本文件适用于铁路车辆HVAC（暖通空调）系统能耗的计算、测量和/或验证。 根据ISO 19659-2中规定的热舒适性要求，考虑到ISO 19659-1第？条中详述的同一类客运铁路车辆，对HVAC系统能耗进行模拟、计算、测量和验证4: —？1类（如主线、城际、长途、高速）； —？第2类（如郊区、通勤、区域）； —？3类（如城市、轻轨、有轨电车、地铁/地铁）。 本文件仅涵盖乘客区暖通空调系统。驾驶室HVAC系统不包括在内，但可采用类似方式处理。

This document is applicable to the calculation, measurement and/or verification of energy consumption of railway vehicle HVAC (heating, ventilation and air-conditioning) systems. The HVAC system energy consumption is simulated, calculated, measured and validated in accordance with the requirements of thermal comfort defined in ISO 19659-2, considering the same category of passenger railway vehicles as detailed in ISO 19659-2, Clause 4: —    Category 1 (e.g. main line, intercity, long distance, high speed); —    Category 2 (e.g. suburban, commuter, regional); —    Category 3 (e.g. urban, LRV, tram, metro/subway). This document only covers the passenger area HVAC systems. Driver’s cab HVAC systems are excluded but could be treated in a similar way.