Research On Heating Mode Of Ultra-low Energy Grassland Dwellings In Western Inner Mongolia Based On Optimal Matching Of Economy And Multi-energy

The outdoor temperature in western Inner Mongolia is relatively low and cold in winter,so the heating cycle in this area lasts a long time.The main heating methods are traditional methods such as Kang,earth heating,and stoves.The main fuel is fossil energy,which is burned in large quantities,resulting in poor indoor environment quality and seriously affecting the health of grassland dwellers.The solar energy and wind energy resources in western Inner Mongolia are relatively abundant and can be used for heating of grassland dwellings.However,the utilization rate of solar energy and wind energy is relatively low.Indoor environmental quality,while reducing fossil energy consumption,to achieve energy structure optimization.First of all,this article investigates the situation of the residents,the enclosure structure and the heating mode of the grassland dwellings in western Inner Mongolia.On this basis,combined with the actual situation of grassland dwellings,TRNSYS software was used to build the building model and simulate the traditional heating system of Kang.Secondly,according to the climate characteristics of western Inner Mongolia,TRNSYS software was used to build an additional sunlight room heating system,a wind energy heating system,a municipal power grid,and a Kang and hot water heating system.According to the logical relationship and the order of use of each module,the TRNSYS model under the multi-energy optimization and matching of the ultra-low energy grassland residential heating system in western Inner Mongolia was obtained.Finally,on the basis of the above research,the multi-energy optimal matching of the ultra-low energy grassland residential heating system in western Inner Mongolia was studied.The research results show that the total heat consumption of the building after adding the additional sunlight room is 1 295.60kWh,and the heat consumption index is17.64kWh/m~2,which meets the requirements of ultra-low energy consumption buildings.The energy consumption of heating is analyzed.The proportions of solar heating,wind heating,municipal grid heating,and Kang heating are 81.91%,8.13%,5.98%,and 3.98%respectively,and the proportion of solar and wind heating Above 90%.The multi-energy optimized matching heating scheme reduces the primary energy by 10 458.98kWh,reduces the electricity price by 4,392.78 yuan,reduces the standard coal by 1,499.46kg,and reduces the raw coal by 2,100.09kg.In summary,the multi-energy optimized matching heating system can be applied to grassland dwellings in western Inner Mongolia,helping to achieve the goal of ultra-low-energy grassland dwellings to achieve energy conservation goals,and ultimately achieve improved renewable energy utilization,improved indoor environment,saving heating funds,The purpose of optimizing the energy structure.