Chilled-Warm-Hot Water Fountain Machines:

Energy Conservation Labeling Program Requirements for Chilled-Warm-Hot Water Fountain Machines
(Promulgated and in effect June 1, 2005)
1. In accordance with the test method listed in Article 4 below, for the chilled-warm-hot water fountain machines, the ambient temperature, hot water system storage capacity (Vh), cold water system storage capacity (Vc), 24-hr temperature-maintaining power consumption (Wd), hot water system average temperature (T1), and chilled water system average temperature (T2) shall be measured. The measured results shall be used to calculate the water fountain's heat retention

Q (Equation 1), energy efficiency value EFtest (Equation 2), and baseline energy efficiency value EFbase (Equation 3), and that the calculated EFtest shall be no less than EFbase
Q = 4.18 x Vh x (T1 – 25) + 4.18 x Vc x (25 – T2) (1)
EFtest = Q / (3600 x Wd ) (2)
EFbase = Q / (1.1156 x Q + 3770) (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 power consumption Wd shall be stated in the product catalog;
c. The energy efficiency value EFtest has no unit, and the unit for Wd shall be kWh. Both values shall be calculated to two decimal places with the third decimal place rounded-off.

3. Prior to conducting the testing and measurements, the products shall meet the requirements of CNS 3910-C4129 (Drinking Water Supply Machines) and other relevant product labeling requirements concerning drinking water supply machines.

4. The testing of product performance shall be conducted in accordance with CNS-3910, and with the addition of the following tests in order to determine the product’s energy efficiency.
a. ambient temperature: The ambient temperature shall be maintained at 25 ± 1℃; the distance between the wall, and the sides, front and top of the product shall be at least 300 mm; and the distance between the wall and the back side shall be at least 65 mm (as shown in Figure 1 below). The ambient temperature measurement point A shall be located at the one-half height of the product and 150 mm away from the side of the product. The ground temperature and ambient temperature shall have a temperature difference of at least 2℃. The product shall be placed on a platform with a height of at least 100 mm.
b. Inlet water temperature: The water temperature at the inlet shall be 25 ± 1℃.
c. Rated voltage and frequency: The rated voltage shall be 110V or 220V single-phase AC at rated frequency of 60Hz.
d. Power consumption test: All the water storage containers in the drinking water machine shall be filled with water. The hot water storage container shall reach the highest temperature (heating element off) and the chilled-water storage container shall reach the lowest temperature (chiller off). Then measure the power consumption in maintaining the highest and lowest temperatures for 24 hours (called 24-hr temperature-maintaining power consumption). The power supply shall be at rated voltages of 110V ± 2% or 220V ± 1%. The unit for power consumption is kWh.
e. Hot water system average temperature and chilled water system average temperature (T2) test: Place temperature sensor into hot water container and chilled water container respectively at the positions of 1/4, 1/2 and 3/4 heights. In accordance with the requirements of the above Article 3, the hot water storage container shall reach the highest temperature (heating element off) and the chilled-water storage container shall reach the lowest temperature (chiller off). Then measure the power consumption in maintaining the highest and lowest temperatures for 24 hours (called 24-hr temperature-maintaining power consumption), while continuously monitoring the water temperatures in the hot water system and the chilled water system. The hot water system average temperature is the average of the measured hot water temperatures during the 24-hour continuous operation period; while the chilled water system average temperature is the average of the measured hot water temperatures during the 24-hour continuous operation period. The uncertainty in measuring average hot water temperature shall be within ± 0.5℃.
f. water storage container capacity test: The capacity of the water storage container shall be measured in accordance with the Section 4.2.6 of CNS-3910. If measurement can not be made according to Section 4.2.6 of CNS-3910, the capacity may be measured as the amount of water discharged from the water outlet, or as the added weight of the water container after filling up with water.
g. The energy efficiency for the drinking water supply machine is defined as follows and expressed as Energy Efficiency (EE).

EE = (heat content retained by hot water in the hot water storage + heat content retained by chilled-water in chilled-water container) / 24-hr temperature maintaining power consumption = [4.18 x Vh x (average hot water temperature in hot water container -25) + 4.18 x Vc x ( 25- average chilled-water temperature in chilled-water container)] / (3600 x Wd) (1)
heat content retained by hot water in the hot water storage container = 4.18 x Vh x (average hot water temperature in hot water container - 25)
heat content retained by chilled water in the chilled water storage container = 4.18 x Vc x ( 25- average chilled-water temperature in chilled-water container)]
Vh : the capacity of hot water storage container in liter;
Vc : the capacity of chilled water storage container in liter;
The unit for the average water temperature is℃
The 24-hour temperature maintaining power consumption is 3600 Wd (kJ), while Wd is the 24-hour temperature maintaining power consumption in unit of kWh.

Lately update: 2010/04/22 11:20:00