[0039] Example 1
[0040] Combine figure 1 with figure 2 As shown, the solar heating and drying system of the present invention includes a solar heat collection box 1, a dehumidification heating return air device 2, a light-transmitting infrared heat preservation cover 3, and an auxiliary heating system. The solar heat collection box 1 includes a container, which is located outside the container. The surface is provided with a heat-absorbing coating; the moisture-removing heating and air-returning device 2 is arranged at the end of the solar heat collection box 1, and can introduce and convert the hot moisture inside the solar heat collection box 1 into hot dry air and then discharge it to The interior of the solar heat collection box 1; the transparent infrared heat preservation cover 3 is arranged on the top surface of the solar heat collection box 1; the auxiliary heating system has a heating part which is arranged inside the container.
[0041] In the solar heating and drying system of the present invention, the heat-absorbing coating is used to convert the radiant energy of the sun into heat; the dehumidification heating and air-returning device 2 is used to introduce and convert the hot moisture inside the solar heat collection box 1 The hot dry air is discharged into the solar heat collection box 1; the light-transmitting infrared insulation cover 3 is used to reduce the infrared transmittance, so that the temperature of the solar heat collection box 1 is not affected by air convection and is lost; the auxiliary heating system is used In the case of insufficient sunlight, etc., auxiliary heating; the above-mentioned components can be conventional components in the field.
[0042] Specifically, in the solar heat collection box 1, the container is a conventional container with a standard size (for example, 20GP, 40GP, etc.), which is convenient for vehicle-mounted movement. Specifically, the container is a closed box body, one end (first end) of which is provided with a door for loading and unloading goods, and the heat-absorbing coating is provided on the two end surfaces (ie, the first end and the second end) of the container. ), on both sides and the outer surface of the top surface.
[0043] The endothermic coating is a matte paint layer in which endothermic particles are dispersed. The matt paint of the matt paint layer can be matt paint, etc., which reflects weak light, which is conducive to the full use of solar energy; the heat-absorbing particles can be carbon black with irregular shapes and a particle size of 400-800 mesh , The surface of the endothermic particles has multiple edges and corners (that is, it has multi-edge characteristics). Using the multi-edge characteristics of the surface of the endothermic particles, it can fully absorb the sun's radiant energy and convert it into heat in different time periods of the day. Heating the container has high efficiency per unit production capacity.
[0044] Further, the heat-absorbing coating can be formed by coating the matte paint containing the aforementioned heat-absorbing particles on the outer surface of the container. The thickness of the heat-absorbing coating can be 0.1-0.5mm, and the heating effect in this thickness range is good. The unit production efficiency is high.
[0045] The dehumidification heating return air device 2 is a high temperature resistant dehumidifier produced by Hangzhou Gaozhen Electrical Equipment Co., Ltd., which can use the waste heat in the hot moisture discharged from the solar heat collector 1 as the heat source, and use the heat absorption coil to absorb the hot air At the same time, the air is getting drier and drier. The residual heat and dried air are heated again by the radiator coil. The temperature is getting higher and higher. After reaching the set temperature, the bypass solenoid valve allows the refrigerant to bypass. Tube, the multi-source heat pump assembly absorbs the heat of the hot air, thereby achieving high efficiency and energy saving.
[0046] The high temperature resistant dehumidifier can be installed at the end (second end) of the solar heat collection box 1. The high temperature resistant dehumidifier has an exhaust port 21 and a return air port 22. The exhaust port 21 and the return air port 22 are connected to the container. The hot and humid air inside the heat collection box 1 is introduced into the high temperature resistant dehumidifier through the air outlet 21. After being dehumidified and heated, the hot dry air is discharged from the air return opening 22 into the solar heat collection box 1.
[0047] The light-transmitting infrared heat preservation cover 3 is a heat preservation cover that transmits light and can reduce the transmittance of infrared rays, and its shape and material are not strictly limited. The light-transmitting infrared heat preservation cover 3 does not affect the heat collection of the solar heat collection box 1, but also enables the temperature of the solar heat collection box 1 to be dissipated without being affected by air convection. The solar heat collection box 1 heats up quickly, and the heat loss speed Slow, good insulation effect.
[0048] The auxiliary heating system may be, for example, a conventional heating system such as an oil heating system, a gas heating system, an electric heating system, and a steam heating system. The setting of the auxiliary heating system makes the solar heating drying system diversified and more practical.
[0049] In one embodiment, the auxiliary heating system includes a fuel tank 4, a burner 5, an induced draft fan 6 and a heating part. The fuel tank 4, the burner 5 and the induced draft fan 6 are arranged at the end of the solar collector 1 (the second end Ends). The heating part includes a combustion chamber 7 and a heating pipe 8. The heating pipe 8 has an inlet and an outlet. The inlet communicates with the combustion chamber 7 and the outlet communicates with the induced draft fan 6; the burner 5 communicates with the fuel tank 4 and is arranged opposite to the combustion chamber 7.
[0050] In the above-mentioned auxiliary heating system, the burner 5 can eject the fuel and air in the fuel tank 4 in a certain manner and mix and burn them in the combustion chamber 7; the hot gas generated by the combustion enters from the inlet of the heating pipe 8, thereby collecting solar energy. The hot box 1 is heated, and the cold air formed after heating is discharged from the outlet of the heating pipe 8 through the induced draft fan 6. Further, the heating pipe 8 includes two connected turning-back heating tubes, namely a first turning-back heating tube 81 and a second turning-back heating tube 82. The two turning-back heating tubes are respectively arranged on the inner walls of both sides of the container. This arrangement has a large heating area and can make the heat distribution in the solar heat collection box 1 more even.
[0051] Further, the above-mentioned solar heating and drying system further includes a controller (not shown), and the controller is respectively electrically connected with the dehumidification heating and air return device 2 and the auxiliary heating system. The above-mentioned solar heating and drying system may also include detection components for detecting drying parameters, such as temperature sensors, humidity sensors, etc., so as to better control the temperature and humidity inside the solar heat collection box 1, which is beneficial to Ensure the drying effect of materials.
[0052] The above-mentioned solar heating and drying system has a simple structure. It mainly uses solar energy for heating, has low energy consumption, and has high unit production efficiency. Standard containers are used as solar heat collection boxes, which are convenient for mobile use in the field or on-board; dehumidification heating and air return device 2 The water vapor in the hot and humid air inside the solar heat collection box 1 can be discharged in time and the heat in the hot and humid air can be recycled, which is highly efficient and energy-saving;
[0053] The light-transmitting infrared heat preservation cover 3 can avoid heat loss, so that the solar heat collection box 1 heats up quickly, the heat loss speed is slow, and the heat preservation effect is good; the auxiliary heating system can assist heating in the case of insufficient sunlight, the heating method of the entire drying system Diverse and practical.
