# US 4,393,862 A · Solar air duct

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- Number: US 4,393,862 A
- Document ID: US4393862A
- Status: Granted
- Kind: A
- Application number: 06/193,581
- Filed: 1980-10-14
- Granted: 1983-07-19
- Earliest claimed: 1980-10-14
- Assignees: The United States of America as represented by the Secretary of Agriculture
- Inventors: Douglas A. Wilke
- Web page: https://patentgrep.com/patent/US4393862A

## CPC

- F24S 10/50: the working fluids being conveyed between plates
- F24S 80/30: Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
- Y02E 10/44: Heat exchange systems
- Y10S 126/906: Connecting plural solar collectors as a unit
- F24S: SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS (for producing mechanical power from solar energy F03G6/00)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A ready-to-assemble kit for a solar air heater is provided including a heating chamber composed of a set of side-by-side elongated, hollow, straight ducts having openings at opposite ends thereof; wherein a manifold is placed at each end of the set, wherein each manifold is composed of an open-topped compartment and overlying lid, wherein the open-topped compartment includes a protruding lip adjacent the top, wherein the lip and overlying lid define an opening therebetween through which the set of ducts horizontally extend into the manifold. In the assembled kit, the heater and manifolds are disposed below a framed-in glazing which transmits solar energy to the heater.

## Claims

### Claim 1

In an apparatus for heating air with solar energy, wherein said air is heated in a chamber disposed below a glazing and surrounded by glazing support structure, the improvement wherein said apparatus comprises a kit capable of on-site assembly upon a planar-shaped base, and wherein said kit includes:
a. at least one prefabricated heating chamber to be placed upon said base, said chamber consisting essentially of a set of elongated, hollow, flat, straight, sheet-metal ducts, which lie flat, side-by-side, above said base when said kit is assembled; wherein each of said ducts is closed except for duct openings at each end thereof; and
b. a first manifold chamber separate and distinct from said heating chamber to be disposed at one end of said set of ducts when said kit is assembled; a second manifold chamber separate and distinct from said heating chamber to be disposed at the other end of said set of ducts; wherein said first manifold chamber vertically extends from above said base down through a hole in said base adjacent said one end of said ducts when said kit is assembled; wherein said second manifold chamber vertically extends from above said base down through a hole in said base adjacent said other end of said set of ducts when said kit is assembled; wherein said first manifold chamber includes an aperture in its side through which said set of ducts horizontally extend when kit is assembled; wherein said second manifold chamber includes an aperture in its side through which said set of ducts horizontally extend when said kit is assembled; wherein said first and second manifold chambers each include an open-topped compartment and a lid therefor; wherein said compartment includes a protruding lip segment adjacent its open top; wherein said lid overlies said open top and lip segment when said kit is assembled; wherein said lip and overlying lid define said aperture in said manifolds through which the open ends of said ducts extend when said kit is assembled and wherein said heating chamber and manifolds are detached from said glazing and glazing support when said kit is assembled.

### Claim 2 (depends on 1)

The apparatus of claim 1 wherein each of said hollow ducts includes an elongated rib member disposed with said ducts, extending essentially the entire length thereof, down the center of said duct, to give structural support thereto, wherein said rib member divides said hollow duct into parallel, side-by-side, elongated air channels; wherein said rib member includes a plurality of baffles extending transversely into each of said air channels; wherein said baffles are an integral part of said rib member, and are formed by partially cutting out pieces of said rib member and bending same perpendicular to said member.