Abstract
A greenhouse heating mode was proposed in this paper in order to reduce energy consumption and increase the efficiency of heating system for greenhouse. Considering experimental greenhouse practical operating conditions and various environmental factors, a warm air heating system, with heat source of biomass boilers, end heat abstractor of fan coils, was designed and some winter heating experiments was conducted. With the CFD method, the modelling of thermal environment inside the greenhouse in winter night was realized, temperature variation and distribution was simulated by STAR-CCM+. The simulation results were compared with experimental temperatures at the key positions in the greenhouse, and indicated that temperature errors of the monitoring points were less than 2K, relative error less than 8%, calculated root-mean-square error was 0.47K. Thus the validity of proposed model was certified.
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