Summer air conditioning system with outdoor air for ventilation and a zero by-pass factor

Summer air conditioning system with outdoor air for ventilation and a zero by-pass factor
Some of the contents of the download links

Air conditioning system

Air conditioning system
Some of the contents of the download links

السبت، 24 أبريل، 2010

Psychrometric chart


Psychrometric chart
A Psychrometric chart graphically represents the thermodynamic properties of moist air। Standard psychrometric charts are bounded by the dry-bulb temperature line (abscissa) and the vapour pressure or humidity ratio (ordinate). The Left Hand Side of the psychrometric chart is bounded by the saturation line. Figure 27.2 shows the schematic of a psychrometric chart. Psychrometric charts are readily available for standard barometric pressure of 101.325 kPa at sea level and for normal temperatures (0-50oC). ASHRAE has also developed psychrometric charts for other temperatures and barometric pressures (for low temperatures: -40 to 10oC, high temperatures 10 to 120oC and very high temperatures 100 to 120oC)






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