PV / T combined cooling heating and power system

Abstract

The utility model discloses a PV / T combined cooling heating and power system, which relates to the technical field of solar energy utilization, and aims to solve the problem that the existing PVT combined cooling heating and power system cannot be well used when being used. A refrigerant outlet of a PV / T assembly is sequentially connected with a compressor, a water tank I and a throttle valve through a pipeline via a valve V; the valve I is connected with a refrigerant inlet of the PV / T assembly; a refrigerant outlet of the throttle valve is connected with a refrigerant inlet of the outdoor fan; a refrigerant outlet pipeline of the outdoor fan is connected with an inlet of the compressor through a valve VI; a water outlet in one side above the first water tank is connected with a water inlet in the lower side of the first water tank through a first water pump, a second water tank and a fourth valve in sequence; a water outlet in the other side above the first water tank is connected with a water outlet in the lower side of the first water tank through a second water pump, a third water tank and a third valve in sequence; a water outlet in the lower side of the water tank is connected with a water inlet in the lower side of the water tank through a second valve, a third water pump and an absorption refrigerating unit.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of solar energy utilization, especially to a PV / T cold heat and power cogeneration system. BACKGROUND

[0002] PVT is combined together with photovoltaic and photo-thermal, and can realize higher solar energy utilization rate, that is, on the basis of photovoltaic power generation, waste heat recovery is carried out, solar heat and power cogeneration is realized, the temperature of the photovoltaic panel can be reduced, and the power generation efficiency is improved, and the use prospect is very wide.

[0003] Through retrieval, the authorized announcement No. CN114440474B discloses a cold heat and power cogeneration system and operation method based on a PVT component, the cold heat and power cogeneration system based on the PVT component includes a liquid working medium PVT heat collection system and a direct expansion PVT heat pump heating and cooling system, and the liquid working medium PVT heat collection system and the direct expansion PVT heat pump heating and cooling system are connected with each other; the liquid working medium PVT heat collection system includes an air compression module, a vacuum pumping module and a liquid working medium heat collection module; the air compression module and the vacuum pumping module are connected with the liquid working medium heat collection module; the direct expansion PVT heat pump heating and cooling system includes a solar module, an air source module and a circulation control module; the solar module and the air source module are connected with the circulation control module. The beneficial effects of the present application are that the direct expansion PVT heat pump heating and cooling system and the liquid working medium PVT heat collection system are combined, the power consumption is reduced, and the power generation efficiency is improved.

[0004] However, the existing PVT cannot well collect cold heat and power cogeneration when in use, thereby leading to energy waste, and therefore there is an urgent need for a PV / T cold heat and power cogeneration system to solve these problems in the market. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a PV / T cold heat and power cogeneration system to solve the problem that the existing PVT cannot well collect cold heat and power cogeneration when in use, thereby leading to energy waste in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A PV / T cold heat and power cogeneration system, comprising a PV / T component, a valve one, an outdoor fan, a compressor, a throttling valve, a water tank one, a water pump one, a water tank two, a water pump two, a valve two, a water pump three, an absorption refrigerating unit, a water pump four, a valve three, a valve four, a water tank three, an indoor four-tube fan coil, a valve five, a valve six, an electricity storage device, a valve seven, a valve eight and a valve nine.

[0008] The PV / T assembly refrigerant outlet is connected with the compressor, the water tank one, the throttling valve and the valve five in sequence through pipelines, and the valve one is connected with the PV / T assembly refrigerant inlet;

[0009] The throttling valve refrigerant outlet is connected with the outdoor fan refrigerant inlet;

[0010] The outdoor fan refrigerant outlet pipeline is connected with the compressor inlet through the valve six;

[0011] The water tank one upper side water outlet is connected with the water tank one lower side water inlet through the water pump one, the water tank two, the valve four and pipelines in sequence;

[0012] The water tank one upper side water outlet is connected with the water tank one lower side water inlet through the water pump two, the water tank three, the valve three and pipelines in sequence;

[0013] The water tank one lower side water outlet is connected with the water tank one lower side water inlet through the valve two, the water pump three and the absorption refrigerating unit in sequence.

[0014] Preferably, the absorption refrigerating unit is a lithium bromide absorption refrigerating machine, and the compressor is a variable frequency compressor.

[0015] Preferably, the internal pipelines of the water tank one, the water tank two and the water tank three are double-pipe heat exchangers.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] (1) The present application absorbs solar energy through the PV / T assembly, converts part of the solar energy into electric energy, and sends the electric energy to the user end through the power storage device;

[0018] (2) When the present application is used in the daytime with solar radiation, the PV / T assembly absorbs solar energy, converts part of the solar energy into heat energy, the low-temperature and low-pressure refrigerant absorbs the heat energy and is converted into gaseous state, the valve five is opened, the valve six is closed, the gaseous refrigerant is compressed through the compressor, is converted into high-temperature and high-pressure refrigerant, is cooled through the water tank one, the water temperature in the water tank one is increased, the refrigerant is converted from high-temperature and high-pressure state into high-temperature and low-pressure state, is converted from high-temperature and low-pressure state into low-temperature and low-pressure state through the throttling valve, at this time, the valve one is opened, and the low-temperature and low-pressure state refrigerant enters the PV / T assembly, so that the PV / T assembly realizes cooling and heating.

[0019] (3)The utility model discloses when the water tank one inside temperature reaches 75 DEG C or more, opens valve door two, valve door seven, valve door three, valve door four, valve door eight and valve door nine are in the closed state, starts water pump three, high temperature hot water enters absorption refrigerating machine unit, and absorption refrigerating machine unit freezes water temperature and reaches 7 DEG C, enters indoor four -pipe fan -coil, and indoor reaches the refrigeration purpose demand, when the daytime has no solar radiation or night, closes valve door one, valve door five, opens valve door six, starts outdoor fan, low temperature low pressure refrigerant absorbs air heat energy at this moment, turns into gaseous state, thereby can better utilize resources.

[0020] (4)The utility model discloses when the water tank one inside temperature reaches 75 DEG C or more, starts water pump one, opens valve door four, valve door two and valve door seven are in the closed state, and high temperature hot water exchanges heat with the water in water tank two, and the water temperature in water tank two is raised, when the water temperature reaches 60 DEG C, opens valve door eight and valve door nine, starts water pump four, and high temperature hot water enters indoor four -pipe fan -coil, and indoor reaches the heating purpose demand, and this can better utilize resources. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of PVT cogeneration system of the utility model.

[0022] In the drawing: 1, PV / T component;2, valve door one;3, outdoor fan;4, compressor;5, throttling valve;6, water tank one;7, water pump one;8, water tank two;9, water pump two;10, valve door two;11, water pump three;12, absorption refrigerating machine unit;13, water pump four;14, valve door three;15, valve door four;16, water tank three;17, indoor four -pipe fan -coil;18, valve door five;19, valve door six;20, storage device;21, valve door seven;22, valve door eight;23, valve door nine. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0024] Please refer to Figure 1The utility model provides a kind of embodiment provided by the utility model: a kind of PV / T combined heat and power system, including PV / T component 1, valve one 2, outdoor fan 3, compressor 4, throttle valve 5, water tank one 6, water pump one 7, water tank two 8, water pump two 9, valve two 10, water pump three 11, absorption refrigerating unit 12, water pump four 13, valve three 14, valve four 15, water tank three 16, indoor four-tube control fan coil 17, valve five 18, valve six 19, power storage device 20, valve seven 21, valve eight 22 and valve nine 23;PV / T component 1 refrigerant outlet is connected in proper order by pipeline through valve five 18, compressor 4, water tank one 6, throttle valve 5, valve one 2 connects PV / T component 1 refrigerant inlet;Throttle valve 5 refrigerant outlet is connected with outdoor fan 3 refrigerant inlet;Outdoor fan 3 refrigerant outlet pipeline is connected with the inlet of compressor 4 by valve six 19;Water tank one 6 upper side water outlet is connected with water tank one 6 lower side water inlet by pipeline in proper order through water pump one 7, water tank two 8, valve four 15;Water tank one 6 upper side water outlet is connected with water tank one 6 lower side water inlet by pipeline in proper order through water pump one 7, water tank two 8, valve four 15;Water tank one 6 upper side water outlet is connected with water tank one 6 lower side water inlet by pipeline in proper order through water pump two 9, water tank three 16, valve three 14;Water tank one 6 lower side water outlet is connected with water tank one 6 lower side water inlet by pipeline in proper order through valve two 10, water pump three 11, absorption refrigerating unit 12.

[0025] Refer to Figure 1 Absorption refrigerating unit 12 is lithium bromide absorption refrigerating machine, compressor 4 is variable frequency compressor, and the internal pipeline of water tank one 6, water tank two 8 and water tank three 16 is double-pipe heat exchanger.

[0026] The working principle is that, in use, the PV / T power generation operation steps are that the PV / T assembly 1 absorbs solar energy, and part of the solar energy is converted into electric energy, and the electric energy converted from part of the solar energy is transmitted to the user end by the power storage device 20; the PV / T cooling and heating operation steps are that, during the day when there is solar radiation, the PV / T assembly 1 absorbs solar energy, and part of the solar energy is converted into heat energy, the low-temperature and low-pressure refrigerant absorbs the heat energy and is converted into a gaseous state, the valve five 18 is opened, the valve six 19 is closed, the gaseous refrigerant is compressed by the compressor 4 and is converted into high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant releases heat in the water tank one 6, the water temperature in the water tank one 6 is increased, the refrigerant is converted from the high-temperature and high-pressure state into a high-temperature and low-pressure state, the refrigerant is converted from the high-temperature and low-pressure state into a low-temperature and low-pressure state through the throttling valve 5, at this time, the valve one 2 is opened, and the low-temperature and low-pressure refrigerant enters the PV / T assembly 1; the cooling operation steps are that, when the temperature in the water tank one 6 reaches 75 DEG C or above, the valve two 10 and the valve seven 21 are opened, the valve three 14, the valve four 15, the valve eight 22 and the valve nine 23 are in the closed state, the water pump three 11 is started, the high-temperature hot water enters the absorption refrigerating machine set 12, the chilled water temperature of the absorption refrigerating machine set 12 reaches 7 DEG C, and enters the indoor four-pipe fan-coil 17, and the indoor reaches the cooling purpose requirement, when there is no solar radiation during the day or at night, the valve one 2 and the valve five 18 are closed, the valve six 19 is opened, and the outdoor fan 3 is started, at this time, the low-temperature and low-pressure refrigerant absorbs the heat energy of air and is converted into a gaseous state; the heating operation steps are that, when the temperature in the water tank one 6 reaches 75 DEG C or above, the water pump one 7 is started, the valve four 15 is opened, and the valve two 10 and the valve seven 21 are in the closed state, the high-temperature hot water exchanges heat with the water in the water tank two 8, and the water temperature in the water tank two 8 is increased, when the water temperature reaches 60 DEG C, the valve eight 22 and the valve nine 23 are opened, the water pump four 13 is started, the high-temperature hot water enters the indoor four-pipe fan-coil 17, and the indoor reaches the heating purpose requirement; when it is needed to provide domestic hot water, the valve three 14 is opened, the water pump two 9 is started, the high-temperature hot water exchanges heat with the water in the water tank three 16, the water temperature in the water tank three 16 is increased, and the water is used by the user end.

[0027] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be realized in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the foregoing embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to which the reference signs are involved.

Claims

1. A PV / T combined heat and power system, characterized by: The PV / T assembly (1), valve one (2), outdoor fan (3), compressor (4), throttle valve (5), water tank one (6), water pump one (7), water tank two (8), water pump two (9), valve two (10), water pump three (11), absorption refrigeration unit (12), water pump four (13), valve three (14), valve four (15), water tank three (16), indoor four-tube fan-coil (17), valve five (18), valve six (19), power storage device (20), valve seven (21), valve eight (22) and valve nine (23) are included. The refrigerant outlet of the PV / T assembly (1) is connected to the compressor (4), water tank one (6) and throttle valve (5) in sequence through the valve five (18), and the valve one (2) is connected to the refrigerant inlet of the PV / T assembly (1). The refrigerant outlet of the throttle valve (5) is connected to the refrigerant inlet of the outdoor fan (3). The refrigerant outlet of the outdoor fan (3) is connected to the inlet of the compressor (4) through the valve six (19). The water outlet on one side of the upper part of the water tank one (6) is connected to the water inlet on the lower side of the water tank one (6) through the water pump one (7), water tank two (8) and valve four (15) in sequence. The water outlet on the other side of the upper part of the water tank one (6) is connected to the water outlet on the lower side of the water tank one (6) through the water pump two (9), water tank three (16) and valve three (14) in sequence. The water outlet on the lower side of the water tank one (6) is connected to the water inlet on the lower side of the water tank one (6) through the valve two (10), water pump three (11) and absorption refrigeration unit (12) in sequence.

2. A PV / T combined cooling and power system according to claim 1, characterized in that: The absorption refrigeration unit (12) is a lithium bromide absorption refrigeration unit, and the compressor (4) is a variable frequency compressor.

3. A PV / T combined heat and power system as claimed in claim 2, wherein: The internal pipes of the water tank one (6), water tank two (8) and water tank three (16) are double-pipe heat exchangers.

Images