CN112984866B - Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method - Google Patents

Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method Download PDF

Info

Publication number
CN112984866B
CN112984866B CN202110465859.XA CN202110465859A CN112984866B CN 112984866 B CN112984866 B CN 112984866B CN 202110465859 A CN202110465859 A CN 202110465859A CN 112984866 B CN112984866 B CN 112984866B
Authority
CN
China
Prior art keywords
heat
source
cold
loop
water pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110465859.XA
Other languages
Chinese (zh)
Other versions
CN112984866A (en
Inventor
刘延俊
杨晓玮
张理
吴永鹏
杨旭
陈云
武爽
薛祎凡
颜飞
翟晓宇
刘颖昕
王洪雨
李婷
黄世苗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Southern Marine Science and Engineering Guangdong Laboratory Zhanjiang
Original Assignee
Shandong University
Southern Marine Science and Engineering Guangdong Laboratory Zhanjiang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University, Southern Marine Science and Engineering Guangdong Laboratory Zhanjiang filed Critical Shandong University
Priority to CN202110465859.XA priority Critical patent/CN112984866B/en
Publication of CN112984866A publication Critical patent/CN112984866A/en
Application granted granted Critical
Publication of CN112984866B publication Critical patent/CN112984866B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
    • F03G7/05—Ocean thermal energy conversion, i.e. OTEC
    • 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
    • F25B39/00—Evaporators; Condensers
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Landscapes

  • 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)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Sustainable Development (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses a cold and heat source supply system for an ocean temperature difference energy power generation experimental platform and a control method, and belongs to the technical field of ocean temperature difference energy power generation. The cold and heat source supply system and the control method provided by the invention have the simulation functions of surface layer temperature seawater and deep layer cold seawater, can adjust the temperature required by the operation of the OTEC experiment platform according to the ambient water temperature, have large simulation water amount, are simple to control and operate, are stable and efficient, can operate for a long time, and are suitable for long-time operation test of a high-power ocean temperature difference energy power generation platform.

Description

Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method
Technical Field
The invention relates to a cold and heat source supply system for an ocean temperature difference energy power generation experimental platform and a control method, and belongs to the technical field of ocean temperature difference energy power generation.
Background
The Ocean Thermal Energy power generation platform generates power by using the Ocean Thermal Energy Conversion (OTEC) principle, and particularly relates to a thermoelectric Conversion technology for generating power by using the Thermal gradient between surface-layer warm seawater and deep-layer cold seawater. The OTEC system mainly comprises an evaporator, a condenser, an expander, a generator, a working medium pump and the like. When the working device works, working media are heated in the evaporator by surface-layer warm seawater (heat source) to become steam, the steam drives the expander to rotate to generate electricity and then becomes exhaust steam, the exhaust steam flows into the condenser, the exhaust steam in the condenser is condensed into liquid after being absorbed by deep-layer cold seawater (cold source), and then the liquid is pumped to the evaporator by the working media pump to continue circulation. The research aiming at the whole system and key parts of the technology is the research focus in the field of ocean heat energy research at home and abroad. At present, most of OTEC experimental platforms constructed in China are hectowatt-level low-power experimental tables, the water consumption of cold and hot sources is low, and the cold and hot sources are generally provided for the experimental platforms in a heat storage mode. However, the cold and heat sources used by the experiment platform of the OTEC with kilowatt-level high power use large water consumption, and the heat storage mode is not suitable for providing the cold and heat sources for the experiment platform.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
Disclosure of Invention
The invention provides a cold and heat source supply system and a control method for an ocean temperature difference energy power generation experiment platform, aiming at solving the problems in the prior art, and the cold and heat source supply system and the control method are large in simulated water amount, simple in control operation, stable and efficient, capable of running for a long time and suitable for long-time running test of a high-power ocean temperature difference energy power generation platform.
The invention adopts the following technical scheme to realize the purpose:
in a first aspect, the present invention provides a cold and heat source supply system for an ocean thermoelectric power generation experimental platform, which is suitable for a performance test stage of an OTEC, and includes:
a water source heat pump unit;
the system comprises a heat source heat-preserving water tank and a heat source water pump, wherein the condenser side of the water source heat pump unit, the heat source heat-preserving water tank, the heat source water pump and the evaporator side of the OTEC are sequentially connected through pipelines to form a first heat source circulation loop;
the system comprises a cold source heat-insulation water tank and a cold source water pump, wherein the evaporator side of the water source heat pump unit, the cold source heat-insulation water tank, the cold source water pump and the condenser side of the OTEC are sequentially connected through pipelines to form a first cold source circulation loop;
the heat source heat-preservation water tank, the auxiliary water pump and the evaporator side of the air-cooled heat pump unit are sequentially connected through pipelines to form a first auxiliary temperature regulating loop; the cold source heat preservation water tank, the auxiliary water pump and the evaporator side of the air-cooled heat pump unit are sequentially connected through pipelines to form a second auxiliary temperature regulating loop.
In a second aspect, in order to conveniently and rapidly establish a cold source and a heat source with required temperatures in the starting stage of the cold source and heat source supply system, the invention also provides the cold source and heat source supply system for the ocean thermoelectric energy power generation experimental platform, which is suitable for the starting stage of the cold source and heat source supply system, and the cold source and heat source supply system further comprises a heat exchanger and a heat exchanger bypass pipeline, wherein the heat exchanger bypass pipeline connects a cold flow side inlet and a cold flow side outlet of the heat exchanger, or the heat exchanger bypass pipeline connects a heat flow side inlet and a heat flow side outlet of the heat exchanger, and the heat exchanger bypass pipeline and an inlet and outlet pipeline at the bypassed side are provided with switch valves;
the condenser side of the water source heat pump unit, the heat source heat preservation water tank, the heat source water pump, the heat flow side of the heat exchanger and the evaporator side of the OTEC are sequentially connected through pipelines to form a second heat source circulation loop;
the evaporator side of the water source heat pump unit, the cold source heat preservation water tank, the cold source water pump, the cold flow side of the heat exchanger and the condenser side of the OTEC are sequentially connected through pipelines to form a second cold source circulation loop.
Preferably, the outside of pipeline cladding has the heat preservation insulating layer.
And the inlet pipelines of the heat source water pump, the cold source water pump and the auxiliary water pump are all provided with filters, and the outlet pipelines are all provided with one-way valves.
Optionally, the inlets and the outlets of the key components on the second heat source circulation loop, the second cold source circulation loop and the heat exchanger bypass pipeline are respectively provided with a stop valve, so that the disassembly, the overhaul and the replacement are convenient.
The cold and heat source supply system for the ocean temperature difference energy power generation experiment platform further comprises a parameter monitoring unit and a control unit, wherein the parameter monitoring unit is used for monitoring the temperature and the flow of each key position in the heat source circulation loop, the cold source circulation loop and the auxiliary temperature adjusting loop, and the control unit is used for controlling the opening and closing of the auxiliary water pump and the heat exchanger bypass pipeline according to the temperature and the flow and controlling the opening and closing and the variable frequency operation of the water source heat pump unit, the air cooling heat pump unit, the heat source water pump and the cold source water pump.
In a third aspect, the present invention further provides a method for controlling a cold and heat source supply system for an ocean thermoelectric power generation experimental platform in an OTEC performance testing stage, including: the water source heat pump unit, the air cooling heat pump unit, the heat source water pump, the cold source water pump and the auxiliary water pump are started, so that the first auxiliary temperature adjusting loop, the first heat source circulating loop and the first cold source circulating loop are opened, the second auxiliary temperature adjusting loop is closed, the heat source circularly flows in the first auxiliary temperature adjusting loop and the first heat source circulating loop, and the cold source circularly flows in the first cold source circulating loop;
or the second auxiliary temperature adjusting loop, the first heat source circulating loop and the first cold source circulating loop are opened, the first auxiliary temperature adjusting loop is closed, the heat source circularly flows in the first heat source circulating loop, and the cold source circularly flows in the second auxiliary temperature adjusting loop and the first cold source circulating loop.
In a fourth aspect, the invention further provides a control method of the cold and heat source supply system for the ocean thermoelectric power generation experimental platform during the starting stage of the cold and heat source supply system, which includes setting the temperature of the high-temperature heat source to be input at the evaporator side of the OTEC to be ThThe temperature of the low-temperature cold source required to be input at the condenser side of the OTEC is TcThe real-time heat source temperature at the outlet of the heat flow side of the heat exchanger in the second heat source circulation loop is Th0The real-time cold source temperature at the cold flow side outlet of the heat exchanger in the second cold source circulation loop is Tc0The initial ambient water temperature injected into the cold and heat source supply system is T0；
When T is0＞ThMeanwhile, the cold and heat source supply method includes:
(a.1) starting the air-cooled heat pump unit, closing the water source heat pump unit, starting the heat source water pump, the cold source water pump and the auxiliary water pump, and closing a switch valve on a bypass pipeline of the heat exchanger to open the first auxiliary temperature regulating loop, the second heat source circulation loop and the second cold source circulation loop, and close the bypass pipeline of the heat exchanger and the first auxiliary temperature regulating loop; the heat source circularly flows in the first auxiliary temperature adjusting loop and the second heat source circulating loop at the same time, and the cold source circularly flows in the second cold source circulating loop;
(a.2) waiting for Th0Down to ThWhen the temperature of the water is higher than the set temperature,the air-cooled heat pump unit is kept started, the water source heat pump unit is kept closed, the heat source water pump is closed, the cold source water pump and the auxiliary water pump are kept started, and the switch valve on the bypass pipeline of the heat exchanger is opened, so that the first auxiliary temperature adjusting loop and the second heat source circulation loop are closed, and the second auxiliary temperature adjusting loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are opened; the cold source circularly flows in the second auxiliary temperature regulating loop, and simultaneously the cold source also crosses the heat exchanger to flow in the second cold source circulating loop;
(a.3) waiting for Tc0Down to TcWhen the performance test experiment is started, the air-cooled heat pump unit is started, the water source heat pump unit and the heat source water pump are started, the cold source water pump and the auxiliary water pump are started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are kept opened, and the performance test experiment can be started.
When in use
Figure BDA0003043918640000041
Meanwhile, the cold and heat source supply method includes:
(b.1) starting the air-cooled heat pump unit, closing the water source heat pump unit, starting the heat source water pump, the cold source water pump and the auxiliary water pump, and closing a switch valve on a bypass pipeline of the heat exchanger to open a second auxiliary temperature adjusting loop, a second heat source circulating loop and a second cold source circulating loop, and close the first auxiliary temperature adjusting loop and the bypass pipeline of the heat exchanger; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second auxiliary temperature regulating loop and the second cold source circulating loop;
(b.2) treating
Figure BDA0003043918640000042
And is
Figure BDA0003043918640000043
When the heat exchanger is started, the air-cooled heat pump unit is turned off, the water source heat pump unit is started, the heat source water pump and the cold source water pump are kept started, the auxiliary water pump is turned off, and the switch valve on the bypass pipeline of the heat exchanger is opened to enable the first heat exchanger to be startedThe auxiliary temperature regulating loop and the second auxiliary temperature regulating loop are closed, and the second heat source circulation loop, the second cold source circulation loop and the heat exchanger bypass pipeline are opened; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second cold source circulating loop across the heat exchanger;
(b.3) waiting for Th0＝ThWhen the cold source heat pump unit is started, the water source heat pump unit is closed, the heat source water pump is closed, the cold source water pump is kept started, the auxiliary water pump is started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the first auxiliary temperature adjusting loop and the second heat source circulation loop are closed, the second auxiliary temperature adjusting loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are opened, and the cold source flows in the second auxiliary temperature adjusting loop and also flows in the second cold source circulation loop across the heat exchanger;
(b.4) waiting for Tc0＝TcWhen the performance test experiment is started, the air-cooled heat pump unit is started, the water source heat pump unit and the heat source water pump are started, the cold source water pump and the auxiliary water pump are started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are kept opened, and the performance test experiment can be started.
Wherein, step (b.3) and step (b.4) can also be replaced by:
wait for Tc0＝TcWhen the air-cooled heat pump unit is started, the water source heat pump unit is closed, the heat source water pump is kept started, the cold source water pump is closed, the auxiliary water pump is started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the second auxiliary temperature adjusting loop and the second cold source circulation loop are closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop and the bypass pipeline of the heat exchanger are opened, and the heat source flows in the first auxiliary temperature adjusting loop and the second heat source circulation loop;
wait for Th0＝ThWhen the air-cooled heat pump unit is started, the water source heat pump unit is started, the heat source water pump is started, the cold source water pump is started, the auxiliary water pump is started, the switch valve on the bypass pipeline of the heat exchanger is opened, and the second auxiliary temperature adjusting loop is closedAnd the first auxiliary temperature regulating loop, the second heat source circulation loop, the second cold source circulation loop and the heat exchanger bypass pipeline are kept open, and then the performance test experiment can be started.
When in use
Figure BDA0003043918640000051
Meanwhile, the cold and heat source supply method includes:
(c.1) closing the air-cooled heat pump unit, starting the water source heat pump unit, the heat source water pump and the cold source water pump, and closing the auxiliary water pump and the switch valves on the heat exchanger bypass pipeline to close the first auxiliary temperature regulating loop and the second auxiliary temperature regulating loop, open the second heat source circulation loop and the second cold source circulation loop, and close the heat exchanger bypass pipeline; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second cold source circulating loop;
(c.2) treating
Figure BDA0003043918640000052
And is
Figure BDA0003043918640000053
When (a) is used, steps (b.2), (b.3) and (b.4) are employed.
Benefits of the present application include, but are not limited to:
the cold and heat source supply and control method for the ocean temperature difference energy power generation experiment platform provided by the invention has the simulation functions of surface layer temperature seawater (heat source) and deep layer cold seawater (cold source), can adjust the temperature required by the operation of the OTEC experiment platform according to the ambient water temperature, has large simulation water amount, simple control operation, stability and high efficiency, can operate for a long time, and is suitable for long-time operation test of the high-power ocean temperature difference energy power generation platform.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of a cold and heat source supply system for an ocean thermoelectric power generation experimental platform according to embodiment 1 of the present invention (OTEC performance testing stage);
fig. 2 is a schematic diagram of a cold and heat source supply system for an ocean thermoelectric power generation experimental platform according to embodiment 2 of the present invention (a supply system start-up phase);
fig. 3 is a schematic diagram of the application of the cold and heat source supply system for the ocean thermoelectric power generation experimental platform provided by the invention to an OTEC experimental platform;
in the figure, 1, a water source heat pump unit; 2. an air-cooled heat pump unit; 3. a heat source heat preservation water tank; 4. a cold source heat preservation water tank; 5. a heat source water pump; 6. a cold source water pump; 7. an auxiliary water pump; 8. a heat exchanger; 9. a stop valve; 10. a filter; 11. a one-way valve; 12. an electrically operated on-off valve; 13. a flow sensor; 14. a temperature sensor.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Therefore, the scope of the invention is not limited by the specific embodiments disclosed below.
For convenience of description, the respective temperatures involved in the following examples are set as follows:
setting the temperature of a high-temperature heat source needing to be input at the evaporator side of the OTEC to be ThThe temperature of the low-temperature cold source required to be input at the condenser side of the OTEC is Tc。
Example 1:
as shown in fig. 1, the invention provides a cold and heat source supply system for an ocean thermoelectric power generation experimental platform, which is suitable for the performance test stage of OTEC and comprises a water source heat pump unit 1, a heat source heat preservation water tank 3, a heat source water pump 5, a cold source heat preservation water tank 4, a cold source water pump 6, an air-cooled heat pump unit 2 and an auxiliary water pump 7.
Specifically, a condenser side of the water source heat pump unit 1, a heat source heat preservation water tank 3, a heat source water pump 5 and an evaporator side of the OTEC are sequentially connected through pipelines to form a first heat source circulation loop;
the evaporator side of the water source heat pump unit 1, the cold source heat preservation water tank 4, the cold source water pump 6 and the condenser side of the OTEC are sequentially connected through pipelines to form a first cold source circulation loop;
the heat source heat preservation water tank 3, the auxiliary water pump 7 and the evaporator side of the air-cooled heat pump unit 2 are sequentially connected through pipelines to form a first auxiliary temperature regulating loop; the cold source heat preservation water tank 4, the auxiliary water pump 7 and the evaporator side of the air-cooled heat pump unit 2 are sequentially connected through pipelines to form a second auxiliary temperature regulating loop.
In the water source heat pump unit 1, heat of a cold source is conveyed to a heat source according to the principle of energy conservation, so that the temperature of the cold source is reduced, the temperature of the heat source is increased, but the heat transferred from the cold source to the heat source is more than the heat required by the heat source. Under the condition of ensuring that one side of the heat source or the cold source reaches the set temperature, the other side of the heat source or the cold source is higher than the set temperature. Therefore, in the cold and heat source supply system provided by the invention, after the temperature of one side of the cold source or the heat source reaches the set temperature, the temperature of the other side needs to be reduced through the first auxiliary temperature regulating loop or the second auxiliary temperature regulating loop so as to maintain the temperature of the cold source in the heat source heat-preserving water tank 3 and the cold source in the cold source heat-preserving water tank 4 as the set value.
Specifically, the air-cooled heat pump unit 2 is connected with the heat source heat preservation water tank 3 and the cold source heat preservation water tank 4, the first auxiliary temperature regulation loop or the second auxiliary temperature regulation loop can be switched through the stop valve 9 connected with the inlet and the outlet of the heat preservation water tank, and heat dissipation and cooling are performed on the heat source water path or the cold source water path as required.
In the OTEC performance test stage, the control method of the cold and heat source supply system for the ocean thermal energy power generation experimental platform provided by the invention comprises the steps of opening the water source heat pump unit 1, the air-cooled heat pump unit 2, the heat source water pump 5, the cold source water pump 6 and the auxiliary water pump 7, then opening the first auxiliary temperature adjusting loop, the first heat source circulating loop and the first cold source circulating loop, closing the second auxiliary temperature adjusting loop, enabling the heat source to circularly flow in the first auxiliary temperature adjusting loop and the first heat source circulating loop, and enabling the cold source to circularly flow in the first cold source circulating loop.
Or the second auxiliary temperature adjusting loop, the first heat source circulating loop and the first cold source circulating loop are opened, the first auxiliary temperature adjusting loop is closed, the heat source circularly flows in the first heat source circulating loop, and the cold source circularly flows in the first cold source circulating loop and the second auxiliary temperature adjusting loop.
Taking the cold source reaching the set temperature as an example, the cold source temperature in the water source heat pump unit 1 is equal to the set temperature T at the condenser side of the OTECcUnder the condition that the temperature of the heat source water output by the water source heat pump unit 1 is higher than the set temperature T at the evaporator side of the OTEChTherefore, the heat source needs to be further cooled to the set temperature T by the evaporator of the air-cooled heat pump unit 2h。
The cold source temperature is lower, in order to avoid the cold source to lead to the air-cooled heat pump set 2 to appear local icing when further reducing the temperature through the air-cooled heat pump set 2 during practical application, preferably adopt above-mentioned make the cold source temperature reduce to T through water source heat pump set 1cThen the air-cooled heat pump unit 2 is used for cooling the heat source.
The heat source heat preservation water tank 3 and the cold source heat preservation water tank 4 have the functions of heat preservation and heat source and cold source storage, and also have the function of buffering and adjusting the temperature of the cold and heat source, so that the stability of the temperature of the cold and heat source is ensured, the characteristics of stable energy of ocean temperature difference energy are better met, the control difficulty of a cold and heat source supply system is reduced, and the control precision of the temperature of the cold and heat source is improved.
Usually, set up 2 delivery ports in heat source holding water box 3 and cold source holding water box 4's bottom, the top sets up 2 water inlets, and the water that the water route of being convenient for adjust the temperature got into the water tank and the water that gets into the water tank from water source heat pump set 1 have sufficient time intensive mixing to adjust the temperature before flowing out from the water tank delivery port.
Fig. 3 is a schematic diagram of the cooling and heating source supply system provided by the present invention for providing a cooling and heating source for the OTEC.
Example 2:
for convenience of description, the temperatures involved are set as follows:
the measured actual temperature of the outlet temperature sensor at the heat flow side of the heat exchanger in the second heat source circulation loopTime heat source temperature is Th0And the real-time cold source temperature measured by the cold flow side outlet temperature sensor of the heat exchanger in the second cold source circulation loop is Tc0The initial ambient water temperature injected into the cold and heat source supply system is T0。
Before the OTEC experiment platform works, a heat source and a cold source with required temperature need to be established. In order to facilitate the rapid establishment of the cold source and the heat source with the required temperature in the start-up stage of the cold source supply system, as shown in fig. 2, the invention further provides a cold source supply system for an ocean thermoelectric power generation experimental platform, which is suitable for the start-up stage of the cold source supply system, and further comprises a heat exchanger 8 and a heat exchanger bypass pipeline on the basis of embodiment 1.
Specifically, a cold flow side inlet and a cold flow side outlet of the heat exchanger 8 are connected by a heat exchanger bypass pipeline, or a heat flow side inlet and a heat flow side outlet of the heat exchanger 8 are connected by the heat exchanger bypass pipeline, and switch valves, specifically, an electric switch valve 12 can be selected and used on the inlet and outlet pipelines of the heat exchanger bypass pipeline and the bypassed side. In practical applications, the cold source and the heat source can be bypassed across the heat exchanger 8 when the cold source and the heat source do not need to exchange heat through the heat exchanger 8.
For example, a heat exchanger bypass pipeline connecting an inlet and an outlet of the cold flow side is arranged on the cold flow side of the heat exchanger 8, and the electric switch valves 12 are respectively arranged on the inlet and the outlet of the cold flow side and the heat exchanger bypass pipeline, so that the cold flow side of the heat exchanger 8 can be quickly cut off or communicated as required in the actual operation process.
The condenser side of the water source heat pump unit 1, the heat source heat preservation water tank 3, the heat source water pump 5, the heat flow side of the heat exchanger 8 and the evaporator side of the OTEC are sequentially connected through pipelines to form a second heat source circulation loop;
the evaporator side of the water source heat pump unit 1, the cold source heat preservation water tank 4, the cold source water pump 6, the cold flow side of the heat exchanger 8 and the condenser side of the OTEC are sequentially connected through pipelines to form a second cold source circulation loop.
In order to reduce the interference of the ambient temperature in the process of flowing the cold and heat source and improve the temperature control accuracy, the outside of the pipeline is preferably coated with a heat insulation layer.
Generally, the heat source water pump 5, the cold source water pump 6 and the auxiliary water pump 7 are all provided with a filter 10 on the inlet pipeline, and are all provided with a one-way valve 11 on the outlet pipeline.
In order to control the working state of each loop according to the operation requirement of the system conveniently, in one specific embodiment, a stop valve 9 is arranged at the inlet and the outlet of the heat preservation water tank of each of a first auxiliary temperature regulation loop and a second auxiliary temperature regulation loop which are composed of the air-cooled heat pump unit 2, the auxiliary water pump 7, the heat source heat preservation water tank 3 and the cold source heat preservation water tank 4, so that the air-cooled heat pump unit 2 and the auxiliary water pump 7 can be switched between the first auxiliary temperature regulation loop and the second auxiliary temperature regulation loop at any time according to the actual operation requirement.
Furthermore, the cold and heat source supply system for the ocean thermal energy power generation experimental platform provided by the invention further comprises a parameter monitoring unit and a control unit, wherein the parameter monitoring unit is used for monitoring the temperature and the flow of each key position in the heat source circulation loop, the cold source circulation loop and the auxiliary temperature regulation loop, and the control unit is used for controlling the opening and closing of the auxiliary water pump 7 and the heat exchanger bypass pipeline according to the temperature and the flow and controlling the opening and closing and the variable frequency operation of the water source heat pump unit 1, the air cooling heat pump unit 2, the heat source water pump 5 and the cold source water pump 6.
The monitoring unit and the control unit belong to a secondary monitoring system, can upload monitored parameters to a superior control system, and are controlled by the superior control system.
When the ambient water temperature T of the external injection system0Lower than the average value of the set temperature of the cold and heat sources
Figure BDA0003043918640000091
In particular below the cold source setpoint TcWhen the temperature of the whole system is raised, the heat exchanger 8 is matched with the water source heat pump unit 1; when T is0Higher than the set temperature T of the heat sourcehWhen the system is cooled, the heat exchanger 8 is matched with the air-cooled heat pump unit 2 to cool the whole system.
In the starting stage of the cold and heat source supply system, the control method of the cold and heat source supply system is based on the initial ambient water temperature T injected into the cold and heat source supply system0There are three cases as follows.
When T is0＞ThMeanwhile, the cold and heat source supply method comprises the following steps:
(a.1) starting an air-cooled heat pump unit 2, closing a water source heat pump unit 1, starting a heat source water pump 5, a cold source water pump 6 and an auxiliary water pump 7, and closing a switch valve 12 on a bypass pipeline of a heat exchanger to open a first auxiliary temperature regulating loop, a second heat source circulation loop and a second cold source circulation loop and close the bypass pipeline of the heat exchanger and the first auxiliary temperature regulating loop; the heat source circularly flows in the first auxiliary temperature adjusting loop and the second heat source circulating loop at the same time, and the cold source circularly flows in the second cold source circulating loop; in the process, the evaporator of the air-cooled heat pump unit 2 absorbs heat of the heat source to reduce the temperature of the heat source, the cold source and the heat source exchange heat in the heat exchanger 8, and the temperature of the cold source is gradually reduced;
(a.2) waiting for Th0Down to ThWhen the air-cooled heat pump unit 2 is started, the water source heat pump unit 1 is closed, the heat source water pump 5 is closed, the cold source water pump 6 and the auxiliary water pump 7 are started, the switch valve 12 on the bypass pipeline of the heat exchanger is opened, so that the first auxiliary temperature adjusting loop and the second heat source circulation loop are closed, and the second auxiliary temperature adjusting loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are opened; the cold source circularly flows in the second auxiliary temperature adjusting loop, and simultaneously the cold source also crosses the heat exchanger 8 to flow in the second cold source circulating loop, and the evaporator of the air-cooled heat pump unit 2 absorbs the heat of the cold source to reduce the temperature of the cold source;
(a.3) waiting for Tc0Down to TcWhen the air-cooled heat pump unit 2 is started, the water source heat pump unit 1 and the heat source water pump 5 are started, the cold source water pump 6 and the auxiliary water pump 7 are started, the switch valve 12 on the heat exchanger bypass pipeline is opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop, the second cold source circulation loop and the heat exchanger bypass pipeline are opened, and then the performance test experiment can be started.
When in use
Figure BDA0003043918640000101
Meanwhile, the cold and heat source supply method comprises the following steps:
(b.1) starting the air-cooled heat pump unit 2, closing the water source heat pump unit 1, starting the heat source water pump 5, the cold source water pump 6 and the auxiliary water pump 7, and closing the switch valve 12 on the bypass pipeline of the heat exchanger to open the second auxiliary temperature adjusting loop, the second heat source circulation loop and the second cold source circulation loop and close the first auxiliary temperature adjusting loop and the bypass pipeline of the heat exchanger; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second auxiliary temperature regulating loop and the second cold source circulating loop; in the process, the evaporator of the air-cooled heat pump unit 2 absorbs the heat of the cold source to reduce the temperature of the cold source, when the cold source and the heat source flow through the heat exchanger 8, the temperature of the cold source cooled by the air-cooled heat pump unit 2 is slightly lower than that of the heat source, and the temperature difference between the cold source and the heat source promotes the heat exchange of the cold source and the heat source in the heat exchanger 8, so that the temperature of the heat source is also reduced along with the cold source, but a temperature difference exists between the cold source and the heat source;
(b.2) treating
Figure BDA0003043918640000111
And is
Figure BDA0003043918640000112
When the air-cooled heat pump unit 2 is closed, the water source heat pump unit 1 is started, the heat source water pump 5 and the cold source water pump 6 are kept started, the auxiliary water pump 7 is closed, the switch valve 12 on the heat exchanger bypass pipeline is opened, the first auxiliary temperature adjusting loop and the second auxiliary temperature adjusting loop are closed, and the second heat source circulating loop, the second cold source circulating loop and the heat exchanger bypass pipeline are opened; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second cold source circulating loop across the heat exchanger 8; in the process, the water source heat pump unit 1 transmits the heat of the cold source to the heat source, the temperature difference of the cold source and the heat source is increased, and the temperatures of the cold source and the heat source are respectively towards TcAnd ThApproaching;
(b.3) waiting for Th0＝ThWhen (at this time T)c0Is slightly larger than Tc) Starting the air-cooled heat pump unit 2, closing the water source heat pump unit 1, closing the heat source water pump 5, keeping the cold source water pump 6 started, starting the auxiliary water pump 7, keeping the switch valve 12 on the bypass pipeline of the heat exchanger open, closing the first auxiliary temperature adjusting loop and the second heat source circulation loop, and closing the second auxiliary temperature adjusting loopThe second cold source circulation loop and the heat exchanger bypass pipeline are opened, and the cold source flows in the second auxiliary temperature regulating loop and also flows in the second cold source circulation loop across the heat exchanger 8; in the process, the evaporator of the air-cooled heat pump unit 2 absorbs the heat of the cold source to reduce the temperature of the cold source;
(b.4) waiting for Tc0＝TcWhen the air-cooled heat pump unit 2 is started, the water source heat pump unit 1 and the heat source water pump 5 are started, the cold source water pump 6 and the auxiliary water pump 7 are started, the switch valve 12 on the heat exchanger bypass pipeline is opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop, the second cold source circulation loop and the heat exchanger bypass pipeline are opened, and then the performance test experiment can be started.
Wherein, step (b.3) and step (b.4) can also be replaced by:
wait for Tc0＝TcWhen the air-cooled heat pump unit 2 is started, the water source heat pump unit 1 is closed, the heat source water pump 5 is kept started, the cold source water pump 6 is closed, the auxiliary water pump 7 is started, the switch valve 12 on the heat exchanger bypass pipeline is kept opened, so that the second auxiliary temperature adjusting loop and the second cold source circulation loop are closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop and the heat exchanger bypass pipeline are opened, and the heat source flows in the first auxiliary temperature adjusting loop and the second heat source circulation loop; in the process, the evaporator of the air-cooled heat pump unit 2 absorbs heat of the heat source to reduce the temperature of the heat source;
wait for Th0＝ThWhen the air-cooled heat pump unit 2 is started, the water source heat pump unit 1 is started, the heat source water pump 5 is started, the cold source water pump 6 is started, the auxiliary water pump 7 is started, the switch valve 12 on the heat exchanger bypass pipeline is opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulating loop, the second cold source circulating loop and the heat exchanger bypass pipeline are opened, and then the performance test experiment can be started.
When in use
Figure BDA0003043918640000121
In particular lower than the set temperature T of the cold sourcecSupply of cold and heat sourcesThe method specifically comprises the following steps:
(c.1) closing the air-cooled heat pump unit 2, starting the water source heat pump unit 1, the heat source water pump 5 and the cold source water pump 6, and closing the auxiliary water pump 7 and the switch valve 12 on the heat exchanger bypass pipeline to close the first auxiliary temperature adjusting loop and the second auxiliary temperature adjusting loop, open the second heat source circulation loop and the second cold source circulation loop, and close the heat exchanger bypass pipeline; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second cold source circulating loop; in the water source heat pump unit 1, partial heat of the cold source is transferred to the heat source, so that the temperature of the heat source is higher than that of the cold source, and the heat exchange between the cold source and the heat source in the heat exchanger 8 is realized, so that the temperature of the cold source and the heat source is close to that of the cold source;
(c.2) treating
Figure BDA0003043918640000122
And is
Figure BDA0003043918640000123
When (a) is used, steps (b.2), (b.3) and (b.4) are employed.
It is understood that in the above temperature comparison process, "═ can be enough to satisfy a certain temperature difference range, for example, the temperature difference is within (-0.5 ℃, 0.5 ℃) and is considered to be approximately equal.
It can be understood that when the on-off valve on the bypass pipeline of the heat exchanger is opened, the on-off valve on the inlet and outlet pipeline on the bypass side is closed, and vice versa.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.

Claims (9)

1. A cold and heat source supply system for ocean thermoelectric power generation experiment platform, its characterized in that includes:
a water source heat pump unit;
the system comprises a heat source heat-preserving water tank and a heat source water pump, wherein the condenser side of the water source heat pump unit, the heat source heat-preserving water tank, the heat source water pump and the evaporator side of the OTEC are sequentially connected through pipelines to form a first heat source circulation loop;
the system comprises a cold source heat-insulation water tank and a cold source water pump, wherein the evaporator side of the water source heat pump unit, the cold source heat-insulation water tank, the cold source water pump and the condenser side of the OTEC are sequentially connected through pipelines to form a first cold source circulation loop;
the heat source heat-preservation water tank, the auxiliary water pump and the evaporator side of the air-cooled heat pump unit are sequentially connected through pipelines to form a first auxiliary temperature regulating loop; the cold source heat-preservation water tank, the auxiliary water pump and the evaporator side of the air-cooled heat pump unit are sequentially connected through pipelines to form a second auxiliary temperature regulating loop;
the heat exchanger comprises a heat exchanger and a heat exchanger bypass pipeline, wherein the heat exchanger bypass pipeline connects a cold flow side inlet and a cold flow side outlet of the heat exchanger, or the heat exchanger bypass pipeline connects a heat flow side inlet and a heat flow side outlet of the heat exchanger, and the heat exchanger bypass pipeline and inlet and outlet pipelines at the bypassed side are respectively provided with a switch valve;
the condenser side of the water source heat pump unit, the heat source heat preservation water tank, the heat source water pump, the heat flow side of the heat exchanger and the evaporator side of the OTEC are sequentially connected through pipelines to form a second heat source circulation loop;
the evaporator side of the water source heat pump unit, the cold source heat preservation water tank, the cold source water pump, the cold flow side of the heat exchanger and the condenser side of the OTEC are sequentially connected through pipelines to form a second cold source circulation loop.
2. The cold and heat source supply system for the ocean thermal energy power generation experiment platform according to claim 1, wherein the outside of the pipeline is coated with a heat insulation layer.
3. The cold and heat source supply system for the ocean thermal energy power generation experimental platform as claimed in claim 1, wherein the heat source water pump, the cold source water pump and the auxiliary water pump are all provided with filters on inlet pipelines, and the outlet pipelines are all provided with one-way valves; and stop valves are respectively arranged on the second heat source circulation loop, the second cold source circulation loop and the heat exchanger bypass pipeline.
4. The cold and heat source supply system for the ocean thermal energy power generation experiment platform according to claim 1, further comprising a parameter monitoring unit and a control unit, wherein the parameter monitoring unit is used for monitoring the temperature and the flow in the first heat source circulation loop, the second heat source circulation loop, the first cold source circulation loop, the second cold source circulation loop, the first auxiliary temperature regulation loop and the second auxiliary temperature regulation loop, and the control system is used for controlling the opening and closing of the auxiliary water pump and the heat exchanger bypass pipeline and controlling the opening and closing and the variable frequency operation of the water source heat pump unit, the air-cooled heat pump unit, the heat source water pump and the cold source water pump according to the temperature and the flow.
5. A control method of a cold and heat source supply system for an ocean thermal energy power generation experimental platform according to claim 1, in the performance test stage of OTEC, the control method comprising: the water source heat pump unit, the air cooling heat pump unit, the heat source water pump, the cold source water pump and the auxiliary water pump are started, so that the first auxiliary temperature adjusting loop, the first heat source circulating loop and the first cold source circulating loop are opened, the second auxiliary temperature adjusting loop is closed, the heat source circularly flows in the first auxiliary temperature adjusting loop and the first heat source circulating loop, and the cold source circularly flows in the first cold source circulating loop;
or the second auxiliary temperature adjusting loop, the first heat source circulating loop and the first cold source circulating loop are opened, the first auxiliary temperature adjusting loop is closed, the heat source circularly flows in the first heat source circulating loop, and the cold source circularly flows in the second auxiliary temperature adjusting loop and the first cold source circulating loop.
6. The control method of the cold and heat source supply system for the ocean thermal energy power generation experimental platform according to claim 1, wherein the temperature of the high-temperature heat source required to be input at the evaporator side of the OTEC is set to be ThThe temperature of the low-temperature cold source required to be input at the condenser side of the OTEC is TcThe real-time heat source temperature at the outlet of the heat flow side of the heat exchanger in the second heat source circulation loop is Th0The real-time cold source temperature at the cold flow side outlet of the heat exchanger in the second cold source circulation loop is Tc0The initial ambient water temperature injected into the cold and heat source supply system is T0In the starting phase of the cold and heat source supply system, when T is0＞ThMeanwhile, the cold and heat source supply method includes:
(a.1) starting the air-cooled heat pump unit, closing the water source heat pump unit, starting the heat source water pump, the cold source water pump and the auxiliary water pump, and closing a switch valve on a bypass pipeline of the heat exchanger to open the first auxiliary temperature regulating loop, the second heat source circulation loop and the second cold source circulation loop, and close the bypass pipeline of the heat exchanger and the first auxiliary temperature regulating loop; the heat source circularly flows in the first auxiliary temperature adjusting loop and the second heat source circulating loop at the same time, and the cold source circularly flows in the second cold source circulating loop;
(a.2) waiting for Th0Down to ThWhen the air-cooled heat pump unit is started, the water source heat pump unit is closed, the heat source water pump is closed, the cold source water pump and the auxiliary water pump are started, the switch valve on the bypass pipeline of the heat exchanger is opened, the first auxiliary temperature adjusting loop and the second heat source circulation loop are closed, and the second auxiliary temperature adjusting loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are opened; the cold source circularly flows in the second auxiliary temperature regulating loop, and simultaneously the cold source also crosses the heat exchanger to flow in the second cold source circulating loop;
(a.3) waiting for Tc0Down to TcWhen the performance test experiment is started, the air-cooled heat pump unit is started, the water source heat pump unit and the heat source water pump are started, the cold source water pump and the auxiliary water pump are started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are kept opened, and the performance test experiment can be started.
7. The control method of the cold and heat source supply system for the ocean thermal energy power generation experimental platform according to claim 1, wherein the temperature of the high-temperature heat source required to be input at the evaporator side of the OTEC is set to be ThThe temperature of the low-temperature cold source required to be input at the condenser side of the OTEC is TcThe real-time heat source temperature at the outlet of the heat flow side of the heat exchanger in the second heat source circulation loop is Th0The real-time cold source temperature at the cold flow side outlet of the heat exchanger in the second cold source circulation loop is Tc0The initial ambient water temperature injected into the cold and heat source supply system is T0In the starting phase of the cold and heat source supply system, the method is characterized in that
Figure FDA0003508310340000031
Meanwhile, the cold and heat source supply method includes:
(b.1) starting the air-cooled heat pump unit, closing the water source heat pump unit, starting the heat source water pump, the cold source water pump and the auxiliary water pump, and closing a switch valve on a bypass pipeline of the heat exchanger to open a second auxiliary temperature adjusting loop, a second heat source circulating loop and a second cold source circulating loop, and close the first auxiliary temperature adjusting loop and the bypass pipeline of the heat exchanger; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second auxiliary temperature regulating loop and the second cold source circulating loop;
(b.2) treating
Figure FDA0003508310340000032
And is
Figure FDA0003508310340000033
When the air-cooled heat pump is turned offThe unit starts the water source heat pump unit, keeps the heat source water pump and the cold source water pump started, closes the auxiliary water pump, opens the switch valve on the heat exchanger bypass pipeline, closes the first auxiliary temperature adjusting loop and the second auxiliary temperature adjusting loop, opens the second heat source circulating loop, the second cold source circulating loop and the heat exchanger bypass pipeline; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second cold source circulating loop across the heat exchanger;
(b.3) waiting for Th0＝ThWhen the cold source heat pump unit is started, the water source heat pump unit is closed, the heat source water pump is closed, the cold source water pump is kept started, the auxiliary water pump is started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the first auxiliary temperature adjusting loop and the second heat source circulation loop are closed, the second auxiliary temperature adjusting loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are opened, and the cold source flows in the second auxiliary temperature adjusting loop and also flows in the second cold source circulation loop across the heat exchanger;
(b.4) waiting for Tc0＝TcWhen the performance test experiment is started, the air-cooled heat pump unit is started, the water source heat pump unit and the heat source water pump are started, the cold source water pump and the auxiliary water pump are started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop, the second cold source circulation loop and the bypass pipeline of the heat exchanger are kept opened, and the performance test experiment can be started.
8. The control method of the cold and heat source supply system for the ocean thermal energy power generation experimental platform according to claim 7, wherein the step (b.3) is replaced by:
wait for Tc0＝TcWhen the air-cooled heat pump unit is started, the water source heat pump unit is closed, the heat source water pump is kept started, the cold source water pump is closed, the auxiliary water pump is started, the switch valve on the bypass pipeline of the heat exchanger is kept opened, the second auxiliary temperature adjusting loop and the second cold source circulation loop are closed, the first auxiliary temperature adjusting loop, the second heat source circulation loop and the bypass pipeline of the heat exchanger are opened, and the heat source flows in the first auxiliary temperature adjusting loop and the second heat source circulation loop；
Step (b.4) is replaced by:
wait for Th0＝ThWhen the air-cooled heat pump unit is started, the water source heat pump unit is started, the heat source water pump is started, the cold source water pump is started, the auxiliary water pump is started, the switch valve on the heat exchanger bypass pipeline is kept opened, the second auxiliary temperature adjusting loop is closed, the first auxiliary temperature adjusting loop, the second heat source circulating loop, the second cold source circulating loop and the heat exchanger bypass pipeline are kept opened, and then the performance test experiment can be started.
9. The method as claimed in claim 7, wherein the method further comprises the step of controlling the cold and heat source supply system of the experimental platform for ocean thermal energy power generation
Figure FDA0003508310340000041
Meanwhile, the cold and heat source supply method includes:
(c.1) closing the air-cooled heat pump unit, starting the water source heat pump unit, the heat source water pump and the cold source water pump, and closing the auxiliary water pump and the switch valves on the heat exchanger bypass pipeline to close the first auxiliary temperature regulating loop and the second auxiliary temperature regulating loop, open the second heat source circulation loop and the second cold source circulation loop, and close the heat exchanger bypass pipeline; the heat source circularly flows in the second heat source circulating loop, and the cold source circularly flows in the second cold source circulating loop;
(c.2) treating
Figure FDA0003508310340000051
And is
Figure FDA0003508310340000052
When (a) is used, steps (b.2), (b.3) and (b.4) are employed.
CN202110465859.XA 2021-04-28 2021-04-28 Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method Active CN112984866B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110465859.XA CN112984866B (en) 2021-04-28 2021-04-28 Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110465859.XA CN112984866B (en) 2021-04-28 2021-04-28 Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method

Publications (2)

Publication Number Publication Date
CN112984866A CN112984866A (en) 2021-06-18
CN112984866B true CN112984866B (en) 2022-03-25

Family

ID=76340554

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110465859.XA Active CN112984866B (en) 2021-04-28 2021-04-28 Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method

Country Status (1)

Country Link
CN (1) CN112984866B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114706434B (en) * 2022-04-02 2023-01-10 山东大学 Intelligent temperature control system for marine climate environment simulation platform
CN117605636A (en) * 2023-11-21 2024-02-27 中海石油(中国)有限公司 Thermoelectric power generation system suitable for offshore platform low-temperature heat source

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101025146A (en) * 2007-04-06 2007-08-29 李书刚 Generating system apparatus utilizing heat energy in water at normal temperature
CN102213199A (en) * 2011-06-02 2011-10-12 东方电气集团东方汽轮机有限公司 Ocean thermal energy conversion method and ocean thermal energy conversion device
CN109375018A (en) * 2018-11-06 2019-02-22 国家海洋局第海洋研究所 Ocean thermal energy power generation simulated testing system
CN111238186A (en) * 2020-02-27 2020-06-05 郑州欧纳尔冷暖科技有限公司 Double-source constant-temperature vacuum drying system
KR102114397B1 (en) * 2018-11-26 2020-06-17 주식회사 지앤지테크놀러지 Ocean temperature difference generation system using heat pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101025146A (en) * 2007-04-06 2007-08-29 李书刚 Generating system apparatus utilizing heat energy in water at normal temperature
CN102213199A (en) * 2011-06-02 2011-10-12 东方电气集团东方汽轮机有限公司 Ocean thermal energy conversion method and ocean thermal energy conversion device
CN109375018A (en) * 2018-11-06 2019-02-22 国家海洋局第海洋研究所 Ocean thermal energy power generation simulated testing system
KR102114397B1 (en) * 2018-11-26 2020-06-17 주식회사 지앤지테크놀러지 Ocean temperature difference generation system using heat pump
CN111238186A (en) * 2020-02-27 2020-06-05 郑州欧纳尔冷暖科技有限公司 Double-source constant-temperature vacuum drying system

Also Published As

Publication number Publication date
CN112984866A (en) 2021-06-18

Similar Documents

Publication Publication Date Title
CN112984866B (en) Cold and heat source supply system for ocean temperature difference energy power generation experiment platform and control method
WO2013051642A1 (en) System using solar energy
WO2013078844A1 (en) Closed circulating water cooling apparatus and method
CN209213961U (en) Hazards in Power Plant fused salt thermal storage electric boiler combined heat integrated system
CN102172800A (en) Cooling system and method for laser processing equipment capable of simultaneously providing cold water and warm water
CN112899706A (en) Water electrolysis hydrogen production system and control method thereof
WO2013078843A1 (en) Closed circulating water cooling apparatus and method therefor
JP2007064049A (en) Waste heat recovery system for gas turbine cogeneration equipment
CN110440505A (en) A kind of wind-tunnel temperature control system of Two-way Cycle refrigerating medium Collaborative Control
CN112678139A (en) Ship cabin heating system using fuel cell heat dissipation water as heat source
CN107394072A (en) The heat management system and hybrid vehicle of a kind of electrokinetic cell
JP4965414B2 (en) Temperature control of cathode inlet air flow for fuel cell systems
CN204082458U (en) There is the associated heating resources carbon dioxide power take-off of heat accumulation function
KR100821960B1 (en) Local heating system for energy saving in cogeneration
CN109458311B (en) Water cooling system and water temperature control method thereof, three-way valve and control method thereof
JP6582316B2 (en) Sealing gas supply device
CN103607101B (en) A kind of DC converter valve immersion thermoelectric cooling unit
JP4016870B2 (en) Heat pump water heater
JP3743375B2 (en) Heat pump water heater
CN115835593A (en) Cold plate assembly, heat dissipation assembly, system and method for high heat flux electronic equipment
CN104792002A (en) Boiled water heating system using double-acting thermoacoustic heat pump as heater
JP2004095360A (en) Fuel cell system and operating method therefor
CN106507868B (en) A kind of diesel engine intelligentized control method cooling system
US11612082B2 (en) Cooling system
CN112676549A (en) Control system of high-temperature die temperature machine special for die casting

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant