One thing I am a little worried about is that if your coil's valve has been closed for a long time, the inlet temperature is probably going to be about the same as the return, which could mean having a false 0°C ∆T. Wouldn't it be better to use the supply temperature from the heating plant instead? Especially since it has a bacnet interface
We want to address the Delta T at the coil so inlet temperature closest to the coil is best. Delta T management is performed on an operational basis requiring a minimum flow rate to be activated. If a valve was closed, it would typically mean no heat exchange is occurring and no minimum flow rate is provided.
Hi Yokelee - We are unsure what you mean with your question. If you provide us with your country location we can direct you to the correct technical support team who can help answer your questions.
If coil is designed for 10 deg C , and if you want increase the DeltaT say 12 degC then you have to reduce the flow across the coil . But in this case space temperature can’t be achieved.
Customers are funny. They will fall all over themselves to buy into this valve, in the hopes it will save money on power bills, but they won't spend a plug nickel to periodically change air filters and tighten/replace blower belts and clean coils.
One thing I am a little worried about is that if your coil's valve has been closed for a long time, the inlet temperature is probably going to be about the same as the return, which could mean having a false 0°C ∆T. Wouldn't it be better to use the supply temperature from the heating plant instead? Especially since it has a bacnet interface
We want to address the Delta T at the coil so inlet temperature closest to the coil is best. Delta T management is performed on an operational basis requiring a minimum flow rate to be activated. If a valve was closed, it would typically mean no heat exchange is occurring and no minimum flow rate is provided.
does it mean resetting higher supply air temp for higher delta t chill water?
Hi Yokelee - We are unsure what you mean with your question. If you provide us with your country location we can direct you to the correct technical support team who can help answer your questions.
If coil is designed for 10 deg C , and if you want increase the DeltaT say 12 degC then you have to reduce the flow across the coil . But in this case space temperature can’t be achieved.
Entire concept is in logical , can you prove it thru equations?.
but chiller has to work harder for higher lift with high delta t.
Customers are funny. They will fall all over themselves to buy into this valve, in the hopes it will save money on power bills, but they won't spend a plug nickel to periodically change air filters and tighten/replace blower belts and clean coils.
I see it often in service... Neglecting maintenance