The purpose of this study is to understand the factor that influenced the heating efficiency of the outward and inward multi-hole gas burner. The flame-hole angle and the distance from flame hole to heating object are chosen as the experimental parameter. The measurement of the flame temperature distribution is carried out on each experimental condition. LPG (Liquefied petroleum gas) is used for the test fuel gas. The compositions of LPG are propane 97.5vol%, butane 0.2vol% and methane + ethylene 2.3vol%. It is clarified that the optimum ranges of the flame-hole angle and the distance from flame hole to heating object. The experimental correlation equation is proposed for the outward and inward multi-flame-hole gas burner by design factors.
It′s extremely hot every summer nationwide or sometimes worldwide, and air conditioning equipment remains essential in our daily life. On the other hand, there is a demand in society for environmental conscious product. This means the use of eco-friendly or green system has been encouraging. In order to achieve a good balance between human health and energy efficiency, a design concept considering the human feeling temperature is drawing attention. Since whole human thermal feeling (thermal sensation) can be judged by whole body human energy balance, the present paper focused on the relationship among regional thermal sensation, regional cooling load, and whole body thermal sensation for expanding and being accurate the thermal comfort study. Consequently, the authors found that cooling sensitivity varied at different body region, regional thermal sensation could be predicted by regional cooling load, and high in thermal sensitivity region effected whole body thermal sensation.