The Humidicore™ depends upon a reliable motor to turn the core. Core rotation speed controls the outlet dew point. A variable speed motor is usually desired, although some fuel cell plants work fine at a fixed speed.
Brushless DC motors work best because of their long lives and non-sparking characteristics.
Emprise offers three motor models:
| Manufacturer | Speed (rpm) |
Torque (in-lbf) |
Voltage (dc volts) |
Maximum Power (watts) |
| (M-K) | 0-55 | 15 | 12 to 36 | 24 |
| (BMC) | 0-40 | 30 | 12, 24, 48 | 50 |
| (BMC) | 40 | 30 | 12,24,48 | 50 |
| (BMC) | 0-60 | 60 | 12,24, 48 | 111 |
The chart below illustrates the outline dimensions of these motors. The torque requirements of the various cartridge sizes are as follows:
| Nominal Core Diameter |
Torque (in-lbf) |
Power Consumption (watts) |
| 4 | 10 | 16 |
| 6 | 15 | 25 |
| 8 | 20 | 35 |
Any motor that meets these requirements may be used.
Next: Leakage Considerations
How Humidicore™ Works
Picking the Right Size
Cartridge Details
Manifold Design
Motor Options
Leakage Considerations
Installation Considerations
Field Service
The Humidicore™ was recently selected as one of R&D Magazine's top 100 Most Technologically Significant Inventions of the Year.
