Specific Volume indicates the space occupied by air It is expressed as a volume

Specific volume indicates the space occupied by air

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Specific Volume : indicates the space occupied by air. It is expressed as a volume per unit weight (m 3 /kg). T erms - Psychrometric Chart

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Psychrometric Chart Wet bulb tem perature
Simplified Psychrometric Chart Dew point,

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Simplified Psychrometric Chart Dew point,
Simplified Psychrometric Chart Dew point,

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How to use Psychrometric Chart? For an air-water vapour mixture at a dry-bulb temperature of 40 o C and relative humidity of 35%, use psychrometric chart to determine the mixture properties: a) Humidity Ratio b) Dew Point c) Wet-Bulb Temperature d) Enthalpy e) Specific Volume Example
Info given T db = 40 o C H R = 35%

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Humidity Ratio = 16 g H 2 O / kg dry air = 0.016 kg H 2 O / kg dry air a.
Dew Point = 21.6 o C b.

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T wb = 26.0 o C c.
Enthalpy = 80 kJ/kg d.

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Specific Volume = 0.91 m 3 /kg e.
If the wet-bulb temperature in a particular room is measured and found to be 20 o C while the dry- bulb temperature is 25 o C, use psychrometric chart to estimate the relative humidity , enthalpy and specific volume of the air in the room. Question

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Various Air-Water Vapour Processes Dry-Bulb Temperature H u m i d i t y R a ti o

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Adiabatic saturation temperature - a temperature at which water converts into air by the process of evaporation adiabatically (no heat loss). Adiabatic Saturator Adiabatic Saturator / Dryer
Simplified Psychrometric Chart Adiabatic Saturation Curve

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Cooling & Dehumidifying Question
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