Filing Information

Inventor(s)	Dina Katsir · Zvi Finkelstein · Israel Tartakovsky · Irina Tartakovsky ·
Assignee(s)	Acktar Ltd. ·  View assignee updates
Attorney/Agent(s)	Hedman & Costigan, P.C. ·
Primary Examiner	Carl D. Price ·
Application Number	US9343536
Filing date	06/30/1999
Issue date	05/22/2001
Predicted expiration date	06/30/2019
U.S. Classifications	126/701  · 126/907  · 126/714  · 126/702  ·
International Classifications	--
Kind Code	B1
International Classifications	126907 · 126908 · 126705 · 126707 · 126708 · 126569 · 126701 · 126702 · 126703 · 126648 · 126650 ·

Patent Family

Abstract

A solar absorber-reflector is provided for solar heat transmission into a heat absorbing chamber and/or repelling back of solar heat resulting from incident solar radiation. The solar absorber-reflector is also suitable as a passive thermal control material for space applications, and consists of several layers. The minimal configuration includes three basic layers: a layer with a selective solar radiation absorbing surface, having high absorptance of solar radiation and low thermal emittance; a layer with a light-reflecting surface facing a direction opposite to the selective solar radiation absorbing surface; and a polymer film being transparent to visible light and possessing high thermal emittance, with a heat-emitting surface facing the same direction as the light-reflecting surface. The various layers and surfaces of the solar absorber-reflector are oriented, constructed and bonded together, enabling operation in a solar-heating mode, in which the incident solar radiation is absorbed and the resulting solar heat is transmitted into the heat absorbing chamber, or in a light-reflector mode, in which the incident solar radiation is reflected and the resulted solar heat is repelled back and prevented from penetrating into the heat absorbing chamber, or in a mixed mode, in which a part of the solar absorber-reflector operates in a solar-heating mode and a part of the solar-absorber-reflector operates in a light-reflection mode, simultaneously.

Independent Claims | See all claims (18)

1. 1. A solar absorber-reflector for alternately transmitting into a heat absorbing chamber and repelling back solar heat resulting from incident solar radiation, comprising: (a) a first set of layers, including in the following sequence: (i) a layer with a selective solar radiation absorbing surface, for absorbing the solar heat in a solar-heating mode in which said selective solar radiation absorbing surface is exposed to the incident solar radiation; (ii) a layer with a light-reflecting surface facing a reverse direction in relation to said selective solar radiation absorbing surface, for reflecting the solar radiation in a light-reflection mode in which said light-reflecting surface is exposed to the incident solar radiation; and (iii) a layer with a heat-emitting surface facing said reverse direction, for re-emitting the solar heat in said solar-heating mode, and for repelling the solar heat in said light-reflection mode.