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National Testing Calibration & Inspection LTD (NTCL)


Temperature is a measuring term used to understand the hotness or coldness of a substance or a system. It is the outcome of heat energy. Generally expressed in 0C or 0F. But internationally it is expressed in Kelvin (K).

Maintaining temperature in the workplace is essential for the “Thermal Comfort” of workers which ultimately affects the overall efficiency of productivity. Thermal comfort describes a person’s state of mind in terms of whether they feel too hot or too cold. Striking a balance in workplace temperature to keep all employees satisfied is one of the most notoriously difficult tasks of management system. A range of factors including gender, clothing and metabolic rate all influence the way in which a person reacts to temperature.

Effect of heat in Human Perspective: Some demerits of heat or temperature balance distortion are –

  • Headache, dizziness, or fainting
  • Weakness and wet skin
  • Irritability or confusion
  • Thirst, nausea, or vomiting


“Humidity” refers to the presence of water vapor in the atmosphere. It is measured in either relative terms (relative humidity) or absolute terms (dew point). Humidity directly relates to system temperature and surrounding condition. Comfort largely depends on humidity.

Effect of Humidity in Human Perspective: Some bad effects due to overexposure to humidity are:

  • Dehydration, Fatigue & Muscle cramps
  • Heat exhaustion & Fainting
  • Heat stroke
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