Hi ALL,
Our project has a newly purchased conversion type water dispenser. From the manufacturer cut sheet, there are three rated power values, 2000 W (making hot water), 245 W (making cold water), and 1.33 kWh/day (standby). Which one should we use to calculate EAp2 Energy Star percentage?
Best Regards,
Waleed AlGhamdi
Sustainability EnablerEskew+Dumez+Ripple
18 thumbs up
August 26, 2019 - 6:32 pm
At a glance, it looks like neither of these can be used solely in the calc. The first two are units of power and the last is energy (power x time). An assumption will need to be made for the schedule in hours then multiplied by power in W to get kWh of energy. I haven't seen this modeled in the past, but I'm sure you can find a reasonable schedule, perhaps check COMNET.
I'm not sure what you mean by Energy Star percentage, but the current specs for energy star water coolers are here https://www.energystar.gov/ia/partners/product_specs/program_reqs/ES_WC_V2_Spec.pdf
The test procedure that has the assumptions are here https://www.energystar.gov/sites/default/files/specs//Water%20Coolers%20Final%20Test%20Method%20%28Rev%20%20May%202013%29.pdf
Looks like you might need to do some calcs and conversions. Or, you can just call up the vendor and ask their techincal support team for help. Sales reps won't provide much help with this.