储水式电热水器能效评价方法探讨

Approach on energy efficiency evaluation method of electric storage water heaters

本文提出将热水能效比和剩余热水输出率作为家用储水式电热水器的能效指标,替代现行的24h固有能耗和热水输出率,新能效指标体系采用40℃混合热水输出量作为能效指标计算的基本参数。新能效指标与用户使用经济性和使用体验联系更为直接,易于被用户理解;由于采用产出/投入比的能源经济性指标,具有普遍适用性,易于与其他类型的热水器进行运行经济性比较;检测过程为无损检测,测量点较少,检测操作较为简单。

The sanitary water energy efficiency ratio and residual sanitary water output rate as the energy efficiency index of the household electric storage water heater, to replace the existing 24h inherent energy consumption and sanitary water output rate, the basic parameters of the new energy efficiency index system with 40℃ mixed output hot water and input cool water is calculated as the energy efficiency index. The use of economy and experience more direct contact with the user of new energy efficiency index, easily understood by users; because of the economic indicators of energy output / input ratio, universal, easy to compare the economic operation and other types of water heaters; testing process for nondestructive testing, measurement point less detection is relatively simple operation.