carrier psychrometric chart sea level pdf

Carrier psychrometric chart sea level pdf tv#

1791 Tullie Circle, NE Atlanta, GA 30329 ASHRAE ASHRAE is a registered registered trademark of the American American Society of Heating, Refrigeratin Refrigerating g and Air-Condit Air-Conditioning ioning Engineers, Engineers, Inc. Starting from the temperature it is possible to obtain the value of the molar wet volume by raising the line of the specific volume of dry air a vertical segment up to the saturated volume curve, and then dividing this segment by a percentage equal to the molar fraction x of water.Understanding Psychrometrics Third Edition Donald P.

the straight line relating to the specific volume of dry air.

In addition to the aforementioned curves, the following can be represented on the Carrier diagram: Starting from the point ( T V, Y) it is also possible to determine the dew point temperature (Tdew) by drawing the horizontal from the point until it meets the saturation line. In the case of the air-water system, the adiabatic saturation temperature is equal to wet bulb temperature TW.

Carrier psychrometric chart sea level pdf tv#

If the system under consideration is in a condition of temperature TV e absolute humidity Y (and relative humidity uR), represented by the point (TV, Y), in order to reach equilibrium, in adiabatic conditions the point in question will move upwards following the cooling line, until it reaches the point (TS, YS) having adiabatic saturation temperature TS and humidity YS, which is on the adiabatic saturation line. Of these lines only the point of intersection with the saturation line is equilibrium, while the other points correspond to conditions of instability. In the unsaturated air zone, curves with constant humidity and oblique lines, called 'adiabatic cooling lines, which are at constant adiabatic saturation temperature, are drawn on the diagram. The abscissa axis of the diagram corresponds to the null value of humidity, therefore it corresponds to the conditions of dry air. The so-called can be found in the psychrometric chart saturation line, which separates the fog area (in which the system consists of air saturated with water and liquid water dispersed in it, in the form of very minute drops or aerosols) from the area consisting of unsaturated air (in which the system consists of a mixture of air and water vapor). It is possible to use the diagram to graphically estimate the characteristic quantities of the mixture following a thermodynamic transformation, provided that the transformation is isobaric and at the reference pressure of the diagram used. The versatility of the Carrier diagram lies in the fact that it is possible to determine all the physical quantities of interest from the knowledge of 3 independent quantities (or state variables), one of which is the pressure, set for each specific diagram. We can consider the diagram as a graphical representation of the equations of state. The Carrier diagram (also called psychrometric diagram or Grosvenor diagram) is used for determining the properties of a constant pressure water-air mixture. The program is accessed by clicking on the green button with white writing at the bottom of the page - FAQ Carrier's psychrometric chartĬarrier psychrometric diagram for psychrometric calculations (humid air calculation) provided for educational use only.