CN101949558A - Life hot water heat pump system using waste heat of circulating cooling water - Google Patents
Life hot water heat pump system using waste heat of circulating cooling water Download PDFInfo
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- CN101949558A CN101949558A CN 201010282363 CN201010282363A CN101949558A CN 101949558 A CN101949558 A CN 101949558A CN 201010282363 CN201010282363 CN 201010282363 CN 201010282363 A CN201010282363 A CN 201010282363A CN 101949558 A CN101949558 A CN 101949558A
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Abstract
The invention discloses a life hot water heat pump system using waste heat of circulating cooling water, relates to a heat pump system using waste heat of industrial circulating cooling water, and belongs to the technical field of energy. By effectively using a characteristic that the temperature of the circulating cooling water is obviously higher than that of tap water, the life hot water heat pump system aims to obviously reduce the initial cost and operating energy consumption of the system. The life hot water heat pump system comprises a heat pump unit, a heat exchanger, a plurality sets of water pumps, a hot water tank, a control valve, a connecting line thereof and the like; and cold water is preheated by the circulating cooling water through setting a preheating heat exchanger and a water pump and a connecting line thereof, and the preheated water is heated by heat extracted from the circulating cooling water by the heat pump unit, so that the cold water is heated to the required temperature of life hot water by two steps. The life hot water heat pump system is applicable to a heat pump district heating line system recycling waste heat of industrial circulating cooling water.
Description
Technical field
The present invention relates to a kind of domestic hot-water's heat pump that utilizes industrial circulating cooling water (comprising circulating cooling water of power plant) waste heat, belong to energy technology field.
Background technology
Adopt heat pump techniques, develop low-grade, reproducible clean energy resource and be used for the heat supply (heating or domestic hot-water) of building or significant as other low-temperature heat source, be one of effective way of energy-saving and emission-reduction, have huge energy-saving and environmental protection and economic worth.
These low-phase energies comprise: atmosphere, soil, underground water, surface water, municipal sewage and industrial exhaust heat or the like, their temperature is lower, winter is between 0～40 ℃, generally can not directly utilize, need to adopt heat pump techniques, consume a spot of high-order energy, and the utilization ratio that integrates primary energy (coal, oil, natural gas) can reach 100%～133%.
The industrial circulating cooling water amount of China is at least more than 3000 billion cubic meters, be equivalent to more than 5 times of the Yellow River annual runoff, water temperature is generally more than 30 ℃, the waste heat of discharging is very huge, be all largest portions that can utilize low-phase energy, grade is also higher relatively, is a huge good thermal source of heat pump application.
Because the recirculated cooling water temperature is apparently higher than general underground water, sewage, the temperature of soil etc., when heating water service domestic hot-water, the recirculated cooling water temperature is also apparently higher than the temperature (about 10 ℃ of winters) of running water, but the domestic hot-water's temperature (40 ℃) after requiring to heat is again apparently higher than the recirculated cooling water temperature, be that the recirculated cooling water temperature is between running water temperature and domestic hot-water's temperature, therefore when adopting heat pump techniques, be different from general heat pump heat distribution system, be different from simple heat temperature raising again to running water, because heat pump heat distribution system normally extracts heat and is fed in the relatively-high temperature water from water at low temperature, utilize recirculated cooling water running water directly can't be heated to more than 40 ℃ again.
Number of patent application is " 200410034541.2 ", and title is " system and method for recirculated cooling water cooling and heat recovery and utilization ", publication number " CN1563830A "; The patent No. " ZL200620147968.8 ", title " recirculated cooling water heating system ", Granted publication number " CN200986259Y "; The patent No. " ZL200620147361.X ", title " for recirculated cooling water cooling cooling can also be the device of user heating heat supply ", Granted publication number " CN200989624Y ", these patent applications just utilized DESCRIPTION OF THE PRIOR ART heat pump reclaim the basic procedure of the waste heat heat supply in the recirculated cooling water, do not mention the problem of how to supply the domestic hot-water.
Application number is " 200610112862.9 ", and title is " a kind of with the heating system of circulating cooling water of power plant as low order heat source for heat pump ", publication number " CN1916506A "; Application number is " 200610112861.4 ", title is " a kind of water source heat pump heat supply system that utilizes power plant's condensing waste heat ", publication number " CN1959220A ", these two patent applications have proposed some basic technical characterictics, but all be at general heating system, do not mention the technical characterictic of supply heat life water aspect.
If adopting above-mentioned heat pump technological process or some basic technical features to provide the domestic hot-water to running water heating, then do not take into full account the recirculated cooling water temperature apparently higher than this distinguishing feature of running water temperature (about 10 ℃ of winters), to be to utilize heat pump techniques to extract heat from the temperature higher position to be fed to temperature lower (when just beginning to add hot tap-water) during actual motion, this obviously be irrational.
The present invention is directed to and from industrial circulating cooling water, extract heat supply domestic hot-water, propose a kind of systems technology scheme.
Summary of the invention
The purpose of this invention is to provide a kind of domestic hot-water's heat pump that utilizes the recirculated cooling water waste heat, it can effectively utilize the recirculated cooling water temperature apparently higher than this distinguishing feature of running water temperature (about 10 ℃ of winters), thereby significantly reduces system's initial cost and operation energy consumption.
A kind of domestic hot-water's heat pump that utilizes the recirculated cooling water waste heat that the present invention proposes, it is by recirculated cooling water water supply main line 1, cooling water return main line 2, recirculated cooling water heat pump side water pump 3, recirculated cooling water heat pump side water supply branch line 4, recirculated cooling water heat pump side backwater branch line 5, source pump 6, hot water heat cycles water pump 7, hot water heating water supply line 8, hot water heating return piping 9, boiler 1, boiler 2 11, bypass line 12, hot water supply-water pump 13, the terminal water supply line 14 of hot water, the terminal return piping 15 of hot water, terminal hot water user 16, recirculated cooling water preheating side water pump 17, recirculated cooling water preheating side water supply branch line 18, recirculated cooling water preheating side backwater branch line 19, preheating heat exchanger 20, running water preheating water pump 21, running water preheating water supply line 22, running water preheating water-supply line 23, running water preheating water supply control valve 24, cold water storage cistern 25, running water comes water pipeline 26 to form, and recirculated cooling water heat pump side water supply branch line 4 joins with recirculated cooling water water supply main line 1 and source pump 6; Recirculated cooling water heat pump side water pump 3 is connected on the recirculated cooling water heat pump side water supply branch line 4; Recirculated cooling water heat pump side backwater branch line 5 links to each other with source pump 6 with cooling water return main line 2; Hot water heating water supply line 8 links to each other with boiler 1 with source pump 6; Hot water heat cycles water pump 7 is connected on the hot water heating water supply line 8; Hot water heating return piping 9 links to each other with boiler 2 11 with source pump 6; Bypass line 12 connects boiler 1 and boiler 2 11; The terminal water supply line 14 of hot water links to each other with terminal hot water user 16 with boiler 2 11; The terminal return piping 15 of hot water links to each other with terminal hot water user 16 with boiler 1; Recirculated cooling water preheating side water supply branch line 18 links to each other with preheating heat exchanger 20 with recirculated cooling water water supply main line 1; Recirculated cooling water preheating side water pump 17 is connected on the recirculated cooling water preheating side water supply branch line 18; Recirculated cooling water preheating side backwater branch line 19 links to each other with preheating heat exchanger 20 with cooling water return main line 2; Running water preheating water supply line 22 links to each other with cold water storage cistern 25 with preheating heat exchanger 20; Running water preheating water pump 21 is connected on the running water preheating water supply line 22; Running water preheating water-supply line 23 links to each other with boiler 1 with preheating heat exchanger 20; Running water preheating water supply control valve 24 is arranged on the running water preheating water-supply line 23; Running water comes water pipeline 26 and cold water storage cistern 25 to join.
Operation logic is: recirculated cooling water preheating side water pump 17 extracts recirculated cooling water by recirculated cooling water heat pump side water supply branch line 4 from recirculated cooling water water supply main line 1, the water pump of running water preheating simultaneously 21 extracts cold water by running water preheating water supply line 22 from cold water storage cistern 25, recirculated cooling water carries out preheating by 20 pairs of cold water of preheating heat exchanger, the recirculated cooling water that has changed after the heat returns cooling water return main line 2 by recirculated cooling water heat pump side backwater branch line 5, and the cold water after being preheated enters boiler 1 by running water preheating water-supply line 23; Running water preheating water supply control valve 24 is implemented interlock with recirculated cooling water preheating side water pump 17 and running water preheating water pump 21, united opening when boiler one 10 lacks of water, and interlock was closed when the water yield was enough; Running water comes 26 pairs of cold water storage cisterns of water pipeline 25 to carry out moisturizing; Recirculated cooling water heat pump side water pump 3 extracts recirculated cooling water by recirculated cooling water heat pump side water supply branch line 4 and sends into source pump 6 from recirculated cooling water water supply main line 1, recirculated cooling water returns cooling water return main line 2 by recirculated cooling water heat pump side backwater branch line 5 behind source pump 6 heat-obtainings; Hot water heat cycles water pump 7 draws water from boiler 1 by hot water heating water supply line 8 and sends into source pump 6, and this water enters boiler 2 11 by hot water heating return piping 9 after source pump 6 heats up; Hot water supply-water pump 13 extracts hot water from boiler 2 11, by the terminal water supply line 14 of hot water hot water is sent to terminal hot water user 16, for guaranteeing that the water in terminal water supply line 14 of hot water and the terminal hot water user 16 is always available hot water, the terminal return piping 15 of hot water returns a small amount of hot water to boiler 1.
This system has following characteristics and beneficial effect thereof:
(1) significantly reduces initial cost and can reach 40%.Domestic hot-water's temperature can be about 50 ℃, when the temperature of running water is 10 ℃, the temperature rise of water is 40 ℃, if the temperature of recirculated cooling water is 35 ℃, preheating heat exchanger can be elevated to running water 30 ℃, and temperature rise is 20 ℃, account for 50% of overall temperature rise, the coupling of the capacity of source pump and water pump etc. can reduce 50% at this moment, and consideration will be provided with preheating heat exchanger and water pump and pipeline coupling, and the initial cost of this system can save 40%.
(2) save operating cost more than 45%.Because amounts of preheat can reach 50%, therefore only need provide 50% heat get final product, the wasted work of consideration recirculated cooling water preheating side water pump and running water preheating water pump 5% can be saved operating cost 45% at least.
Aforementioned CN1563830A, CN200986259Y, CN200989624Y, CN1916506A and CN1959220A etc. and data of literatures thereof all are not mentioned to above-mentioned technical characterictic.
Description of drawings
Fig. 1 is the structural representation of system of the present invention
Fig. 2 is the schematic diagram of the specific embodiment two
Embodiment
The specific embodiment one (referring to Fig. 1), the system of present embodiment it by recirculated cooling water water supply main line 1, cooling water return main line 2, recirculated cooling water heat pump side water pump 3, recirculated cooling water heat pump side water supply branch line 4, recirculated cooling water heat pump side backwater branch line 5, source pump 6, hot water heat cycles water pump 7, hot water heating water supply line 8, hot water heating return piping 9, boiler 1, boiler 2 11, bypass line 12, hot water supply-water pump 13, the terminal water supply line 14 of hot water, the terminal return piping 15 of hot water, terminal hot water user 16, recirculated cooling water preheating side water pump 17, recirculated cooling water preheating side water supply branch line 18, recirculated cooling water preheating side backwater branch line 19, preheating heat exchanger 20, running water preheating water pump 21, running water preheating water supply line 22, running water preheating water-supply line 23, running water preheating water supply control valve 24, cold water storage cistern 25, running water comes water pipeline 26 to form, and recirculated cooling water heat pump side water supply branch line 4 joins with recirculated cooling water water supply main line 1 and source pump 6; Recirculated cooling water heat pump side water pump 3 is connected on the recirculated cooling water heat pump side water supply branch line 4; Recirculated cooling water heat pump side backwater branch line 5 links to each other with source pump 6 with cooling water return main line 2; Hot water heating water supply line 8 links to each other with boiler 1 with source pump 6; Hot water heat cycles water pump 7 is connected on the hot water heating water supply line 8; Hot water heating return piping 9 links to each other with boiler 2 11 with source pump 6; Bypass line 12 connects boiler 1 and boiler 2 11; The terminal water supply line 14 of hot water links to each other with terminal hot water user 16 with boiler 2 11; The terminal return piping 15 of hot water links to each other with terminal hot water user 16 with boiler 1; Recirculated cooling water preheating side water supply branch line 18 links to each other with preheating heat exchanger 20 with recirculated cooling water water supply main line 1; Recirculated cooling water preheating side water pump 17 is connected on the recirculated cooling water preheating side water supply branch line 18; Recirculated cooling water preheating side backwater branch line 19 links to each other with preheating heat exchanger 20 with cooling water return main line 2; Running water preheating water supply line 22 links to each other with cold water storage cistern 25 with preheating heat exchanger 20; Running water preheating water pump 21 is connected on the running water preheating water supply line 22; Running water preheating water-supply line 23 links to each other with boiler 1 with preheating heat exchanger 20; Running water preheating water supply control valve 24 is arranged on the running water preheating water-supply line 23; Running water comes water pipeline 26 and cold water storage cistern 25 to join.
The specific embodiment two (referring to Fig. 2), what present embodiment and the specific embodiment one were different is at recirculated cooling water heat pump side water supply branch line 4, increase Intermediate Heat Exchanger 27 between recirculated cooling water heat pump side backwater branch line 5 and the source pump 6, intermediary's water pump 28, intermediary's water supply line 29 and intermediary's return piping 30, recirculated cooling water heat pump side water supply branch line 4 and recirculated cooling water heat pump side backwater branch line 5 join with Intermediate Heat Exchanger 27 respectively, intermediary's water supply line 29 and intermediary's return piping 30 join with Intermediate Heat Exchanger 27 and source pump 6 respectively, intermediary's water pump 28 is connected on intermediary's water supply line 29, and other connected mode is identical with the specific embodiment one.Operation logic is for guaranteeing that recirculated cooling water is not contaminated or reveal, guarantee not influence explained hereafter that recirculated cooling water is isolated by Intermediate Heat Exchanger and heat pump, and other operation logic is identical with the specific embodiment one.
Claims (2)
1. domestic hot-water's heat pump that utilizes the recirculated cooling water waste heat, it is characterized in that it is by recirculated cooling water water supply main line 1, cooling water return main line 2, recirculated cooling water heat pump side water pump 3, recirculated cooling water heat pump side water supply branch line 4, recirculated cooling water heat pump side backwater branch line 5, source pump 6, hot water heat cycles water pump 7, hot water heating water supply line 8, hot water heating return piping 9, boiler 1, boiler 2 11, bypass line 12, hot water supply-water pump 13, the terminal water supply line 14 of hot water, the terminal return piping 15 of hot water, terminal hot water user 16, recirculated cooling water preheating side water pump 17, recirculated cooling water preheating side water supply branch line 18, recirculated cooling water preheating side backwater branch line 19, preheating heat exchanger 20, running water preheating water pump 21, running water preheating water supply line 22, running water preheating water-supply line 23, running water preheating water supply control valve 24, cold water storage cistern 25, running water comes water pipeline 26 to form, and recirculated cooling water heat pump side water supply branch line 4 joins with recirculated cooling water water supply main line 1 and source pump 6; Recirculated cooling water heat pump side water pump 3 is connected on the recirculated cooling water heat pump side water supply branch line 4; Recirculated cooling water heat pump side backwater branch line 5 links to each other with source pump 6 with cooling water return main line 2; Hot water heating water supply line 8 links to each other with boiler 1 with source pump 6; Hot water heat cycles water pump 7 is connected on the hot water heating water supply line 8; Hot water heating return piping 9 links to each other with boiler 2 11 with source pump 6; Bypass line 12 connects boiler 1 and boiler 2 11; The terminal water supply line 14 of hot water links to each other with terminal hot water user 16 with boiler 2 11; The terminal return piping 15 of hot water links to each other with terminal hot water user 16 with boiler 1; Recirculated cooling water preheating side water supply branch line 18 links to each other with preheating heat exchanger 20 with recirculated cooling water water supply main line 1; Recirculated cooling water preheating side water pump 17 is connected on the recirculated cooling water preheating side water supply branch line 18; Recirculated cooling water preheating side backwater branch line 19 links to each other with preheating heat exchanger 20 with cooling water return main line 2; Running water preheating water supply line 22 links to each other with cold water storage cistern 25 with preheating heat exchanger 20; Running water preheating water pump 21 is connected on the running water preheating water supply line 22; Running water preheating water-supply line 23 links to each other with boiler 1 with preheating heat exchanger 20; Running water preheating water supply control valve 24 is arranged on the running water preheating water-supply line 23; Running water comes water pipeline 26 and cold water storage cistern 25 to join.
2. a kind of domestic hot-water's heat pump that utilizes the recirculated cooling water waste heat according to claim 1, it is characterized in that at recirculated cooling water heat pump side water supply branch line 4, increase Intermediate Heat Exchanger 27 between recirculated cooling water heat pump side backwater branch line 5 and the source pump 6, intermediary's water pump 28, intermediary's water supply line 29 and intermediary's return piping 30, recirculated cooling water heat pump side water supply branch line 4 and recirculated cooling water heat pump side backwater branch line 5 join with Intermediate Heat Exchanger 27 respectively, intermediary's water supply line 29 and intermediary's return piping 30 join with Intermediate Heat Exchanger 27 and source pump 6 respectively, and intermediary's water pump 28 is connected on intermediary's water supply line 29.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010282363 CN101949558B (en) | 2010-09-08 | 2010-09-08 | Life hot water heat pump system using waste heat of circulating cooling water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010282363 CN101949558B (en) | 2010-09-08 | 2010-09-08 | Life hot water heat pump system using waste heat of circulating cooling water |
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| CN101949558A true CN101949558A (en) | 2011-01-19 |
| CN101949558B CN101949558B (en) | 2012-08-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028584A (en) * | 2012-11-12 | 2013-04-10 | 河北橡一医药科技股份有限公司 | Hot water comprehensive utilization system in rubber plug production process |
| CN108518782A (en) * | 2018-06-08 | 2018-09-11 | 银川雷升太阳能有限公司 | A kind of cooling/warming system of solar energy integration air source heat pump |
| CN112197336A (en) * | 2020-11-16 | 2021-01-08 | 上海有隆工程勘测技术有限公司 | Pipeline heat storage type instant heating type high-temperature air source heat pump heating water system |
| CN113739463A (en) * | 2021-08-19 | 2021-12-03 | 珠海格力电器股份有限公司 | Control method and device for refrigerating unit and refrigerating equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103028584A (en) * | 2012-11-12 | 2013-04-10 | 河北橡一医药科技股份有限公司 | Hot water comprehensive utilization system in rubber plug production process |
| CN103028584B (en) * | 2012-11-12 | 2014-11-05 | 河北橡一医药科技股份有限公司 | Hot water comprehensive utilization system in rubber plug production process |
| CN108518782A (en) * | 2018-06-08 | 2018-09-11 | 银川雷升太阳能有限公司 | A kind of cooling/warming system of solar energy integration air source heat pump |
| CN112197336A (en) * | 2020-11-16 | 2021-01-08 | 上海有隆工程勘测技术有限公司 | Pipeline heat storage type instant heating type high-temperature air source heat pump heating water system |
| CN113739463A (en) * | 2021-08-19 | 2021-12-03 | 珠海格力电器股份有限公司 | Control method and device for refrigerating unit and refrigerating equipment |
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| CN101949558B (en) | 2012-08-29 |
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