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 nonpubli...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.展开更多
文摘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.
