CN103398627A - Multi-source fluid waste heat recovery and comprehensive utilization system - Google Patents

Multi-source fluid waste heat recovery and comprehensive utilization system Download PDF

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Publication number
CN103398627A
CN103398627A CN2013103653471A CN201310365347A CN103398627A CN 103398627 A CN103398627 A CN 103398627A CN 2013103653471 A CN2013103653471 A CN 2013103653471A CN 201310365347 A CN201310365347 A CN 201310365347A CN 103398627 A CN103398627 A CN 103398627A
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heat
heat exchanger
source
energy storage
temperature
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CN2013103653471A
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CN103398627B (en
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谭晓东
栾志博
汤浩
白杰
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Chi Eli Jeal Gauk (Dalian) Co., Ltd.
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Dalian Jiaotong University
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Abstract

The invention discloses a multi-source fluid waste heat recovery and comprehensive utilization system which comprises a high-temperature heat exchanger, a heat source end heat exchanger group, a heat source end small-cycle system, a direct heat exchanging device, a heat energy storage device, a use end heat exchanger group, a waste heat utilization system, a heat pump system and an intelligent control system, wherein the intelligent control system is connected with the high-temperature heat exchanger, the heat source end heat exchanger group, the heat source end small-cycle system, the direct heat exchanging device, the heat energy storage device, the use end heat exchanger group and the heat pump system through control cables respectively. According to the system, two independent internal circulations are set, so that dirt and impurities in water can be prevented while the temperature of a heat source end of a heat pump is guaranteed, independent physical and chemical treatment of circulating water can be performed, and the water quality of the heat source end is guaranteed; and besides, mutual contact between the heat pump and liquids containing different components is isolated through internal circulations, the cleaning and maintaining times are reduced, and the stability and the reliability of operating of the heat pump are guaranteed.

Description

The waste heat recovery of a kind of multi-source fluid and utilization system
Technical field
The present invention relates to multistage extraction and the comprehensive utilization of waste heat in industrial enterprise's production process, the particularly waste heat recovery of a kind of multi-source fluid and utilization system.
Realize various heating sources stream, step extraction and utilization and intelligent work pattern-recognition and process control, improve overall efficiency and the job stability of whole residual neat recovering system, realize the low emission of heat energy.
Background technology
Enterprise, with by the mode with discarded waste heat, having been slatterned greatly, also will take variety of way to carry out cooling secondary again for the temperature of remaining medium simultaneously and consume the energy.The existing way of discarded waste heat has flue gas, cold oil, cooling water, middle water and sewage etc., how wherein heat energy is reclaimed, especially simultaneously by the heat energy in multiple discarded thermal source, reclaim efficiently and form the important development direction that stable thermal source has become energy-saving and emission-reduction, solve multiple waste heat and flow back to and a series of Science and Technology problems that run into such as receive and become most important theories and technical task.
Enterprise, with by the mode with discarded waste heat, having been slatterned greatly, also will take variety of way to carry out cooling secondary again for the temperature of remaining medium simultaneously and consume the energy.The existing way of discarded waste heat has flue gas, cold oil, cooling water, middle water and sewage etc.Existing waste-heat recovery device only carries out energy recovery for a certain thermal source, and there is following several problem in such system:
The actual conditions of 1, being produced are limit, and utilize such residual neat recovering system to be difficult to obtain stable heat energy supply.
2, the temperature fluctuation due to the source pump input is larger, makes it be difficult to bring into play maximum efficiency, and affects service life.
3, be difficult to carry out control and adjusting initiatively in system, it is best that system heat exchange ratio can't reach.
Summary of the invention
The problems referred to above that exist for solving prior art, the present invention will design a kind ofly can improve system heat exchange ratio, reclaim that heat source temperature is stable, the much higher source fluid waste heat recovery of system works reliability and utilization system.
to achieve these goals, technical scheme of the present invention is as follows: the waste heat recovery of a kind of multi-source fluid and utilization system, comprise high-temperature heat exchanger, the heat source side heat exchanger set, the heat source side lesser circulation, the direct heat switch, thermal energy storage system, the use side heat exchanger set, bootstrap system, heat pump and intelligence control system, described intelligence control system by control cables respectively with high-temperature heat exchanger, the heat source side heat exchanger set, the heat source side lesser circulation, the direct heat switch, thermal energy storage system, the use side heat exchanger set is connected with heat pump,
The input of described high-temperature heat exchanger is connected with high temperature heat source, its output is connected with thermal energy storage system through the direct heat switch;
Described heat source side heat exchanger set comprises one group of heat exchanger with different structure and characterisitic parameter, each heat exchanger all is connected to intelligence control system by control cables, and the non high temperature thermal source that the input of heat exchanger is corresponding with connects, its output is connected with internal circulation system; Described internal circulation system is connected with thermal energy storage system through heat pump;
Described use side heat exchanger set comprises one group of heat exchanger with different structure and characterisitic parameter, each heat exchanger all is connected to intelligence control system by control cables, and the input of heat exchanger all connects with thermal energy storage system, its output and corresponding being connected with thermal source;
The output of described thermal energy storage system also directly is connected with hot system with one;
Described high-temperature heat exchanger and heat source side heat exchanger and high temperature heat source and non high temperature thermal source form the multi-source fluid heat transfer circulatory system jointly; The input of described heat source side heat exchanger set, heat source side lesser circulation and heat pump forms the heat source side internal circulation system jointly; The output of described heat pump, thermal energy storage system and use side heat exchanger set form the heat accumulation circulatory system jointly; Described use side heat exchanger set and bootstrap system form the comprehensive utilization circulatory system;
The intelligent control algorithm of described intelligence control system comprises the following steps:
A, to the various heating sources fluid carry out in parallel extract and with the Heat Pump source in loop heat exchange ,Mei road heat exchange control adopt FUZZY ALGORITHMS FOR CONTROL, the stability of circulating water temperature in guaranteeing; By the flow of control of heat source fluid, control the exchange of heat, FUZZY ALGORITHMS FOR CONTROL is as the execution level of controlling, and according to what instruction of heat exchange, determines the valve opening on each road of multi-source fluid;
B, utilize neural network recognization and learn the moving law of multi-source fluid, as the instruction level of FUZZY ALGORITHMS FOR CONTROL; According to the requirement to the thermal energy storage system temperature stabilization, consider simultaneously the requirement to multi-source fluid chilling temperature, in conjunction with the industrial production actual conditions, the neutral net adaptive learning is also summed up the heat energy Changing Pattern of multi-source heat source fluid, according to Internet Experience, provide in real time the heat exchange instruction on each road of multi-source fluid, FUZZY ALGORITHMS FOR CONTROL is controlled the valve opening on each road of multi-source fluid according to this instruction.
Each heat exchanger in heat source side heat exchanger set of the present invention has the most suitable structure and characteristics parameter of thermal source corresponding to it.
Each heat exchanger in use side heat exchanger set of the present invention has with it applying the most suitable structure and characteristics parameter of hot system.
Operation principle of the present invention is as follows: according to the different characteristics of multi-source fluid, adopt different heat energy to extract means, the heat source side heat exchanger is selected different structure and characteristics parameters according to the character of fluid, internal circulation system is kept apart multi-source fluid and heat pump, improves the Stability and dependability of heat pump operating efficiency and use.Thermal energy storage system receives the water outlet from the Heat Pump source, and stored hot water, also play the effect of regulating system overall thermal energy storage capacity simultaneously on the one hand.The use side heat exchanger passes to bootstrap system by the heat in thermal energy storage system.Intelligence control system is regulated the heat transfer process of whole system.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention is provided with two independently inner loop: dirt and impurity in can when guaranteeing Heat Pump source temperature, preventing sealing, and can carry out independent physics and chemistry to recirculated water and process, guaranteed the water quality of heat source side.In addition, the liquid that heat pump and heterogeneity have been isolated in interior circulation is in contact with one another, and reduces cleaning and maintenance frequency, thereby guarantees stability and the reliability of operation of heat pump.
2. the present invention arranges four sub-circulatory systems, realizes the independent heat exchange of each heat source fluid, guarantees the reliable operation of heat pump, the water quality of hot water user's heat and safety.
3. the present invention adopts the intelligent heat-exchange of multi-source fluid to control: according to characteristics and the flowing law of each heat source fluid, control heat-exchange time and the heat exchange amount of itself and interior recirculated water, thereby guarantee to be cooled device or system are obtaining on fully cooling basis, make the various thermals source can be complementary, realize the maximization of heat exchange, guarantee simultaneously circulating water temperature substantially constant in heat source side, improve operating efficiency and the permanence of heat pump;
4. the present invention is in series by four sub-circulatory systems: be respectively circulation in the circulation of multi-source fluid heat transfer, heat source side, heat accumulation circulation and comprehensive utilization circulation, realize the independent heat exchange of each heat source fluid, guarantee the reliable operation of heat pump, the water quality of hot water user's heat and safety;
5. the present invention carries out looping in extraction in parallel and Heat Pump source the control employing FUZZY ALGORITHMS FOR CONTROL of heat exchange ,Mei road heat exchange, the stability of circulating water temperature in guaranteeing to the various heating sources fluid;
6. multimode step extraction scheme of the present invention and the different hot characteristics of use realize optimizing step extraction and step utilization (oil truck cleaning, spray heating, casting sand preheating etc.).Different thermals source is adopted to different heat exchange modes, as high temperature heat source and non high temperature thermal source, the direct heat-obtaining of high temperature heat source, the non high temperature thermal source is by the heat pump heat-obtaining.
The accompanying drawing explanation
The present invention is 1 of drawings attached only, wherein:
Fig. 1 is structural representation of the present invention.
In figure: 1, multi-source heat source fluid, 2, high-temperature heat exchanger, 3, the heat source side lesser circulation, 4, the direct heat switch, 5, thermal energy storage system, 6, the use side heat exchanger set, 7, bootstrap system, 8, heat pump, 9, intelligence control system, 10, the heat source side heat exchanger set.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.as shown in Figure 1, the waste heat recovery of a kind of multi-source fluid and utilization system, comprise high-temperature heat exchanger 2, heat source side heat exchanger set 10, heat source side lesser circulation 3, direct heat switch 4, thermal energy storage system 5, use side heat exchanger set 6, bootstrap system 7, heat pump 8 and intelligence control system 9, described intelligence control system 9 by control cables respectively with high-temperature heat exchanger 2, heat source side heat exchanger set 10, heat source side lesser circulation 3, direct heat switch 4, thermal energy storage system 5, use side heat exchanger set 6 is connected with heat pump 8,
The input of described high-temperature heat exchanger 2 is connected with high temperature heat source, its output is connected with thermal energy storage system 5 through direct heat switch 4;
Described heat source side heat exchanger set 10 comprises one group of heat exchanger with different structure and characterisitic parameter, each heat exchanger all is connected to intelligence control system 9 by control cables, and the non high temperature thermal source that the input of heat exchanger is corresponding with connects, its output is connected with internal circulation system; Described internal circulation system is connected with thermal energy storage system 5 through heat pump 8;
Described use side heat exchanger set 6 comprises one group of heat exchanger with different structure and characterisitic parameter, each heat exchanger all is connected to intelligence control system 9 by control cables, and the input of heat exchanger all connects with thermal energy storage system 5, its output and corresponding being connected with thermal source;
The output of described thermal energy storage system 5 also directly is connected with hot system with one;
Described high-temperature heat exchanger 2 and heat source side heat exchanger and high temperature heat source and non high temperature thermal source form the multi-source fluid heat transfer circulatory system jointly; The input of described heat source side heat exchanger set 10, heat source side lesser circulation 3 and heat pump 8 forms the heat source side internal circulation system jointly; The common heat accumulation circulatory system that forms of the output of described heat pump 8, thermal energy storage system 5 and use side heat exchanger set 6; Described use side heat exchanger set 6 and bootstrap system 7 form the comprehensive utilization circulatory system;
The intelligent control algorithm of described intelligence control system 9 comprises the following steps:
A, to the various heating sources fluid carry out in parallel extract and with the Heat Pump source in loop heat exchange ,Mei road heat exchange control adopt FUZZY ALGORITHMS FOR CONTROL, the stability of circulating water temperature in guaranteeing; By the flow of control of heat source fluid, control the exchange of heat, FUZZY ALGORITHMS FOR CONTROL is as the execution level of controlling, and according to what instruction of heat exchange, determines the valve opening on each road of multi-source fluid;
B, utilize neural network recognization and learn the moving law of multi-source fluid, as the instruction level of FUZZY ALGORITHMS FOR CONTROL; According to the requirement to thermal energy storage system 5 temperature stabilizations, consider simultaneously the requirement to multi-source fluid chilling temperature, in conjunction with the industrial production actual conditions, the neutral net adaptive learning is also summed up the heat energy Changing Pattern of multi-source heat source fluid 1, according to Internet Experience, provide in real time the heat exchange instruction on each road of multi-source fluid, FUZZY ALGORITHMS FOR CONTROL is controlled the valve opening on each road of multi-source fluid according to this instruction.
Each heat exchanger in heat source side heat exchanger set 10 of the present invention has the most suitable structure and characteristics parameter of thermal source corresponding to it.
Each heat exchanger in use side heat exchanger set 6 of the present invention has with it applying the most suitable structure and characteristics parameter of hot system.
Operation principle of the present invention is as follows: according to the different characteristics of multi-source fluid, adopt different heat energy to extract means, the heat source side heat exchanger is selected different structure and characteristics parameters according to the character of fluid, internal circulation system is kept apart multi-source fluid and heat pump 8, improves the Stability and dependability of heat pump operating efficiency and use.The water outlet that thermal energy storage system 5 receives from the Heat Pump source, stored hot water, also play the effect of regulating system overall thermal energy storage capacity simultaneously on the one hand.The use side heat exchanger passes to bootstrap system 7 by the heat in thermal energy storage system 5.Intelligence control system 9 is regulated the heat transfer process of whole system.
The present invention, from the angular divisions of system, is divided into heat-exchange system, the High Efficiency Thermal exchange and heat pump 8, heat accumulation hot-water heating system, multipurpose heat-exchange system and delivery system etc. of heat source system, many thermals source and Heat Pump source internal circulation system.The higher temperature water that the flue gas of middle high temperature, High-temperature cooling oil obtain by heat exchanger and direct heat transfer device directly enters in the water tank of thermal energy storage system 5 or other cooling water is contained to hot cooling water etc. and directly adds storage tank as the water source of bath water.As the air compressor cooling water, as heat source water, by high-performance heat exchanger, heat is changed to internal circulation system; Casting forge cooling water after filtration again by heat exchanger by heat exchange in internal circulation system.Middle water, sewage etc. change to heat in internal circulation system by the vertical array tubular heat exchanger.Heat pump 8 extracts its low-quality heat energy exchange in the water tank of thermal energy storage system 5.Circulation, source pump, heat exchange flow control valve etc. in after heat source water passes through plate type heat exchanger, increasing.Intelligence control system 9 is controlled each road heat exchange flow heat according to the situation of each heat source water, thereby guarantees that the stable inflow temperature that guarantees the Heat Pump source of interior circulating water temperature is stable, improve heat source side water inlet cleanliness factor, thereby improves stability and the efficiency of operation of heat pump.The thermal energy storage of extracting by efficient heat exchanger, source pump is in the storage tank of thermal energy storage system 5.As the heat source water side, according to the difference with the hot water chemical composition, adopting different heat exchange modes, is strong alkaline water as the water of oil truck purging system, in system, will adopt pump and the heat exchanger of acid and alkali-resistance; The water that is used for bathing is that the water of standard for drinking can directly be supplied water by storage tank.Consider simultaneously with the difference of hot temperature and adopt the staged heat-supplying mode, improve the efficiency with heat.
System adopts the computer control system based on the PROFI-BUS network, PLC, computer, electric energy meter, intelligent water supply system, pressure sensor, flow sensor, temperature sensor etc., consists of, and realizes automatic monitoring and the computer management of equipment.Energy management system by Ethernet and enterprise is realized seamless link, raises the management level.

Claims (3)

1. multi-source fluid waste heat recovery and utilization system, it is characterized in that: comprise high-temperature heat exchanger (2), heat source side heat exchanger set (10), heat source side lesser circulation (3), direct heat switch (4), thermal energy storage system (5), use side heat exchanger set (6), bootstrap system (7), heat pump (8) and intelligence control system (9), described intelligence control system (9) by control cables respectively with high-temperature heat exchanger (2), heat source side heat exchanger set (10), heat source side lesser circulation (3), direct heat switch (4), thermal energy storage system (5), use side heat exchanger set (6) is connected with heat pump (8),
The input of described high-temperature heat exchanger (2) is connected with high temperature heat source, its output is connected with thermal energy storage system (5) through direct heat switch (4);
Described heat source side heat exchanger set (10) comprises one group of heat exchanger with different structure and characterisitic parameter, each heat exchanger all is connected to intelligence control system (9) by control cables, and the non high temperature thermal source that the input of heat exchanger is corresponding with connects, its output is connected with internal circulation system; Described internal circulation system is connected with thermal energy storage system (5) through heat pump (8);
Described use side heat exchanger set (6) comprises one group of heat exchanger with different structure and characterisitic parameter, each heat exchanger all is connected to intelligence control system (9) by control cables, and the input of heat exchanger all connects with thermal energy storage system (5), its output and corresponding being connected with thermal source;
The output of described thermal energy storage system (5) also directly is connected with hot system with one;
Described high-temperature heat exchanger (2) and heat source side heat exchanger and high temperature heat source and non high temperature thermal source form the multi-source fluid heat transfer circulatory system jointly; The input of described heat source side heat exchanger set (10), heat source side lesser circulation (3) and heat pump (8) forms the heat source side internal circulation system jointly; The output of described heat pump (8), thermal energy storage system (5) and use side heat exchanger set (6) form the heat accumulation circulatory system jointly; Described use side heat exchanger set (6) and bootstrap system (7) form the comprehensive utilization circulatory system;
The intelligent control algorithm of described intelligence control system (9) comprises the following steps:
A, to the various heating sources fluid carry out in parallel extract and with the Heat Pump source in loop heat exchange ,Mei road heat exchange control adopt FUZZY ALGORITHMS FOR CONTROL, the stability of circulating water temperature in guaranteeing; By the flow of control of heat source fluid, control the exchange of heat, FUZZY ALGORITHMS FOR CONTROL is as the execution level of controlling, and according to what instruction of heat exchange, determines the valve opening on each road of multi-source fluid;
B, utilize neural network recognization and learn the moving law of multi-source fluid, as the instruction level of FUZZY ALGORITHMS FOR CONTROL; According to the requirement to thermal energy storage system (5) temperature stabilization, consider simultaneously the requirement to multi-source fluid chilling temperature, in conjunction with the industrial production actual conditions, the neutral net adaptive learning is also summed up the heat energy Changing Pattern of multi-source heat source fluid (1), according to Internet Experience, provide in real time the heat exchange instruction on each road of multi-source fluid, FUZZY ALGORITHMS FOR CONTROL is controlled the valve opening on each road of multi-source fluid according to this instruction.
2. a kind of multi-source fluid according to claim 1 waste heat recovery and utilization system, it is characterized in that: each heat exchanger in described heat source side heat exchanger set (10) has the most suitable structure and characteristics parameter of thermal source corresponding to it.
3. a kind of multi-source fluid according to claim 1 waste heat recovery and utilization system, it is characterized in that: each heat exchanger in described use side heat exchanger set (6) has with it applying the most suitable structure and characteristics parameter of hot system.
CN201310365347.1A 2013-08-19 2013-08-19 Multi-source fluid waste heat recovery and comprehensive utilization system Expired - Fee Related CN103398627B (en)

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