Application Study On Solar-semiconductor Refrigeration Device In Low Temperature Grain Storage

Grain issue has always been a great importance issue to our nation, and it is alsofundamentality for national prosperity. It is obviously that storage is much more significantin grain issue, during the grain storage procedure, the elements influencing the grain mostare temperature, moisture, insect pests and micro-organism, these elements make grainstore stability and safety vary, causing quality loss. Low temperature preservation willconsiderably reduce the loss in storage, which has been proved by long-term practices andstudies of experts. At present, mechanical ventilation has been widely used in grainpreservation, but power-waist and noise are these alike methods, disadvantages. Solarpower is an inexhaustible green power source, and semiconductor refrigeration elementsgets advantages of small, light, noiseless and no leakage. This thesis gives out a design forsemiconductor refrigeration device powered by solar photovoltaic power generation. Byheat conduct between granary and designed device, sustainable low temperaturepreservation has been realized which will be a certain reference for low temperature grainpreservation. The following works carried out have been accomplished in the thesis.1. Introduce the principle of solar photovoltaic power generation and semiconductorrefrigeration.2. Introduce entire work system of solar power generation and semiconductorrefrigeration device, including constitution of solar battery, storage battery, protects circuitand semiconductor refrigeration elements. The experiment result to the system has beencalculated.3. Construct the solar power semiconductor refrigeration elements applied in lowtemperature grain preservation model, and simulated.