Definition of a Healthful and Comfortable Environment

Abstract

Considering our daily life, we spend a great deal of our time in artificial environments, particularly during summer and winter. Therefore, how to optimize indoor environments is of significant importance. This paper deals with the definition of pleasantness and discusses on how to control a healthful and comfortable indoor environment. Pleasantness in thermal environments is also discussed. Six criteria for a healthy residential environment are proposed as follows;(1) prevention of accidents and disasters (2) satisfaction of physiological requirements (3) satisfaction of requirements of living (4) prevention of disease and infection (5) economy in living expenditure and (6) mental and emotional satisfaction.