Abstract: A mounting system for mounting photovoltaic panels on a support structure. The mounting system comprises photovoltaic panel frames in which the photovoltaic panels are mounted, panel support rails, and mounting brackets or cross beams for supporting the panel support rails. The panel frames have inwardly extending panel frame extensions on their back side. The panel support rails are mounted on the support structure with either pivoting brackets or cross beams. In either case, the support rails have pairs of stationary clamps and movable clamps with clamp lips that engage the panel frame extensions of the panel frames.

Abstract: A mounting system for mounting photovoltaic panels on a support structure. The mounting system comprises photovoltaic panel frames in which the photovoltaic panels are mounted, panel support rails, and mounting brackets or cross beams for supporting the panel support rails. The panel frames have inwardly extending panel frame extensions on their back side. The panel support rails are mounted on the support structure with either pivoting brackets or cross beams. In either case, the support rails have pairs of stationary clamps and movable clamps with clamp lips that engage the panel frame extensions of the panel frames.

Abstract: A mounting system for mounting photovoltaic panels on a support structure. The mounting system comprises photovoltaic panel frames in which the photovoltaic panels are mounted, panel support rails, and mounting brackets or cross beams for supporting the panel support rails. The panel frames have inwardly extending panel frame extensions on their back side. The panel support rails are mounted on the support structure with either pivoting brackets or cross beams. In either case, the support rails have pairs of stationary clamps and movable clamps with clamp lips that engage the panel frame extensions of the panel frames.

Abstract: A solar photovoltaic water heating system is disclosed having a photovoltaic solar panel array, a storage tank containing water to be heated, a resistance heating element in the water to be heated. The water heating system matches the load resistance of the resistance heating element to the power that is available from the photovoltaic solar panel array in order to maximum energy transferred to the water in the storage tank.

Abstract: A mounting system for mounting photovoltaic panels on a support structure. The mounting system comprises photovoltaic panel frames in which the photovoltaic panels are mounted, panel support rails, and mounting brackets or cross beams for supporting the panel support rails. The panel frames have inwardly extending panel frame extensions on their back side. The panel support rails are mounted on the support structure with either pivoting brackets or cross beams. In either case, the support rails have pairs of stationary clamps and movable clamps with clamp lips that engage the panel frame extensions of the panel frames.

Abstract: A solar water heater includes a drainback unit with a drainback reservoir and an anti-airlock conduit for assuring that working fluid in the solar collectors is consistently drained from the solar collectors into a drainback reservoir once circulation the working fluid in the solar collectors has stopped. The drainback unit also provides rapid startup by positioning the heat exchanger outside of the drainback reservoir and by positioning the inlet and outlet of drainback reservoir in close proximity to each other.

Abstract: A mounting system for mounting photovoltaic panels on a support structure. The mounting system comprises photovoltaic panel frames in which the photovoltaic panels are mounted, panel support rails, and mounting brackets or cross beams for supporting the panel support rails. The panel frames have inwardly extending panel frame extensions on their back side. The panel support rails are mounted on the support structure with either pivoting brackets or cross beams. In either case, the support rails have pairs of stationary clamps and movable clamps with clamp lips that engage the panel frame extensions of the panel frames.