| With people’s pursuit of high-quality life,building energy consumption is also increasing.The distributed energy system satisfies the energy cascade utilization,can connect the local energy supply and demand,and is an efficient energy system.The PV/T system converts solar energy into electric energy and heat energy,and the wind turbine heating system uses wind energy to generate heat.The distributed energy system formed by the combination of the two can convert solar and wind energy into heat and electricity to meet the local building load.Firstly,establish the theoretical models of PV/T system,wind turbine and compressor respectively,and study the operating characteristics of the distributed energy system under different working conditions.Propose a new type of PV/T collector,and use star ccm+to optimize its design.The results show that when the number of ribs is 9,the partition is 6mm,and the I-type flow channel with a distance of 14mm between the partition and the inlet is the optimal flow channel.Secondly,study the operating characteristics of the compressor,the core component of the wind turbine heating system,and use SOCRG and Pumplinx to study the performance of the compressor.Analyze the relationship between its evaporation temperature,condensation temperature,shaft power,and refrigerant flow.The greater the speed of the compressor is,the higher the evaporation temperature is;the lower the condensing temperature is,the stronger the heating capacity of the compressor is.Finally,analyze the practicability and feasibility of the new distributed energy system.De ST software was used to simulate the hourly heat load of 3 villas with heating area of 497.51 m~2 in Zhangjiakou.The average output power of the wind turbine is about62.9 kW;the average heating capacity is 184.45 kW;the photovoltaic power generation power is 127.66 kW;the daily heat supply is about 1.59×10~4 MJ and the power generation is about 1.28×10~3 kW·h,meet the building load.Figure 41;Table 5;Reference 52... |
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