CN202281302U - Self-control hot-wind type solar floor heat accumulation system - Google Patents

Abstract

The invention relates to a self-control hot air type solar floor heat storage system, which belongs to the technical field of integrated utilization of renewable energy and buildings. It is characterized in that the air is driven by a circulating fan to perform closed circulation in the heat storage system composed of solar air collectors, ventilation ducts and heat storage floors, and the heat storage floor is used to store and release heat; the structure of the heat storage floor From bottom to top, it includes waterproof layer, thermal insulation layer, air channel, concrete heat storage layer, and ground decoration layer; the air channels in the heat storage floor are arranged in the same way, and concrete or masonry columns are arranged staggered inside; the damper and The circulation fans are automatically controlled by temperature sensors and the required electricity is supplied by solar panels. The utility model has the advantages of simple structure, convenient control, reliable operation, low cost and high degree of integration with buildings.

Description

Self-controlled hot air solar floor heat storage system

technical field

The utility model belongs to the technical field of integrated utilization of renewable energy and buildings, and in particular relates to a self-controlled hot air type solar floor heat storage system. the

Background technique

For a long time, the thermal stability and comfort of solar-heated residential buildings in villages and towns in cold regions of my country need to be improved urgently. Due to the intermittent and unstable heat supply of solar energy, the indoor temperature of the solar heating room fluctuates greatly. At night or on cloudy days, the indoor temperature often cannot meet the thermal comfort requirements of the human body. Although people have developed a variety of solar heat storage systems and methods, which can solve such problems to a certain extent, there is still an urgent need to develop simple, practical, easy-to-control, It is a solar heat storage technology that is reliable in operation, highly integrated with buildings, low in construction and maintenance costs, and can be effectively popularized and applied. the

After retrieval, it was found that Patent No. 02109563 discloses a method and device for heating and cooling with solar heat storage. During heating/cooling in summer, the heat/cooling device is used to extract heat/cold energy for heating or cooling. This technology is relatively complicated and the device cost is high; Patent No. 200610019475 discloses a heat-conducting asphalt concrete roof solar heat storage System, the system is equipped with a heat conduction pipe in the asphalt concrete layer of the roof, and a heat storage tank built with a concrete layer is installed in the soil layer. After the cold water in the heat conduction pipe is heated by the solar energy collected by the asphalt concrete, it can be directly used or stored by the user The heat storage tank is used for heating in winter. Since the water pipes set in the concrete are prone to frost heaving at low temperature in winter, this technology is not suitable for application in cold regions. Patent No. 20201010166767 discloses a solar heat storage heating device for buildings in high latitude areas. The upper heat exchange tank is connected to the heat exchange cylinder, the super long heat collection tube is plugged into the heat exchange cylinder, and the lower heat exchanger is connected to the cold water through the communication pipe. The flow channel is connected, the heating, heat exchanger, hot water exchanger and heat exchange exchanger are set in the lower water storage tank, the upper water exchange tank and the heat exchange exchanger are connected by a heat circulation pipe, and the heat circulation pipe connects the upper water exchange tank and the heat exchange The heat exchanger is connected. The technical system form and operation control are more complex, and the equipment cost is higher. Patent No. 200920076580 discloses a solar heat storage heating device, combined with a solar water heater and a water cellar, the solar water heater is used to continuously heat the water in the water cellar during the day, a circulating pump is used as the circulating power, and a fan coil is used for indoor heating. This technology needs to be equipped with solar water heaters, circulation pumps, fan coils, first stop valve, second stop valve, third stop valve, and fourth stop valve. The equipment and piping system are relatively complicated, which is not conducive to popularization in residential buildings in villages and towns. Patent No. 201010248005.8 discloses a solar floor heating energy-saving device. Its main features are: the outlet pipe of the solar heat collection device is connected with a bed heating device connected in parallel with the floor heating device, and the bed heating device is located below the bed body; the floor heating device and Control valves are respectively arranged between the bed body heating device and the solar heat collecting device. Due to the discontinuity of solar radiation, the adjustment process of the system is cumbersome. Patent No. 200920128065.9 discloses a solar heat storage type heating and ventilation wall, in which a heat storage wall, a heat storage wall, Heat storage ventilation channel or a combination of the two; the outer side of the heat storage wall or the heat storage ventilation channel is provided with a transparent cover, and there is an air interlayer between the transparent cover and the heat storage wall, and between the heat storage wall and the thermal insulation layer ; The transparent cover is provided with an upper vent with a valve, and the heat storage wall is provided with an upper vent with a valve and a lower vent. This technology has a high degree of integration with the building, but the tuyere valve is manually operated, which is inconvenient to control. European Patent Office Patent No. FR 2951484 (A1) discloses a passive solar house that provides light and heat for buildings. One side of the sloping roof of this utility model is made of transparent materials, and the inner side of the roof or wall is a heat storage structure. The control system connected with the internal and external environmental sensors of the building realizes the regulating effect through the natural or forced convection of the indoor air. The disadvantage of this device is that it is only suitable for buildings with sloped roofs. European Patent Office Patent No. WO 9217664 (A1) discloses a device that regulates the temperature of different building components. Each building component of the device itself has the functions of collecting, transmitting and storing solar energy, and both include two power supplies. The passage system for the transmission of air or other heat transfer medium, the building system of this utility model has a complex structure and requires high equipment quality, so it is difficult to promote it in existing buildings in China. the

Contents of the invention

The purpose of this utility model is to provide a self-control hot air type solar energy floor heat storage system to solve the problem that the indoor temperature of the solar heating room of residential buildings in cold areas fluctuates greatly day and night, and the indoor temperature at night or on cloudy days is often lower than the comfort requirements of the human body. In order to improve the solar thermal utilization efficiency and indoor thermal environment comfort of such buildings. the

The technical scheme of the utility model is as follows: a self-controlled hot air solar floor heat storage system, which is composed of a solar air heat collector, a temperature sensor, a temperature control damper, a circulating fan, an air duct, and a heat storage floor. One of the technical features of the utility model is: the heat storage system uses a circulating fan to drive air to perform a closed cycle in the heat storage system composed of a solar air heat collector, a ventilation duct and a heat storage floor, and uses the heat storage floor to Heat is stored and released. The air is heated in the solar air heat collector and flows into the air channel of the heat storage floor along the air supply pipe. During the flow of hot air along the air channel of the heat storage floor, the heat storage layer of the floor absorbs and stores the heat of the air. At night or on a cloudy day with low solar radiation, when the indoor temperature is lower than the surface temperature of the thermal storage floor, the heat stored in the thermal storage layer of the floor is released to the room for heating, and the cooled air in the air channel is collected into the return air duct , back to solar air collector hydronic heating. The second technical feature is: the structure of the heat storage floor includes a waterproof layer, an insulation layer, an air channel, a heat storage layer, and a ground decoration layer from bottom to top. The heat storage material adopts concrete with high specific heat capacity and stable performance; the number of air channels in the heat storage floor is set according to the width of the room, and concrete or masonry columns are arranged staggered and orderly in the air channels to increase air disturbance and the flow of air in the air channels Arranged according to the same program to ensure the balance of air flow resistance in each channel; the thermal insulation layer of the heat storage floor prevents heat loss to the soil. The third technical feature is: the solar air heat collector is installed on the wall below the south-facing window or on the west-facing wall of the building; a temperature sensor is installed at the outlet of the solar air heat collector, and dampers are installed at the inlet and outlet of the solar air heat collector. A circulating fan is installed at the inlet or outlet of the air collector; the above damper and circulating fan are automatically controlled according to the temperature value set by the temperature sensor. When the air at the outlet of the solar air collector is heated to the set temperature, the inlet of the solar air collector , the temperature control damper at the outlet opens automatically at the same time, and the circulation fan set at the collector inlet or outlet starts to run automatically. When the air temperature at the outlet of the solar air collector is lower than the set temperature, the circulation fan automatically stops running, and the temperature control The dampers also close automatically at the same time to prevent cold air from flowing into the floor air ducts; the power required to drive the aforementioned fans and the temperature-controlled dampers is supplied by solar panels. the

The effect and benefit of the utility model are to effectively maintain the air temperature of the solar heating room and improve the indoor comfort at night or on cloudy days. Compared with the existing technology, the outstanding features of the utility model are simple and practical, convenient control, reliable operation, obvious energy-saving effect, high degree of integration with the building, low engineering cost and maintenance cost, especially in the construction of new rural houses in my country and the new In energy development and utilization, the self-control hot air type solar floor heat storage system of the utility model has strong practicability in the new houses and renovated houses in the cold areas with large quantities and wide areas. the

Description of drawings

Figure 1 is a schematic diagram of the front elevation of the heat collection and storage system of the present invention. the

Fig. 2 is a side elevation schematic diagram of the heat collection and storage system of the present invention. the

Fig. 3 is a schematic diagram of the temperature control damper system of the present invention. the

Fig. 4 is a plane layout diagram of the heat storage floor of the present invention. the

Fig. 5 is a sectional view of the thermal storage floor of the present invention. the

In the figure: 1 heat collector, 2 temperature sensor, 3 temperature control damper, 4 circulation fan, 5 air supply duct, 6 return air duct, 7 air passage of heat storage floor, 8 inlet of heat storage floor air supply duct, 9 storage Hot floor return air duct outlet, I floor decoration layer, II concrete floor heat storage layer, III air channel, IV thermal insulation layer, V moisture-proof layer. the

Detailed ways

The specific embodiment of the utility model is described in detail below in conjunction with technical scheme and accompanying drawing. the

Example 1: Using south-facing solar air heat collectors for heat collection and floor heat storage. The concrete implementation technology is as follows: the solar air heat collector 1 is set on the lower wall of the south-facing window of the residential building, and the temperature sensor 2 is set at the outlet of the solar air heat collector 1. When the air at the outlet of the solar air heat collector 1 is heated to the set temperature When the temperature is fixed, the temperature control dampers 3 at the inlet and outlet of the solar air heat collector 1 are automatically opened at the same time, and the circulation fan 4 arranged at the inlet or outlet of the heat collector 1 starts to run automatically. Driven by the circulating fan, the hot air is sent into the air channel 7 of the heat storage floor along the air supply pipe 5, and the hot air absorbs the heat of the air by using the high specific heat capacity of the concrete during the flow along the air channel 7 of the same process , so that the heat is stored in the concrete heat storage layer II. At night or on a cloudy day with low solar radiation, when the indoor temperature is lower than the surface temperature of the heat storage floor, the heat stored in the concrete heat storage layer II is released to the room for heating. Floor insulation IV at the bottom of the air channel prevents heat loss to the soil. The cold air after cooling in the air channel 7 is collected into the return air duct 6, and returns to the solar air heat collector 1 for circulation heating. When the air temperature at the outlet of the solar air heat collector 1 is lower than the set temperature, the circulation fan 4 stops running automatically, and the temperature control damper 3 is also automatically closed at the same time to prevent cold air from flowing into the floor air passage. the

Embodiment 2: Using west-facing solar air heat collectors for heat collection and floor heat storage. The specific implementation technology is as follows: solar air heat collector 1 is set on the west-facing wall of the residential building, and temperature sensor 2 is set at the outlet of solar air heat collector 1. When the air at the outlet of solar air heat collector 1 is heated to the set temperature , the temperature control damper 3 at the inlet and outlet of the solar air heat collector 1 is automatically opened at the same time, and the circulation fan 4 arranged at the inlet or outlet of the heat collector 1 starts to run automatically. Driven by the circulating fan, the hot air is sent into the air channel 7 of the heat storage floor along the air supply pipe 5, and the hot air absorbs the heat of the air by using the high specific heat capacity of the concrete during the flow along the air channel 7 of the same process , so that the heat is stored in the concrete heat storage layer II. At night or on a cloudy day with low solar radiation, when the indoor temperature is lower than the surface temperature of the heat storage floor, the heat stored in the concrete heat storage layer II is released to the room for heating. Insulation IV at the bottom of the air channel prevents heat loss to the soil. The cold air cooled in the air channel 7 is collected into the return air main pipe 6, and returns to the solar air heat collector 1 for circulation and heating. When the air temperature at the outlet of the solar air heat collector 1 is lower than the set temperature, the circulation fan 4 stops running automatically, and the temperature control damper 3 is also automatically closed at the same time to prevent cold air from flowing into the floor air passage. the

Embodiment 3: Utilize south-facing and west-facing solar air heat collectors to combine heat collection and floor heat storage. The use of west-facing solar air collectors can extend the heat collection time and improve heat storage efficiency. The specific implementation technology is as follows: install solar air heat collectors 1-N and 1-W on the south-facing window wall and west-facing wall of the residential building respectively, and these two sets of heat collectors operate in parallel. Set temperature sensors 2-N and 2-W at the outlets of solar air collectors 1-N and 1-W respectively, when the air at the outlets of solar air collectors 1-N and 1-W is heated to the set temperature , the temperature control dampers 3-N and 3-W at the inlet and outlet of the solar air collector 1-N and 1-W are automatically opened respectively, and the circulation fans 4-N and 4-W set at the inlet or outlet of the collector 1 Automatic operation respectively; driven by the circulating fan, the hot air is sent into the air passage 7 of the heat storage floor along the air supply pipe 5, and the hot air flows along the air passage 7 of the same program, utilizing the high specific heat capacity of concrete Absorb the heat of the air and store the heat in the concrete thermal storage layer II. At night or on a cloudy day with low solar radiation, when the indoor temperature is lower than the surface temperature of the heat storage floor, the heat stored in the concrete heat storage layer II is released to the room for heating. Insulation IV at the bottom of the air channel prevents heat loss to the soil. The cold air cooled in the air channel 7 is collected into the return air main pipe 6, and returns to the solar air heat collector 1 for circulation and heating. When the air temperature at the outlet of the solar air heat collector 1-N and 1-W is lower than the set temperature, the circulating fans 4-N and 4-W will automatically stop running respectively, and the temperature control dampers 3-N and 3-W will also Automatically shuts off to prevent cold air from flowing into the floor air channels. the

Claims (3)

1. automatic control hot air type solar energy floor hold over system; Comprise solar energy air heat collector, accumulation of heat floor, temperature sensor, temperature control air door, airduct, circulating fan; It is characterized in that air carries out closed cycle by the circulating fan driving in the hold over system that solar energy air heat collector, ventilation shaft and accumulation of heat floor are formed, employing accumulation of heat floor stores heat and discharges; Solar energy air heat collector adds hot-air, when heated air is flowed through the ventilating duct on accumulation of heat floor, heat is stored in the recuperation layer, when night or cloudy indoor temperature are lower than the accumulation of heat floor surface temperature, by the accumulation of heat floor to the room release heat.

2. a kind of automatic control hot air type solar energy floor hold over system according to claim 1, it is characterized in that: the structure on accumulation of heat floor comprises watertight composition, heat-insulation layer, air duct, recuperation layer, ground decoration layer from the bottom to top; Heat-storing material adopts concrete; Air duct quantity in the accumulation of heat floor is provided with according to the room width; Staggered concrete or the masonry column of being provided with in order in the air duct; The flow process of air in air duct pressed reversed return type and arranged.

3. a kind of automatic control hot air type solar energy floor hold over system according to claim 1 is characterized in that: solar energy air heat collector is arranged on building south orientation breast or western on body of wall; In the solar energy air heat collector outlet temperature sensor is set, air door is set, circulating fan is set at the solar energy air heat collector import or export in solar energy air heat collector import, outlet; Above-mentioned air door and blower fan are controlled according to the temperature value of temperature sensor setting automatically, drive the required electric power of blower fan and temperature control air door by the solar cell Plate supplying.

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