GB/T 19933.4-2014
ActiveEarth-Earth-moving machinery―Operator enclosure environment―Part 4: Heating, ventilation and air conditioning (HVAC) test method and performance
土方机械 司机室环境 第4部分：采暖、换气和空调（HVAC）的试验方法和性能
Application Summary AI generated
This standard specifies the test methods and performance criteria for heating, ventilation, and air conditioning (HVAC) systems in the operator enclosures of earth-moving machinery. It is applied during the design validation and type testing of construction equipment such as excavators, bulldozers, and loaders to ensure operator comfort and safety under various climatic conditions. The standard is used by manufacturers and testing laboratories to verify that HVAC systems meet required thermal and air quality performance levels.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.