Note: Outer coefficient of heat transfer usually 3~10, >10 when winds. Calculate duct flow resistance, environmental heat exchange, and adiabatic effect. Calculate air/liquid and round/rectangle cross section duct Ģ. Chart can be easily printed, copied to clipboard as bmp and wmf format, and exported as bmp, jpg, wmf or emf format.ġ. 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. Chart plot/display setup and management support ġ2. This CD includes all five of ASHRAEs I-P unit psychrometric charts and all seven SI psychrometric charts. Point state convert calculating, and give warning and error message, output point information if point state is OK ġ1. Convenient interface for process and mix point calculating ġ0. Many process point managements, include point pick up, data input grid, point definition select, point add, insert, reduce, delete, move up and down, open and save point list Ĩ. Chart grid snap, aided constant parameter lines across cursor point, middle button pan and mouse wheel zoom for convenient chart operating ħ.

Normal and eastern(China) style support Ħ. Mouse point catch, snap and calculation, output point information and many air properties ĥ. Draw protractor for enthalpy-humidity and sensible-total heat ratio Ĥ. Dry bulb temperature and humidity ratio axis range can be changed easily, the chart generation is automatic and fast ģ. Use IAPWS-IF97 equation for water/vapor properties calculating, and treat moist air as real gas for high precision Ģ. Save and load data function for each data input grid, all input data can be saved for loading next time program started.ġ. This psychrometric chart use ASHRAE equations at normal temperature and pressure region and is perfectly consistent with all ASHRAE charts of No.1~7(SI Units) and No.1~5(IP Units).īoth Metric(SI) and English(IP) units support. A convenient, precise and powerful tool for HVAC&R engineers.

Ashrae psychrometric chart calculator