| 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 and a thermally compatible absorber plate bonded to the frame. The use of thermally compatible collector components serves to minimize bondline strains due to uneven thermal expansion of the materials. Reliable and continuous operation of the system is, therefore, possible over a wide range of temperature conditions. Diagonally opposite standoff regions provide even liquid flow across the collector surface regardless of which way the collector is turned. 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.
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