MRT = A1t1 + A2t2 + A3t3 devided by A1 +A2 + A3 A= Area of element t = Temperature °C
the state of glowing while at a high temperature, caused by electrons in vibration atoms and molecules that are shaken in and out of their stable energy levels, emitting radiant energy in the process. The peak frequency of radiant energy is proportional to the absolute temperature of a heated substance
It means radiant
It is an index of thermal comfort & combines effect of temperature,humidity,velocity of air & mean radiant heat.
there is a relationship they produce temperature.
A globe thermometer is used to measure radiant heat. It bascially consists of a therometer with its bulb or sensor located at the centre of a Matt black copper bulb. Mean radiant temperature can be calculated from this result if air temp and velocity are known.
Examples: thrmometers, pyrometres, thermocouples.