1.1 本试验方法包括根据系统能量平衡、对设备、罩或替换空气配置的操作或设计变化的参数评估，通过测量和计算设备能量消耗、消耗能量和食物能量，确定设备到空间的热增益。 1.2 以英寸-磅单位表示的数值应视为标准值。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ===意义和用途====== 5.1 空间热增益- 该测试方法确定了从发动机罩/电器系统到空间的热增益。 注2: 为了在空调空间中保持恒定温度，该热量增益必须与空间冷却相匹配。然后，以吨为单位的空间显冷负荷等于以Btu/h为单位的热增益除以每吨冷却12000 Btu/h（3.412 W）的转换系数。设备热增益数据可用于确定空调系统的尺寸。负荷计算程序的详细信息可在ASHRAE中找到，参见参考 ( 1. ) 和Ref ( 2. ) 5. .加热、通风、空调（HVAC）和排气系统设计人员可以使用从不同流速下的热增益到测试空间的相关冷负荷计算以及其他信息，以实现节能- 保守的综合厨房通风系统设计。 5.2 参数研究: 5.2.1 该试验方法也可用于对发动机罩、电器和替换空气系统的替代配置进行参数研究。一般而言，这些研究是通过保持除感兴趣变量外的所有配置和操作变量不变来进行的。因此，该试验方法可用于评估以下各项: 5.2.1.1 各种电器的整体系统性能，同时保持发动机罩和更换空气系统特性不变。 5.2.2 整个发动机罩或单个发动机罩的特性，如端板，可随设备和更换空气常数而变化。 5.2.3 更换空气的特性，如补充空气的位置、方向和体积，可以随设备和发动机罩变量的变化而变化。

1.1 This test method covers the determination of appliance heat gain to space derived from the measurement and calculation of appliance energy consumption, energy exhausted, and energy to food, based on a system energy balance, parametric evaluation of operational or design variations in appliances, hoods, or replacement air configurations. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Heat Gain to Space— This test method determines the heat gain to the space from a hood/appliance system. Note 2: To maintain a constant temperature in the conditioned space, this heat gain must be matched by space cooling. The space sensible cooling load, in tons, then equals the heat gain in Btu/h divided by the conversion factor of 12 000 Btu/h (3.412 W) per ton of cooling. Appliance heat gain data can be used for sizing air conditioning systems. Details of load calculation procedures can be found in ASHRAE, see Ref ( 1 ) and Ref ( 2 ) 5 . The calculation of associated cooling loads from heat gains to the test space at various flow rates can be used along with other information by heating, ventilation, air conditioning (HVAC), and exhaust system designers to achieve energy-conservative, integrated kitchen ventilation system designs. 5.2 Parametric Studies: 5.2.1 This test method also can be used to conduct parametric studies of alternative configurations of hoods, appliances, and replacement air systems. In general, these studies are conducted by holding constant all configuration and operational variables except the variable of interest. This test method, therefore, can be used to evaluate the following: 5.2.1.1 The overall system performance with various appliances, while holding the hood and replacement air system characteristics constant. 5.2.2 Entire hoods or characteristics of a single hood, such as end panels, can be varied with appliances and replacement air constant. 5.2.3 Replacement air characteristics, such as makeup air location, direction, and volume, can be varied with constant appliance and hood variables.