Solar Energy Collection MSD /11/08 Solar Collector Concepts Flat Plate Collectors First Gen Type Various Serpentine Patterns Coiled Tube Evacuated Tube Collector Parabolic Mirror and Pipe Flat Plate Collectors Evacuated Tube Collectors Parabolic Mirror Collection Collector Concept Selection Matrix Flow Control Automotive Thermostat (First Gen) Residential radiator thermostatic valves too expensive Multiple Thermostats Manual Valve Electronic on/off Density Thermal Orifice Bimetallic strip Flow Control Concept Selection Matrix Heat Recovery First Gen (flat plate integrated heat exchange) Coiled tube in tube Soldered Tube Straight tube in tube Heat Recovery Concept Selection Matrix Concepts Dual-Valve Convective Loop Serpentine w/Pipe within Pipe Spiral Black Tube Collector w/ Braided HX Flat Plate w/Integrated HX and Dual Valve Batch System: Reused Plastic Bottles Final Concept Selection