Apparatus for use in a solar heating system.

摘要

Apparatus for use in a solar heating system comprising a collector, including a housing (50) having spaced ends. Means (72,74) are provided within the housing (50) for defining a cavity capable of holding a heat transfer fluid. A light absorbing surface (82) is presented toward the light transmitting sheet on the housing for absorbing heat. A supply pipe (86) and a drain pipe (86) extend from one end of the housing to the other end and are accessible from each end of the housing (50) The drain pipe (86) communicates with the cavity at a region thereof that is remote from the region at which the supply pipe communicates with the cavity. A manifold (11) includes a pressure pipe (136) having a supply fitting (146), a return pipe (138) alongside the pressure pipe (136) ans a drain fitting (150). First and second coupling means (106,154) are provided for connecting the supply pipe (86) and supply fitting (146) and the drain pipe (86) and drain fitting (150) respectively.