FPC (Flat Plate Collector): Uses dark, flat metal absorber plates under glass to heat water.ETC (…

FPC (Flat Plate Collector): Uses dark, flat metal absorber plates under glass to heat water.ETC (Evacuated Tube Collector): Features parallel rows of glass vacuum tubes; highly efficient in colder and cloudy conditions.Thermosyphon System: A passive system that relies on natural convection (hot water rising) to circulate water without a pump.Forced Circulation System: An active system that utilizes electric pumps to circulate the fluid.Pressurized / Non-Pressurized: Indicates if the system is designed to handle high municipal water pressure directly.Solar Collector: The roof panel or tube array that absorbs sunlight and transfers heat.Storage Tank: An insulated vessel for holding the heated water.PUF Insulation: Polyurethane Foam used to surround the tank and minimize heat loss overnight.Selective Coating: A specialized finish on the collector tubes designed to maximize solar absorption and prevent heat from escaping.Electric Backup: An auxiliary heating element built into the tank to provide hot water during extended sunless days.