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      BUILDING INTERIOR TUBES AND NONIMAGING REFLECTORS (BITNR) STUDIES

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          ABSTRACT

          Building Interior Tubes and Nonimaging Reflectors (BITNR) solar thermal concentrators for mid-temperature applications in snow and dust regions, previously titled BIETR now include non-evacuated tube-receivers. A nonpublic walk-in solar collector space has fixed receiver-tubes with matching involute (rounded W) reflectors forming target-rectangles for augmenting large CPC troughs and relaxed tracking E&W ‘wing’ reflectors with a glass or solid polycarbonate building envelope collector cover. Reported is a BITNR reflector ‘wings’ tracker invention by George Helmholz and proof-of-concept development by university undergraduate engineering students. Discussed are: building types, structure, and construction and reflector materials for global applications. BITNR architectural feasibility studies with air and water-steam systems include: small wood frame structures, two-car garages, house size demonstration, long-span atriums, large concourses, towers, additions, and verification-test facilities. Schematic studies indicate integrated solar thermal mid-temperature technologies with building-size nonimaging CPC reflectors are main organizing factors for building design and site planning. BITNR/BIETR undergraduate student mechanical and structural engineering semester projects at the University of Wisconsin-Platteville are reported. A BITNR R&D project proposal is outlined which includes: a greenhouse test facility, evaluation of test stands, and development of a computer simulation design aid for architects.

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          Most cited references 100

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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1943-4618
                1552-6100
                Spring 2020
                14 July 2020
                : 15
                : 2
                : 213-248
                Author notes

                1. P.O. Box 14, Dodgeville, WI 53533, e-mail: joelhgoodman3@ 123456hotmail.com

                Article
                jgb.15.2.213
                10.3992/1943-4618.15.2.213

                Volumes 1-10 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                Page count
                Pages: 36
                Product
                Categories
                NEW DIRECTIONS IN TEACHING AND RESEARCH

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