Multi-energy complementary energy system suitable for optoelectronic product industrial park

Abstract

The utility model belongs to the technical field of industrial park energy system optimization, and relates to a multi-energy complementary energy system suitable for an optoelectronic product industrial park. Comprising a centrifugal heat pump unit condenser, a centrifugal heat pump unit evaporator, a screw type heat pump unit condenser, a screw type heat pump unit evaporator, a water source heat pump unit, a cooling tower group, a heat exchanger, a comfort air conditioner, a purification air conditioner and process cooling equipment, through comprehensive refrigeration and heating of the centrifugal heat pump unit, the screw type heat pump unit and the water source heat pump unit, the system has multiple operation modes; according to the industrial park multi-energy complementary energy system, through optimization of the industrial park multi-energy complementary energy system, accurate matching of various energy supply parties and demand parties can be achieved, various energy use requirements of multiple terminals can be met only through one energy system, and the problems that in the current multi-energy complementary system technology, the system is tedious and the functions are redundant are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy system optimization in industrial parks, and relates to a multi-energy complementary energy system suitable for an optoelectronic product industrial park. Background Art

[0002] In recent years, my country's industrial parks have developed rapidly, especially the construction of high-tech industrial parks has increased. The energy supply systems of such parks usually have the characteristics of huge energy consumption, diverse energy use forms, and diverse energy temperature requirements.

[0003] However, in order to meet various needs within the park, existing energy system design technology usually designs corresponding energy supply systems for different energy demands. Such one-to-one corresponding single energy system has simple principles and is easy to design and construct. However, during long-term use, it has gradually exposed a series of problems, such as the energy station occupying too large an area, low energy system utilization, complex system management, too high initial system investment, and too high system operating costs, which to a certain extent restrict the healthy and sustainable development of the park.

[0004] Therefore, in the face of increasingly severe energy and environmental challenges, how to build an efficient, flexible and environmentally friendly industrial park energy system, achieve precise matching of multiple energy suppliers and demanders, and then realize an energy system that meets diverse energy needs has become an urgent problem that needs to be solved in the current multi-energy complementary system design technology. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: a multi-energy complementary energy system suitable for an optoelectronic product industrial park, comprising: a centrifugal heat pump unit condenser, a centrifugal heat pump unit evaporator, a screw heat pump unit condenser, a screw heat pump unit evaporator, a water source heat pump unit, a first cooling tower group, a second cooling tower group, a first heat exchanger, a second heat exchanger, a comfort air conditioner, and a purification air conditioner;

[0006] The water path of the centrifugal heat pump unit condenser is connected in series with the second water pump and the third valve, and then connected to the first cooling tower group. The pipeline node between the second water pump and the third valve is connected to the condensing end of the second heat exchanger.

[0007] The water path of the evaporator of the centrifugal heat pump unit is connected in series with the fourth valve and the third water pump in sequence and then connected to the terminal of the comfort air conditioner;

[0008] The water circuit of the screw heat pump unit condenser is connected in series with the sixth water pump and then connected to the pipeline node between the second water pump and the third valve;

[0009] The water circuit of the screw heat pump unit evaporator is connected in series with the fifth valve and then connected to the pipeline node between the centrifugal heat pump unit evaporator and the fourth valve;

[0010] The refrigeration water circuit of the water source heat pump unit is circulated and connected to the sixth water pump;

[0011] The evaporation end of the first heat exchanger is connected to the pipeline node between the fourth valve and the third water pump, and the condensation end of the first heat exchanger is connected to the pipeline node between the second water pump and the third valve;

[0012] The pipeline node between the condensing end of the first heat exchanger and the third valve is connected to the pipeline node between the fourth valve and the third water pump after passing through the second valve.

[0013] Preferably, the evaporation end and the condensation end of the first heat exchanger are both provided with a linked first valve.

[0014] Preferably, the multi-energy complementary energy system further comprises: process low-temperature cooling equipment, process medium-temperature cooling equipment, and process high-temperature cooling equipment;

[0015] The cooling water circuits of the water source heat pump unit are circulated and connected to the process low-temperature cooling equipment, process medium-temperature cooling equipment, and process high-temperature cooling equipment respectively;

[0016] A fifth water pump is connected in series between the process low-temperature cooling equipment and the water source heat pump unit. The water circuit of the process medium-temperature cooling equipment is connected in series with the fourth water pump and then connected to the pipeline node between the fifth valve and the evaporator of the screw heat pump unit. The water circuit of the process high-temperature cooling equipment is connected in series with the sixth valve and then connected to the pipeline node between the process medium-temperature cooling equipment and the fourth water pump.

[0017] The water path of the second cooling tower group is connected in series with the seventh valve and the first water pump in sequence, and then connected to the pipeline node between the process high-temperature cooling equipment and the sixth valve.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model can achieve accurate matching between multiple energy suppliers and demanders, thereby realizing that only one energy system can meet the diverse energy needs of multiple terminals, solving the problems of cumbersome systems and redundant functions in current multi-energy complementary system technology.

[0020] 2. The utility model realizes the cascade utilization of energy through multi-energy complementation, significantly improves energy utilization efficiency, and reduces the overall energy consumption of the park.

[0021] 3. The utility model adds a renewable energy system to the traditional energy system, reducing carbon emissions and improving the environmental friendliness of the park's energy system.

[0022] 4. The utility model provides a stable and high-quality energy supply for precision manufacturing industries such as optoelectronic products, which is beneficial to improving product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is an operation control principle diagram of a multi-energy complementary energy system suitable for an optoelectronic product industrial park.

[0024] Among them, 1. Condenser of centrifugal heat pump unit; 2. Evaporator of centrifugal heat pump unit; 3. Condenser of screw heat pump unit; 4. Evaporator of screw heat pump unit; 5. Water source heat pump unit; 6a. First cooling tower group; 6b. Second cooling tower group; 7a. First heat exchanger; 7b. Second heat exchanger; 8. Process low-temperature cooling equipment; 9. Process medium-temperature cooling equipment; 10. Process high-temperature cooling equipment; 11. Comfort air conditioning; 12. Purification air conditioning; 13a. First valve; 13b. Second valve; 13c. Third valve; 13d. Fourth valve; 13e. Fifth valve; 13f. Sixth valve; 13g. Seventh valve; 14a. First water pump; 14b. Second water pump; 14c. Third water pump; 14d. Fourth water pump; 14e. Fifth water pump; 14f. Sixth water pump; 14g. Seventh water pump. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] refer to Figure 1 , this implementation adopts the following technical solutions:

[0027] This embodiment utilizes a series of operating modes such as summer low-temperature cooling mode, summer medium-temperature cooling mode, summer high-temperature cooling mode, transition season free cooling mode, winter high-temperature heating mode, and winter medium-temperature heating mode to meet the system operation purpose.

[0028] This embodiment uses the on / off control of 12 equipment components, 5 groups of main valves and 7 main water pumps to achieve the purpose of system switching.

[0029] The optimization plan for the multi-energy complementary energy system of the industrial park proposed in this embodiment can realize a four-pipe controlled energy system, through valve control and intelligent adjustment, to simultaneously meet the different temperature requirements of process low-temperature cooling equipment (10°C), process medium-temperature cooling equipment (20°C), process high-temperature cooling equipment (30°C) and comfort air conditioning (45°C in winter / 7°C in summer). The specific plan is as follows.

[0030] The system mainly includes: centrifugal heat pump unit condenser 1, centrifugal heat pump unit evaporator 2, screw heat pump unit condenser 3, screw heat pump unit evaporator 4, water source heat pump unit 5, cooling tower group, heat exchanger, process low-temperature cooling equipment 8, process medium-temperature cooling equipment 9, process high-temperature cooling equipment 10, comfort air conditioner 11, purification air conditioner 12, valves, and water pumps.

[0031] The system operation modes are mainly:

[0032] 1) Summer park low temperature cooling mode:

[0033] Connect the centrifugal heat pump unit condenser 1 and the centrifugal heat pump unit evaporator 2, the heat pump unit prepares 7 / 12℃ chilled water, opens the fourth valve 13d, runs the third water pump 14c, and connects the pipeline through the centrifugal heat pump unit evaporator 2 to the end of the comfort air conditioner 11 to supply the cooling needs of the park; at the same time, open the third valve 13c and the second water pump 14b, and part of the heat generated by the centrifugal heat pump unit evaporator 2 is discharged into the atmosphere through the first cooling tower group 6a, and the other part of the heat is used to prepare hot water through the second heat exchanger 7b for reheating of the purification air conditioner 12.

[0034] 2) Summer process medium and low temperature refrigeration mode:

[0035] The screw refrigeration heat pump unit condenser 3, screw refrigeration heat pump unit evaporator 4, and water source heat pump unit 5 are the primary heat dissipators, with heat dissipated by the first cooling tower cluster 6a. The fourth, fifth, sixth, and seventh water pumps 14d, 14e, 14f, and 14g are activated, using the medium-temperature (20 / 25°C) chilled water generated by the process medium-temperature cooling unit 9. This medium-temperature chilled water is then fed through the water source heat pump unit 5 to the process low-temperature cooling unit 8, which produces low-temperature (10 / 15°C) chilled water to meet the cooling needs of the industrial park. A portion of the heat from the screw refrigeration heat pump unit condenser 3 is discharged to the atmosphere through the first cooling tower cluster 6a, while the remaining heat is generated by the second heat exchanger 7b to produce hot water for reheating in the purification air conditioner 12.

[0036] 3) Summer process high temperature cooling mode:

[0037] The second cooling tower group 6b is used for natural cooling. The first water pump 14a and the seventh valve 13g are opened to prepare the high-temperature 30 / 35°C chilled water cooling process of the high-temperature cooling equipment 10 through the second cooling tower group 6b.

[0038] 4) Free cooling mode in summer transition season:

[0039] Connect the first cooling tower cluster 6a, the first heat exchanger 7a, and the centrifugal heat pump condenser 1 and evaporator 2. Open the first valve 13a and third valve 13c, and start the second and third water pumps 14b and 14c. The chilled water produced by the outdoor first cooling tower cluster 6a at 30 / 35°C, after heat exchange through the first heat exchanger 7a, is converted to 15 / 18°C chilled water to meet the cooling needs of the park. If the cooling capacity cannot meet the demand, close the first valve 13a, open the second valve 13b, the centrifugal heat pump condenser 1, and the centrifugal heat pump evaporator 2, and use the centrifugal heat pump to produce 7 / 12°C chilled water to meet the cooling needs of the park. Free cooling technology is prioritized, using rooftop cooling towers for cooling to reduce mechanical cooling energy consumption.

[0040] 5) Winter heating mode:

[0041] Connect centrifugal heat pump unit condenser 1, centrifugal heat pump unit evaporator 2, screw refrigeration heat pump unit condenser 3, and screw refrigeration heat pump unit evaporator 4. Close all cooling towers. Open valves 2 (second valve 13b), 13e (fifth valve 13e), and 13f (sixth valve 13f). Close valves 13a (first valve 13a), 13c (third valve 13c), and 13d (fourth valve 13d). Run water pumps 2 (second pump 14b), 14c (third pump 14c), 14d (fourth pump 14d), 14e (fifth pump 14f), and 14f (sixth pump 14f). Evaporator 2 (centrifugal heat pump unit) and evaporator 4 (screw refrigeration heat pump unit) recover waste heat from 20 / 25°C process equipment. Condenser 1 (centrifugal heat pump unit) and condenser 3 (screw refrigeration heat pump unit) generate 45 / 40°C warm water, which is then connected to the park's air conditioning pipelines, recovering waste heat for heating.

[0042] The optimization scheme of the multi-energy complementary energy system of the industrial park proposed in this implementation mode can realize a four-pipe energy system, through valve control and intelligent regulation, to meet the different temperature requirements of process low-temperature cooling equipment (10℃), process medium-temperature cooling equipment (15℃), process high-temperature cooling equipment (25℃) and comfort air conditioning (45℃ in winter / 7℃ in summer) at the same time.

[0043] This embodiment utilizes a series of operating modes such as summer low-temperature cooling mode, summer medium-temperature cooling mode, summer high-temperature cooling mode, transition season free cooling mode, winter high-temperature heating mode, and winter medium-temperature heating mode to meet the system operation purpose.

[0044] This embodiment uses the on / off control of 12 equipment components, 5 groups of main valves and 7 main water pumps to achieve the purpose of system switching.

[0045] To sum up, the utility model adopts the method of combining the process cooling equipment and air-conditioning equipment of the industrial park, and optimizes the multi-energy complementary energy system of the industrial park, so as to achieve accurate matching of multiple energy suppliers and demanders, and then achieve the use of only one energy system to meet the diverse energy needs of multiple terminals, solving the problems of cumbersome systems and redundant functions in the current multi-energy complementary system technology.

[0046] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-energy complementary energy system suitable for optoelectronic product industrial parks, characterized in that: include: Centrifugal heat pump unit condenser (1), centrifugal heat pump unit evaporator (2), screw heat pump unit condenser (3), screw heat pump unit evaporator (4), water source heat pump unit (5), first cooling tower group (6a), second cooling tower group (6b), first heat exchanger (7a), second heat exchanger (7b), comfort air conditioner (11), purification air conditioner (12); The water circuit of the centrifugal heat pump unit condenser (1) is connected in series with the second water pump (14b) and the third valve (13c) in sequence and then connected to the first cooling tower group (6a), and the pipeline node between the second water pump (14b) and the third valve (13c) is connected to the condensing end of the second heat exchanger (7b); The water path of the centrifugal heat pump unit evaporator (2) is connected in series with the fourth valve (13d) and the third water pump (14c) in sequence and then connected to the end of the comfort air conditioner (11); The water circuit of the screw heat pump unit condenser (3) is connected in series with a sixth water pump (14f) and then communicated to the pipeline node between the second water pump (14b) and the third valve (13c); The water path of the screw heat pump unit evaporator (4) is connected in series with a fifth valve (13e) and then communicated to the pipeline node between the centrifugal heat pump unit evaporator (2) and the fourth valve (13d); The refrigeration water circuit of the water source heat pump unit (5) is circulated and connected to the sixth water pump (14f); The evaporation end of the first heat exchanger (7a) is connected to the pipeline node between the fourth valve (13d) and the third water pump (14c), and the condensation end of the first heat exchanger (7a) is connected to the pipeline node between the second water pump (14b) and the third valve (13c); The pipeline node between the condensing end of the first heat exchanger (7a) and the third valve (13c) is connected to the pipeline node between the fourth valve (13d) and the third water pump (14c) through the second valve (13b).

2. The multi-energy complementary energy system suitable for an optoelectronics product industrial park according to claim 1, characterized in that: The evaporation end and the condensation end of the first heat exchanger (7a) are both provided with a linked first valve (13a).

3. The multi-energy complementary energy system suitable for an optoelectronics product industrial park according to claim 1, characterized in that: The multi-energy complementary energy system further comprises: a process low-temperature cooling device (8), a process medium-temperature cooling device (9), and a process high-temperature cooling device (10); The cooling water circuit of the water source heat pump unit (5) is circulated and connected to the process low-temperature cooling equipment (8), the process medium-temperature cooling equipment (9), and the process high-temperature cooling equipment (10). A fifth water pump (14e) is connected in series between the process low-temperature cooling device (8) and the water source heat pump unit (5); the water circuit of the process medium-temperature cooling device (9) is connected in series with the fourth water pump (14d) and then connected to the pipeline node between the fifth valve (13e) and the evaporator (4) of the screw heat pump unit; and the water circuit of the process high-temperature cooling device (10) is connected in series with the sixth valve (13f) and then connected to the pipeline node between the process medium-temperature cooling device (9) and the fourth water pump (14d); The water circuit of the second cooling tower cluster (6b) is connected in series with the seventh valve (13g) and the first water pump (14a) in sequence, and then connected to the pipeline node between the process high-temperature cooling equipment (10) and the sixth valve (13f).

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