农业机械学报2012，Vol.43Issue(8)：141-147,120,8.DOI:10.6041/j.issn.1000-1298.2012.08.026
车外综合温度条件下典型冷藏车厢内热稳定性研究
Thermal Stability of Typical Refrigerated Trucks Compartment under Outdoor Sol-air Temperature Conditions
摘要
Abstract
Considering the factors of direct solar radiation, sky diffuse radiation, ground reflected radiation, outdoor air temperature, and the vehicle speed, compartment outdoor wall surface temperature function with two-order harmonic Fourier series expression was used as a boundary conditions. The effect factors of time lag, decrement, and thermal stability upon four kinds typical refrigerated trucks insulation compartment were analyzed by using combined method of thermal theory analysis and experimental validation. The analysis results show that different compartments insulation materials will cause different of time lag and decrement coefficient which increases with the increasing of the thermal inertia index and heat resistance of compartment- Different driving directions and insulation materials will cause different compartment indoor wall surface temperatures accordance with the sinusoidal variation. The compartment indoor wall surface temperature change with time closes to the compartment inner air temperature. The thermal stability inside compartment is determined by thermal resistance and thermal inertia index of insulation material. The order from the best to the worst is VIP compartment, extruded polystyrene composite compartment, polyurethane thermal insulation compartment and polystyrene insulation composite compartment.关键词
冷藏车厢/热稳定性/辐射强度/综合温度Key words
Refrigerated trucks compartment/ Thermal stability/ Radiation intensity/ Sol-air temperature分类
交通工程引用本文复制引用
李锦,谢如鹤,刘广海,吕宁,刘浩荣..车外综合温度条件下典型冷藏车厢内热稳定性研究[J].农业机械学报,2012,43(8):141-147,120,8.基金项目
国家自然科学基金资助项目(51008087)和韶关市科技计划资助项目(2011CX/K14) （51008087）
