To evaluate the contribution of solar water heaters to the"dual carbon"strategy,reduce de-pendence on fossil fuels,and promote the optimization and transformation of energy structure,ther-mal performance testing and analysis of the actual working conditions of all-glass vacuum tube solar water heaters in Jiaxing area have been conducted.The results show that under actual working condi-tions,ambient temperature and irradiation are important factors affecting the daily useful heat of solar water heaters.The annual energy savings for 78 and 75 tube spacing are 451.87 kWh/(m2·a)and 467.46 kWh/(m2·a),respectively,and the annual CO2 emission reductions are 338.9 kg/(m2·a)and 350.6 kg/(m2·a),respectively.It is estimated that the CO2 emission reduction from solar ther-mal utilization in 2021 will account for about 12.6％of the total carbon emissions in China.
关键词
双碳/全玻璃真空管型太阳能热水器/实际使用工况/节能量/减排量
Key words
Dual carbon/All-glass vacuum tube solar water heater/Actual operating conditions/Energy savings/Emission reduction
维普
万方数据