Design Of Heating System Of Modern Greenhouse And Study Of Functioning Simulation

Present condition of heat providing technique and micro-weather research in glasshouse in the domestic and international is briefly narrated in this paper, a small scaled ridge connected model glasshouse is built up, heat transmit characteristic is analyzed, and a dynamic heat transmit model is build up especially. Influence of each physical quantity which transmit heat is analyzed combined on the foundation of simplified glasshouse, steady model and heat balance equation is established, and heat transfer equations is set to carry on to shut and solve. Based on it, combining with heat provide theories of general building and considering condition and glasshouse essence characteristics that glasshouse cultivation need, heat provide system of model glasshouse is designed, and the design compute temperature indoor and outside,heat burden,the system constitution characteristics are elaborated in detail.The research on heat provide system in glasshouse can not get away from micro weather research. The micro weather research can resolve problems such as how and how much the indoor parameter of different type, toward, space enclosing structure of glasshouse is influenced by the outdoor parameter and various physical parameter, calculation of heat burden needed etc. Glasshouse dynamic model is built up in this paper, and a simplification to the glasshouse is carried on on this foundation, heat commutation relationship is analyzied, heat balance equations of steady state model are built up, and carried on shutting to match to solve.This paper makes use of software FLUENT of CFD to carry on imitating designed glasshouse model, verifying the design of accuracy; imitate the glasshouse system that the interior design temperature is according to the general building criterion, from the result of indoor temperature field imitation point out mistake; And imitate glasshouse models under different arrangement of heat provide system, make comparison research, the verification provides necessity that heat pvovide system need set out by the wall.Along with the third"863" national plans promulgated in 2001, facilities agriculture is set to tackle-key item, the modern agriculture occupies a more and...