Overview
System type: PV-direct, drainback solar hot water
Location: Berea, Kentucky
Solar resource: 4.5 average annual peak sun-hours
Production: 240 KWH per month (average)
Percentage of hot water produced annually: 82 percent
Equipment
Collectors: Two AET MSC-32, 4 x 8 ft.
Collector installation: Roof-mounted on south-facing roof, 52-degree tilt angle
Heat exchanger: Custom-built
Heat transfer fluid: Distilled water
Circulation pumps: March 809-BR-HS (collector loop); March 809-BR (exchanger loop)
Pump controller: Klixon fan limit switch
Photovoltaic modules: Two: one BP275, one Shell SP75; 75 W STC, wired in series for 150 W at 24 VDC nominal
Linear current booster: Solar Converters, PPT 12/24-7V
Storage
Solar tanks: Two used; 50 gal. and 40 gal.
Backup water heater: State Select, 47 gal., electric
System performance metering
Thermometer: Three, Honeywell dial (required by KSP for system performance verification)
