A12 — Mass Transit (I-P)

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This chapter describes air-conditioning and heating systems
for buses, rail cars, and fixed-guideway vehicles that transport large numbers
of people, often in crowded conditions. Air-conditioning systems for these
vehicles generally use commercial components, but are packaged specifically for
each application, often integral with the styling. Weight, envelope, power
consumption, maintainability, and reliability are important factors. Power
sources may be electrical (ac or dc), engine crankshaft, compressed air, or
hydraulic. These sources are often limited, variable, and interruptible. Characteristics
specific to each application are discussed in the following sections. Design
aspects common to all mass-transit HVAC systems include passenger comfort
(ventilation, thermal comfort, air quality, expectation) and thermal load analysis
(passenger dynamic metabolic rate, solar loading, infiltration, multiple
climates, vehicle velocity, and, in urban applications, rapid interior load
change).
Ventilation and Thermal Comfort
Thermal Load Analysis
Bus Air Conditioning
Rail Car Air Conditioning
Fixed-Guideway Vehicle Air Conditioning
No. of Pages: 9

Citation: 2019 ASHRAE Handbook¿¿¿HVAC Applications

Product Details

Published:

2019

ISBN(s):

9781947192126

Number of Pages:

9

Units of Measure:

Dual

File Size:

1 file , 4 MB

Product Code(s):

D-A122019IP