Multi Fan Hub for 3ph Fans
Multi Fan Hub for 3ph Fans
A wall mounted control panel.
Will trigger multiple 3ph fans into life automatically.
Probes in the grain will detect a temperature differential suitable for cooling.
Product Details
Cropcool Multi Fan Hub for 3ph Fans
- Hub requires a 32amp 3ph supply
- Will automate multiple 1.1kw or 2.2kw grain cooling fans
- Differential temperature control switches fans on and off when ambient conditions allow for efficient grain cooling
- Able to handle multiple grain temperature inputs
- Integral timers switch fans on in stages so supply is not overloaded
- Contains breakers and overloads to protect cables and motors
- Saves money and time by removing the need for an electrical contractor to design and build a bespoke system to automate your fans
- AHDB approved up to 40% energy input saving over manually controlled fans
The big benefit of all three of these systems is that they provide a low-cost option for automation.
Fans are only running when the conditions for cooling are optimal. In a conventional situation, fans will often be switched on as a matter of course in the evening and switched off in the morning.
This approach takes no account of ambient air temperatures and may results in warming the crop rather than cooling. Aside from unnecessary energy usage, this can also put crop quality at risk with higher temperatures increasing insect and mould activity.
Grain Fan Assist Wireless explained
Cooling Using Low Volume Ventilation
Temperatures above 15°C increase the risk of insect and mite populations developing. Relatively warm grain post-harvest is a good insulator, so heat is lost very slowly. Cooling permits grain to be stored at slightly higher moisture content and effectively increases the safe storage time.
Differential Controls
Differential controls have been shown to result in more efficient grain cooling, by switching the cooling fan on when the air temperature is lower than the grain temperature. Cooling systems have the potential to run whenever
‘air of a temperature to permit cooling’ is available and are automatically switched off once the grain reaches the ambient temperature. Reducing fan hours to reach the target temperature (in comparison with manual fan control) reduces energy costs.
“Temperatures fall more rapidly and to lower levels when using automatic compared to manual fan control”
If blowing with cooler air using a differential thermostat (4-6 ̊C difference), it is not possible to dampen grain.
For grain to become damp from blowing, you need a combination of:
- Excessive aeration rates
- Condensation around ducts
- Rain driven into uncovered external fans
- Successive days of condensing fog
1 Year Warranty
1 year Manufacturing defect warranty – Manufactured in Devon, England.
