22-31 Water Supply Plan
22-31 There is mention of summer time evaporative cooling usage at a rate of 4,600 gallons per hour (gph). There is limited mention of the duration for such an event (seldom during evenings, etc.), but no defined duration per event.
- How many hours per day would evaporative cooling usage occur?
- How many days per year on average would evaporative cooling usage occur?
RESPONSE 22-31
The 4,600 gallon per hour was a conservative estimate based on the ambient conditions of 90F degrees with a 45% relative humidity. As temperature and humidity can change throughout the day, it is difficult to predict; however, typical consumption will be at a lower rate. On average, Invenergy expects the evaporative cooling usage would be 4-6 hours per day.
As temperature and humidity can change throughout the day, it is difficult to predict. It is expected that evaporative cooling would only be used during the summer months (part of June through part of September).