Thermal comfort and productivity with task-ambient conditioning system in office

通过主观实验研究了不同类型的任务调节系统对室内人员热舒适性和工作效率的影响。任务调节系统包括两个非等温系统，3DU^+和PEM，和一个等温系统，TU，单独控制。受试者首先参加“练习条件”。然后，他们参与了使用和不使用每个任务系统的条件。使用任务系统时，试验室温度为28℃50%RH，未使用任务系统时，试验室温度为26℃50%RH。在任务调节系统条件下，舒适感觉的平均评分介于舒适(0)和轻微不舒服（-1）之间。男性在-0.4到-0.7之间，女性在-0.3到-0.4之间。这和没有任务系统的情况下是一样的，甚至更好。研究发现，这些系统在提供热舒适方面是有效的。主观症状测试和视疲劳得分在不同条件下男性无差异。在PEM和TU条件下，很大比例的女性表示疲劳。由于这一趋势与加法测试的结果相似，因此从正面排出空气的空调系统可能会影响眼睛，从而影响加法测试的分数。采用任务调节系统（RCU）进行主观实验，探讨不同类型的任务调节系统对室内热舒适性和工作效率的影响。在28℃50%RH条件下，有RCU系统，受试者的舒适感觉大于26℃50%RH条件下，无RCU系统。因此，可以认为RCU在不增加能耗的情况下有效地提供热舒适。

Subjective experiments were conducted to investigate the impact of different types of task conditioning system on occupants with regards to their thermal comfort and productivity in a climate chamber. The task conditioning systems included two non-isothermal systems, 3DU^+ and PEM, and one isothermal system, TU, with individual control. The subjects participated in ‘practice condition' at first. Then they participated in conditions with using each task systems and without using them. The chamber was conditioned at 28℃ 50%RH with using task systems, and 26℃50%RH without using them. Under the condition with the task conditioning systems, the average rating of comfort sensation was between comfortable (0) and slightly uncomfortable (-1). For males it was between -0.4 and -0.7 and for females between -0.3 and -0.4. This was equal to or even better than that in condition with no task system. It was found that these systems were effective in providing thermal comfort. The scores of subjective symptoms tests and asthenopia were not different in males between conditions. A large percentage of females declared weariness in the PEM and TU conditions. Since this is a trend similar to the result of the addition test, air conditioning systems that discharge air from the front may have affected the eyes and thus the scores of the addition test.Subjective experiments with task conditioning system, RCU, were conducted to investigate the impact of different types of task-conditioning system on occupants with regard to their thermal comfort and productivity in a climate chamber. Under the condition of 28℃50%RH with the RCU system, the subjects' comfort sensation were more than equivalent to the condition of 26℃50%RH without RCU. Therefore it could be considered that the RCU was effective in providing thermal comfort without increasing energy consumption.