CN110579005A - air source coupling ground source heat pump system, control method, storage medium and processor - Google Patents
air source coupling ground source heat pump system, control method, storage medium and processor Download PDFInfo
- Publication number
- CN110579005A CN110579005A CN201910765795.8A CN201910765795A CN110579005A CN 110579005 A CN110579005 A CN 110579005A CN 201910765795 A CN201910765795 A CN 201910765795A CN 110579005 A CN110579005 A CN 110579005A
- Authority
- CN
- China
- Prior art keywords
- heat pump
- source heat
- ground source
- air source
- time
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/10—Weather information or forecasts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/50—Load
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the field of ground source heat pumps, and discloses an air source coupling ground source heat pump system, a control method, a storage medium and a processor, wherein the method comprises the following steps: obtaining building information and running state information of the ground source heat pump unit in the whole year; calculating cold and hot load information of the ground source heat pump unit time by time in the whole year according to the building information and the operation state information; determining the running state of the air source heat pump according to the cold and hot load information of the ground source heat pump unit; and controlling the operation of the air source heat pump according to the operation state. The method sets the operation strategy of the air source heat pump according to the initial load of the ground source heat pump unit, the time for opening and closing the air source heat pump per year is basically consistent, the requirement on automatic control is low, the automatic control cost can be greatly reduced, the working efficiency of the air source heat pump is improved, and meanwhile the heat balance of the soil is maintained.
Description
Technical Field
The invention belongs to the technical field of ground source heat pumps, and particularly relates to an air source coupling ground source heat pump system, a control method, a storage medium and a processor.
Background
The ground source heat pump system is an air conditioning system which utilizes various water resources such as underground water, river and lake water, reservoir water, seawater, urban reclaimed water, industrial tail water, tunnel water and the like and soil sources as cold and heat sources of the ground source heat pump. Ground source heat pump systems have been widely used in buildings such as shopping malls and office buildings because of their renewable energy sources.
In summer hot and winter cold areas and cold areas, the heat taking amount and the heat release amount are different because the loads in winter and summer are not equal. For example, in hot summer and cold winter areas, the total cold load in summer is far greater than the total heat load in winter, so that the heat discharged into the soil by a summer system is far greater than the heat extracted from the soil in winter, the temperature of the soil is continuously increased over the long term, the heat balance of the soil is damaged, the unit efficiency is reduced, and the energy consumption is increased.
Disclosure of Invention
The invention aims to provide an air source coupling ground source heat pump system, a control method, a storage medium and a processor, which can maintain the heat balance of soil and avoid influencing the efficiency of a unit.
the technical scheme provided by the invention is as follows:
On one hand, a control method of an air source coupling ground source heat pump system is provided,
The system comprises a ground source heat pump unit and an air source heat pump, wherein the ground source heat pump unit comprises a ground source heat pump, a ground source well and an underground heat exchanger, a first valve is arranged on a pipeline connecting an outlet of the ground source heat pump and an inlet of the ground source well, a second valve is arranged on a pipeline connecting the outlet of the ground source heat pump and the inlet of the underground heat exchanger, and the air source heat pump is connected with the underground heat exchanger;
The control method comprises the following steps:
Obtaining building information and running state information of the ground source heat pump unit in the whole year;
calculating cold and hot load information of the ground source heat pump unit time by time in the whole year according to the building information and the operation state information;
Determining the running state of the air source heat pump according to the cold and hot load information of the ground source heat pump unit;
Controlling the operation of the air source heat pump according to the operation state;
When the air source heat pump is started, controlling the second valve to be opened, and closing the first valve;
when the air source heat pump is closed, the second valve is controlled to be closed, and the first valve is controlled to be opened.
Further preferably, the determining the operation state of the air source heat pump according to the cold and heat load information of the ground source heat pump unit specifically includes:
Calculating the heat taking quantity and the heat release quantity of the ground source heat pump unit time by time in the whole year according to the cold and heat load information of the ground source heat pump unit to obtain a time-by-time heat curve chart in the whole year;
and determining the running state of the air source heat pump according to the time-by-time heat curve graph.
further preferably, the determining the operating state of the air source heat pump according to the time-by-time heat quantity graph specifically includes:
acquiring a first interval and a second interval which are positioned in the negative axis direction and a third interval which is positioned in the positive axis direction in the time-by-time heat curve graph, wherein the negative axis direction represents the heat extraction amount, and the positive axis direction represents the heat release amount;
respectively calculating the total heat taking amount in the first interval and the second interval and the total heat release amount in the third interval;
when the total heat release quantity in the whole year is larger than the total heat extraction quantity, determining that the air source heat pump is in a refrigeration mode, determining the intersection point of the first interval and the third interval as a first time point, and determining the intersection point of the second interval and the third interval as a second time point;
Determining a third time point in the third interval, wherein the total heat output of the first interval and the second interval is equal to the total heat output from the third time point to the second time point;
determining the first time point as the starting time of the air source heat pump;
determining the third time point as the closing time of the air source heat pump.
further preferably, the calculation formula for calculating the heat taking amount and the heat release amount of the ground source heat pump unit one by one in the whole year according to the cold and heat load information of the ground source heat pump unit is as follows:
Q+＝[Qc×(1+1/EER)+Qg+Qr]；
Q-＝[Qh×(1-1/COP)+Ql-Qr]；
Wherein Q + is the heat release amount, Q-is the heat extraction amount, Qcfor cold load, Qhfor thermal load, QgFor heat gain during transport, Qlfor heat loss during transport, QrThe heat released by the water pump.
in another aspect, an air source coupled ground source heat pump system is further provided, including: the system comprises a ground source heat pump unit, an air source heat pump and a control device, wherein the ground source heat pump unit comprises a ground source heat pump, a ground source well and an underground heat exchanger, a first valve is arranged on a pipeline connecting an outlet of the ground source heat pump and an inlet of the ground source well, a second valve is arranged on a pipeline connecting the outlet of the ground source heat pump and the inlet of the underground heat exchanger, and the air source heat pump is connected with the underground heat exchanger;
the control device includes:
the acquisition module is used for acquiring building information and running state information of the ground source heat pump unit in the whole year;
the calculation module is used for calculating cold and hot load information of the ground source heat pump unit one by one in the whole year according to the building information and the operation state information;
the determining module is used for determining the running state of the air source heat pump according to the cold and hot load information of the ground source heat pump unit;
the control module is used for controlling the operation of the air source heat pump according to the operation state;
The control module is further used for controlling the second valve to be opened and the first valve to be closed when the air source heat pump is opened; when the air source heat pump is closed, the second valve is controlled to be closed, and the first valve is controlled to be opened.
Further preferably, the determining module includes:
The calculating unit is used for calculating the heat taking quantity and the heat release quantity of the ground source heat pump unit one by one in the whole year according to the cold and heat load information of the ground source heat pump unit to obtain a time-by-time heat curve graph in the whole year;
and the determining unit is used for determining the operating state of the air source heat pump according to the time-by-time heat curve graph.
further preferably, the determination unit includes:
The acquiring subunit is configured to acquire a first section and a second section in a negative axis direction and a third section in a positive axis direction in the time-by-time heat quantity graph, where the negative axis direction represents a heat quantity and the positive axis direction represents a heat release quantity;
the calculating subunit is used for calculating the total heat taking amount in the first interval and the second interval and the total heat release amount in the third interval respectively;
the determining subunit is used for determining that the air source heat pump is in a cooling mode when the total heat release quantity in the whole year is larger than the total heat taking quantity, and determining the intersection point of the first interval and the third interval as a first time point; determining an intersection point of the second interval and the third interval as a second time point;
The determining subunit is further configured to determine a third time point in the third interval, where a total heat output of the first interval and the second interval is equal to a total heat output from the third time point to the second time point;
the determining subunit is further configured to determine the first time point as an on time of the air source heat pump, and determine the third time point as an off time of the air source heat pump.
Further preferably, the calculation unit is configured to calculate the heat extraction amount and the heat release amount of the ground source heat pump unit one by one throughout the year according to the cold and heat load information of the ground source heat pump unit by using a calculation formula as follows:
Q+＝[Qc×(1+1/EER)+Qg+Qr]；
Q-＝[Qh×(1-1/COP)+Ql-Qr]；
Wherein Q + is the heat release amount, Q-is the heat extraction amount, QcFor cold load, Qhfor thermal load, QgFor heat gain during transport, QlFor heat loss during transport, Qrthe heat released by the water pump.
In still another aspect, a computer-readable storage medium is further provided, on which a computer program is stored, and the program is executed by a processor to implement the control method for the air source coupled ground source heat pump system.
In another aspect, a processor is provided for running a computer program, and when the processor executes the program, the processor implements the control method of the air source coupled ground source heat pump system.
Compared with the prior art, the air source coupling ground source heat pump system provided by the invention has the advantages that the air source heat pump is arranged in the ground source heat pump unit to replace a conventional cooling tower or a conventional boiler, so that on one hand, the water flow of an auxiliary hot side can be reduced, on the other hand, safety can be provided for a special area, and when the cold and heat loads of the ground source heat pump unit are unbalanced all the year round, the air source heat pump is timely started to assist the buried heat exchanger to dissipate or heat, so that the heat balance of soil is maintained, the operation efficiency of the ground source heat pump system is.
According to the control method of the air source coupling ground source heat pump system, the operation strategy of the air source heat pump is set according to the initial load of the ground source heat pump unit, after the climate of the area where the ground source heat pump unit is located is determined, the time for opening and closing the air source heat pump is basically consistent every year, the air source heat pump can be operated once a year, the operation is convenient and stable, the requirement on automatic control is low, the automatic control cost can be greatly reduced, the working efficiency of the air source heat pump is improved, and meanwhile the heat balance of the soil is maintained.
Drawings
The above features, technical features, advantages and implementations of an air source coupled ground source heat pump system, a control method, a storage medium and a processor will be further described in the following detailed description of preferred embodiments with reference to the accompanying drawings.
fig. 1 is a schematic flow chart illustrating a method for controlling an air source coupled ground source heat pump system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection between the air source heat pump and the ground source heat pump unit according to the present invention;
Fig. 3 is a time-by-time load graph of the whole year in an embodiment of the control method of the air source coupling ground source heat pump system according to the invention;
fig. 4 is a schematic flow chart illustrating a control method of an air source coupled ground source heat pump system according to another embodiment of the present invention;
FIG. 5 is a corresponding annual time-by-time heat profile of FIG. 3;
Fig. 6 is a schematic flow chart illustrating a control method of an air source coupled ground source heat pump system according to another embodiment of the present invention;
fig. 7 is a schematic block diagram of a control device of an embodiment of an air source coupled ground source heat pump system according to the present invention;
fig. 8 is a schematic block diagram illustrating a structure of another embodiment of an air source coupled ground source heat pump system according to the present invention.
description of the reference numerals
10. a ground source heat pump unit; 11. a ground source heat pump; 12. a source well; 13. a water pump; 14. an underground heat exchanger; 15. a first valve; 16. a second valve; 20. an air source heat pump; 30. a special area; 100. an acquisition module; 200. a calculation module; 300. a determination module; 310. a calculation unit; 320. a determination unit; 321. acquiring a subunit; 322. a calculation subunit; 323. determining a subunit; 400. and a control module.
Detailed Description
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
for the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
the invention provides an embodiment of a control method of an air source coupling ground source heat pump system, which comprises a ground source heat pump unit and an air source heat pump, wherein the ground source heat pump unit comprises a ground source heat pump, a ground source well and an underground heat exchanger; referring to fig. 1, the control method includes:
s100, acquiring building information and running state information of the ground source heat pump unit in the whole year;
s200, calculating cold and hot load information of the ground source heat pump unit one by one in the whole year according to the building information and the running state information;
s300, determining the running state of the air source heat pump according to the cold and hot load information of the ground source heat pump unit;
s400, controlling the operation of the air source heat pump according to the operation state;
S500, when the air source heat pump is started, controlling the second valve to be opened, and closing the first valve;
S600, when the air source heat pump is closed, controlling the second valve to be closed, and controlling the first valve to be opened.
specifically, referring to fig. 2, the ground source heat pump unit 10 includes a ground source heat pump 11, a ground source well 12, a water pump 13 and a buried heat exchanger 14, the ground source well 12 and the buried heat exchanger 14 are respectively connected to the ground source heat pump 11, a first valve 15 is disposed on a pipeline connecting an outlet of the ground source heat pump 11 and an inlet of the ground source well 12, a second valve 16 is disposed on a pipeline connecting an outlet of the ground source heat pump 11 and an inlet of the buried heat exchanger 14, the water pump 13 is disposed on a pipeline connecting an outlet of the ground source well 12 and an inlet of the ground source heat pump 11, the air source heat pump 20 is connected to the buried heat exchanger 14, and the air source heat pump 20 plays an auxiliary role in the ground source heat pump unit 10, such as auxiliary heat dissipation, so as to maintain the heat balance of the soil and avoid affecting the. In addition, the air source heat pump 20 of the present invention can also reserve a pipeline for some special areas 30 (areas that cannot stop air conditioning) on the user side, and when the ground source heat pump unit 10 fails and cannot work, the special areas 30 on the user side can be cooled or heated by the air source heat pump 20, so as to add insurance for the special areas 30 on the user side.
The operating strategy of the air source heat pump 20 is: the method comprises the steps of firstly obtaining building information and running state information of a ground source heat pump unit in the whole year, wherein the building information refers to information of people, doors, windows, walls and the like in an area needing to be cooled or heated by the ground source heat pump unit. The running state information is the running time and the running mode of the ground source heat pump unit in one year, and the running time and the running mode of the ground source heat pump unit are related to the climate of the place. For example, in hot summer and cold winter areas, if the ground source heat pump unit runs all the year round, the ground source heat pump unit is in a heating mode in 1 month to 3 months, in a cooling mode in 4 months to 10 months, and in a heating mode in 11 months to 12 months; certainly, the ground source heat pump unit is not operated all the year round in some places, and may be in a heating mode in 1 month to 3 months, not in operation in 4 months to 5 months, in a cooling mode in 6 months to 10 months, and in a heating mode in 11 months to 12 months. The running state information of the ground source heat pump unit in different areas is different, and in the actual working process, the running time and the running mode of the ground source heat pump unit need to be set according to the actual climate of the area, but the running state information of the same area every year is basically the same.
after the building information and the running state information of the ground source heat pump unit are obtained, the cold load and the heat load of the ground source heat pump unit can be calculated one by one all the year according to the building information and the running state information. Assuming that the ground source heat pump unit operates all the year round, the hourly load calculation is performed for 8760 hours all the year round for the ground source heat pump unit, and the annual hourly load curve diagram is obtained and is shown in fig. 3.
and finally, controlling the operation of the air source heat pump according to the operation mode and the on-off time of the air source heat pump.
For example, when the cold load of the whole year is larger than the heat load of the whole year, namely the total heat release in summer is larger than the heat taking amount in winter, the air source heat pump can be started in summer timely to control the second valve to be opened and the first valve to be closed; after the first valve is closed, the ground source heat pump unit does not use soil energy, and the air source heat pump maintains the return water temperature of the ground source heat pump unit so as to reduce the heat release to the soil in summer, further maintain the heat balance of the soil and avoid influencing the performance of the ground source heat pump unit.
Similarly, when the cold load of the whole year is smaller than the heat load of the whole year, namely the total heat release in summer is smaller than the total heat extraction in winter, the air source heat pump can be started in winter at proper time to reduce the heat extraction from the soil in winter so as to maintain the heat balance of the soil.
the control method of the invention sets the operation strategy of the air source heat pump according to the initial load of the ground source heat pump unit, after the climate of the area where the ground source heat pump unit is located is determined, the time for opening and closing the air source heat pump per year is basically consistent, the operation is performed once a year, the control method is not only convenient and stable, but also has lower requirements on automatic control, and can greatly reduce the automatic control cost.
In some embodiments of the present invention, as shown in fig. 4, the step S300 of determining the operation state of the air source heat pump according to the cold and heat load information of the ground source heat pump unit specifically includes:
s310, calculating heat taking quantity and heat release quantity of the ground source heat pump unit one by one in the whole year according to cold and heat load information of the ground source heat pump unit;
S320, determining the running state of the air source heat pump according to the time-by-time heat curve graph.
specifically, after the cold and heat load information of the ground source heat pump unit is obtained, the heat taking amount and the heat release amount of the ground source heat pump unit can be calculated one by one in the whole year according to the cold and heat load information. The calculation formula of the heat taking quantity and the heat release quantity of the ground source heat pump unit is as follows:
Q+＝[Qc×(1+1/EER)+Qg+Qr]；
Q-＝[Qh×(1-1/COP)+Ql-Qr]；
Wherein Q + is the heat release amount, Q-is the heat extraction amount, Qcfor cold load, QhFor thermal load, QgFor heat gain during transport, Qlfor heat loss during transport, Qrthe heat pump heat release amount is the EER, the ratio of the cooling amount to the effective input power when the air source heat pump operates in a cooling mode, and the COP is the ratio of the heating amount to the effective input power when the air source heat pump operates in a heating mode.
the annual time-by-time heat profile calculated according to the above formula is shown in fig. 5. After a time-by-time heat curve graph of the whole year is obtained, the operation mode and the start-stop time of the air source heat pump can be determined according to the time-by-time heat curve graph. For example, when the total heat extracted in the whole year is greater than the total heat released according to the time-by-time heat curve, the air source heat pump is started in winter to assist heating, so as to maintain the heat balance of the soil. When the total heat output in the whole year is calculated to be smaller than the total heat output, the air source heat pump is started in summer to assist in heat dissipation so as to maintain the heat balance of the soil.
in some embodiments of the present invention, as shown in fig. 6, the determining, according to the time-by-time heat quantity graph in step S320, an operation state of the air source heat pump specifically includes:
S321, acquiring a first interval and a second interval which are positioned in the negative axis direction and a third interval which is positioned in the positive axis direction in the time-by-time heat curve graph, wherein the negative axis direction represents heat taking amount, and the positive axis direction represents heat release amount;
S322, respectively calculating the total heat taking amount in the first interval and the second interval and the total heat release amount in the third interval;
s323 when the total heat release quantity in the whole year is larger than the total heat extraction quantity, determining that the air source heat pump is in a refrigeration mode, determining the intersection point of the first interval and the third interval as a first time point, and determining the intersection point of the second interval and the third interval as a second time point;
S324 determines a third time point in the third interval, wherein the total heat output of the first interval and the second interval is equal to the total heat output from the third time point to the second time point;
S325, determining the first time point as the starting time of the air source heat pump;
S326 determines the third time point as a turn-off time of the air source heat pump.
specifically, according to the climate characteristics of the four seasons of the year, the obtained time-by-time heat curve graph generally includes three regions, namely two heat taking regions and one heat releasing region, where the two heat taking regions are when the air temperature is relatively cold and the air temperature is relatively high and the cooling is required.
After a time-by-time heat curve graph is obtained through calculation according to the running state information of the ground source heat pump unit, a first interval and a second interval which are located in the negative y-axis direction and a third interval which is located in the positive y-axis direction in the time-by-time heat curve graph are obtained, in the time-by-time heat curve graph, the positive y-axis represents the heat release amount, and the negative y-axis represents the heat extraction amount.
as shown in fig. 5, assuming that the first section is 1 month-3 months, the second section is 11 months-12 months, and the third section is 4 months-10 months, then the total area S1 of the first section (the total heat release amount of the first section), the total area S2 of the second section (the total heat release amount of the second section), and the total area of the third section are calculated. And when the total area of the third interval is greater than S1+ S2, namely the total heat release quantity in the whole year is greater than the total heat taking quantity in the whole year (such as in summer hot and winter cold areas), determining that the air source heat pump is in a cooling mode. Then determining the intersection point of the first interval and the third interval as a first time point, and determining the intersection point of the second interval and the third interval as a second time point; and a third time point is determined in the third section so that the sum of the total heat release amount S1 of the first section and the total heat release amount S2 of the second section is equal to the total heat release amount S3 from the third time point to the second time point, i.e., S3 is equal to S1+ S2. The region from the first time point to the third time point is the heat which is unnecessarily discharged by the ground source heat pump unit in summer, so that the first time point is determined as the opening time of the air source heat pump, and the third time point is determined as the closing time of the air source heat pump. When the air source heat pump is opened, the first valve is closed, the second valve is opened, at the moment, the ground source heat pump does not use soil energy, the return water temperature of the ground source heat pump unit is maintained through the air source heat pump, the heat emission from the source heat pump unit to the soil is avoided, the situation that the ground source heat pump unit does not emit the heat to the soil in the time period from the first time point to the third time point can be further ensured, the heat emission quantity and the heat taking quantity to the soil in the whole year can be balanced, and the heat balance of the soil can be maintained.
Similarly, when the total area of the third interval is less than S1+ S2, that is, the total heat output during the whole year is less than the total heat output during the whole year (for example, in cold regions), the third time point can be found on the abscissa of the second interval, so that the sum of the total heat output from the second time point to the third time point and the total heat output from the first interval is equal to the total heat output of the third interval, at this time, the heat output to the soil and the heat output to the soil are balanced, when the ground source heat pump unit continues to operate, the air source heat pump needs to be started, so that the ground source heat pump does not use the soil energy, but uses the air source heat pump to maintain the return water temperature of the ground source heat pump unit, thereby maintaining the heat balance of the soil, and therefore, the third time point is the start time of the air source heat pump, and the end time point of the second interval is the stop time of the air source heat pump.
According to the scheme, the opening time and the closing time of the air source are determined according to the total heat release and the total heat extraction in the time-by-time heat curve graph, so that the determination mode is convenient and quick, and the frequent starting and stopping of the unit can be reduced; in addition, the air source heat pump is a closed water system, so that the corrosion phenomenon of equipment after long-time use can be avoided.
It should be understood that, in the foregoing embodiments, the sequence numbers of the steps do not mean the execution sequence, and the execution sequence of the steps should be determined by functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Corresponding to the foregoing embodiments of the control method of the air source coupled ground source heat pump system, the present invention further provides embodiments of the air source coupled ground source heat pump system.
an air source coupling ground source heat pump system comprises a ground source heat pump unit 10, an air source heat pump 20 and a control device, wherein the connection schematic diagram of the ground source heat pump unit 10 and the air source heat pump 20 is shown in fig. 2, the ground source heat pump unit 10 comprises a ground source heat pump 11, a ground source well 12, a water pump 13 and a buried heat exchanger 14, a first valve 15 is arranged on a pipeline connecting an outlet of the ground source heat pump 11 and an inlet of the ground source well 12, a second valve 16 is arranged on a pipeline connecting an outlet of the ground source heat pump 11 and an inlet of the buried heat exchanger 14, the water pump 13 is arranged on the pipeline connecting the ground source well 12 and the ground source heat pump 11, the air source heat pump 20 is connected with the buried heat exchanger 14, the air source heat pump 20 can reserve a pipeline for some special areas 30 (areas where air conditioners cannot be stopped) on a user side, when the ground source heat pump unit 10 fails to work, the special areas 30 on, to add insurance to the user side special area 30.
the air source heat pump 20 and the ground source heat pump unit 10 are respectively electrically connected with the control device; as shown in fig. 7, the control device includes:
The acquisition module 100 is configured to acquire building information and information of an operation state of the ground source heat pump unit 10 throughout the year;
a calculating module 200, configured to calculate cold and hot load information of the ground source heat pump unit 10 one by one throughout the year according to the building information and the operating state information;
a determining module 300, configured to determine an operating state of the air source heat pump 20 according to the cold and hot load information of the ground source heat pump unit 10;
A control module 400 for controlling the operation of the air source heat pump 20 according to the operating state;
The control module 400 is further configured to control the second valve to open and the first valve to close when the air source heat pump is opened; when the air source heat pump is closed, the second valve is controlled to be closed, and the first valve is controlled to be opened.
The specific manner in which each module in this embodiment performs operations has been described in detail in relation to the embodiment of the method, and will not be elaborated upon here.
Further, as shown in fig. 8, the determining module 300 includes:
the calculating unit 310 is configured to calculate heat extraction amount and heat release amount of the ground source heat pump unit 10 one by one throughout the year according to the cold and heat load information of the ground source heat pump unit 10, so as to obtain a time-by-time heat curve graph throughout the year;
A determining unit 320, configured to determine an operating state of the air-source heat pump 20 according to the time-by-time heat quantity graph.
further, the determining unit 320 includes:
An obtaining subunit 321, configured to obtain a first section and a second section located in a negative axis direction and a third section located in a positive axis direction in the time-by-time heat quantity graph, where the negative axis direction represents a heat quantity, and the positive axis direction represents a heat release quantity;
A calculating subunit 322, configured to calculate a total heat extraction amount in the first interval, the second interval, and a total heat release amount in the third interval, respectively;
a determining subunit 323, configured to determine that the air-source heat pump 20 is in the cooling mode when the total heat release amount is greater than the total heat extraction amount throughout the year, and determine an intersection point of the first interval and the third interval as a first time point; determining an intersection point of the second interval and the third interval as a second time point;
a determining subunit 323, further configured to determine a third time point in the third interval, where a total heat output of the first interval and the second interval is equal to a total heat output from the third time point to the second time point;
A determining subunit 323 for determining the first time point as the on-time of the air-source heat pump 20; the third point in time is determined as the off-time of the air-source heat pump 20.
Further, the calculating unit 310 is configured to calculate the heat extraction amount and the heat release amount of the ground source heat pump unit 10 one by one all year according to the cold and heat load information of the ground source heat pump unit 10, and includes:
Q+＝[Qc×(1+1/EER)+Qg+Qr]；
Q-＝[Qh×(1-1/COP)+Ql-Qr]；
wherein Q + is the heat release amount, Q-is the heat extraction amount, Qcfor cold load, Qhfor thermal load, QgFor heat gain during transport, QlFor heat loss during transport, Qrthe heat released by the water pump.
the specific manner in which each module in this embodiment performs operations has been described in detail in relation to the embodiment of the method, and will not be elaborated upon here.
The present invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the control method of the air source coupled ground source heat pump system.
all or part of the flow in the control method according to the above embodiments may be implemented by instructing related hardware through a computer program, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
the invention also provides a processor for running the computer program, and the processor realizes the control method of the air source coupling ground source heat pump system when executing the program. The processor may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like which is the control center for the computer device and which connects the various parts of the overall computer device using various interfaces and lines.
the memory may be used to store the computer programs and/or modules, and the processor may implement various functions of the computer device by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, video data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
it should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The control method of the air source coupling ground source heat pump system is characterized in that the system comprises a ground source heat pump unit and an air source heat pump, the ground source heat pump unit comprises a ground source heat pump, a ground source well and a buried heat exchanger, a first valve is arranged on a pipeline connecting an outlet of the ground source heat pump and an inlet of the ground source well, a second valve is arranged on a pipeline connecting the outlet of the ground source heat pump and the inlet of the buried heat exchanger, and the air source heat pump is connected with the buried heat exchanger;
the control method comprises the following steps:
obtaining building information and running state information of the ground source heat pump unit in the whole year;
Calculating cold and hot load information of the ground source heat pump unit time by time in the whole year according to the building information and the operation state information;
Determining the running state of the air source heat pump according to the cold and hot load information of the ground source heat pump unit;
controlling the operation of the air source heat pump according to the operation state;
When the air source heat pump is started, controlling the second valve to be opened, and closing the first valve;
When the air source heat pump is closed, the second valve is controlled to be closed, and the first valve is controlled to be opened.
2. the method as claimed in claim 1, wherein the determining the operating state of the air source heat pump according to the information of the cooling and heating loads of the ground source heat pump unit specifically comprises:
Calculating the heat taking quantity and the heat release quantity of the ground source heat pump unit time by time in the whole year according to the cold and heat load information of the ground source heat pump unit to obtain a time-by-time heat curve chart in the whole year;
And determining the running state of the air source heat pump according to the time-by-time heat curve graph.
3. the method as claimed in claim 2, wherein the determining the operating state of the air source heat pump according to the time-by-time heat curve specifically includes:
Acquiring a first interval and a second interval which are positioned in the negative axis direction and a third interval which is positioned in the positive axis direction in the time-by-time heat curve graph, wherein the negative axis direction represents the heat extraction amount, and the positive axis direction represents the heat release amount;
Respectively calculating the total heat taking amount in the first interval and the second interval and the total heat release amount in the third interval;
when the total heat release quantity in the whole year is larger than the total heat extraction quantity, determining that the air source heat pump is in a refrigeration mode, determining the intersection point of the first interval and the third interval as a first time point, and determining the intersection point of the second interval and the third interval as a second time point;
determining a third time point in the third interval, wherein the total heat output of the first interval and the second interval is equal to the total heat output from the third time point to the second time point;
determining the first time point as the starting time of the air source heat pump;
Determining the third time point as the closing time of the air source heat pump.
4. the method as claimed in claim 2, wherein the calculation formula for calculating the heat extraction amount and the heat release amount of the ground source heat pump unit one by one throughout the year according to the information of the heat load of the ground source heat pump unit is as follows:
Q+＝[Qc×(1+1/EER)+Qg+Qr]；
Q-＝[Qh×(1-1/COP)+Ql-Qr]；
Wherein Q + is the heat release amount, Q-is the heat extraction amount, QcFor cold load, Qhfor thermal load, QgFor heat gain during transport, Qlfor heat loss during transport, Qrthe heat released by the water pump.
5. An air source coupling ground source heat pump system, characterized by, includes: the system comprises a ground source heat pump unit, an air source heat pump and a control device, wherein the ground source heat pump unit comprises a ground source heat pump, a ground source well and an underground heat exchanger, a first valve is arranged on a pipeline connecting an outlet of the ground source heat pump and an inlet of the ground source well, a second valve is arranged on a pipeline connecting the outlet of the ground source heat pump and the inlet of the underground heat exchanger, and the air source heat pump is connected with the underground heat exchanger;
the control device includes:
The acquisition module is used for acquiring building information and running state information of the ground source heat pump unit in the whole year;
the calculation module is used for calculating cold and hot load information of the ground source heat pump unit one by one in the whole year according to the building information and the operation state information;
The determining module is used for determining the running state of the air source heat pump according to the cold and hot load information of the ground source heat pump unit;
the control module is used for controlling the operation of the air source heat pump according to the operation state;
The control module is further used for controlling the second valve to be opened and the first valve to be closed when the air source heat pump is opened; when the air source heat pump is closed, the second valve is controlled to be closed, and the first valve is controlled to be opened.
6. the air source coupling ground source heat pump system of claim 5, wherein the determining module comprises:
The calculating unit is used for calculating the heat taking quantity and the heat release quantity of the ground source heat pump unit one by one in the whole year according to the cold and heat load information of the ground source heat pump unit to obtain a time-by-time heat curve graph in the whole year;
and the determining unit is used for determining the operating state of the air source heat pump according to the time-by-time heat curve graph.
7. the air source coupling ground source heat pump system of claim 6, wherein the determining unit comprises:
The acquiring subunit is configured to acquire a first section and a second section in a negative axis direction and a third section in a positive axis direction in the time-by-time heat quantity graph, where the negative axis direction represents a heat quantity and the positive axis direction represents a heat release quantity;
The calculating subunit is used for calculating the total heat taking amount in the first interval and the second interval and the total heat release amount in the third interval respectively;
The determining subunit is used for determining that the air source heat pump is in a cooling mode when the total heat release quantity in the whole year is larger than the total heat taking quantity, and determining the intersection point of the first interval and the third interval as a first time point; determining an intersection point of the second interval and the third interval as a second time point;
The determining subunit is further configured to determine a third time point in the third interval, where a total heat output of the first interval and the second interval is equal to a total heat output from the third time point to the second time point;
the determining subunit is further configured to determine the first time point as an on time of the air source heat pump, and determine the third time point as an off time of the air source heat pump.
8. The air source coupling ground source heat pump system of claim 6,
The calculation unit is used for calculating the heat taking quantity and the heat release quantity of the ground source heat pump unit one by one in the whole year according to the cold and heat load information of the ground source heat pump unit, and the calculation formula is as follows:
Q+＝[Qc×(1+1/EER)+Qg+Qr]；
Q-＝[Qh×(1-1/COP)+Ql-Qr]；
Wherein Q + is the heat release amount, Q-is the heat extraction amount, Qcfor cold load, QhFor thermal load, QgFor heat gain during transport, Qlfor heat loss during transport, QrThe heat released by the water pump.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1-4.
10. A processor for running a computer program, characterized in that the processor implements the method of any of claims 1-4 when executing the program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765795.8A CN110579005B (en) | 2019-08-19 | 2019-08-19 | Air source coupling ground source heat pump system, control method, storage medium and processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765795.8A CN110579005B (en) | 2019-08-19 | 2019-08-19 | Air source coupling ground source heat pump system, control method, storage medium and processor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110579005A true CN110579005A (en) | 2019-12-17 |
| CN110579005B CN110579005B (en) | 2021-06-15 |
Family
ID=68811307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910765795.8A Active CN110579005B (en) | 2019-08-19 | 2019-08-19 | Air source coupling ground source heat pump system, control method, storage medium and processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110579005B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111222230A (en) * | 2019-12-30 | 2020-06-02 | 国网北京市电力公司 | Modeling processing method and device for heat pump type electric heating equipment |
| CN113446681A (en) * | 2021-06-07 | 2021-09-28 | 江苏大学 | Ground source heat pump composite system for buildings in cold regions and control method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155829A (en) * | 2011-03-29 | 2011-08-17 | 浙江建设职业技术学院 | Adaptive heat balance control system of ground source heat pump |
| CN203274086U (en) * | 2013-04-25 | 2013-11-06 | 上海理工大学 | Ground source and air source coupled heat pump system with heat recovery function |
| CN203595175U (en) * | 2013-12-16 | 2014-05-14 | 王怡岷 | Ground source heat pump system with temperature compensation function |
| CN205037401U (en) * | 2015-09-30 | 2016-02-17 | 河北省建筑科学研究院 | Pipe laying ground source heat pump system of subregion concurrent heating with striding heat accumulation in season |
| CN205860556U (en) * | 2016-07-13 | 2017-01-04 | 昆山台佳机电有限公司 | Thermal balance earth-source hot-pump system |
| CN106500398A (en) * | 2015-09-08 | 2017-03-15 | 吴伟佳 | A kind of ground source answering system and method |
| CN207050136U (en) * | 2017-10-27 | 2018-02-27 | 中国煤炭地质总局水文地质局 | A kind of soil source heat pump and air-cooled heat pump heat pump system |
| CN108458423A (en) * | 2018-03-22 | 2018-08-28 | 西安交通大学 | A kind of combined heat-pump all fresh air air-conditioning system based on shallow-layer seepage flow |
| CN208186676U (en) * | 2018-03-23 | 2018-12-04 | 浙江陆特能源科技股份有限公司 | Air-cooled heat pump and mid-deep strata bushing type earth source heat pump combined air-conditioning system |
| CN208349626U (en) * | 2018-04-04 | 2019-01-08 | 天津市布加迪环保科技发展有限公司 | Thermal balance ground source system |
| US20190162451A1 (en) * | 2017-11-30 | 2019-05-30 | Albert Reid Wallace | Thermal And Moisture Enhanced Gradient Strata For Heat Exchangers |
-
2019
- 2019-08-19 CN CN201910765795.8A patent/CN110579005B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155829A (en) * | 2011-03-29 | 2011-08-17 | 浙江建设职业技术学院 | Adaptive heat balance control system of ground source heat pump |
| CN203274086U (en) * | 2013-04-25 | 2013-11-06 | 上海理工大学 | Ground source and air source coupled heat pump system with heat recovery function |
| CN203595175U (en) * | 2013-12-16 | 2014-05-14 | 王怡岷 | Ground source heat pump system with temperature compensation function |
| CN106500398A (en) * | 2015-09-08 | 2017-03-15 | 吴伟佳 | A kind of ground source answering system and method |
| CN205037401U (en) * | 2015-09-30 | 2016-02-17 | 河北省建筑科学研究院 | Pipe laying ground source heat pump system of subregion concurrent heating with striding heat accumulation in season |
| CN205860556U (en) * | 2016-07-13 | 2017-01-04 | 昆山台佳机电有限公司 | Thermal balance earth-source hot-pump system |
| CN207050136U (en) * | 2017-10-27 | 2018-02-27 | 中国煤炭地质总局水文地质局 | A kind of soil source heat pump and air-cooled heat pump heat pump system |
| US20190162451A1 (en) * | 2017-11-30 | 2019-05-30 | Albert Reid Wallace | Thermal And Moisture Enhanced Gradient Strata For Heat Exchangers |
| CN108458423A (en) * | 2018-03-22 | 2018-08-28 | 西安交通大学 | A kind of combined heat-pump all fresh air air-conditioning system based on shallow-layer seepage flow |
| CN208186676U (en) * | 2018-03-23 | 2018-12-04 | 浙江陆特能源科技股份有限公司 | Air-cooled heat pump and mid-deep strata bushing type earth source heat pump combined air-conditioning system |
| CN208349626U (en) * | 2018-04-04 | 2019-01-08 | 天津市布加迪环保科技发展有限公司 | Thermal balance ground source system |
Non-Patent Citations (1)
| Title |
|---|
| 穆康: "土壤源热泵冬夏取排热量不平衡的大气热补偿方法", 《中国硕士学位论文全文数据库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111222230A (en) * | 2019-12-30 | 2020-06-02 | 国网北京市电力公司 | Modeling processing method and device for heat pump type electric heating equipment |
| CN113446681A (en) * | 2021-06-07 | 2021-09-28 | 江苏大学 | Ground source heat pump composite system for buildings in cold regions and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110579005B (en) | 2021-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110579005B (en) | Air source coupling ground source heat pump system, control method, storage medium and processor | |
| Ozgener et al. | Exergoeconomic analysis of a solar assisted ground-source heat pump greenhouse heating system | |
| CN110094802B (en) | Heat pump and heat accumulating type electric boiler combined heating load distribution method and device | |
| EP2671029B1 (en) | Heating system and method for heating a building and/or for preparing hot water | |
| EP3483512A1 (en) | Heating control method and device, and combined heating system | |
| US9989270B2 (en) | Reducing peak electrical demand by air conditioning systems and reducing water consumption by implementing an integrated thermal energy and rainwater storage system | |
| Reddick et al. | Waste heat and renewable energy integration in buildings | |
| US10962250B2 (en) | Smart desert geothermal heat pump for air conditioning and domestic water cooling | |
| CN113887079A (en) | Air source heat pump control method and system considering uncertainty of new energy power generation | |
| CN103256670A (en) | Ground source heat pump combined air conditioning system | |
| CN110567116B (en) | Defrosting control method and system for air treatment unit, storage medium and processor | |
| CN110984282B (en) | Excavator control method based on maximum available torque of engine | |
| CN203147942U (en) | Ground source heat pump hybrid air conditioning system | |
| CN102042647A (en) | Cold supply energy-saving integrated system | |
| CN202188789U (en) | Energy storage water drawing-withdrawing system for sewage source and sewage source heat pump system with same | |
| CN213841144U (en) | Multifunctional central air-conditioning system of soil source heat pump | |
| CN212132657U (en) | Combined heating system for different heating temperature requirements in alpine regions | |
| CN112361472A (en) | Multifunctional central air conditioning system of ground source heat pump and control method thereof | |
| CN117073243B (en) | Solar-based geothermal energy thermal compensation method, system, terminal and storage medium | |
| CN103017563A (en) | Circulating water running system and running method thereof | |
| CN117190541A (en) | Seasonal geothermal energy thermal compensation method, system, terminal and storage medium | |
| CN211120112U (en) | Novel combined type heat pump system: horizontal and vertical mixed buried pipe heat pump system | |
| DE102013106603A1 (en) | Method and arrangement for heat and power generation | |
| CN112787355B (en) | Energy coupling system and control method and device thereof | |
| US20240151411A1 (en) | Thermal Liquid Battery |
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 |