It has been acknowledged that as outdoor temperature and relative humidity increase past threshold values, so do older people mortality and morbidity rates. Similarly, there exist indoor conditions of temperature (T_amb) and relative humidity (RH) that would pose a health-risk to older people when they are exposed to these conditions for extended periods. However, these indoor conditions need to be identified to set protective measures for this vulnerable population. The aim of this work is to develop heat stress indices for older people similar to the standard effective temperature (SET) for a wide range of indoor conditions, activity levels and clothing insulation. A robust and validated bioheat model for older people was used to predict thermal responses and deduce the limits of T_amb and RH that would present a heat-related health risk when the core temperature exceeds 38 °C, or percentage of body water loss exceeds 2%, or when skin wettedness and SET exceed given thresholds. The results were consistent with published experimental data. At relatively cool ambient conditions, T_amb < 21 °C, older people have higher mean skin temperatures and feel cooler than younger people. At T_amb ≥ 25 °C, older people have lower mean skin temperatures and SET values become greater than younger ones, indicating that older people would rate their indoor conditions more stressful than younger people.

人们已经知道，随着室外温度和相对湿度的增加超过阈值，老年人的死亡率和发病率也会增加。同样，存在温度（室内条件牛逼_AMB）和相对湿度（RH），当它们暴露在这些条件下长时间会造成健康风险，以老年人。但是，需要确定这些室内条件，以便为这一弱势群体设置保护措施。这项工作的目的是为老年人制定与标准有效温度（SET），适用于各种室内条件，活动水平和衣物隔热。使用健壮且经过验证的老年人生物热模型来预测热反应，并推导出当核心温度超过38°C或人体水分流失百分比超过2时，T _amb和RH的极限会带来与热相关的健康风险。百分比，或当皮肤湿润度和SET超过给定阈值时。结果与公开的实验数据一致。在T _amb  <21°C的相对凉爽的环境条件下，老年人的平均皮肤温度更高，并且比年轻人感觉凉爽。在牛逼_AMB  ≥25℃，老年人具有较低的平均表面温度和SET值变得比年轻人更大，这表明老年人对室内条件的评价要比年轻人更高。