Research On Solar Thermal Utilization And Heat Transfer In Small And Medium - Sized Railway Station In

Tibet area has high energy consumption, low combustion efficiency, lack of coal and oil resources.but also rich in solar energy resources and fragile ecological environment in Tibet region. From the perspective of energy utilization and environmental protection, advocating the full use of solar energy resources. But when the solar building depth is large, in the depth direction of the building will appear temperature imbalance. Based on a large space building interior space station based on heat balance technology research topic. Using the method of numerical calculation. Research on solar energy heat utilization of railway waiting hall in Tibet area. The main research contents are as follows:First of all, through the preliminary investigation and research work, establishment of the small and medium sized waiting room calculation model. And by comparing with the experimental data to verify the simulation analysis software EnergyPlus to the solar radiation and the construction of the same space inside the partition simulation accuracy. Based on the literature review, the parameters, lighting, equipment and heat dissipation of the waiting hall model are determined. Then analyzed and determined the influencing factors of heat environment and heat supply of the waiting hall.Secondly, according to the influencing factors, Through the software EnergyPlus simulation waiting room outside the window solar thermal coefficient, window wall ratio, towards, height, and depth of the standard width of a room by a single factor variation on the thermal environment of the waiting hall effect. Based on the result of calculation, analyze the influence of various factors on the thermal environment of the waiting hall. To provide the basis for the value of multiple factor analysis.Thirdly, according to the calculation results of single variable analysis, determining factors of analysis and the level of each factor. The effects of various factors on the average thermal load and the potential of the internal thermal power transmission in the waiting room are studied by means of orthogonal experiment. Suggestions for energy saving design of medium and small sized waiting rooms. And evaluation of the potential of the heat transmission in the waiting room.Finally, a waiting room model is used to calculate and analyze the circulating air volume in the heat transmission of the waiting room in Lhasa area. The system form of thermal power delivery system is proposed. The calculation and analysis of the heat supply effect of the heat transfer system is carried out by the computational fluid dynamics (CFD) software. The control mode of the thermal power transmission system is calculated and analyzed by using the simulation software of the building. Compared with the energy consumption of the waiting room before and after the thermal power delivery system, the energy saving rate of the waiting room is calculated.