CN205980441U - A photovoltaic curtain wall and waste heat heat pump utilization system based on building envelope - Google Patents

Abstract

The utility model discloses a photovoltaic and waste heat pump utilization system based on building enclosure curtain wall, which comprises a wall support arranged on the outer layer of the building, wherein an air source heat pump is arranged at the top of the building, a gap is arranged between the wall support and the outer layer of the building, a photovoltaic curtain wall is laid on the inner side surface of the wall support, and a plurality of air inlets which are all communicated with the gap are arranged below the photovoltaic curtain wall, so that an air interlayer is formed between the photovoltaic curtain wall and the outer layer of the building; the upper end of the photovoltaic curtain wall is provided with a pipeline communicated with the air interlayer, the other end of the pipeline is connected to an air source heat pump, the pipeline is provided with a valve, a temperature measurement control system and a drainage fan, and the temperature measurement control system is connected with the valve. The utility model discloses a photovoltaic curtain increases envelope to the building and keeps photovoltaic curtain work efficiency, the unnecessary heat that produces among the make full use of photovoltaic curtain photoelectric conversion process to provide air source heat pump through the air, obtains higher heat pump heating work efficiency.

Description

A photovoltaic curtain wall and waste heat heat pump utilization system based on building envelope

technical field

The utility model belongs to a solar energy utilization system, in particular to a photovoltaic curtain wall and a waste heat heat pump utilization system based on a building enclosure structure which improves energy utilization efficiency through an air source heat pump.

Background technique

In recent years, with the improvement of people's living standards and the rapid development of my country's construction industry, building energy consumption is gradually increasing to more than 1/3 of the total energy consumption. As a large energy-consuming building, its energy conservation has become a major issue related to the national economy and people's livelihood. my country's energy conservation work started late, and the phenomenon of energy waste is serious. Therefore, the voice of developing renewable energy is getting stronger and stronger. In this context, solar energy has received widespread attention.

The integration of building envelope and photovoltaic building has the following advantages: 1. Reduce the heat transfer between the building and the outside world, reduce the building energy load, 2. Save the solar battery support structure, replace the roof, wall and other structures, 3. Effectively use the building 4. Provide the building with its own power supply, energy saving and economical.

However, in the actual operation of photovoltaic buildings, the photoelectric conversion efficiency of photovoltaic cells will decrease with the increase of operating temperature. If photovoltaic cells are laid directly on the building surface, the operating temperature of photovoltaic cells will rise rapidly while absorbing solar radiation energy, which will lead to a significant drop in power generation efficiency. At the same time, for a large-area photovoltaic curtain wall system, the photovoltaic curtain wall, the closed space formed between the sides of the curtain wall and the building will produce a greenhouse effect due to the absorption of solar radiation energy by the curtain wall, and a large amount of hot air accumulated in the closed space will flow along under the action of thermal buoyancy. As the curtain wall rises, if the hot air is not discharged in time, the temperature at the top of the photovoltaic curtain wall will be too high, which will not only affect the indoor thermal environment of the building, but also seriously affect the power generation efficiency of photovoltaic cells.

Solar water heater is a device that converts sunlight energy into heat energy. It heats water from low temperature to high temperature to meet the needs of people in daily life and production. It is mainly based on vacuum tube solar water heaters. Evacuated tube solar water heaters rely on vacuum collector tubes to convert solar energy into heat. The vacuum heat collector uses the principle that hot water floats up and cold water sinks, so that the water can produce microcirculation to achieve the required hot water. With the continuous expansion of cities, urban buildings are gradually becoming high-rise, and the roof area can no longer meet the layout of solar water heaters for all users. Solar water heaters are gradually developing towards the south balcony. However, due to the disadvantages of being fragile and difficult to maintain, the vacuum tube is not suitable for use in the south balcony of a high-rise building.

Utility model content

Aiming at the above-mentioned problems existing in the prior art, the utility model proposes a photovoltaic curtain wall and waste heat heat pump utilization system based on the building enclosure structure, which can solve the problem of adding an enclosure structure to the building through the photovoltaic curtain wall, maintaining the working efficiency of the photovoltaic curtain wall, and making full use of the photovoltaic curtain wall. Problems such as heat energy generated during the photoelectric conversion process of the curtain wall. The utility model mainly uses the photovoltaic curtain wall and the heat pump to provide excess heat generated by the photovoltaic curtain wall to the air source heat pump through air while performing photovoltaic power generation, so as to improve its working efficiency.

In order to solve the above technical problems, the utility model proposes a photovoltaic and waste heat heat pump utilization system based on building enclosure curtain walls, which includes wall brackets arranged on the outer layer of the building, and the top of the building is equipped with an air source heat pump. There is a gap between the wall bracket and the outer layer of the building, a photovoltaic curtain wall is laid on the inner surface of the wall bracket, and a plurality of air inlets all leading to the gap are arranged under the photovoltaic curtain wall, so that the photovoltaic curtain wall An air barrier is formed between the curtain wall and the outer layer of the building; the upper end of the photovoltaic curtain wall is provided with a pipeline communicating with the air barrier, and the other end of the pipeline is connected to the air source heat pump, and the pipeline A valve, a temperature measurement control system and a drainage fan are provided, and the temperature measurement control system is connected with the valve.

Further, in the present utility model, the wall bracket is located on the south side of the building, and the photovoltaic curtain wall is vertically placed on the south side of the building to be used as a building envelope, and the electric energy generated by the photovoltaic curtain wall is transmitted to the building Electrical equipment.

The installation orientation of the draft fan is to draw the hot air in the air compartment into the pipeline and guide it into the air source heat pump, and the air source heat pump provides hot water supply for the building.

Compared with the prior art, the beneficial effects of the utility model are:

(1) Taking advantage of the poor heat transfer performance of air, through the air barrier between the photovoltaic curtain wall and the main body of the building, the heat exchange rate between the building and the external environment can be reduced, the energy load of the building can be reduced, and it can also reduce noise and reduce the surface area of the wall. The function of the formation of face cream.

(2) The photoelectric conversion efficiency of the photovoltaic panel is easily affected by temperature. When it is working normally in the outside world, if the heat is not exported in time, the temperature of the backplane will continue to rise, which will greatly reduce the photoelectric conversion efficiency. Using the air between the building to carry heat and export it in time can reduce the excessive temperature during work and improve photovoltaic efficiency. Moreover, the thermal energy generated by the photovoltaic power generation process is collected and utilized to improve the comprehensive energy utilization rate of the system as a whole.

(3) The working principle of the air source heat pump is the Carnot cycle, with outdoor air as the cooling source and indoor air as the heat source. Keeping other conditions unchanged, the higher the temperature of the cold source, the greater the COP of the heat pump. Therefore, the air source heat pump using this technology can obtain a higher cooling source temperature than the external ambient temperature, and obtain higher heating efficiency of the heat pump.

Description of drawings

Fig. 1 is a side sectional view of the photovoltaic and waste heat heat pump utilization system based on the building enclosure curtain wall of the present invention;

FIG. 2 is a front view of the system shown in FIG. 1 .

detailed description

The technical scheme of the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the described specific embodiments are only for explaining the utility model, and are not intended to limit the utility model.

As shown in Figure 1 and Figure 2, a photovoltaic and waste heat heat pump utilization system based on building enclosure curtain wall proposed by the utility model includes a wall bracket 2 arranged on the outer layer of the building 9, the wall bracket 2 Preferably located on the south side of the building 9, the top of the building 9 is provided with an air source heat pump 8, there is a gap between the wall bracket 2 and the outer layer of the building, and the inner surface of the wall bracket 2 is laid with photovoltaic Curtain wall 1, the photovoltaic curtain wall 1 is placed vertically on the south side of the building 9 to be used as a building envelope, and performs photoelectric effect, and the electric energy generated by the photovoltaic curtain wall 1 is transmitted to the electrical equipment of the building 9. In the utility model Using the photovoltaic curtain wall 1 as an enclosure structure can dissipate the energy of the building 9 and reduce the interference of environmental factors such as noise on the building 9, and also reduce the energy load of the building 9. The photovoltaic curtain wall 1 is provided with a plurality of uniform To the air inlet 3 of the gap, thereby an air interlayer 10 is formed between the photovoltaic curtain wall 1 and the building outer layer 9, the quantity of the air inlet 3 for air entering is determined according to the actual situation of the building 9; The upper end of the photovoltaic curtain wall 1 is provided with a pipeline 7 communicating with the air barrier 10. The number of pipelines 7 laid depends on the actual situation of the building 9. As shown in Figure 2, the other end of the pipeline 7 is connected to the An air source heat pump 8, the pipeline 7 is provided with a valve 5, a temperature measurement control system 4 and a drainage fan 6, the temperature measurement control system 4 is connected with the drainage fan 6 and the valve 5, and the temperature measurement control system 4 is used to monitor the temperature in the pipeline 7, and control the air flow introduced into the air source heat pump 8 through the switch of the valve 5 and the power of the drainage fan 6. When the photovoltaic curtain wall 1 is working, it absorbs solar energy and has redundant The heat of the photovoltaic curtain wall 1 and the building 9 increases the temperature in the air compartment 10, and the temperature of the photovoltaic curtain wall 1 further rises. In order to maintain the normal working efficiency of the photovoltaic curtain wall 1, the installation direction of the drainage fan 6 is , when the draft fan 6 works, the hot air in the air compartment 10 is drawn into the pipeline 7 and introduced into the air source heat pump 8, and the air source heat pump 8 provides hot water supply for the building, so that the photovoltaic curtain wall 1 The temperature drops to maintain normal working efficiency; the temperature of the air at the 8 places of the air source heat pump rises, and according to the reverse Carnot cycle law, the COP of the heat pump rises, which can improve the energy utilization efficiency of the air source heat pump air conditioner and the air source heat pump water heater. To sum up, the utility model organically combines the building enclosure structure with photovoltaic power generation technology and heat pump technology

Although the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, rather than restrictive. Under the enlightenment of the utility model, many deformations can be made without departing from the purpose of the utility model, and these all belong to the protection of the utility model.

Claims (3)

1. a kind of photovoltaic based on building enclosure curtain wall and residual heat pump utilize system, including on the outer layer being arranged on building (9) Stent wall (2) it is characterised in that the top of described building (9) is provided with air source heat pump (8), described stent wall (2) with There is between construction outer layer space, the medial surface of described stent wall (2) is equipped with photovoltaic curtain wall (1), described photovoltaic curtain wall (1) Lower section be provided with multiple air intlets (3) each leading to space, thus in described photovoltaic curtain wall (1) and described building (9) outer layer Between form an air buffer (10)；The upper end of described photovoltaic curtain wall (1) is provided with the pipeline connecting with described air buffer (10) (7), the other end of described pipeline (7) connects to described air source heat pump (8), and described pipeline (7) is provided with valve (5), thermometric control System (4) processed and drain blower fan (6), described temp testing controlling system (4) is coupled with described valve (5).

2. the photovoltaic based on building enclosure curtain wall and residual heat pump utilize system it is characterised in that institute according to claim 1 State the south that stent wall (2) is located at described building (9), the south that described photovoltaic curtain wall (1) is vertically positioned in building (9) is used Do the building enclosure built, the electric energy that described photovoltaic curtain wall (1) produces is transferred to the electrical equipment of building (9).

3. the photovoltaic based on building enclosure curtain wall and residual heat pump utilize system it is characterised in that institute according to claim 1 The installation stating drain blower fan (6) is oriented and for hot-air suction pipeline (7) in air buffer (10) afterwards and to import described air Source heat pump (8), described air source heat pump (8) provides hot water supply for building.