Perforated transparent glazing for heat recovery and solar air heating

a technology of perforated transparent glazing and solar air heating, which is applied in the direction of solar radiation prevention, lighting and heating apparatus, heating types, etc., can solve the problems of negatively affecting the overall thermal efficiency of the system, less efficiency of collectors, etc., and achieves the effect of reducing the thermal resistance (insulation) of the back surface, increasing the heat recovery rate, and increasing the solar thermal efficiency

Inactive Publication Date: 2010-01-07
SOLUTIONS ENERGETIQUES ENERCONCEPT
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]The air in the plenum is heated either by incident solar radiation on the surface of the back panel, which acts as a solar absorber, and/or by heat escaping from the back surface. The device can therefore act as a solar air heater and/or as a heat recovery unit. When used as a solar air heater, the back surface can be of a dark color, so that incident solar radiation passing through the perforated transparent surface is absorbed by the back surface in the form of heat and not reflected back to outer space. However, if the back surface, for any ae

Problems solved by technology

When the glazing becomes very warm, the collectors become less efficient.
However, for unitary flow rates below 5 cfm per square foot, the amount of cool air leach

Method used

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  • Perforated transparent glazing for heat recovery and solar air heating
  • Perforated transparent glazing for heat recovery and solar air heating
  • Perforated transparent glazing for heat recovery and solar air heating

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Embodiment Construction

[0019]FIG. 1 shows a solar air heater 10 provided in the form of an elongated conduit-like enclosure mounted on a base and including a sun facing perforated transparent glazing 12 exposed to the ambient and placed in front of a back panel having an arcuate solar radiation absorber plate 14 applied over an insulation layer 15. The back panel is generally provided in the form of a half-pipe wall covered with the perforated transparent glazing 12. The absorber plate 14 can be of a dark color to maximize solar gain. The perforated glazing 12 can be provided in the form of a perforated polycarbonate or transparent UV-resistant plate. Other transparent polymers could be used as well. The glazing 12 can be rigid or flexible. The perforations can be distributed over the entire surface of the glazing or over only a selected surface area thereof. The density of perforations can be uniform or variable over the glazing surface.

[0020]The perforated glazing 12 and the solar radiation absorber pla...

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PUM

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Abstract

A heat collector comprises a transparent glazing exposed to the ambient. The transparent glazing is spaced from a back surface to define a plenum therewith. A plurality of perforations is defined through the transparent glazing for allowing outside air to flow through the transparent glazing into the plenum and substantially maintain the transparent glazing at the ambient temperature, thereby providing for higher thermal efficiency.

Description

TECHNICAL FIELD[0001]The present application generally relates to a device suited for pre-heating fresh outside air by means of free energy, such as solar energy and / or heat recovery.BACKGROUND ART[0002]Design of traditional glazed solar air heaters generally comprises a glass, polycarbonate or Lexan® transparent cover placed in front of a dark solar absorber. The front transparent cover is provided for minimizing heat losses from the top of the collector. Fresh outside air is traditionally admitted at on end of the collector between the front transparent cover and the solar absorber. The air passes through the collector along fins and absorbs heat from the solar absorber as it travels therealong. Warm or hot air is discharged at the opposite extremity of the collector. As air progresses inside the collector, its temperature rises above ambient. The higher the temperature in the collector is, the higher the heat loss towards the ambient becomes. Heat loss happens through the bottom,...

Claims

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Application Information

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IPC IPC(8): F24J2/22F24S10/50F24S10/55
CPCF24F5/0075F24F2005/0064F24J2/204Y02E10/44F24J2/50Y02B30/92F24J2/42F24S90/00F24S10/503F24S80/56F24S80/58Y02A30/00Y02B30/90
Inventor VACHON, CHRISTIAN
Owner SOLUTIONS ENERGETIQUES ENERCONCEPT
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