Study Of Solar Water Heating System Integeated With High-rise Building For The Large Scale Application

In China, high-rise buildings are found everywhere in the urban districts. How to make full use of the vertical facades of these buildings to capture the most solar radiation and get integration with solar water heating system(SWHS) plays an important role in the technology promotion and large scale application.This article analyzed the status and development trend on building-integrated solar energy and the application in high-rise buildings. Further the design problems of high-rise building integrated SWHS were pointed out, and corresponding practicable technology strategys and programmes were proposed. Considering the characteristic of Tianjin Typical Year Meteorological Data and high-rise buildings, the text used the Sunlight Analysis to make a preliminary evaluation on solar thermal energy under different collector installation position, proving the possibility of solar energy on high-rise buildings, provided a basis for engineering application.Based on TRNSYS(Transient System Simulation) software platform, a simulation model of forced circulation separated type SWHS was established, in which the incident radiation, the incident scattering, the wind speed and other factors were considered. An experiment on a forced circulation separated type SWHS was carried out, and the simulation validity was proved by the experimental data. An enhanced TRNSYS simulation model has been developed to optimize the control strategy with the dynamic changes in the load of hot water. Different factors such as the arrangement and area of solar collector, tank capacity, the location of the auxiliary heater and daily hot water consumption pattern on the whole-year transient performance of SWHS were studied using the enhanced model for Tianjin climate to capture the most annual solar radiation.From the economic and environmental point of view, this paper presented the evaluation processe and method of SHWS applying on high-rise building. At last, the economic and environmental eficiency were measured with an engineering project under long time operating conditions.