Integration Study On Solar Hot Air Heating System With Barrack Buildings

The distribution of the barrack buildings is small,scattered and far.Usually there is only electricity power supply.As for heating,either a high energy consumption and high cost of electric heating or the conventional energy coal or diesel which has transport difficulties is used.In order to save energy and reduce emission,the paper combining with the characteristics of use and management of the barrack buildings in the view of full-use of solar energy,designed a reasonable construction scheme.Meanwhile,improved the OM solar air heating system and made an integrate design of barrack building and solar air heating system to solve the heating problem of the troops,achieving an energy-saving and environmental protection effect.Firstly,a method was put forward to evaluate indoor thermal environment of full-solar-use building: based on the passive solar building indoor heating design temperature 13?,put forward the concept of Tolerance Temperature,made 29?the temperature limit and count the hours of natural room temperature which are located at the tolerance temperature range.Put forward Saving Rate Indicator of Building's Accumulative Total Heating Consumption in Heating Season,Increasing Rate Indicator of Annual Temperature Tolerance Interval Cumulative Hours and comprehensive indicator of the fomer two indicators which are convenient for.comparison of different schemes.Then according to the functional requirements of barrack buildings,put forward a preliminary design of full-solar-use barrack buildings and analyzed the total heating consumption and natural room temperature distribution with DeST-h of each scheme in different orientation and different window-wall ratio.Therefore,selected the Direct Benefit Window,North Entrance scheme with optimal window-wall ratio as a full-solar-use building design.Thirdly,according to the theory of solar radiation,used Studio Visual 2010 and C# to creat the solar radiation calculation program which can provide theoretical basis and data support for the selection and determination of design parameters.Fourthly,in order to improve the effective utilization of solar energy,the improvement was put forward on the basis of the OM solar heating system changing from All Fresh Air Heating Mode to Returning Air+Fresh Air Heating Mode.Through the analysis of the measured running data,the new mode can increase the useful heat efficiency of system by 33%.At last,the paper proposed the method which is more suitable for determining the solar fraction of the improved system.Solar Fraction program was compiled to calculate the building's daily,monthly heating consumption and heating season's consumption.According to the calculating result of the program,the economic analysis method of annual value was used to calculate the cost of traditional heating system in the troops and solar air heating system with different design solar fraction.Then a brief analysis on the environmental protection benefit of the improved solar air heating system was introduced.