Showing papers on "Thermal comfort published in 1976"

Radiant heat from lights, and its effect on thermal comfort:

Abstract: The radiation environment of a person can be described in terms analogous to those used in lighting: with mean radiant temperature (m.r.t.), equivalent to scalar illumination, and vector radiant temperature (v.r.t.), equivalent to illumination vector. The m.r.t. affects the warmth of environment; the v.r.t. affects the perceived asymmetry. The thermal radiation from lights increases the m.r.t. and v.r.t. Measurements on several lamp types have shown that the thermal radiation may be predicted from illuminance and lamp type. The radiation field in a building is modified by the structure: if the lamps are installed below a non-ventilated ceiling, the m.r.t. and v.r.t. will be increased; if cool air is introduced through the ceiling, the thermal radiation will be reduced. Some measurements in buildings are quoted.

Energy conservation: minimizing space energy requirements subject to thermal comfort conditions

Abstract: The purpose of this study was to determine those combinations of environmental variables within an enclosed environment which minimize energy consumption. This is accomplished by placing the restriction of thermal comfort for human occupants on the allowable range of the variables and by investigating the effects of the environmental variables on energy consumption. The main variables, air temperature, humidity (water vapor pressure), and air velocity, are selected for an environmental control system such that the thermal comfort constraint is satisfied and the energy requirements are minimized.