CN112229068A - System and method for improving unit water supply temperature by utilizing factory waste heat - Google Patents
System and method for improving unit water supply temperature by utilizing factory waste heat Download PDFInfo
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- CN112229068A CN112229068A CN202011242134.6A CN202011242134A CN112229068A CN 112229068 A CN112229068 A CN 112229068A CN 202011242134 A CN202011242134 A CN 202011242134A CN 112229068 A CN112229068 A CN 112229068A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 239000002918 waste heat Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 9
- 239000010908 plant waste Substances 0.000 claims description 11
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000009323 psychological health Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a system and a method for improving the water supply temperature of a unit by utilizing waste heat of a factory building, wherein the system comprises an air treatment module (1), a heat carrying module (2), a water heating module (3), a waste heat recoverer (5) and a heat exchanger (9); the medium in the air processing module (1) is air, the medium in the heat carrying module (2) is a refrigerant, and the medium in the water heating module (3) is condensed water; air in the air processing module (1) transfers heat to a refrigerant in the heat carrying module (2) through the waste heat recoverer (5), and the refrigerant in the heat carrying module (2) transfers heat to condensed water in the water heating module (3) through the heat exchanger (9). Through measurement and calculation, the invention consumes 1 degree of electricity in the operation process, can absorb the waste heat 8300KJ of a factory building, increases the heat of 8300KJ of water supply, reduces the electricity consumption of an air conditioner by 1 degree, and has the comprehensive benefit of about 1: 5.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a system and a method for improving the water supply temperature of a unit by utilizing waste heat of a factory building.
Background
Because equipment operates to dissipate heat and a heat distribution pipeline dissipates heat in the power plant, the temperature in the power plant is higher, and particularly in the power plant in the south, the temperature of some power plants can reach 45 ℃. The high temperature in the factory building is not beneficial to the safe and stable operation of the equipment and the normal work of the staff. The higher air in the plant is a waste heat that is not utilized.
The temperature of the condensed water from the condensed water pump is about 35 ℃ generally, and the condensed water enters the deaerator after being heated, so that the consumption of steam for heating water can be reduced, and the efficiency of the unit is improved.
The system composed of a proper refrigerant, a compressor, a heat exchanger and a throttle valve can absorb waste heat in air to heat feed water, so that the efficiency of the unit is improved; meanwhile, after heat in the air of the plant is absorbed, the air temperature is reduced, and safe and stable operation of equipment and physical and psychological health of workers are facilitated.
The cold air generated by the system can be delivered to a required working place to replace an air conditioner, and the energy-saving and environment-friendly effects are achieved.
Disclosure of Invention
The invention aims to provide a system and a method for improving the unit feed water temperature by utilizing the plant waste heat, aiming at the problem that a large amount of waste heat exists in a power station plant.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a system for improving the unit feed water temperature by utilizing the waste heat of a factory building comprises an air treatment module, a heat carrying module, a water heating module, a waste heat recoverer and a heat exchanger; wherein,
the medium in the air processing module is air, the medium in the heat carrying module is a refrigerant, and the medium in the water heating module is condensed water;
the air in the air processing module transfers heat to the refrigerant in the heat carrying module through the waste heat recoverer, and the refrigerant in the heat carrying module transfers heat to the condensed water in the water heating module through the heat exchanger.
The invention is further improved in that the temperature of the air is between 25 ℃ and 55 DEG C
A further development of the invention is that the temperature of the condensation water is between 15 ℃ and 45 ℃.
The invention is further improved in that the air treatment module comprises an air filter and an exhaust fan; the outlet of the air filter is connected with the first inlet of the waste heat recoverer, and the first outlet of the waste heat recoverer is connected with the inlet of the exhaust fan.
The invention has the further improvement that the heat carrying module comprises a refrigerant compressor and a refrigerant throttling device; the outlet of the refrigerant throttling device is connected with the second inlet of the waste heat recoverer, the second outlet of the waste heat recoverer is connected with the inlet of the refrigerant compressor, the outlet of the refrigerant compressor is connected with the first inlet of the heat exchanger, and the first outlet of the heat exchanger is connected with the inlet of the refrigerant throttling device.
The invention has the further improvement that the water heating module comprises a hot water three-way valve, a cold water three-way valve, a deaerator water supply main pipe and a condensate pump outlet main pipe; the first outlet of the cold water three-way valve is connected with the second inlet of the heat exchanger, the second outlet of the heat exchanger is connected with the first inlet of the hot water three-way valve, the outlet of the hot water three-way valve is connected with the inlet of the deaerator water supply main pipe, the outlet of the condensate pump outlet main pipe is connected with the inlet of the cold water three-way valve, and the second outlet of the cold water three-way valve is connected with the second inlet of the hot water three-way valve.
A method for improving the unit feed water temperature by utilizing the plant waste heat is based on the system for improving the unit feed water temperature by utilizing the plant waste heat, and comprises the following steps:
after the air treatment module operates, hot air in a factory building is filtered and dedusted by an air filter and then enters a waste heat recoverer, heat is transferred to a refrigerant in the heat carrying module in the waste heat recoverer, the air temperature is reduced, the air is exhausted to other places needing cold air through an exhaust fan, and the air in the factory building is supplemented by external air;
after the refrigerant in the waste heat recoverer absorbs heat, the temperature rises, the pressure is increased after the refrigerant is pressurized by the refrigerant compressor, the heat is transmitted to condensed water in the water heating module after passing through the heat exchanger, the temperature is reduced, and the pressure is reduced after passing through the refrigerant throttling device;
condensed water from a condensed water pump outlet main pipe enters a heat exchanger through a cold water three-way valve, the temperature is increased after the heat is absorbed in the heat exchanger, and the condensed water enters a deaerator water supply main pipe through a hot water three-way valve;
when the air temperature is lower or the air treatment module and the heat carrying module can not operate in the plant, the condensed water from the condensed water pump outlet main pipe directly flows from the cold water three-way valve to the hot water three-way valve and bypasses the heat exchanger, so that the normal operation of the condensed water system is ensured.
Compared with the prior art, the invention has the following advantages:
compared with the system commonly used at present, the system has the following obvious advantages:
1. after the air treatment module operates, the air in the plant can be purified, the temperature of the plant can be reduced, and the generated cold air can be 2 for staff places to replace the air conditioner, so that the safe operation of equipment and the physical and psychological health of staff are facilitated;
2. the heat carrying module system is simple and easy to implement and low in manufacturing cost;
3. after the water heating module operates, the water can be heated and supplied, and the operating efficiency of the generator set is improved.
4. Through measurement and calculation, the system consumes 1-degree electricity in the operation process, can absorb the waste heat 8300KJ of a plant, increases the heat of 8300KJ in water supply, reduces the electricity consumption of an air conditioner by 1 degree, and has the comprehensive benefit of about 1: 5.
drawings
FIG. 1 is a block diagram of a system for increasing the temperature of unit feed water by using waste heat of a factory building according to the present invention.
Description of reference numerals:
1. the system comprises an air treatment module, a heat carrying module, a water heating module, a heat filter, a waste heat recoverer, an exhaust fan, a refrigerant compressor, a refrigerant throttling device, a heat exchanger, a water three-way valve, a cold water three-way valve, a deaerator water supply main pipe, a condensate pump outlet main pipe and a condensate pump outlet main pipe, wherein the air treatment module is 2, the heat carrying module is 3, the water heating module is 4, the air filter is 5.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the system for increasing the unit feed water temperature by using the plant waste heat provided by the invention comprises an air treatment module 1, a heat carrying module 2, a water heating module 3, a waste heat recoverer 5 and a heat exchanger 9; the medium in the air processing module 1 is air, the temperature of the air is between 25 ℃ and 55 ℃, the medium in the heat carrying module 2 is a refrigerant, the medium in the water heating module 3 is condensed water, and the temperature of the condensed water is between 15 ℃ and 45 ℃; the air in the air treatment module 1 transfers heat to the refrigerant in the heat transport module 2 through the waste heat recoverer 5, and the refrigerant in the heat transport module 2 transfers heat to the condensed water in the water heating module 3 through the heat exchanger 9.
The air treatment module 1 comprises an air filter 4 and an exhaust fan 6; the outlet of the air filter 4 is connected to the first inlet of the waste heat recoverer 5, and the first outlet of the waste heat recoverer 5 is connected to the inlet of the exhaust fan 6.
The heat carrying module 2 comprises a refrigerant compressor 7 and a refrigerant throttling device 8; the outlet of the refrigerant throttling device 8 is connected to the second inlet of the waste heat recoverer 5, the second outlet of the waste heat recoverer 5 is connected to the inlet of the refrigerant compressor 7, the outlet of the refrigerant compressor 7 is connected to the first inlet of the heat exchanger 9, and the first outlet of the heat exchanger 9 is connected to the inlet of the refrigerant throttling device 8.
The water heating module 3 comprises a hot water three-way valve 10, a cold water three-way valve 11, a deaerator water supply main pipe 12 and a condensate pump outlet main pipe 13; the first outlet of the cold water three-way valve 11 is connected to the second inlet of the heat exchanger 9, the second outlet of the heat exchanger 9 is connected to the first inlet of the hot water three-way valve 10, the outlet of the hot water three-way valve 10 is connected to the inlet of the deaerator water supply main pipe 12, the outlet of the condensate pump outlet main pipe 13 is connected to the inlet of the cold water three-way valve 11, and the second outlet of the cold water three-way valve 11 is connected to the second inlet of the hot water three-way valve 10.
The invention provides a method for increasing the water supply temperature of a unit by utilizing waste heat of a factory building, which comprises the following steps:
after the air processing module 1 is operated, hot air in a factory building is filtered and dedusted by the air filter 4 and then enters the waste heat recoverer 5, heat is transferred to a refrigerant in the heat carrying module 2 in the waste heat recoverer 5, the air temperature is reduced, the air is exhausted to other places needing cold air through the exhaust fan 6, and the air in the factory building is supplemented by external air;
after absorbing heat, the refrigerant in the waste heat recoverer 5 rises in temperature, is pressurized by the refrigerant compressor 7, then is increased in pressure, passes through the heat exchanger 9, transfers heat to condensed water in the water heating module 3, lowers the temperature, and lowers the pressure after passing through the refrigerant throttling device 8;
condensed water from a condensed water pump outlet main pipe 13 enters a heat exchanger 9 through a cold water three-way valve 11, the temperature is increased after the heat is absorbed in the heat exchanger 9, and the condensed water enters a deaerator water supply main pipe 12 through a hot water three-way valve 10;
when the air temperature in the plant is low or the air treatment module 1 and the heat carrying module 2 can not operate, the condensed water from the condensed water pump outlet main pipe 13 directly flows from the cold water three-way valve 11 to the hot water three-way valve 10, and the heat exchanger 9 bypasses the hot water three-way valve, so that the normal operation of the condensed water system is ensured.
Claims (7)
1. A system for improving the unit water supply temperature by utilizing the factory waste heat is characterized by comprising an air treatment module (1), a heat carrying module (2), a water heating module (3), a waste heat recoverer (5) and a heat exchanger (9); wherein,
the medium in the air processing module (1) is air, the medium in the heat carrying module (2) is a refrigerant, and the medium in the water heating module (3) is condensed water;
air in the air processing module (1) transfers heat to a refrigerant in the heat carrying module (2) through the waste heat recoverer (5), and the refrigerant in the heat carrying module (2) transfers heat to condensed water in the water heating module (3) through the heat exchanger (9).
2. The system for increasing the unit feed water temperature by using the plant waste heat according to claim 1, wherein the temperature of the air is between 25 ℃ and 55 ℃.
3. The system for increasing the unit feed water temperature by using the plant waste heat as claimed in claim 1, wherein the temperature of the condensed water is between 15 ℃ and 45 ℃.
4. The system for increasing the unit feed water temperature by using the plant waste heat according to claim 1, characterized in that the air treatment module (1) comprises an air filter (4) and an exhaust fan (6); the outlet of the air filter (4) is connected with the first inlet of the waste heat recoverer (5), and the first outlet of the waste heat recoverer (5) is connected with the inlet of the exhaust fan (6).
5. The system for increasing the unit feed water temperature by using the plant waste heat as claimed in claim 4, wherein the heat carrying module (2) comprises a refrigerant compressor (7) and a refrigerant throttling device (8); the outlet of the refrigerant throttling device (8) is connected to the second inlet of the waste heat recoverer (5), the second outlet of the waste heat recoverer (5) is connected to the inlet of the refrigerant compressor (7), the outlet of the refrigerant compressor (7) is connected to the first inlet of the heat exchanger (9), and the first outlet of the heat exchanger (9) is connected to the inlet of the refrigerant throttling device (8).
6. The system for increasing the unit water supply temperature by using the plant waste heat is characterized in that the water heating module (3) comprises a hot water three-way valve (10), a cold water three-way valve (11), a deaerator water supply main pipe (12) and a condensate pump outlet main pipe (13); the first outlet of the cold water three-way valve (11) is connected with the second inlet of the heat exchanger (9), the second outlet of the heat exchanger (9) is connected with the first inlet of the hot water three-way valve (10), the outlet of the hot water three-way valve (10) is connected with the inlet of the deaerator water supply main pipe (12), the outlet of the condensate pump outlet main pipe (13) is connected with the inlet of the cold water three-way valve (11), and the second outlet of the cold water three-way valve (11) is connected with the second inlet of the hot water three-way valve (10).
7. A method for increasing the unit feed water temperature by using the plant waste heat is characterized in that the method is based on the system for increasing the unit feed water temperature by using the plant waste heat in claim 6, and comprises the following steps:
after the air processing module (1) operates, hot air in a factory building is filtered and dedusted by the air filter (4) and then enters the waste heat recoverer (5), heat is transferred to a refrigerant in the heat carrying module (2) in the waste heat recoverer (5), the air temperature is reduced, the air is exhausted to other places needing cold air through the exhaust fan (6), and the air in the factory building is supplemented by external air;
after absorbing heat, the refrigerant in the waste heat recoverer (5) rises in temperature, is pressurized by the refrigerant compressor (7) and then rises in pressure, passes through the heat exchanger (9), transfers heat to condensed water in the water heating module (3), lowers in temperature, and lowers in pressure after passing through the refrigerant throttling device (8);
condensed water from a condensed water pump outlet main pipe (13) enters a heat exchanger (9) through a cold water three-way valve (11), the temperature rises after the heat is absorbed in the heat exchanger (9), and the condensed water enters a deaerator water supply main pipe (12) through a hot water three-way valve (10);
when the air temperature in the plant is low or the air treatment module (1) and the heat carrying module (2) cannot operate, condensed water from a condensed water pump outlet main pipe (13) directly flows to a hot water three-way valve (10) from a cold water three-way valve (11) and bypasses a heat exchanger (9), so that the normal operation of a condensed water system is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011242134.6A CN112229068A (en) | 2020-11-09 | 2020-11-09 | System and method for improving unit water supply temperature by utilizing factory waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011242134.6A CN112229068A (en) | 2020-11-09 | 2020-11-09 | System and method for improving unit water supply temperature by utilizing factory waste heat |
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| CN112229068A true CN112229068A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011242134.6A Pending CN112229068A (en) | 2020-11-09 | 2020-11-09 | System and method for improving unit water supply temperature by utilizing factory waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521780A (en) * | 2021-09-02 | 2021-10-22 | 东营益盛化工有限公司 | Esterification tower for producing butyl acetate |
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|---|---|---|---|---|
| US20110006529A1 (en) * | 2009-07-10 | 2011-01-13 | Nrg Energy, Inc. | Combined cycle power plant |
| CN202195588U (en) * | 2011-07-01 | 2012-04-18 | 广东汇嵘节能服务有限公司 | Factory waste heat recycling heating device |
| CN102425535A (en) * | 2011-11-28 | 2012-04-25 | 友达光电股份有限公司 | Heat recovery device for air compressor |
| CN203010817U (en) * | 2012-12-24 | 2013-06-19 | 苏州设计研究院股份有限公司 | Summer working position temperature-regulating and energy-saving system for machinery plants |
| CN211290005U (en) * | 2019-12-16 | 2020-08-18 | 广州华科工程技术有限公司 | Waste heat recovery system of thermal power plant |
-
2020
- 2020-11-09 CN CN202011242134.6A patent/CN112229068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110006529A1 (en) * | 2009-07-10 | 2011-01-13 | Nrg Energy, Inc. | Combined cycle power plant |
| CN202195588U (en) * | 2011-07-01 | 2012-04-18 | 广东汇嵘节能服务有限公司 | Factory waste heat recycling heating device |
| CN102425535A (en) * | 2011-11-28 | 2012-04-25 | 友达光电股份有限公司 | Heat recovery device for air compressor |
| CN203010817U (en) * | 2012-12-24 | 2013-06-19 | 苏州设计研究院股份有限公司 | Summer working position temperature-regulating and energy-saving system for machinery plants |
| CN211290005U (en) * | 2019-12-16 | 2020-08-18 | 广州华科工程技术有限公司 | Waste heat recovery system of thermal power plant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521780A (en) * | 2021-09-02 | 2021-10-22 | 东营益盛化工有限公司 | Esterification tower for producing butyl acetate |
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Application publication date: 20210115 |