An Experimental Study on a Bus Air Conditioner to Determine its Conformity to Design and Comfort Conditions

Year 2017, Volume: 3 Issue: 1, 1089 - 1101, 12.12.2016

Şaban Ünal

https://doi.org/10.18186/thermal.277288

Cited By: 6

Abstract

The air conditioning system
for a bus should be selected considering a number of parameters, including
passenger capacity, local climatic conditions, and fuel consumption. It is
possible to determine whether a selected air conditioning system provides
desired performance through testing. This study examines how to verify experimentally
whether a bus air conditioning system meets design and comfort requirements. An
experimental study was conducted on a prototype bus and was tested when driving
on the Adana-Ceyhan highway in Turkey. The internal and external temperatures, evaporator
inlet and outlet temperatures and relative humidity values were measured. Thermal
sensation values were calculated by using empirical correlations given
by ASHRAE. Furthermore, the instantaneous cooling load of the bus was obtained
according to the experimental data, and the results are compared with the calculated
cooling load of the bus by using the radiant time series method
provided by ASHRAE. With respect to the obtained results, the selected air
conditioning system conformed to design and comfort requirements.

Keywords

Refrigeration, HVAC applications, Special/actual topics in heat transfer and thermodynamics

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