Francesco, I have not used that sheet J, and am not completely sure where it came from other than a reputable source � probably the E+ site. It appears to be IP units; MBH for capacity (BTU/hr x 1000) and F for temperature. E+ expects the curve to be applied to SI values, so you may need to check and confirm that it’s correct in that aspect. James V Dirkes II, PE, BEMP, LEED AP From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] Thank you very much, Jim and Julien! A question for Jim: in your spreadsheet the cooling capacity is in ton, isn't it? Are all the other numbers in SI units? __._,_.___ Posted by: Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> Primary EnergyPlus support is found at: http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx The primary EnergyPlus web site is found at: http://www.energyplus.gov The group web site is: http://groups.yahoo.com/group/EnergyPlus_Support/ Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button. __,_._,___ |