Measurement of the thermal environment

Many working enviroiunents are imcomfortable owing to excessive heat or cold in one form or another some can be so extreme that they lead to heat or cold stress occurring in the workers. When investigating these environments, it is important to take into accoimt the rate of work and the type of clothing of the worker as these affect the amount of heat the body is producing and losing. 

To obtain a correct assessment of a thermal environment, four parameters require to be measured together  

1 The Wet Bulb Globe Temperature index (WBGT) can be calculated from the formula  

WBGT = 0.7 X natural wet bulb temperature + 0.3 x globe temperature 

2 Gorrected Effective Temperature index (GET) can be obtained from a chart and can take into accoxmt work rate and clothing. 

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