Research On The Solar Heating Programs Selection And Control Strategy In Site Museum Buildings

Due to historical reasons,multiple sites exist in the suburbs or rural areas,most of the site museums were built in the suburbs or rural areas.These places have no central heating generally.When considering the use of municipal heating network to heat for the site museums,it needs longer heat pipeline.As a result,it must consume large amounts of pipe and huge cycle power,which is conducive to building energy efficiency.Usually site museums were built underground or half underground to meet the protection of ruins.The heat consumption of these buildings is smaller.Most of the current museums use central air-conditioning system for the building heating.The result is a huge heating energy consumption.Today we vigorously promote the construction of a conservation-oriented society,but the site museums show a trend that the total increasing and the scale expanding.Therefore,heating energy consumption of the site museum can not be ignored.From now on,solar heating has been widely used at home and abroad,solar heating for buildings can effectively alleviate the problem of environmental pollution and energy shortages.Currently the application study of solar energy in the construction is mostly on residential buildings and solar resource-rich region in rural areas.The research on solar heating for site museums is seldom studied.So the research on solar heating for site museum buildings has an important practical value.Based on the climatic conditions,the abundant and stability of solar energy resources in Xi'an,taking the ratio of collecting heat and heating load as a technical feasible index to analyze.The result shows when the building roof is completely installed collectors,the ratio is more than 1,explaining that solar heating for the site museum buildings is technical feasibility in Xi'an.On this basis,by using fuzzy comprehensive evaluation,from the technical maturity,security and reliability,ease of maintenance and management,the initial investment and running costs these five angles at two levels(technical aspect and economic aspect)for both active solar heating schemes(solar water heating system and solar air heating system)to evaluate with fuzzy comprehensive evaluation.The result shows,solar air heating system is superior to the solar water heating system.Then the design parameters of the solar heating system above are analyzed and calculated.Including determination of both solar heat collector area and volume of heat accumulator,and selection of heating end and so on.After that,the dynamic heat load of the site museum building was simulated and analyzed,and the operation control strategy of the system was given according to the changing rule of building heat load.The energy saving rate of the solar building was used as the evaluation index of solar energy heating system The results of actual application were analyzed and evaluated.This paper studies the use of solar heating for site museum buildings,taking the solar heating project of Han Chang'an site museum in Shaanxi Province of Xi'an city as an example.The study has not only the technological significance of energy saving,but also practical engineering significance.