Downloads

• Online flow engineering calculators
  Super online calculators for flow and hydronics. Includes system curve wizard, variable speed pumping wizard and a whole lot of other calculators.
  Click here

• Psychrometer chart + Duct calculator 1.1
  Free download
  Click herel

• Alnor HVAC Handbook on performance Measurements
  A Practical Guide to Performance Measurements in Mechanical Heating, Ventilating and Air Conditioning Systems.
  Click here

• Mega downloads of psychrometric charts and psychrometric software!
  Download dynamic psychrometric charts of Heatcraft, York, Carrier, Lennox, Marlo, and ClimateCraft.
  Click here

• Extended range psychrometric chart
  An extended range psychrometric chart from 20 deg f to 150 deg F in pdf format.
  (Right click, and "save as" to save the chart.)
  Click here
  

• Belt sizer
  A useful belt sizer.
  Click here

• Load calculation and pipe pressure drop spreadsheet applications.
  Two very interesting, and well-written spreadsheet applications in xls format.
  
  The first one is a load calculation spreadsheet, based on the Residential Loads Calculation Procedure published in ASHRAE Document GRP158 published in approximately 1980. Data Entry is indicated in Cyan (color). Please read the disclaimer. This application may prove similar to the E-20 format currently in use, and may inspire you to prepare your own calculator based on a similar format. Click here
  
  The other spreadsheet application is a Piping Pressure Drop Calculator, also written in xls. The source is not known, so maybe the constants should be checked before using it. Click here
  
  Spreadsheets are highly under-estimated applications and these two examples show how much more can be achieved by exploiting the capabilities of spreadsheets.