Costs and maintenance associated with bus air conditioning continue to pose major problems. Five projects funded by UMTA show that some of the problems may be resolved. Evaporative cooling has been successfully demonstrated in Denver and Tucson where low humidity climate makes such a system practical. A production model of a rotary screw compressor will be tested in Washington, DC, and Philadelphia because it has fewer moving parts, the potential for greater reliability and lower maintenance requirements. Condenser relocation from within the engine housing to the roof is intended to reduce dirt and debris accumulation on heat-transfer surfaces. Another relocation has been to the rear window area, an arrangement tested successfully in Los Angeles and Miami. Atlanta has replaced dual compressors with a single large compressor which has been found to be more reliable; it is recommended that windows and roof hatches which can be opened by opened be installed if a single-compressor system is adopted.

  • Corporate Authors:

    Urban Mass Transportation Administration

    Office of Bus and Paratransit Systems, 400 7th Street, SW
    Washington, DC  United States  20590
  • Publication Date: 1984

Media Info

  • Features: Figures;
  • Pagination: 11 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00389859
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Oct 30 1984 12:00AM