Abstract
ABSTRACT A PROPERLY designed cab for agricultural machines should provide safety for the operator, noise control and environmental control. Design criteria and procedures for structural adequacy and noise con-trol are generally known and used in the industry. Presently only limited information is available for deter-mining the cab temperatures, hu-midity, air velocity and air distribu-tion needed to provide a comfortable environment for the operator. The purpose of this study was to determine comfort level criteria for tractor cabs based on the subjective response of male occupants. Specific objectives were: 1 Establish the relationship be-tween comfort of the cab occupant and cab effective temperature. 2 Establish the relationship be-tween comfort of the cab occupant and cab wet globe temperature. 3 Evaluate effects of temperature differential between cab environment and outside ambient temperature on comfort. 4 Compare the findings, where appropriate, with existing ASHRAE data.
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