Solar photovoltaic photothermal dual-effect Chinese wolfberry fruit drying equipment

Abstract

The invention discloses solar photovoltaic photothermal dual-effect Chinese wolfberry fruit drying equipment. The solar photovoltaic photothermal dual-effect Chinese wolfberry fruit drying equipment comprises a drying room, a solar photothermal heat collector, photovoltaic modules and an electric heater, wherein the drying room is used for allowing Chinese wolfberry fruits to be accommodated; the solar photothermal heat collector is used for realizing photothermal transformation, heating outlet hot air and introducing the hot air into the drying room; the photovoltaic modules are used for realizing photoelectric transformation and storing produced electric energy into an accumulator; and the electric heater is arranged in the drying room, and connected with the accumulator through an inverter to realize electrothermal transformation, so that the Chinese wolfberry fruits are dried. A control switch is used for controlling the heating efficiency of the electric heater through a connecting circuit. The mounting inclination of the solar photothermal heat collector is a degree obtained by subtracting 10 degrees from the latitude of the location of the solar photothermal heat collector, and the mounting inclination of the photovoltaic modules is a degree obtained by subtracting 10 degrees from the latitude of the location of the photovoltaic modules. Through the adoption of the solar photovoltaic photothermal dual-effect Chinese wolfberry fruit drying equipment disclosed by the invention, photoelectric heat collection and photothermal heat collection are complementary on time, so that the solar utilization rate can be increased, and the Chinese wolfberry fruit drying efficiency can be improved.

Description

technical field [0001] The invention relates to drying equipment, in particular to a solar photovoltaic photothermal double-effect drying equipment for wolfberry. Background technique [0002] At present, the production of wolfberry in my country is mainly dried wolfberry, and the drying method is mainly natural drying. Taking Zhongning, the place of production in Ningxia, as an example, the survey shows that more than 90% of the dried fresh goji berries in Zhongning are naturally dried. Natural drying is to spread the wolfberry on the fruit stack or moisture-proof cloth, place it on the road or in the courtyard where the sun can be directly exposed, choose an open and ventilated place, and use the sun to dry it. Generally, summer fruit can be dried in 4-5 days and autumn fruit in 7-9 days. This natural drying method is susceptible to unfavorable factors such as wind and sand, dust, flies, insects and ants, etc., which affects the quality of dried wolfberry fruits, and the...

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Problems solved by technology

[0005] But even if this kind of energy-saving wolfberry drying room is adopted, only the solar generator converts the solar energy into electric energy, and then the electric energy is converted into heat energy through the hot blast stove. There are more energy conversion steps, and the more conversion steps, the more solar energy is consumed in the conversion. In the process, the utilization rate of solar energy is not too high, which in turn affects the drying effect of wolfberry

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