Warm-Hot Drinking Water Dispensers:

Warm-Hot Water Dispensers
(Promulgated and in effect June 4, 2004)
1. Based on the stipulated test method for warm-hot water dispensers, the ambient temperature, hot water system storage capacity V, 24-hr temperature-maintaining power consumption Wd, and hot water system average temperature Tw shall be measured in order to determine the energy efficiency for Energy Label qualified hot/warm water dispenser products. The measured results shall be used to calculate the equivalent capacity conversion factor K (Equation 1), hot water system equivalent internal capacity V x K, and energy factor EF measured (Equation 2). V x K can then be substituted into Equation 3 to calculate EF2004 standard , and that the calculated EFtest shall be no less than EF2004 standard.
K = (average temperature of hot water system) – ambient temperature / (100- ambient temperature) (1)
EFtest = (hot water system storage capacity x K / (daily electricity consumption) = Effective hot water system internal capacity (L) / daily electricity consumption (kWh/day) (2)
EF2004 standard = V × K / (0.154V×K+0.85) (3)
2.Notes on product labeling:
a. The name and address of the label user shall be clearly displayed on the product or product packaging. If the label user is an agent, the name and address of the product manufacturer shall also be clearly displayed on the product or product packaging;
b. The energy efficiency factor EFtest and daily electricity consumption Wd shall be stated in the product catalog;
c. The units of EFtest and Wd shall be L/(kWh/day) and kWh/day respectively. Both values shall be calculated to two decimal places with the third decimal place rounded-off.


Lately update: 2010/04/22 11:17:00