指出，随着建筑物的通风和冷却气流供应温度和流速降低到55华氏度的常规值以下，室内热环境的考虑因素，如充分的热舒适性和通风流速变得越来越重要。综述了冷空气射流的特性，特别是应用于冷空气分配系统的射流动量和射流分离。建立了一个简单的冷空气射流分离模型，该模型与射流抛掷方程相结合。还包括通风和热舒适方面的考虑。指出理想模型的结果表明，对于相同的冷却能力，如果射流动量保持不变，常规和冷空气射流的射流抛掷和分离点将相同。关键词:空气射流，低温，空气，模型，计算，通风，热舒适。 引文:研讨会，ASHRAE交易1993，第99卷，pt。1.

States that as a building's ventilation and cooling airflow supply temperature and flow rate are reduced below the conventional value of 55degF, indoor thermal environment considerations such as adequate thermal comfort and ventilation flow rate become increasingly important. Reviews the behaviour of cold air jets - specifically jet momentum and jet separation for application to cold-air distribution systems. Develops a simple model of cold air jet separation which is combined with jet throw equations. Also includes ventilation and thermal comfort considerations. States that the results from the ideal model indicate that for the same cooling capacity, the jet throw and separation point will be the same for both conventional and cold-air jets if the jet momentum is held constant.KEYWORDS: Air jets, low temperature, air, models, calculating, ventilation, thermal comfort.