In August 2017, Wheaton College’s Haas Athletic Center leveraged an $89,600 dollar rebate from the Massachusetts Clean Energy Center’s Commercial-Scale Solar Hot Water Program to install solar hot water
collector. The system uses a 1,248 square foot array of SunEarth Flat Plate Collectors, installed by Renewable Energy Systems, to heat the athletic center’s indoor Olympic sized pool and locker room with showers and restrooms that is used by the athletes. The system is expected to save the school $30,000 while reducing carbon and saving up to 3,912 therms per year. Finally, the system’s design allows either the pool or the hot water supply to be heated to different temperatures depending on weather conditions, which will greatly increase energy efficiency.
Energy Metering Results
4 Months later and the system is working beautifully!
Therm production on the system for the past few months is as follows:
Drainback with 360 gallons of DHW storage. Pool is 75' x 40', heated to 82-85 degrees
Two Onicon Revenue Grade meters are used for btu production numbers. One on the DHW side and one on the pool. This data is then sent to the Thermal Grid web based platform via the Resol DL2 datalogger
Project Summary: Location:
Wheaton College - Haas Athletic Center - 26 E Main St, Norton, MA 02766
CombiSystem - Direct Hot Water and Pool Rated Power Output:
39 x 32.8 ft^2= 1279.2 /10.76 *0.7= 83.2 kw Yearly Energy Output (kWh)
= 118.8847583643*3.81*.44*365= 72,744 kwh Solar Collectors:
39 SunEarth Thermoray (TRB-32) Flat Plate Collectors
System Format: Closed Loop Drainback
Storage Capacity: The DHW solar storage is 360 gallons. Olympic sized Swimming Pool is 75'x40' holding 258,750 gallons.
Metering: Two Onicon Revenue Grade meters are used for btu production numbers. One on the DHW side and one on the pool. This data is then sent to the Thermal Grid web based platform via the Resol DL2 datalogger