Thursday, December 29, 2016

TECHSHORE INSPECTION SERVICES : Psychometric Chart


Psychometric chart is a graph which represents a specific condition of a gas, vapour system (such as air and water vapour) which drawn towards temperature (horizontal scale)and absolute humidity (vertical scale);other characteristics of this system such as relative humidity, wet bulb temperature, latent heat of vaporization  are indicated by lines on the chart.
           


Dry bulb temperature which is measured by a thermometer is called dry bulb temperature when the bulb of the thermometer is kept dry.

Wet bulb temperature which is measured by thermometer whose bulb is covered with a wet cloth or wick.
                          

Dew point temperature at which moisture content present in the atmosphere at a particular temperature becomes saturated. Above this particular temperature the moisture will stay in the air (atmosphere).
                                   

Specific volume is the volume occupied by the unit weight of air.
                           

Humidity ratio is the ratio of the water vapour present the mass of dry air.
                                 

Relative humidity is the ratio of actual amount of moisture present in one unit volume of dry air at a certain temperature to the amount of moisture needed to saturate it at that temperature is called relative humidity.


                                       


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Location: 36/977A Kattunilath, Lissie Hospital Road, Kochi, Kerala 682018, India

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