Study on annual energy-saving characteristics of a natural ventilated photovoltaic double skin facade in cold region
The annual building energy consumption of insulation glass units,natural ventilated double skin facade integrated with clear glass(CG-DSF)and double skin facade integrated with photovoltaic glass(PV-DSF)in cold region were analyzed.Numerical simulations were implemented by Energyplus software to obtain the annual energy consumption for cooling,heating and lighting purposes,the photovoltaic generating capacity,as well as the energy-saving potential of PV-DSF.Firstly,the reliability of heat transfer model,ventilation model,power generation model and illumination model were verified by experimental measurement results.Then,by using the natural ventilation function of DSF,reasonable ventilation modes were set to obtain the annual energy consumption conditions.The results show that compared with insulation glass units,CG-DSF and PV-DSF can both reduce the annual energy consumption of air conditioning in buildings,and the energy consumption of the two DSFs is only about 60%and 52%of that of insulation glass units,respectively.PV-DSF coupled with cadmium telluride semitransparent photovoltaic glass significantly reduces the energy consumption for cooling in summer,and its annual photovoltaic power generation is about 50.68 kW·h/m2.Although the energy consumption of PV-DSF for heating and lighting has increased,the total annual net energy consumption is the lowest,which is 46%lower than that of insulation glass units,showing excellent building energy-saving potential.
double skin facadephotovoltaic glassnatural ventilationannual energy consumptionbuilding energy efficiency
NETL
NSTL
万方数据
