Operation Optimization Of Solar Distributed Heating System With Supplementary Burner

Tibet enviroment is really harsh and the climate is very cold.Heating in winter is an important issue that needs to be solved immediately.Solar energy resource in this area is rich.Using solar energy as the main heat source for heating is the most scientific way to solve the winter heating problem.The office building is taken as an example,the solar heating system with refueling is taken as the research object.The goal of the paper is to analyze the sunshine change rules and characteristics according to the characteristics of the heating quality.Then use the optimization results of the system to built the experimental platform and analyze the operating characteristics.Firstly,the matching characteristics of heating area and solar panel collector are studied by theoretical analysis.Based on the climatic conditions and geographical location,the variation law of temperature was analyzed,and the heating load,lighting area and installation angle of plate collector were determined.Secondly,according to the results of matching characteristics,the setup of system and operation mode are optimized,and the system experimental platform is built.Finally,the operating parameters of the system and the solar guarantee rate of the system is analyzed.According to the research results,the building heating index is 75.74 W/m²,solar total radiation is increased dramatically every day from 9:00 to 11:00.Between 13:00 and 14:00,it can reache the maximum and change solwly.When the weather is clear,the sunshine duration of solar radiation intensity greater than 800W/m² in about 6 hours.The best installation angle of the collector's is 38°of the heating system.According to the experimental results,when solar energy is used as a single heat source for heating,the daytime indoor temperature is maintained at about 20?for about 7 hours.During a heating period,the quantity of standard coal saved by the heating system is 15693.6 kg,the CO₂ emission reduction is 40410.54 kg,and the SO₂ emission reduction is 313.87 kg.It can save 11255.85 m³ of natural gas and 50201 yuan of gas cost.The results of operation can provide theoretical and data support for the optimal design and operation control of the distributed solar heating system with supplementary combustion in this area,and built a solid foundation for the popularization of this technology in urban areas of Tibet.Figure 48;Table 29;Reference 60.