A convenient, precise and powerful tool for HVAC&R engineers. This psychrometric chart uses 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).
Psychrometric Chart + Duct Calculator v4.4 shareware version
- Coordinate system of psychrometric chart is updated to dry bulb temperature and enthalpy;
- Add ASHRAE equation support at normal temperature and pressure region, now this psychrometric chart is perfectly consistent with all ASHRAE charts of No.1~7(SI Units) and No.1~5(IP Units);
- Water property calculation is updated to IAPWS-IF97 equation;
- Introduced real gas effect correlation;
- Add functions for grid snap and constant parameter lines at cursor point;
- Add grains/lb(d.a) and psia units in psychrometric chart.
- Corrected some symbol displays for international language.
Psychrometric Chart + Duct Calculator v3.0 shareware version
- Add english(I/P) units support;
- Other than eastern style, new western style chart support added in this version, this meets requirements of people who are customed with western style chart;
- Add angle reference of process line ratio for enthalpy-humidity and sensible-total heat;
- Zoom in, zoom out chart by rolling mouse wheel, and pan chart by pressing middle mouse button and moving mouse;
- Add chart toolbar for easily processing chart copy, export, print, pan, zoom, redraw and style selection;
- Save and load data function for each data input grid, this is convenient and not need to input data every time restart program;
- Option for saving all input data to disk before exit and load them when restarted next time;
- Corrected some bugs.
Psychrometric Chart + Duct Calculator v2.0 shareware version
- Add process points line and mix point calculating, drawing and managing;
- Add wet air point calculating, drawing and converting;
- Add constant specific volume and wet bulb temperature line in chart;
- Add chart line type, width, color, font properties groups edit and managing;
- Add copy(wmf and bmp format), export(Jpg, bmp, wmf, emf format) and print function;
- Add language support;
- Corrected former bugs.
Psychrometric Chart + Duct Calculator v1.2
- Use IFC-67 equation for water/vapor property calculating, and treat air as ideal gas;
- Range can be changed, Mouse move point calculation;
- Calculate once recycle and twice recycle air flow, summer and winter state;
- process line is shown in chart, press UpDown button to see process changing;
- Export wmf format file, can be opened and printed by image browser softwareas ACDSee, IE, smoothly zoomed.
- Air and liquid duct;
- Calculate duct flow resistance, environmental heat exchange, and adiabatic;
- Note: outer coefficient of heat transfer usually is 3~10, >10 when winds.