Solar PVT-ground source coupling heat pump cold and hot water unit

Abstract

The utility model belongs to the field of comprehensive utilization of photovoltaic photo-thermal and geothermal energy and combined application of heating, ventilation and air conditioning, and discloses a solar PVT-ground source coupling heat pump cold and hot water unit. Comprising a source side heat exchanger, a unit source side heat exchanger, a domestic hot water side heat exchanger, a wind disc side heat exchanger, a source side circulating pump, a wind disc side circulating pump, a domestic hot water side circulating pump, a PVT side circulating pump, a unit compressor, a medium charging valve, a tap water charging valve, a first electric three-way valve and a second electric three-way valve. According to the solar PVT-ground source coupling heat pump cold and hot water unit, photoelectric and photo-thermal renewable and clean energy is fully utilized; clean earth energy is used for storing energy and keeping the energy in a stable state; low-energy-consumption production of cold and hot water at the tail end is achieved through control, and the comfort degree of a user is guaranteed; and the unit realizes one-key start and shutdown and full-automatic unattended operation.

Description

Technical Field

[0001] The utility model belongs to the field of comprehensive utilization of photovoltaic light and heat, geothermal energy and combined with HVAC application, and specifically relates to a solar PVT-ground source coupled heat pump cold and hot water unit. Background Art

[0002] Solar energy is the world's largest and most widely used renewable energy source, and it is inexhaustible. After part of the solar energy is converted into electrical energy, the residual heat of solar photovoltaic technology dissipates into the environment, resulting in energy waste. In addition, the increase in the temperature of the photovoltaic panels themselves will lead to a decrease in power generation efficiency and even shorten the service life. In the process of converting solar energy into thermal energy, the photothermal conversion process is not maximized. Therefore, there are technical defects in the single form of solar energy utilization, resulting in low solar energy utilization.

[0003] Geothermal energy is also a clean and renewable energy source. The underground temperature is relatively stable all year round. There is no combustion, smoke exhaust, or waste. It has the advantages of significant environmental benefits, low maintenance costs, and a long service life.

[0004] The utilization rate of solar energy and geothermal energy has become a hot topic in today's society. In the field of solar energy, photovoltaics and solar thermal energy are the main drivers, converting the photovoltaic effect into electrical energy. Solar thermal technology collects heat for use, while collecting heat to increase the service life and power generation efficiency of photovoltaic panels. In the field of geothermal energy, underground wells are used as cold and heat sources to store energy, reduce energy loss, and convert energy into HVAC systems, bringing a good experience to users. Utility Model Content

[0005] The purpose of the utility model is to provide a solar PVT-ground source coupled heat pump hot and cold water unit to solve the problems raised in the above background technology.

[0006] In view of the above problems, the utility model proposes a solar PVT-ground source coupled heat pump hot and cold water unit, which aims to utilize the advantages of solar photovoltaic and photothermal effects and geothermal energy storage to achieve hot water production, terminal heating and cooling effects through heat exchange.

[0007] The technical solution of this utility model:

[0008] The solar PVT-ground source coupled heat pump hot and cold water unit comprises a source side heat exchanger 101, a unit source side heat exchanger 102, a domestic hot water side heat exchanger 103, a fan side heat exchanger 104, a source side circulation pump 201, a fan side circulation pump 202, a domestic hot water side circulation pump 203, a PVT side circulation pump 204, a unit compressor 301, a medium filling valve 401, a tap water filling valve 402, a first electric three-way valve 501, and a second electric three-way valve 502; the source side heat exchanger 101, the unit source side heat exchanger 102, the domestic hot water side heat exchanger 103, the fan side heat exchanger 104, the source side circulation pump 201, the fan side circulation pump 202, the domestic hot water side circulation pump 203, the PVT side circulation pump 204, and the unit compressor 301 are all integrated and installed on the base;

[0009] The PVT side circulation pump 204, the A side of the source side heat exchanger 101, and the external solar energy PVT are connected in sequence through pipelines to form a loop; a medium filling valve 401 is installed on the pipeline connecting the PVT side circulation pump 204 and the A side of the source side heat exchanger 101. The medium filling valve 401 is an interface for filling the medium, and the heat of the external solar energy PVT is circulated through the PVT side circulation pump 204;

[0010] The source-side circulation pump 201, the A side of the source-side heat exchanger 102 of the unit, the B side of the source-side heat exchanger 101, the underground energy storage well and the first electric three-way valve 501 are connected in sequence through pipelines to form a loop; after the water in the pipeline exchanges heat with the A side of the source-side heat exchanger 101, the heat is stored in the underground energy storage well;

[0011] The B side of the unit source side heat exchanger 102, the unit compressor 301, the A side of the domestic hot water side heat exchanger 103, and the A side of the fan side heat exchanger 104 are connected in sequence through pipelines to form a loop; in this loop, the unit compressor 301 is used to extract heat;

[0012] The domestic hot water side circulation pump 203, the B side of the domestic hot water side heat exchanger 103, and the domestic hot water tank are sequentially connected through pipelines to form a loop; the domestic hot water side circulation pump 203 is used to circulate hot water and store it in the domestic hot water tank;

[0013] The B side of the fan side heat exchanger 104, the fan side circulation pump 202, the second electric three-way valve 502 and the indoor coil pipeline are connected in sequence to form a loop, and the fan side circulation pump 202 is used to circulate water to the indoor coil side for use;

[0014] The domestic hot water side circulation pump 203 and the domestic hot water tank are connected to the tap water through a pipeline, and the domestic hot water side circulation pump 203 is arranged on the pipeline.

[0015] Beneficial effects of the utility model:

[0016] (1) Make full use of renewable and clean energy such as photovoltaic and solar thermal energy;

[0017] (2) Using clean geothermal energy to store and maintain energy in a stable state;

[0018] (3) Through control, low-energy production of hot and cold water at the end is achieved and the comfort of users is ensured;

[0019] (4) The unit can be started and stopped with one button, and operates fully automatically without human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the schematic diagram of the solar PVT-ground source coupled heat pump hot and cold water unit.

[0021] Figure 2 This is a schematic diagram of the structure of a solar PVT-ground source coupled heat pump hot and cold water unit.

[0022] In the figure: 101 source side heat exchanger, 102 unit source side heat exchanger, 103 domestic hot water side heat exchanger, 104 fan disk side heat exchanger, 201 source side circulation pump, 202 fan disk side circulation pump, 203 domestic hot water side circulation pump, 204 PVT side circulation pump, 301 unit compressor, 401 medium filling valve, 402 tap water filling valve, 501 electric three-way valve, 502 electric three-way valve. DETAILED DESCRIPTION

[0023] The specific implementation of the solar PVT-ground source coupled heat pump hot and cold water unit is further described below in conjunction with the accompanying drawings and technical solutions.

[0024] The solar PVT-ground source coupled heat pump hot and cold water unit comprises a source side heat exchanger 101, a unit source side heat exchanger 102, a domestic hot water side heat exchanger 103, a fan side heat exchanger 104, a source side circulation pump 201, a fan side circulation pump 202, a domestic hot water side circulation pump 203, a PVT side circulation pump 204, a unit compressor 301, a medium filling valve 401, a tap water filling valve 402, a first electric three-way valve 501, and a second electric three-way valve 502; the source side heat exchanger 101, the unit source side heat exchanger 102, the domestic hot water side heat exchanger 103, the fan side heat exchanger 104, the source side circulation pump 201, the fan side circulation pump 202, the domestic hot water side circulation pump 203, the PVT side circulation pump 204, and the unit compressor 301 are all integrated and installed on the base;

[0025] The PVT side circulation pump 204, the A side of the source side heat exchanger 101, and the external solar energy PVT are connected in sequence through pipelines to form a loop; a medium filling valve 401 is installed on the pipeline connecting the PVT side circulation pump 204 and the A side of the source side heat exchanger 101. The medium filling valve 401 is an interface for filling the medium, and the heat of the external solar energy PVT is circulated through the PVT side circulation pump 204;

[0026] The source-side circulation pump 201, the A side of the source-side heat exchanger 102 of the unit, the B side of the source-side heat exchanger 101, the underground energy storage well and the first electric three-way valve 501 are connected in sequence through pipelines to form a loop; after the water in the pipeline exchanges heat with the A side of the source-side heat exchanger 101, the heat is stored in the underground energy storage well;

[0027] The B side of the unit source side heat exchanger 102, the unit compressor 301, the A side of the domestic hot water side heat exchanger 103, and the A side of the fan side heat exchanger 104 are connected in sequence through pipelines to form a loop; in this loop, the unit compressor 301 is used to extract heat;

[0028] The domestic hot water side circulation pump 203, the B side of the domestic hot water side heat exchanger 103, and the domestic hot water tank are sequentially connected through pipelines to form a loop; the domestic hot water side circulation pump 203 is used to circulate hot water and store it in the domestic hot water tank;

[0029] The B side of the fan side heat exchanger 104, the fan side circulation pump 202, the second electric three-way valve 502 and the indoor coil pipeline are connected in sequence to form a loop, and the fan side circulation pump 202 is used to circulate water to the indoor coil side for use;

[0030] The domestic hot water side circulation pump 203 and the domestic hot water tank are connected to the tap water through a pipeline, and the domestic hot water side circulation pump 203 is arranged on the pipeline;

[0031] Through the conversion of the electric three-way valve, the energy from the underground energy storage well can be directly supplied to the indoor coil, realizing direct cooling and heating.

[0032] Furthermore, the circulation pump can be automatically operated according to temperature and time.

[0033] Furthermore, the heat exchanger is any one of a plate heat exchanger, a shell and coil heat exchanger, and a sleeve and tube heat exchanger.

[0034] Furthermore, the circulation pump is any one of a vertical pipeline pump, a horizontal pipeline pump or a multi-stage pump.

[0035] Furthermore, the compressor may be a scroll compressor.

[0036] Furthermore, the medium circulating in the solar PVT side pipeline is antifreeze liquid.

[0037] The PVT side circulation pump of the utility model transfers the heat generated by the solar PVT to the heat exchanger, and transfers the heat to the side pipe circulation system of the geothermal underground well through the source side heat exchanger, and controls the PVT side circulation pump to keep the circulating medium with good heat exchange effect. Then, the heat is stored in the underground energy storage well through the circulation of the source side circulation pump, and the heat of the source side heat exchanger of the unit is extracted through the compressor. The fan side circulation pump and the domestic hot water side circulation pump absorb heat through the tap water circulation to supply domestic hot water and indoor coils.

[0038] This utility model uses clean and renewable energy solar energy as a heat source and geothermal energy storage energy, and combines geothermal heat pump technology to utilize solar energy heat energy and store it in the soil of underground wells, which can solve the problem of heating and heating. After a long period of operation, the soil temperature is too low and the system cannot operate. Then, the heat is circulated through the source side circulation pump to store it in the underground energy storage well, and the heat of the source side heat exchanger of the unit is extracted through the compressor. The fan side circulation pump and the domestic hot water side circulation pump absorb heat through the tap water circulation to supply domestic hot water and indoor coils.

[0039] The above-described embodiments only express the implementation methods of the utility model of the solar PVT-ground source coupled heat pump hot and cold water unit, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for technicians in this field, several improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A solar PVT-ground source coupled heat pump hot and cold water unit, characterized in that: The solar PVT-ground source coupled heat pump cold and hot water unit comprises a source side heat exchanger (101), a unit source side heat exchanger (102), a domestic hot water side heat exchanger (103), a fan side heat exchanger (104), a source side circulation pump (201), a fan side circulation pump (202), a domestic hot water side circulation pump (203), a PVT side circulation pump (204), a unit compressor (301), a medium filling valve (401), a tap water filling valve (402), a first electric three-way valve (501), and a second electric three-way valve (502); the source side heat exchanger (101), the unit source side heat exchanger (102), the domestic hot water side heat exchanger (103), the fan side heat exchanger (104), the source side circulation pump (201), the fan side circulation pump (202), the domestic hot water side circulation pump (203), the PVT side circulation pump (204), and the unit compressor (301) are all integrated and installed on a base; The PVT side circulation pump (204), the A side of the source side heat exchanger (101), and the external solar energy PVT are connected in sequence through pipelines to form a loop; a medium filling valve (401) is installed on the pipeline connecting the PVT side circulation pump (204) and the A side of the source side heat exchanger (101), and the medium filling valve (401) is an interface for filling the medium, and the heat of the external solar energy PVT is circulated through the PVT side circulation pump (204); The source-side circulation pump (201), the A side of the source-side heat exchanger (102) of the unit, the B side of the source-side heat exchanger (101), the underground energy storage well and the first electric three-way valve (501) are connected in sequence through pipelines to form a loop; after the water in the pipeline exchanges heat with the A side of the source-side heat exchanger (101), the heat is stored in the underground energy storage well; The B side of the unit source side heat exchanger (102), the unit compressor (301), the A side of the domestic hot water side heat exchanger (103), and the A side of the fan side heat exchanger (104) are connected in sequence through pipelines to form a loop; in the loop, heat is extracted by using the unit compressor (301); The domestic hot water side circulation pump (203), the B side of the domestic hot water side heat exchanger (103), and the domestic hot water tank are sequentially connected through pipelines to form a loop; the domestic hot water side circulation pump (203) is used to circulate hot water and store it in the domestic hot water tank; The B side of the fan disk side heat exchanger (104), the fan disk side circulation pump (202), the second electric three-way valve (502) and the indoor coil pipeline are connected in sequence to form a loop, and the fan disk side circulation pump (202) is used to circulate water to the indoor coil side for use; The domestic hot water side circulation pump (203) and the domestic hot water tank are connected to the tap water through a pipeline, and the domestic hot water side circulation pump (203) is arranged on the pipeline.

2. The solar PVT-ground source coupled heat pump hot and cold water unit according to claim 1, characterized in that: The heat exchanger is one of a plate heat exchanger, a shell and coil heat exchanger, and a sleeve and tube heat exchanger.

3. The solar PVT-ground source coupled heat pump hot and cold water unit according to claim 1, characterized in that: The circulating pump is a type of vertical pipeline pump, horizontal pipeline pump, or multistage pump.

4. The solar PVT-ground source coupled heat pump hot and cold water unit according to claim 1, characterized in that: The compressor is a scroll compressor.

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