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Air circulation is of
the utmost importance in accelerated concrete curing systems. The
circulation of air within the curing
chamber
maintains even temperatures and prevents hot and cold spots.
Proper air circulation also prevents water drops on the concrete
by reducing
condensation and preventing moisture buildup.
 Benefits of Air Circulation Systems
- Maintain consistent temperature in the curing chamber
- Reduce condensation
- Prevent water drops on concrete
- Increase ex-chamber concrete strength by 10% to 15% due to
controlled drying
- Reduce condensation on floors and other curing area surfaces,
preventing operating issues with transport equipment
and improving safety
Types of Air Circulation Systems
- Axial Air Circulation
- Nautilus Radial Air Circulation
 Axial Air Circulation
The Axial Air Circulation System is an economical solution for maintaining
an even climate in small - to medium - size curing areas at lower curing
temperatures.
Operating Features
- Maximum curing temperature of 105°F (40°C)
- Outputs range from 2,000cfm (3,500m3/h) to 6,500cfm (11,000m3/h)
at 1/8” (30 Pa) static pressure
- Maintains a constant temperature and humidity throughout
the curing area when located correctly
Size based on chamber dimensions, temperature and relative
humidity
- Choice of system controls
o Manual
o Timer
o Automatic via integration in AutoCure™ automatic
curing control system
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 Nautilus
Radial Air Circulation
The
Nautilus Radial Air Circulation System, an exclusive technology
from Kraft Energy™, is a high-performance radial ventilator
designed to meet the rugged demands of the concrete curing
process in large chambers and higher temperatures.
Operating Features
- Maximum curing temperature of 175°F (80°C)
- Maximum relative humidity of 100%
- Outputs range from 1,230cfm (2,100m3/h) to 18,800cfm (32,000m3/h)
at 1/2” (100 Pa) static pressure
- Optimum air circulation in large curing areas up to 26ft
(8m) high and 115ft (35m) long
- Ceiling mount aluminum frame supports the high-volume radial
fan and direct-drive (coupling) externally mounted motor
Air Circulation and Exhaust Systems:
Air Circulation . Air
Exhaust Ventilation . Air
Re-Exhaust System
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