Night setback calculation

[Brian2903]

Hi there, I'm asked to work on a spreadsheet to calculate the savings on AC night setback during summer. What would be the best method I should use instead of "1% savings per 1F setback".

Thanks in advance.

 

[imok2]

Try this:

http://www.alliantenergy.com/docs/groups/public/documents/pub/p010792.hcsp

 

[willard3]

The website makes many, many assumptions about building construction, orientation, climate and etc.

Wrong assumptions make wrong conclusions......

 

[DonPhillips]

There is modeling software out there where you may be able to run some simulations and create some data for your spreadsheet. I use products from Elite Software, try

http://www.elitesoft.com

Don Phillips

http://worthingtonengineering.com

 

[MintJulep]

The energy saved in any period of time is:

BTU = UA[(Tout-Tin)-setback]*time

If time is an hour, and you have hourly temperature bin data, you're done.