DX part load

[osakaz]

I have some 16 years old DX units 5-15 tons range. i need to get their part load electrical consumption. i have the EER (8.2) and IPLV (10.6). the selection and the e-catalogue software don't suport their models anymore.
What to do?

 

[ChrisConley]

Let me be the first to say... why not measure their part load consumption?

 

[osakaz]

i am trying to calculate the savings from fixing economizer and new programmable thermostats. so need to know their electrical consumptions during part load.

and modeling unfortunately is not an option this time.

 

[DrRTU]

Give the attached Honeywell economizer program a try. Since the units are 16 years old you may want to look at replacement of the complete systems.

http://customer.honeywell.com/Busin...and+Control+Ventilation+Savings-Estimator.htm

 

[osakaz]

sure going to try it
i also got the copeland's energy calculator which helped me with the part load.

Thanks DrRTU