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Title: Stand-alone photovoltaic (PV) powered electrochromic window

A variable transmittance double pane window includes an electrochromic material that has been deposited on one pane of the window in conjunction with an array of photovoltaic cells deposited along an edge of the pane to produce the required electric power necessary to vary the effective transmittance of the window. A battery is placed in a parallel fashion to the array of photovoltaic cells to allow the user the ability to manually override the system when a desired transmittance is desired. 11 figures.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
6625894
Assignee:
Midwest Research Institute, Kansas City, MO (United States) NREL; EDB-95-028960
Patent Number(s):
US 5384653; A
Application Number:
PPN: US 7-972242
Contract Number:
AC02-83CH10093
Resource Relation:
Patent File Date: 6 Nov 1992
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO; Midwest Research Institute
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 14 SOLAR ENERGY; WINDOWS; ELECTROCHROMISM; PHOTOVOLTAIC POWER SUPPLIES; ELECTRIC BATTERIES; LIGHT TRANSMISSION; ELECTRO-OPTICAL EFFECTS; ELECTROCHEMICAL CELLS; ELECTRONIC EQUIPMENT; EQUIPMENT; OPENINGS; POWER SUPPLIES; SOLAR EQUIPMENT 320107* -- Energy Conservation, Consumption, & Utilization-- Building Systems-- (1987-); 140600 -- Solar Energy-- Photovoltaic Power Systems