How the Belimo Energy Valve Optimizes Coil and Thus System Performance
Never before has one valve done so much – from providing superior water flow control to trending and diagnostics.
A look inside the Belimo Energy Valve. The Energy Valve combines ALL of the following components:
- Belimo CCV (Characterized Control Valve).
- Electromagnetic flow sensor.
- Advanced control options with Belimo Delta T Manager.
- Supply and return water temperature sensors, for energy management.
- BACnet MS/TP or BACnet IP network communication.
The Energy Valve is a pressure independent characterized control valve that is multi-tasking at all times to optimize the coil performance.
Accurate and automatic flow control are achieved through the Energy Valve’s electromagnetic flow sensor and patented characterizing disc, which has high rangeability and turndown ratio. The equal percentage characteristic of the disc decreases “hunting” and stabilizes system output through small, incremental changes in water flow during the first 10 to 30 degrees of valve opening—where control is most critical. Automatic flow control is enabled through the combination of an accurate flow sensor and powerful algorithm that modulates the control valve to maintain the exact flow.
Monitoring & Adjustment
In addition, the Belimo Delta T Manager continuously monitors the coil Delta T and compares this value with the desired Delta T value or setpoint. For example in a cooling application, if the actual Delta T is below the setpoint, the valve will readjust flow to bring Delta T back to the desired setpoint. Once the appropriate Delta T is re-established, the valve control resumes it is normal operating mode taking its signal from the DDC controller.
The software monitors and can trend all sensed or calculated values for up to 13 months. These values include water flow, return and supply water temperature, power, energy, or media density and more.
Trending & Diagnostics
All of the data that the Energy Valve continuously collects is reported back to the BAS, where it can be accessed for virtually unlimited trending and diagnostics. For instance, a downward trend in the coil power output could signal that the coil is in need of servicing.