Agricultural greenhouse low-carbon energy supply system combining photovoltaic waste heat and air source heat pump

Abstract

The utility model relates to the technical field of modern agricultural energy supply, in particular to an agricultural greenhouse low-carbon energy supply system combining photovoltaic waste heat and an air source heat pump, which comprises a photovoltaic cell panel group, the air source heat pump, a heat storage pool, an agricultural greenhouse and an air preheating system mounted at an inlet of the air source heat pump. The agricultural greenhouse is connected with the heat storage pool and the photovoltaic cell panel set through the air source heat pump and the air preheating system in sequence, and a heating heat source of the air preheating system comes from waste heat on the back side of a photovoltaic panel. Photovoltaic power is used for driving the air source heat pump, photovoltaic waste heat can improve the energy efficiency coefficient of the air source heat pump, therefore, low-carbon energy supply of the agricultural greenhouse can be achieved, the photo-thermal conversion efficiency of the photovoltaic panel can be further improved, the service life of the photovoltaic panel is prolonged, meanwhile, redundant heat in summer can be stored in the heat storage pool, and energy is saved. And energy conservation and environmental protection are achieved, and benefits are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to modern agricultural energy supply technical field especially relates to the agricultural greenhouse low carbon energy supply system of photovoltaic waste heat and air source heat pump combination. BACKGROUND

[0002] At present, agricultural greenhouse has various purposes, including livestock and poultry breeding, fruit and vegetable cultivation etc., and the temperature in the greenhouse needs to be controlled, including temperature rise and fall. In addition to using solar energy to control the internal temperature of the agricultural greenhouse, additional temperature rise and fall are also needed to meet different purposes in different periods. At present, mainly, electric energy is used, and electrically driven heat pump or refrigerating machine is used to supply cold to reduce the temperature in the greenhouse. Electrically driven heater is used to heat the greenhouse to increase the temperature in the greenhouse.

[0003] Generally, photovoltaic electricity can be used in combination with air source heat pump to complete the above energy supply task. However, in extremely cold weather, the air source heat pump has difficulty in starting due to extremely low inlet air temperature, and the energy efficiency ratio and energy efficiency are reduced. Photovoltaic cell panel groups are installed in the agricultural greenhouse base to generate photovoltaic electric energy. While the photovoltaic panel absorbs solar energy to generate photovoltaic electricity, a part of the energy is converted into heat energy, which is gathered at the back of the lower part of the photovoltaic panel, causing the temperature of the back of the photovoltaic panel to rise. Long-term high-temperature photovoltaic panel will affect the photovoltaic conversion efficiency and affect the service life of the photovoltaic panel. Therefore, the present application proposes the agricultural greenhouse low carbon energy supply system of photovoltaic waste heat and air source heat pump combination. SUMMARY

[0004] The utility model aims at the problem of how to ensure that the target body can be uniformly heated and the target can move smoothly in the background art, and proposes the agricultural greenhouse low carbon energy supply system of photovoltaic waste heat and air source heat pump combination.

[0005] The technical scheme of the utility model is as follows: the agricultural greenhouse low carbon energy supply system of photovoltaic waste heat and air source heat pump combination, including photovoltaic cell panel group, air source heat pump, heat storage pool and agricultural greenhouse, further including air preheating system installed at the inlet position of the air source heat pump, the agricultural greenhouse is connected with the heat storage pool and the photovoltaic cell panel group through the air source heat pump and the air preheating system in turn, and the heating heat source of the air preheating system comes from the backside waste heat of the photovoltaic panel.

[0006] Optionally, the air preheating system includes air blower, air heater, air conveying system, air conditioner, air temperature measuring device, and the air blower, air conveying system, air conditioner and air temperature measuring device are installed on one side of the photovoltaic cell panel group in turn.

[0007] Optionally, the photovoltaic cell panel group includes photovoltaic panel back, and the air heating unit is installed on the photovoltaic panel back.

[0008] Optionally, the air heating unit is internally provided with an air flow interlayer, which is connected with the air blower and the air conveying system, and conveys the heat source to the inlet of the air source heat pump.

[0009] Optionally, the air flow interlayer is internally provided with a plurality of S-shaped guide vanes, which extend in the S shape from the air inlet to the air outlet of the air flow interlayer, and form a plurality of S-shaped flow channels.

[0010] Optionally, the system further comprises an ambient temperature measuring point, an air source heat pump inlet air temperature measuring point, and a photovoltaic panel back wall temperature measuring point, wherein the air source heat pump inlet air temperature measuring point is arranged at the air inlet of the air source heat pump, and the photovoltaic panel back wall temperature measuring point is arranged on the back of the photovoltaic panel.

[0011] Optionally, the system further comprises a controller, which is electrically connected with the ambient temperature measuring point, the air source heat pump inlet air temperature measuring point, the photovoltaic panel back wall temperature measuring point, the air blower, and the air conditioner, respectively, and adjusts the air volume of the air blower according to the wall temperature of the back of the photovoltaic panel.

[0012] Optionally, the heat storage pool is used for storing the heat of the back of the photovoltaic panel, and is used for cross-season use.

[0013] Compared with the prior art, the application has at least one of the following beneficial technical effects:

[0014] The low-carbon energy supply system of the agricultural greenhouse combined with the photovoltaic waste heat and the air source heat pump can drive the air source heat pump by using photovoltaic electricity, and the photovoltaic waste heat can improve the energy efficiency coefficient of the air source heat pump, so that the low-carbon energy supply of the agricultural greenhouse can be realized, the light-heat conversion efficiency of the photovoltaic panel can be further improved, the service life of the photovoltaic panel can be prolonged, and the surplus heat in summer can be stored in the heat storage pool for cross-season use, thereby saving energy and protecting the environment and improving the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A schematic diagram of the low-carbon energy supply system of the agricultural greenhouse combined with the photovoltaic waste heat and the air source heat pump is given.

[0016] Figure 2 An S-shaped flow channel in the air interlayer of the air heating unit.

[0017] Mark No. 1, photovoltaic panel group; 2, air source heat pump; 3, air preheating system; 4, heat storage pool; 5, air blower; 6, air heater; 7, air conveying system; 8, air conditioner; 9, air temperature measuring device; 10, air heating unit; 11, air flow interlayer; 12, S-shaped guide vane; 13, S-shaped flow channel; 14, ambient temperature measuring point; 15, air source heat pump inlet air temperature measuring point; 16, photovoltaic panel back wall temperature measuring point; 17, controller; 18, agricultural greenhouse; 19, photovoltaic panel back. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments.

[0019] The components of the embodiments of the present application generally described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0020] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0023] In the description of the utility model, it is to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model.

[0024] Embodiment

[0025] Please refer to Figure 1 、 Figure 2 As shown in the utility model discloses a photovoltaic waste heat and air source heat pump combined agricultural greenhouse low carbon energy supply system, including photovoltaic cell panel group 1, air source heat pump 2, heat storage pool 4 and agricultural greenhouse 18, still include the air preheating system 3 of installation in the air source heat pump 2 import position, air preheating system 3 includes air blower 5, air heater 6, air conveying system 7, air conditioner 8, air temperature measuring device 9, wherein air blower 5, air conveying system 7, air conditioner 8, air temperature measuring device 9 are installed in the side of photovoltaic cell panel group 1 in proper order, air blower 5 is sent to photovoltaic cell panel group 1 after air pressurization through air conveying system 7, air conditioner 8, air temperature measuring device 9, air heater 6 carries out auxiliary heating to photovoltaic cell panel group 1, and photovoltaic cell panel group 1 is used for further adjusting the air intake of air.

[0026] In the embodiment, agricultural greenhouse 18 is sequentially connected with heat storage pool 4 and photovoltaic cell panel group 1 through air source heat pump 2 and air preheating system 3, and the heating source of air preheating system 3 comes from the backside waste heat of photovoltaic panel. Photovoltaic cell panel group 1 comprises a photovoltaic panel back portion 19, an air heating unit 10 is installed on the photovoltaic panel back portion 19, an air flow interlayer 11 is arranged in the air heating unit 10, the air flow interlayer 11 is connected with air blower 5 and air conveying system 7, and the heat source is conveyed to the inlet of air source heat pump 2, a plurality of S-shaped flow guide plates 12 are arranged in the air flow interlayer 11, the S-shaped flow guide plates 12 extend from the air inlet to the air outlet of the air flow interlayer 11 in an S shape, and form a plurality of S-shaped flow channels 13. Photovoltaic cell panel group 1 generates electric energy to drive air source heat pump 2 to work, and provides heating or cooling for agricultural greenhouse 18.

[0027] The system is in normal operation, the air blower 5 sends air to the back of the photovoltaic cell panel group 1, i.e. the air heating unit 10 on the back 19 of the photovoltaic panel, the air flows in the S-shaped flow channel 13 in the air flow interlayer 11, the heat exchange coefficient is improved, the waste heat of the back of the photovoltaic cell panel group 1 is absorbed, the air temperature is increased, the air flows out of the air heating unit 10 and enters the air inlet of the air source heat pump 2, the inlet temperature of the air source heat pump 2 is increased, and the energy efficiency coefficient of the air source heat pump 2 is increased. When used in summer, the air flows out of the air heating unit 10 and enters the heat storage pool 4, and the heat is stored for cross-season use.

[0028] Further, the system further comprises an ambient temperature measuring point 14, an air source heat pump inlet air temperature measuring point 15, a photovoltaic panel back wall temperature measuring point 16 and a controller 17, the controller 17 is electrically connected with the ambient temperature measuring point 14 for measuring the ambient temperature of the system periphery, the air source heat pump inlet air temperature measuring point 15 for measuring the air source heat pump 2 inlet air temperature, the photovoltaic panel back wall temperature measuring point 16, the air blower 5 and the air conditioner 8, the air source heat pump inlet air temperature measuring point 15 is arranged at the air inlet end of the air source heat pump 2, and the photovoltaic panel back wall temperature measuring point 16 is arranged on the back 19 of the photovoltaic panel, and the air volume of the air blower 5 is adjusted according to the wall temperature of the back 19 of the photovoltaic panel. The controller 17 adjusts the air volume of the air blower 5 according to the wall temperature of the back 19 of the photovoltaic panel. When the wall temperature rises, the controller 17 increases the air volume of the air blower 5 to control the temperature of the back 19 of the photovoltaic panel. When the ambient temperature decreases, the controller 17 reduces the air volume of the air blower 5, so that the inlet air temperature of the air source heat pump 2 is at a high level.

[0029] The low-carbon energy supply system of the agricultural greenhouse combined with photovoltaic waste heat and an air source heat pump of the utility model, photovoltaic electricity is used for driving the air source heat pump 2, and the photovoltaic waste heat can improve the energy efficiency coefficient of the air source heat pump 2, so that the low-carbon energy supply of the agricultural greenhouse 18 can be realized, the light-heat conversion efficiency of the photovoltaic cell panel group 1 can be further improved, and the service life of the photovoltaic panel is prolonged. Moreover, the excess heat in summer can be stored in the heat storage pool 4 for cross-season use, energy saving and environmental protection are realized, and the benefits are improved.

[0030] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A low-carbon energy supply system for agricultural greenhouse combining photovoltaic waste heat and air source heat pump, comprising photovoltaic cell panel group (1), air source heat pump (2), heat storage pool (4) and agricultural greenhouse (18), characterized in that, It also includes an air preheating system (3) installed at the inlet position of the air source heat pump (2), the agricultural greenhouse (18) is connected with the heat storage pool (4) and the photovoltaic panel group (1) through the air source heat pump (2) and the air preheating system (3) in turn, and the heating heat source of the air preheating system (3) comes from the back heat of the photovoltaic panel.

2. The low-carbon energy supply system of the photovoltaic-heat recovery and air source heat pump combined agricultural greenhouse according to claim 1, characterized in that, The air preheating system (3) comprises an air blower (5), an air heater (6), an air conveying system (7), an air conditioner (8) and an air temperature measuring device (9), and the air blower (5), the air conveying system (7), the air conditioner (8) and the air temperature measuring device (9) are installed on one side of the photovoltaic panel group (1) in turn.

3. The low-carbon energy supply system of the photovoltaic-heat recovery and air source heat pump combined agricultural greenhouse according to claim 2, characterized in that, The photovoltaic panel group (1) comprises a photovoltaic panel back (19), and the air heating unit (10) is installed on the photovoltaic panel back (19).

4. The low-carbon energy supply system of the photovoltaic-heat recovery and air source heat pump combined agricultural greenhouse according to claim 3, characterized in that, The air heating unit (10) is internally provided with an air flow interlayer (11), the air flow interlayer (11) is connected with the air blower (5) and the air conveying system (7), and the heat source is conveyed to the inlet of the air source heat pump (2).

5. The low-carbon energy supply system of the photovoltaic-heat recovery and air source heat pump combined agricultural greenhouse according to claim 4, characterized in that, The air flow interlayer (11) is internally provided with a plurality of S-shaped guide vanes (12), the S-shaped guide vanes (12) extend in the direction from the air inlet to the air outlet of the air flow interlayer (11) and form a plurality of S-shaped flow channels (13). 6.The photovoltaic and air source heat pump combined agricultural greenhouse low-carbon energy supply system according to claim 5, characterized in that, It also includes an ambient temperature measuring point (14), an air source heat pump inlet air temperature measuring point (15) and a photovoltaic panel back wall temperature measuring point (16), the air source heat pump inlet air temperature measuring point (15) is arranged at the air inlet end of the air source heat pump (2), and the photovoltaic panel back wall temperature measuring point (16) is arranged on the photovoltaic panel back (19).

7. The low-carbon energy supply system of the photovoltaic-heat recovery and air source heat pump combined agricultural greenhouse according to claim 6, characterized in that, It also includes a controller (17), the controller (17) is electrically connected with the ambient temperature measuring point, the air source heat pump inlet air temperature measuring point, the photovoltaic panel back wall temperature measuring point, the air blower (5) and the air conditioner (8), respectively, and the air volume of the air blower (5) is adjusted according to the wall temperature of the photovoltaic panel back (19). 8.The photovoltaic and air source heat pump combined agricultural greenhouse low-carbon energy supply system according to claim 7, characterized in that, The heat storage pool is used for storing the heat of the photovoltaic panel back (19) and is used for cross-season use.

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