Heat and Mass Transfer

, Volume 49, Issue 1, pp 31–40 | Cite as

Design of an experimental set up for convective drying: experimental studies at different drying temperature

Original

Abstract

An experimental setup is designed to investigate the convective drying of moist object experimentally. All the design data, components of setup, materials and specifications are presented. Transient moisture content of a rectangular shaped potato slice (4 × 2 × 2 cm) is measured at different air temperatures of 40, 50, 60 and 70 °C with an air velocity of 2 m/s. Two different drying rate periods are observed. Results are compared with available results from literature.

List of symbols

a, b

Constants

A1, A2, A3

Constants

B

Breadth of the moist object (cm)

C

Width of the moist object (cm)

db

Dry basis

L

Length of the moist object (cm)

m

Mass of the object (g)

M

Moisture content (kg/kg of db)

RH

Relative Humidity (%)

T

Temperature (°C)

V

Volume (cm3)

Greek symbols

θ

Angle (°)

ϕ

Diameter (cm)

Φ

Non dimensional moisture content

ρ

Density of object (g/cm3)

ε

Porosity

Subscripts

0

Initial condition

a

Air

s

Solid or dry matter

w

Water

eq

Equilibrium

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringIndian Institute of Technology DelhiNew DelhiIndia

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