This report summarizes the Phase 1 work done for improved bus air conditioning systems. The system design goals were: (1) improved reliability characteristics; (2) reduced operating (fuel penalty and maintenance) costs; (3) compatibility with various bus requirements, including suitability for retrofitting existing fleets; (4) state-of-the-art suitability for operational service deployment within 24 months; and (5) use of current maintenance and inspection procedures. The program was divided into four tasks: Task (1) Baseline Criteria and Air Conditioning System Specification; Task (2) Alternative Systems Concept Analysis; Task (3) Supporting Engineering; and Task (4) Life-Cycle Cost/Benefit Analysis. This study explores existing bus air conditioning systems; transit property operating experiences are surveyed and analyzed to determine the problems with present systems and the means for eliminating these difficulties; and recommended advanced air conditioning system design is developed which offers improved reliability and reduced operating costs. This system uses a variable-delivery screw compressor, provided with a capacity-modulating temperature control for reduced power consumption. The recommended system also uses a microprocessor-based controller to provide all of the system control functions and a diagnostic capability for improved maintainability.

  • Corporate Authors:

    AiResearch Manufacturing Company

    9851 Sepulveda Boulevard South
    Los Angeles, CA  United States  90045

    Urban Mass Transportation Administration

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Burriss, W L
  • Publication Date: 1980-6

Media Info

  • Pagination: 153 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00326031
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: UMTA-CA-06-0145-80-1Final Rpt., 80-17141
  • Contract Numbers: DOT-UT-90017
  • Files: NTIS, TRIS, USDOT
  • Created Date: Nov 19 1981 12:00AM