Energy Conservation Labeling Program Requirements for Chilled-Warm-Hot Water Dispensers (Promulgated and in effect October 20, 2004)
1. Based on the stipulated test method for chilled-warm-hot water dispensers, the ambient temperature, hot water system storage capacity (V1), cold water system storage capacity (V2), 24-hr temperature-maintaining power consumption (Wd), hot water system average temperature (T1), and chilled water system average temperature (T2) shall be measured in order to determine the energy efficiency for Energy Label qualified chilled-warm-hot water dispenser products. The measured results shall be used to calculate equivalent hot water capacity conversion factor K1 (Equation 1), equivalent chilled-water storage capacity K2(Equation 2), chilled-warm-hot water system equivalent internal capacity V1 ×K1 +1/3 ×V2 ×K2 and energy factor EFtest (Equation 3), then the term V1 ×K1 +1/3 ×V2 ×K2 ) can be substituted into Equation 4 to calculate EFbase, and that the calculated EFtest shall be no less than EFbase K1 = (average temperature of hot water system) - ambient temperature / (100- ambient temperature)
(1) K2 = ambient temperature-(average temperature of cold water system) / ambient temperature
(2) EFtest = (cold-warm-hot water system internal capacity (L) / daily electricity consumption (kWh/day)
(3) EFbase = (V1 ×K1+1/3 ×V2 ×K2) / [0.146 ×(V1 ×K1 +1/3 ×V2 ×K2 ) + 1.312]
(4)
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 for EFtest and Wd shall be L/(kWh/day) and kWh/day respectively.