Did you ever wonder what can cause a control valve to hunt? Poor valve authority cancels out the equal percentage characteristic and therefore the linear transfer of power through a heating or cooling coil.
In this video we discuss the relationship between valve authority and the equal percentage characteristic of a control valve.
Please see our website for classroom training sessions in Melbourne and Sydney.
www.bms-training.com
Schematics used in the video are credited to:
CIBSE Guide H - Building Control Systems
The Chartered Institute of Building Services Engineers (UK)
I honestly recommend this manual for BMS professionals.
0 Comments