Psychrometric Charts. Easily plot HVAC and other psychrometric processes while out in the field, save the graphs, and then email the graph and results to yourself or clients. Android app no longer available. The program on the CD allows the user to plot typical psychrometric processes and perform the corresponding energy calculations on-screen, without having to first print out the individual charts. The program can output a listing of points and processes in a tabular report with calculated properties and energy values for each.
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Psychrometric Charts. Easily plot HVAC and other psychrometric processes while out in the field, save the graphs, and then email the graph and results to yourself or clients. Android app no longer available.
The program on the CD allows the user to plot typical psychrometric processes and perform the corresponding energy calculations on-screen, without having to first print out the individual charts. The program can output a listing of points and processes in a tabular report with calculated properties and energy values for each. New in the Third Edition:. Learn more. This second edition, available in both I-P and SI units, provides clear understanding of the state of the art in heating and cooling load calculation methods.
Home Technical Resources Bookstore. Share This. As you move your finger around the graph, the psychrometric properties at the top of the screen dynamically update.
In addition, you can double-tap a point to display the point properties and then edit them. Create psychrometric processes by plotting points then connecting them with process lines. Also, create custom labels anywhere on the chart. Email a list of all the points and their properties for a completed chart, along with a PDF of the chart itself. Create an unlimited number of psychrometric chart projects.
Also, you can create templates that you can reuse over and over again. Purchase Understanding Psychrometrics, 3rd ed. Understanding Psychrometrics serves as a lifetime reference manual and basic refresher course for those who use psychrometrics on a recurring basis and provides a four- to six-hour psychrometrics learning module to students; air-conditioning designers; agricultural, food process, and industrial process engineers; meteorologists and others.
Psychrometric chart is one of the chart that is commonly used in solving HVAC problems. The properties of air such as wet bulb temperature, dry bulb temperature, dew point temperature, relative humidity, humidity ratio, specific enthalphy and specific volume are shown on this chart. It is used to determine how these properties vary as the amount of moisture in the air changes. The chart is based on the standard atmospheric pressure of 76mm Hg or 1. Basic Properties of Air. This temperature is located at the horizontal scale of the chart or abscissa. These lines are oblique lines on the chart.
Psychrometrics , psychrometry , and hygrometry are names for the field of engineering concerned with the physical and thermodynamic properties of gas-vapor mixtures. Although the principles of psychrometry apply to any physical system consisting of gas-vapor mixtures, the most common system of interest is the mixture of water vapor and air, because of its application in heating, ventilation, and air-conditioning and meteorology. In human terms, our thermal comfort is in large part a consequence of not just the temperature of the surrounding air, but because we cool ourselves via perspiration the extent to which that air is saturated with water vapor. Many substances are hygroscopic , meaning they attract water, usually in proportion to the relative humidity or above a critical relative humidity. Such substances include cotton, paper, cellulose, other wood products, sugar, calcium oxide burned lime and many chemicals and fertilizers. Industries that use these materials are concerned with relative humidity control in production and storage of such materials. In industrial drying applications, such as drying paper, manufacturers usually try to achieve an optimum between low relative humidity, which increases the drying rate, and energy usage, which decreases as exhaust relative humidity increases.