It is important to understand psychological and physiological responses of occupants who seated in a chair in order to shape a comfortable indoor official environment. So it is needed to find out optimal seated conditions. The purpose of this study was to explore optimal condition of seat air conditioning control based on psychological or subjective responses (perceived temperature and comfort sensation) and physiological responses (heartrate variability; HRV). To do this, experimental conditions were designed by the difference of indoor temperature and seat air conditioning temperature. In the experiment 1, seven experimental conditions were designed with one control condition which was not used seat air conditioning system, and six experimental conditions which the difference of indoor temperature and seat air conditioning temperature (-1℃～-6℃). In the experiment 2, four experimental conditions were designed with one control condition and three experimental conditions (-3℃～-5℃). In addition, participants’ psychological or subjective response was measured by CSV (comfort sensation vote) and PTS (perceived temperature sensitivity) as a psychological or subjective response, and heartrate variability was measured as a physiological response. As a result, in the experiment 1, it was reported that the optimal conditions of seat air conditioning control based on participants’ psychological or subjective comfort were from -3℃ to -5℃ experimental conditions. In addition, in the experiment 2, it was reported that the optimal condition of seat air conditioning control based on participants’ physiological comfort was -4℃ experimental condition. These results suggested that seat air conditioning could affected to comfort sensation of occupants in an appropriate range, rather than unconditionally.

1. Introduction
 2. Experiment 1
  2.1 Participants
  2.2 Experimental Environments
  2.3 Experimental Stimulus
  2.4 Experimental Conditions
  2.5 Experimental Procedures
  2.6 Results and Discussion
 3. Experiment 2
  3.1 Participants
  3.2 Experimenatal Environment, Stimulus andApparatus
  3.3 Experimental Conditions
  3.4 Experimental Procedures
  3.5 Results and Discussion
 4. Conclusion
  4.1 Psychological Responses
  4.2 Physiological Responses
 Acknowledgement
 References

• 김보성(동의대학교 철학상담․심리학과) | Boseong Kim
• 곽승현(한밭대학교 산업경영공학과) | Seung Hyun Kwak
• 서상혁(한밭대학교 산업경영공학과) | Sang Hyeok Seo
• 민병찬(한밭대학교 산업경영공학과) | Byung Chan Min Corresponding Author