power cycle technology.
Technical solution of the present invention is: the circulating generation experiment porch of this low grade heat energy, it comprises conduction oil cycle subsystem, CO 2cycle subsystem, cooling water circulation subtense angle, generator, load, data collection and control system, CO 2cycle subsystem comprises CO 2plunger pump, supercritical heated device, CO 2decompressor, condenser, conduction oil cycle subsystem is connected with supercritical heated device, and cooling water circulation subtense angle is connected with condenser, CO 2flow through CO successively 2plunger pump, supercritical heated device, CO 2decompressor, condenser, CO 2decompressor, generator, load connect successively.
The present invention is by conduction oil cycle subsystem heating CO 2cO in cycle subsystem 2, by cooling water circulation subtense angle cooling CO 2cO in cycle subsystem 2, thus realize CO 2expander does work, and pushing generator generates electricity, and by load consumption electric energy, therefore achieves in the lab and adopt CO 2for the Trans-critical cycle power cycle of working medium generates electricity, contribute to advancing CO 2further developing of Trans-critical cycle power cycle technology.
Accompanying drawing explanation
Fig. 1 is according to CO2 Trans-critical cycle power cycle view of the present invention;
Fig. 2 is the structural representation of the circulating generation experiment porch according to low grade heat energy of the present invention.
Embodiment
As shown in Figure 2, the circulating generation experiment porch of this low grade heat energy, it comprises conduction oil cycle subsystem, CO 2cycle subsystem, cooling water circulation subtense angle, generator, load, data collection and control system, CO 2cycle subsystem comprises CO 2plunger pump, supercritical heated device, CO 2decompressor, condenser, conduction oil cycle subsystem is connected with supercritical heated device, and cooling water circulation subtense angle is connected with condenser, CO 2flow through CO successively 2plunger pump, supercritical heated device, CO 2decompressor, condenser, CO 2decompressor, generator, load connect successively.
The present invention is by conduction oil cycle subsystem heating CO 2cO in cycle subsystem 2, by cooling water circulation subtense angle cooling CO 2cO in cycle subsystem 2, thus realize CO 2expander does work, and pushing generator generates electricity, and by load consumption electric energy, therefore achieves in the lab and adopt CO 2for the Trans-critical cycle power cycle of working medium generates electricity, contribute to advancing CO 2further developing of Trans-critical cycle power cycle technology.
In addition, described CO 2cycle subsystem also comprises regenerator, CO 2flow through CO successively 2plunger pump, regenerator high pressure side, supercritical heated device, CO 2decompressor, regenerator low voltage side, condenser.
In addition, described cooling water circulation subtense angle comprises handpiece Water Chilling Units, cooling waterpump.Due to CO 2critical temperature is lower, is 31 DEG C, therefore CO 2trans-critical cycle power circulation system must adopt low-temperature cooling water could by subcritical CO 2cooling condensation, the cooling water adopting cooling tower to produce can not meet the demands, CO disclosed by the invention 2trans-critical cycle power cycle generator experimental platform adopts handpiece Water Chilling Units to produce cooling water, and cooling water temperature can regulate between 0 DEG C and room temperature.
In addition, described conduction oil cycle subsystem comprises heat transfer oil heater, conduction oil flowmeter, Heat-transfer Oil Pump.Conduction oil flows through Heat-transfer Oil Pump successively, heat transfer oil heater, supercritical heated device conduction oil side, conduction oil flow take into account corresponding thermal conductive oil pipeline and valve.
In addition, described conduction oil cycle subsystem also comprises conduction oil expansion drum.In conduction oil temperature-rise period, specific volume increases, and conduction oil expansion drum can play buffer function, prevents conduction oil from overflowing system or system pressure rising.
In addition, described CO 2plunger pump also connects frequency variator.CO is regulated by regulating frequency variator 2the pressure of plunger pump.
In addition, described load is lamp box.Further, described lamp box is incandescent lamp lamp box.
In addition, described CO 2cycle subsystem also comprises lubricating oil separator, and it is at CO 2between decompressor and condenser.Such lubricant oil that can make is from CO 2in separate and ensure purity.
Regulating working conditions means during experiment comprise following several: regulate lamp box load by regulating load lamp box incandescent lamp number, and then regulate decompressor rotating speed and CO 2circular flow; By regulating CO 2plunger pump frequency adjustment CO 2plunger pump operation frequency, and then regulate CO 2circular flow; By regulating main line valve and the bypass line valving system conduction oil flow of conduction oil subtense angle; By regulating main line valve and the bypass line valving system cooling water flow of cooling water subtense angle; By regulating handpiece Water Chilling Units temperature, regulating system cooling water temperature is set; By regulating heat-conducting oil heating furnace temperature, regulating system conduction oil temperature is set.
Fig. 1 is CO 2trans-critical cycle power cycle view, Fig. 2 is the structural representation of the circulating generation experiment porch according to low grade heat energy of the present invention.By valve regulated, experimental research can being carried out to adopting the platform of regenerator, also can carry out experimental research to not adopting the platform of regenerator.
When adopting regenerator, the supercritical state CO of High Temperature High Pressure 2enter expander acting (in Fig. 1,21 ~ 2), pushing generator generates electricity, and is consumed by load lamp box, the gaseous state CO of the low-temp low-pressure subcritical state after expansion 2enter the CO of regenerator low voltage side and high pressure side low-temperature condition 2carry out heat exchange (in Fig. 1,22 ~ a), CO cooled further 2entering condenser, is liquid CO by low-temperature cooling water cooling condensation 2(in Fig. 1,2 a ~ 4), liquid CO 2at CO 2in plunger pump, pressure raises (in Fig. 1,24 ~ 5), reaches the low temperature CO of supercritical pressure state 2enter regenerator high pressure side and low voltage side CO 2heat exchange (in Fig. 1,25 ~ b), the CO after preheating 2heated the CO of the supercritical state of the high pressure that reaches a high temperature further by conduction oil in supercritical heated device 2(in Fig. 1,2 b ~ 1), thus complete a circulation.
When not adopting regenerator, the supercritical state CO of High Temperature High Pressure 2enter expander acting (in Fig. 1,21 ~ 2), pushing generator generates electricity, and is consumed by load lamp box, the gaseous state CO of the low-temp low-pressure subcritical state after expansion 2entering condenser, is liquid CO by low-temperature cooling water cooling condensation 2(in Fig. 1,22 ~ 4), liquid CO 2at CO 2in plunger pump, pressure raises (in Fig. 1,24 ~ 5), reaches the low temperature CO of supercritical pressure state 2enter in supercritical heated device the CO of supercritical state of the high pressure that reached a high temperature by heat-conducting oil heating 2(in Fig. 1,25 ~ 1), thus complete a circulation.
The circulating generation experiment porch of low grade heat energy disclosed by the invention, achieves CO in the lab 2trans-critical cycle power cycle generates electricity, and platform generated output can reach 1.6kW, and this platform contributes to CO 2trans-critical cycle power cycle carries out experimental research, contributes to advancing CO 2trans-critical cycle power cycle Research progress, for the application of this engineering provides reference.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong to the protection domain of technical solution of the present invention.

Claims (10)

1. a circulating generation experiment porch for low grade heat energy, is characterized in that: it comprises conduction oil cycle subsystem, CO 2cycle subsystem, cooling water circulation subtense angle, generator, load, data collection and control system, CO 2cycle subsystem comprises CO 2plunger pump, supercritical heated device, CO 2decompressor, condenser, conduction oil cycle subsystem is connected with supercritical heated device, and cooling water circulation subtense angle is connected with condenser, CO 2flow through CO successively 2plunger pump, supercritical heated device, CO 2decompressor, condenser, CO 2decompressor, generator, load connect successively.
2. the circulating generation experiment porch of low grade heat energy according to claim 1, is characterized in that: described CO 2cycle subsystem also comprises regenerator, CO 2flow through CO successively 2plunger pump, regenerator high pressure side, supercritical heated device, CO 2decompressor, regenerator low voltage side, condenser.
3. the circulating generation experiment porch of low grade heat energy according to claim 2, is characterized in that: described cooling water circulation subtense angle comprises handpiece Water Chilling Units, cooling waterpump.
4. the circulating generation experiment porch of low grade heat energy according to claim 3, is characterized in that: described conduction oil cycle subsystem comprises heat transfer oil heater, conduction oil flowmeter, Heat-transfer Oil Pump.
5. the circulating generation experiment porch of low grade heat energy according to claim 4, is characterized in that: described conduction oil cycle subsystem also comprises conduction oil expansion drum.
6. the circulating generation experiment porch of low grade heat energy according to claim 1, is characterized in that: described CO 2plunger pump also connects frequency variator.
7. the circulating generation experiment porch of low grade heat energy according to claim 1, is characterized in that: described load is lamp box.
8. the circulating generation experiment porch of low grade heat energy according to claim 7, is characterized in that: described lamp box is incandescent lamp lamp box.
9. the circulating generation experiment porch of low grade heat energy according to claim 1, is characterized in that: described CO 2decompressor is CO 2rolling rotor decompressor; Described generator is permanent magnet generator, and it is placed in decompressor housing.
10. the circulating generation experiment porch of low grade heat energy according to claim 1, is characterized in that: described CO 2cycle subsystem also comprises lubricating oil separator, and it is at CO 2between decompressor and condenser.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106437916A (en) * 2016-12-06 2017-02-22 上海初远环保科技有限公司 Expansion generator system
CN108180470A (en) * 2017-11-28 2018-06-19 东南大学 The fire coal circulating fluid bed boiler of supercritical carbon dioxide and electricity generation system and electricity-generating method
CN113036932A (en) * 2021-02-26 2021-06-25 中国科学院力学研究所 CO (carbon monoxide)2Transcritical thermodynamic cycle power storage system and method

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CN102518491A (en) * 2011-11-22 2012-06-27 中国科学院力学研究所 Thermal circulating system by utilizing carbon dioxide as circulating working medium
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US20130269334A1 (en) * 2012-04-17 2013-10-17 Chandrashekhar Sonwane Power plant with closed brayton cycle
JP2013227907A (en) * 2012-04-25 2013-11-07 Denso Corp External combustion engine
CN103790662A (en) * 2014-01-29 2014-05-14 中国科学院力学研究所 Transcritical power circulating device and method
CN203962054U (en) * 2013-10-21 2014-11-26 陕西博尔能源科技有限公司 A kind of integrated turbines based on permanent magnetism and magnetic levitation technology

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251876A (en) * 2011-06-28 2011-11-23 罗良宜 Thermal power generation device by using trans-critical low-temperature air energy
CN102518491A (en) * 2011-11-22 2012-06-27 中国科学院力学研究所 Thermal circulating system by utilizing carbon dioxide as circulating working medium
US20130145759A1 (en) * 2011-12-13 2013-06-13 Chandrashekhar Sonwane Low cost and higher efficiency power plant
US20130269334A1 (en) * 2012-04-17 2013-10-17 Chandrashekhar Sonwane Power plant with closed brayton cycle
JP2013227907A (en) * 2012-04-25 2013-11-07 Denso Corp External combustion engine
CN103310692A (en) * 2013-07-09 2013-09-18 黑龙江大学 Multifunctional comprehensive experiment system for physics teaching
CN203962054U (en) * 2013-10-21 2014-11-26 陕西博尔能源科技有限公司 A kind of integrated turbines based on permanent magnetism and magnetic levitation technology
CN103790662A (en) * 2014-01-29 2014-05-14 中国科学院力学研究所 Transcritical power circulating device and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106437916A (en) * 2016-12-06 2017-02-22 上海初远环保科技有限公司 Expansion generator system
CN108180470A (en) * 2017-11-28 2018-06-19 东南大学 The fire coal circulating fluid bed boiler of supercritical carbon dioxide and electricity generation system and electricity-generating method
CN108180470B (en) * 2017-11-28 2018-10-23 东南大学 The fire coal circulating fluid bed boiler of supercritical carbon dioxide and electricity generation system and electricity-generating method
CN113036932A (en) * 2021-02-26 2021-06-25 中国科学院力学研究所 CO (carbon monoxide)2Transcritical thermodynamic cycle power storage system and method

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