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Moisture Transport Mechanism and Drying Kinetic of Fresh Harvested Red Onion Bulbs under Dehumidified Air

International Journal of Food Engineering, 2017
Abstract Drying plays an important role in post-harvest handling of onion for prolonging storage time. This research focuses on the drying studies of red onion bulbs using dehumidified air. The works were carried out by observing the microscopic structure of red onion bulbs layer and followed by developing mass transfer model for ...
Nurul Asiah   +2 more
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Transport Equations for Moist Air at Elevated Wet Bulb Temperatures

Drying Technology, 2004
Abstract In meteorological applications psychrometers are used both as a humidity transfer standard and as a measurement instrument. Unfortunately wet bulb temperature, t wb, is not a thermodynamic property and consequently, in equation linking vapor pressure and temperature, the psychrometer constant, from now on called the psychrometer coefficient, a,
C.-G. A. Berg   +3 more
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Wet-bulb, dew point, and air temperature trends in Spain

Theoretical and Applied Climatology, 2016
This study analyses trends of mean (Tm), maximum (Tx), minimum (Tn), dew point (Td), and wet-bulb temperatures (Tw) on an annual, seasonal, and monthly time scale over Spain during the period 1981–2010. The main purpose was to determine how temperature and humidity changes are impacting on Tw, which is probably a better measure of climate change than ...
R. Moratiel   +4 more
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Measurement of Time Constant of Wet-Bulb Thermocouple in Air

Experimental Heat Transfer, 2006
An experimental apparatus was built to measure the time constant of fine wet-bulb thermocouples in air. Rapid response solenoid valves (15 msec response time) were used to control airflow through tubing into which wet-bulb thermocouples were placed. Wet-bulb thermocouples (type T, 0.005 cm diameter) with the tip (bead) covered with a moistened wick ...
Kambiz Farahmand, Jonathan W. Kaufman
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The Envirec-An Instrument for Continuous Recordings of Environmental Air, Wet-Bulb, and Globe Temperatures, and Air Velocity

American Industrial Hygiene Association Journal, 1959
(1959). The Envirec-An Instrument for Continuous Recordings of Environmental Air, Wet-Bulb, and Globe Temperatures, and Air Velocity. American Industrial Hygiene Association Journal: Vol. 20, No. 2, pp. 121-130.
A D, HOSEY, A C, MENDENHALL
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Indirect evaporative cooling of air to a sub-wet bulb temperature

Applied Thermal Engineering, 2010
Indirect evaporative cooling is a sustainable method for cooling of air. The main constraint that limits the wide use of evaporative coolers is the ultimate temperature of the process, which is the wet bulb temperature of ambient air. In this paper, a method is presented to produce air at a sub-wet bulb temperature by indirect evaporative cooling ...
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