| 摘要 |
A solar heating system for preheating water which may be used in conjunction with an existing hot water heater. The use of potable water as the heating fluid renders the use of a heat exchanger unit unnecessary. A novel collector unit is disclosed which includes a molded plastic collector frame with integral fluid passageway. The durable unitized collector design eliminates the need for frame members, additional fluid conduits, specially manufactured collector plates and multiple collector sealing layers. The invention provides an exceptionally low cost, material intensive solar heating system. Pumping systems are provided to facilitate collector operation in conjunction with high or low pressure preheating systems.
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