THE GLASS GREENHOUSE IN THE SEVERE COLD AREA RETROFITTED WITH ACTIVE AND PASSIVE ENERGY SAVING TECHNOLOGY
Due to the large heat loss of the walls,glass greenhouses often have high energy consumption.Active pho-tovoltaic power generation and passive envelope structure energy-saving retrofit are proposed for the Venlo-type glass greenhouse in severe cold areas.The energy consumption,carbon reduction,and payback period are compared within the two methods for the optimal one.The results show that the Venlo-type PV greenhouse with a three-layer glass and a 9mm krypton gas air layer(CgⅢ)is the best energy-saving retrofit case,which save 130MWh of energy consumption per year,contributing to the promotion of glass greenhouses in severe cold areas.
photovoltaic power generationenclosure structureenergy saving ratecarbon reductionpayback period
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