Solar reflector for heat pump evaporator

The invention claimed and disclosed herein pertains to heat pumps, and more particularly to methods and apparatus to improve the efficiency of an evaporator in a heat pump. A solar reflector for an evaporator in a heat pump system. The evaporator has heat transfer plates and is located in an outdoor environment. The solar reflector has a curved surface configured to reflect solar radiation to the heat transfer plates of the evaporator. The curved surface can be in the shape of a truncated parabola. The curved surface can also be curved in a dish-like shape defining an upper perimeter and a lower perimeter, and the lower perimeter defines a bottom opening configured to receive the evaporator. The solar reflector can also be made of a plurality of partially overlapping curved surfaces configured to reflect solar radiation to the heat transfer plates of the evaporator. In this case the solar reflector includes a hinge ring, and each of the curved surfaces are hingedly attached to the hinge ring. Preferably the hinge ring defines an opening to receive the evaporator.