CN103322709A - Waste heat energy recycling system and use method thereof - Google Patents
Waste heat energy recycling system and use method thereof Download PDFInfo
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- CN103322709A CN103322709A CN2012100745053A CN201210074505A CN103322709A CN 103322709 A CN103322709 A CN 103322709A CN 2012100745053 A CN2012100745053 A CN 2012100745053A CN 201210074505 A CN201210074505 A CN 201210074505A CN 103322709 A CN103322709 A CN 103322709A
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Abstract
The invention belongs to the application field of heating and product process hot water (or other fluids) preparing, and particularly relates to a waste heat energy recycling system and a use method thereof, which extracts low-grade waste heat energy through little electric energy and transforms the low-grade waste heat energy into high-grade heat energy to prepare building heating hot water and production process hot water (or other hot fluids). The system comprises a refrigeration compressor, a condenser, an evaporator, a throttle valve, a heat exchanger and a mediation waterway, and adopts little electric energy to drive the refrigeration compressor to run, a refrigerant absorbs the low-grade heat energy in the evaporator and transforms the low-grade heat energy into the high-grade heat energy through a refrigeration system, and the high-grade heat energy is released in the condenser to heat the water (or the other hot fluids). The compressor is driven through little electric energy, so that a small quantity of high-grade energy is consumed, the low-grade heat energy is extracted and is transformed into the accessible high-grade heat energy, and consumption of primary energy and emission of pollutes are reduced effectively.
Description
Technical field
The invention belongs to heating and the application produced of production technology hot water (or other hot fluids), specifically a kind of by the low-grade waste thermal energy of a little power extraction and change waste thermal energy regeneration application system and the using method thereof that high-grade heat energy is produced constructure heating hot water and production technology hot water (or other hot fluids) into.
Background technology
In central heating industry and industrial heating, the main energy that consumes is coal, oil, combustion gas, has both consumed a large amount of non-renewable fossil energies, also severe contamination environment.Because all there is loss in efficiency in various heating combined equipments, make its thermal effect lower, are generally 0.8～0.95.Entered since 21st century, the energy and environmental protection become the two large problems of society.How to reclaim better the low-grade exhaust heat energy, the discharging that improves the utilization ratio of primary energy and reduce pollutant is the primary work during China 12.
Summary of the invention
The discharging that heats the low problem of mode energy utilization rate, raising primary energy ratio and reduced pollutant in order to solve routine the object of the present invention is to provide a kind of waste thermal energy regeneration application system and using method thereof.This system extracts low-grade waste thermal energy, and changes high-grade heat energy into and produce constructure heating hot water and production technology hot water (or other hot fluids).
The objective of the invention is to be achieved through the following technical solutions:
System of the present invention comprises refrigeration system, water source side water system and use side water system, and wherein refrigeration system comprises refrigeration compressor, condenser and the evaporimeter that is communicated with each other, the connecting line between described condenser and the evaporimeter is provided with choke valve; Described use side water system comprises use side heat exchanger, and this uses side heat exchanger to be connected with described condenser by the intermediary water route, and the water that makes of side is used in the output output of described use side heat exchanger; Described water source side water system comprises preheating heat exchanger and water source side heat exchanger, wherein preheating heat exchanger has two water routes, the input in one of them water route is connected in the low-temperature wastewater source by the 3rd water pump, the output in this water route is communicated with the input of described water source side heat exchanger, the output output waste water of water source side heat exchanger, described water source side heat exchanger is connected with described evaporimeter by the intermediary water route, the input in another water route of described preheating heat exchanger is communicated with the water source that uses side, and output is connected to the input of described use side heat exchanger.
Wherein: described preheating heat exchanger is provided with three-way flow divider valve with the water route that is connected between the water source side heat exchanger, and this three-way flow divider valve is connected with the output of preheating heat exchanger, water source side heat exchanger and water source side heat exchanger output waste water respectively; Described intermediary water route is provided with water pump, and is communicated with constant pressure water compensation apparatus, by water pump by in the constant pressure water compensation apparatus to intermediary's water route moisturizing; Be equipped with the valve of controlling current on described preheating heat exchanger and the water route that is connected water route, the water route that is connected with the preheating heat exchanger input and the connection of described use side heat exchanger output of using the side heat exchanger.
Using method: utilize refrigeration compressor that cold-producing medium is circulated in refrigeration system, in evaporimeter, absorb the low grade heat energy of low-temperature wastewater, then heat release in condenser, be converted into high-grade heat energy, the phase of finishing solution-air and liquid-gas transforms, and the water that makes that uses side is heated.
Wherein: described refrigeration compressor from evaporimeter suck low pressure refrigerant vapor and be compressed into high steam and enter condenser, the gases at high pressure of cold-producing medium are emitted heat and are condensed into highly pressurised liquid in condenser, the cold-producing medium highly pressurised liquid is after the choke valve throttling, become low pressure liquid and enter evaporator evaporation, low pressure liquid absorbs heat of vaporization and becomes low-pressure steam in evaporimeter, cooled compressor sucks again, realizes the periodic duty of refrigeration system; Low-temperature wastewater enters preheating heat exchanger, the water that makes that uses side is carried out preheating, the laggard entry source of heat exchange heat exchanger, with the intermediary's water heat exchange in the intermediary water route, intermediary water absorbs in the evaporimeter that enters refrigeration system behind the low grade heat energy of low-temperature wastewater, with the cold-producing medium heat exchange, intermediary's water is back to water source side heat exchanger after discharging heat energy, carries out heat exchange with low-temperature wastewater, finishes water source side water system circulation; The heat exchange amount of three-way flow divider valve control water source side heat exchanger is set before low-temperature wastewater enters water source side heat exchanger, and the temperature when entering evaporimeter with the intermediary's water in the assurance intermediary water route makes the device operating condition steady; Use side make water enter preheating heat exchanger to carry out preheating, enter intermediary's water heat exchange of using in side heat exchanger and the intermediary water route after the preheating, the high-grade heat energy that intermediary's water absorptive condenser discharges enters by water pump and enters the water that makes that uses side heat exchanger, heating to use side, and intermediary's water is back to condenser and finishes the Heating Cyclic of using side after using the heat exchange of side heat exchanger.
Advantage of the present invention and good effect are:
1. system architecture of the present invention is simple, and is easy to maintenance, only consumed a small amount of high-grade energy and extracted a large amount of low-grade wasted energys and be translated into high-grade heat energy, improved energy utilization rate, reached energy-conservation and purpose environmental protection.
2. system of the present invention is provided with and uses make water or other fluids of side to carry out preheating heat exchanger, has improved greatly the Energy Efficiency Ratio of device.
3. system of the present invention arranges the heat exchange amount of three-way flow divider valve control water source side heat exchanger before low-temperature wastewater or other fluids enter water source side heat exchanger, and the temperature when guaranteeing that intermediary's water enters evaporimeter makes the device operating condition steady.
4. method of the present invention is simple, and easy operating has improved systematic energy efficiency ratio.
5. method of the present invention is by a little electric energy drive compression machine, reached and consumed a small amount of high-grade energy, extract discarded low grade heat energy and be translated into the purpose of spendable high-grade heat energy, effectively reduced the consumption of primary energy and the discharging of pollutant.
Description of drawings
Fig. 1 is structural representation of the present invention;
Wherein: 1 is refrigeration compressor, and 2 is condenser, and 3 is evaporimeter, 4 is choke valve, and 5 is preheating heat exchanger, and 6 is water source side heat exchanger, 7 is the 3rd water pump, and 8 is three-way flow divider valve, and 9 is the first intermediary water route, 10 is the first water pump, and 11 is the first constant pressure water compensation apparatus, and 12 for using the side heat exchanger, 13 is the second intermediary water route, 14 is the second water pump, and 15 is the second constant pressure water compensation apparatus, and 16 is the low-temperature wastewater source.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, waste thermal energy regeneration application system of the present invention comprises refrigeration system, water source side water system and use side water system, wherein refrigeration system comprises refrigeration compressor 1, condenser 2 and evaporimeter 3, the input of refrigeration compressor 1 is communicated with evaporimeter 3 by pipeline, output is communicated with condenser 2 by pipeline, and by pipeline connection, the connecting line between condenser 2 and evaporimeter 3 is provided with choke valve 4 between condenser 2 and the evaporimeter 3.
Water source side water system comprises preheating heat exchanger 5 and water source side heat exchanger 6, use the side water system to comprise and use side heat exchanger 12, wherein preheating heat exchanger 5 has two water routes, the input in one of them water route is connected with the 3rd water pump 7 by pipeline, the 3rd water pump 7 is connected with low-temperature wastewater source 16, this water route is communicated with by the input of pipeline with water source side heat exchanger 6 at the output of preheating heat exchanger 5, and the output of water source side heat exchanger 6 then is connected with pipeline, output waste water; Be provided with the first intermediary water route 9 between water source side heat exchanger 6 and the evaporimeter 3, water source side heat exchanger 6 is connected with evaporimeter 3 by this first intermediary water route 9; The input in another water route of preheating heat exchanger 5 is communicated with the water source that uses side, and output is connected to the input that uses side heat exchanger 12, uses the output of side heat exchanger 12 to export the water that makes that uses side.Be provided with three-way flow divider valve 8 at preheating heat exchanger 5 with the water route that is connected between the water source side heat exchanger 6, the heat exchange amount of control water source side heat exchanger 6, the temperature when guaranteeing that intermediary's water in the first intermediary water route 9 enters evaporimeter 3 operates steadily system; This three-way flow divider valve 8 is connected with the input of preheating heat exchanger 5, water source side heat exchanger 6 and the output of water source side heat exchanger 6 output waste water by pipeline respectively.On the first intermediary water route 9, by pipeline connection the first constant pressure water compensation apparatus 11 is arranged, and is provided with the first water pump 10 in the first intermediary water route 9, by the first water pump 10 by moisturizing in the first intermediary water route 9 in the first constant pressure water compensation apparatus 11.
Use between side heat exchanger 12 and the condenser 2 and be provided with the second intermediary water route 13, use side heat exchanger 12 to be connected with condenser 2 by the second intermediary water route 13; On the second intermediary water route 13, by pipeline connection the second constant pressure water compensation apparatus 15 is arranged, and is provided with the second water pump 14 in the second intermediary water route 13, by the second water pump 14 by moisturizing in the second intermediary water route 13 in the second constant pressure water compensation apparatus 15.Be equipped with the valve of controlling current on preheating heat exchanger 5 and the water route pipeline that is connected water route, the water route that is connected with preheating heat exchanger 5 inputs and the connection of described use side heat exchanger 12 outputs that uses side heat exchanger 12.
First and second constant pressure water compensation apparatus 11,13 of the present invention is commercial product, purchases in Beijing roc extanded source environmental protection equipment Co., Ltd, and model is φ 800.
Using method of the present invention is:
Utilize refrigeration compressor 1 that cold-producing medium is circulated in refrigeration system, in evaporimeter 3, absorb the low grade heat energy of low-temperature wastewater, then heat release in condenser 2, be converted into high-grade heat energy, the phase of finishing solution-air and liquid-gas transforms, and the water that makes that uses side is heated.
Be specially: refrigeration compressor 1 turns round under the driving of a little electric energy (1KW), from evaporimeter 3, suck low pressure (0.4MPa) refrigerant vapour and be compressed into high pressure (2.0MPa) steam and enter condenser 2, the gases at high pressure of cold-producing medium are emitted heat and are condensed into highly pressurised liquid in condenser 2, the cold-producing medium highly pressurised liquid is after choke valve 4 throttlings, become low pressure liquid and enter evaporimeter 3 evaporations, low pressure liquid absorbs heat of vaporization and becomes low-pressure steam in evaporimeter 3, cooled compressor 1 sucks again; So go round and begin again, realize the periodic duty of refrigeration system.The cold-producing medium that adopts in the refrigeration system of the present invention can be refrigerant 134a.
Low-temperature wastewater or other fluids enter preheating heat exchanger 5, make water or other fluids that uses side are carried out preheating, the laggard entry source of heat exchange heat exchanger 6, with intermediary's water (demineralized water) heat exchange in the first intermediary water route 9, intermediary water absorbs in the evaporimeter 3 that enters refrigeration system behind the low grade heat energy of low-temperature wastewater or other fluids, with the cold-producing medium heat exchange, intermediary's water is back to water source side heat exchanger 6 after discharging heat energy, carries out heat exchange with low-temperature wastewater, finishes water source side water system circulation.Enter the water source side heat exchanger 6 front heat exchange amounts that three-way flow divider valve 8 control water source side heat exchangers 6 are set at low-temperature wastewater or other fluids, the temperature when entering evaporimeter 3 with the intermediary's water in the assurance intermediary water route makes the device operating condition steady.
Use side make water (outward defeated hot water or other fluids) enter preheating heat exchanger 5 to carry out preheating, enter intermediary's water (demineralized water) heat exchange of using in side heat exchanger 12 and the second intermediary water route 13 after the preheating, the high-grade heat energy that intermediary's water absorptive condenser 2 discharges enters by the second water pump 14 and enters the water that makes that uses side heat exchanger 12, heating to use side, and intermediary's water is back to condenser 2 and finishes the Heating Cyclic of using side after using 12 heat exchange of side heat exchanger.
Waste thermal energy regeneration application system of the present invention extracts low grade heat energy and is converted into the outer defeated hot water of high-grade heat energy heating or other fluids, is provided with a large amount of preheating devices in the simultaneity factor, has improved the Energy Efficiency Ratio of device; Owing to being to drive refrigeration compressor work with a little electric energy, the completion system function is provided with again and uses make water or other fluids of side to carry out the pre-heating heat-exchanging device, and systematic energy efficiency ratio can reach 4 to 9 or higher, namely consumes the electric energy of 1KW, can obtain the heat energy of 4～9KW.Using method of the present invention is normally heating simultaneously, according to the waste thermal energy situation preheating heat exchanger is set in the device make water or other fluids that uses side carried out preheating, and then improve systematic energy efficiency ratio.
Low-grade exhaust heat can be municipal sewage and Zhong Shui, technique tail water and used heat air etc., the high temperature heat of producing can be according to requirements, output hot water and hot blast, temperature can reach 40 ℃～90 ℃, and system can increase or reduce with instructions for use corresponding configuration according to low-grade exhaust heat.
Waste thermal energy regeneration application system of the present invention can be applicable to have low-grade wasted energy and with the place of heat demand, such as petroleum and petrochemical industry system, heating industry, food medicine processing industry etc.
Claims (9)
1. waste thermal energy regeneration application system, it is characterized in that: comprise refrigeration system, water source side water system and use side water system, wherein refrigeration system comprises refrigeration compressor (1), condenser (2) and the evaporimeter (3) that is communicated with each other, and the connecting line between described condenser (2) and the evaporimeter (3) is provided with choke valve (4); Described use side water system comprises use side heat exchanger (12), and this uses side heat exchanger (12) to be connected with described condenser (2) by the intermediary water route, and the water that makes of side is used in the output output of described use side heat exchanger (12); Described water source side water system comprises preheating heat exchanger (5) and water source side heat exchanger (6), wherein preheating heat exchanger (5) has two water routes, the input in one of them water route is connected in low-temperature wastewater source (16) by the 3rd water pump (7), the output in this water route is communicated with the input of described water source side heat exchanger (6), the output output waste water of water source side heat exchanger (6), described water source side heat exchanger (6) is connected with described evaporimeter (3) by the intermediary water route, the input in another water route of described preheating heat exchanger (5) is communicated with the water source that uses side, and output is connected to the input of described use side heat exchanger (12).
2. by waste thermal energy regeneration application system claimed in claim 1, it is characterized in that: described preheating heat exchanger (5) is provided with three-way flow divider valve (8) with the water route that is connected between the water source side heat exchanger (6), and this three-way flow divider valve (8) is connected with the output of preheating heat exchanger (5), water source side heat exchanger (6) and water source side heat exchanger (6) output waste water respectively.
3. by claim 1 or 2 described waste thermal energy regeneration application systems, it is characterized in that: described intermediary water route is provided with water pump, and is communicated with constant pressure water compensation apparatus, by water pump by in the constant pressure water compensation apparatus to intermediary's water route moisturizing.
4. by claim 1 or 2 described waste thermal energy regeneration application systems, it is characterized in that: be equipped with the valve of controlling current on described preheating heat exchanger (5) and the water route that is connected water route, the water route that is connected with preheating heat exchanger (5) input and the connection of described use side heat exchanger (12) output of using side heat exchanger (12).
5. using method by the described waste thermal energy regeneration application system of claim 1, it is characterized in that: utilize refrigeration compressor (1) that cold-producing medium is circulated in refrigeration system, in evaporimeter (3), absorb the low grade heat energy of low-temperature wastewater, then heat release in condenser (2), be converted into high-grade heat energy, the phase of finishing solution-air and liquid-gas transforms, and the water that makes that uses side is heated.
6. by using method claimed in claim 5, it is characterized in that: described refrigeration compressor (1) from evaporimeter (3) suck low pressure refrigerant vapor, and be compressed into high steam and enter condenser (2), the gases at high pressure of cold-producing medium are emitted heat and are condensed into highly pressurised liquid in condenser (2), the cold-producing medium highly pressurised liquid is after choke valve (4) throttling, become low pressure liquid and enter evaporimeter (3) evaporation, low pressure liquid absorbs heat of vaporization and becomes low-pressure steam in evaporimeter (3), cooled compressor (1) sucks again, realizes the periodic duty of refrigeration system.
7. by using method claimed in claim 5, it is characterized in that: low-temperature wastewater enters preheating heat exchanger (5), the water that makes that uses side is carried out preheating, the laggard entry source of heat exchange heat exchanger (6), with the intermediary's water heat exchange in the intermediary water route, intermediary water absorbs in the evaporimeter (3) that enters refrigeration system behind the low grade heat energy of low-temperature wastewater, with the cold-producing medium heat exchange, intermediary's water is back to water source side heat exchanger (6) after discharging heat energy, carries out heat exchange with low-temperature wastewater, finishes water source side water system circulation.
8. by using method claimed in claim 7, it is characterized in that: enter the front heat exchange amount that three-way flow divider valve (8) control water source side heat exchanger (6) is set of water source side heat exchanger (6) at low-temperature wastewater, temperature when entering evaporimeter (3) with the intermediary's water in the assurance intermediary water route makes the device operating condition steady.
9. by using method claimed in claim 5, it is characterized in that: use side make water enter preheating heat exchanger (5) to carry out preheating, enter intermediary's water heat exchange of using in side heat exchanger (12) and the intermediary water route after the preheating, the high-grade heat energy that intermediary's water absorptive condenser (2) discharges enters by water pump and enters the water that makes that uses side heat exchanger (12), heating to use side, and intermediary's water is back to condenser (2) and finishes the Heating Cyclic of using side after using side heat exchanger (12) heat exchange.
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| CN2012100745053A CN103322709A (en) | 2012-03-20 | 2012-03-20 | Waste heat energy recycling system and use method thereof |
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| CN2012100745053A CN103322709A (en) | 2012-03-20 | 2012-03-20 | Waste heat energy recycling system and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759678A (en) * | 2016-12-06 | 2017-05-31 | 广西宇特新能源股份有限公司 | The hot water water supply installation that cosmetology heat recovery from sewage is utilized |
| CN110044097A (en) * | 2019-05-21 | 2019-07-23 | 广东同益空气能科技股份有限公司 | The energy saver and high temperature water producing method of high-temperature water production |
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| CN102221251A (en) * | 2011-05-18 | 2011-10-19 | 巢民强 | Split depressurization water/ground energy cold and warm domestic hot water integrated central air conditioning unit |
| CN202494241U (en) * | 2012-03-20 | 2012-10-17 | 辽宁爱沃格林节能技术有限公司 | Waste heat energy recycling system |
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Patent Citations (4)
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| CN1563830A (en) * | 2004-04-18 | 2005-01-12 | 大庆富尔达环保节能科技有限责任公司 | System and metod for utilizing and recovering heat from temp reducing of circulating cooling water |
| CN200989660Y (en) * | 2006-12-01 | 2007-12-12 | 喻新程 | Immediate heating heat pump energy-saving water heater |
| CN102221251A (en) * | 2011-05-18 | 2011-10-19 | 巢民强 | Split depressurization water/ground energy cold and warm domestic hot water integrated central air conditioning unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106759678A (en) * | 2016-12-06 | 2017-05-31 | 广西宇特新能源股份有限公司 | The hot water water supply installation that cosmetology heat recovery from sewage is utilized |
| CN110044097A (en) * | 2019-05-21 | 2019-07-23 | 广东同益空气能科技股份有限公司 | The energy saver and high temperature water producing method of high-temperature water production |
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Application publication date: 20130925 |