Abstract
The mechanism for composing air temperature field in a room is explained with new concepts. Here, all heat factors in an air-conditioned room are treated simply as real or virtual heat sources and sinks. The technique of numerical simulation is used to derive those new concepts. The scales for assessing the contribution of each heat source or sink to air temperature distribution in a room are defined as CRI (Contribution Ratio of Indoor climate) 1, 2, 3 and 4. CRI 1, 2 and 3 quantitatively indicate the capacity of one single heat source in a room for diffusion and how much that heat source will raise the temperature at a point in question. CRI 4 indicates the age of heat, the time scale of heat arrival at a point from one single heat source. The scales are applied to some example as illustrations.
