Comprehensive Evaluation Of Heating System Under Different Part-space And Part-time Thermal Requirement In Hot Summer And Cold Winter Climate Region

Hot summer and cold winter climate region is cold and humid in winter,and the region is classified as non-central heating region.In winter,the indoor thermal environment is poor.With the development of economy and the improvement of people’s living standard,People have a higher demand for indoor thermal environment.Hot summer and cold winter climate region need heating is no doubt.Compared with the severe cold region and cold region,hot summer and cold winter climate region’s residences show a small and large fluctuating heating load,short heating time and so on.More and more residents begin to use different heating methods by themselves,And the comprehensive evaluation of heating system is to find out whether is suitable for a variety of heating demand modes.To comprehensive evaluate the heating system of vast hot summer and cold winter climate region.Firstly,for outdoor weather,to understand the characteristics of internal climate distribution and reflect the energy consumption of winter heating,hot summer and cold winter climate region is climate divided.The HDD18,HHD and SHDG are used as division indexs.Hot summer and cold winter climate region are divided into five regions and nine sub-regions in geographical.Secondly,for indoor heating demand,the heating load calculation method under part-space and part-time thermal requirement is discussed to study the characteristics of part-space and part-time load.Using DeST-h,heating loads in different cities and modes are simulated.Under non-guaranteed rate corresponding to more than 5th daily average temperature,the difference between the steady-state and dynamic heating load calculations is calculated.Furthermore,the curves of heating load versus proportion ofheating space and duration are given out.The dynamic load selection method has been provided.Finally,Combined with climate division and the heating demand model,Water source heat pump,Cogeneration,split air conditioner and gas boiler are evaluated in three aspects: economic,energy consumption and environment.Under different heating demand modes,the suitable heating systems of cities are given out.