Browse Prior Art Database

Drain Back Solar System

IP.com Disclosure Number: IPCOM000050632D
Original Publication Date: 1982-Nov-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Van Winkle, HE: AUTHOR

Abstract

This article describes a drain back type solar heating system. The system includes a main storage tank and a supplementary storage tank. The capacity of the supplementary storage tank is substantially less than that of the main storage tank. The supplementary storage tank is disposed below the level of the solar-collecting panel and is coupled by a pump to the panel. A float control unit is connected between the supplementary tank and the main storage tank and controls the amount of fluid that flows from the main storage tank into the supplementary tank.

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Drain Back Solar System

This article describes a drain back type solar heating system. The system includes a main storage tank and a supplementary storage tank. The capacity of the supplementary storage tank is substantially less than that of the main storage tank. The supplementary storage tank is disposed below the level of the solar- collecting panel and is coupled by a pump to the panel. A float control unit is connected between the supplementary tank and the main storage tank and controls the amount of fluid that flows from the main storage tank into the supplementary tank.

With reference to the figure, the solar system includes a solar collector unit. The solar-collector unit is disposed at an angle relative to the sun's rays (not shown). The height of the solar-collecting unit is substantially lower than conventional types of solar-collecting systems. A liquid conduit 10 interconnects the solar-collecting unit to a pump. The pump is connected to a supplementary receiving tank 12 by conduit 14. The solar-collector unit operates in two modes: the so-called "drain-back mode" and the so-called "collector mode." When the collector unit is running in the "collector mode," fluid flows from receiving tank 12 in the direction shown by arrow 16. When the unit is operating in the "drain-back mode," fluid flows from the collector unit in the direction shown by arrow 18 back into the receiving tank. The receiving tank has two operating levels: the so-called operating l...