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Experimental Method

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Heat and Mass Transfer in the Melting of Frost

Part of the book series: SpringerBriefs in Applied Sciences and Technology ((BRIEFSTHERMAL))

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Abstract

This chapter provides a description of an experimental apparatus constructed to permit real time measurement of frost thickness and planar morphology during growth and melting, as well as heat transfer rates. Quantitative data are obtained via digital reduction of normal and in plane images of the frosted test surface. Data reduction is described, and measurement uncertainties are summarized.

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Abbreviations

A:

Area (m2)

c:

Specific heat (J/kg K)

C:

Thermal capacitance (J/K)

d:

Droplet diameter (m)

E:

Energy (J)

h:

Heat transfer coefficient (W/m2 K)

hm :

Mass transfer coefficient (m/s)

i:

Enthalpy (J/kg)

k:

Thermal conductivity (W/m K)

L:

Length (m)

m:

Mass (kg)

ṁ:

Mass transfer (kg/s)

m″:

Mass flux (kg/m2 s)

N:

Number (–)

p:

Pressure (N/m2)

P:

Power (W), perimeter (m)

q″:

Heat flux (W/m2)

Q:

Heat transfer (W)

rc :

Radius of curvature (m)

R:

Ideal gas constant (J/kg K)

Rth :

Thermal resistance (K/w)

t:

Time (s)

T:

Temperature (K)

U:

Overall heat transfer coefficient (w/m2 K)

V:

Volume (m3)

\( \dot{\mathrm{V}} \) :

Volumetric flow (m3/s)

δ:

Thickness, height (m)

ε:

Porosity (–)

η:

Efficiency

λif :

Latent heat of fusion (J/kg)

ρ:

Density (kg/m3)

a:

Air

c:

Calibration, characteristic

ch:

Chamber

cp:

Cold plate

d:

Defrost, droplet

e:

Edge

f:

Frost

hu:

Humidifier

i:

Ice

l:

Liquid

o:

Outlet

s:

Surface

sp:

Heat flux spreader

t:

Total

ts:

Test surface

TE:

Thermoelectric

v:

Vapor

w:

Water

wall:

Wall

∞:

Exterior

References

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Author information

Authors and Affiliations

  1. Christchurch, New Zealand

    William F. Mohs

  2. Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA

    Francis A. Kulacki

Authors
  1. William F. Mohs
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  2. Francis A. Kulacki
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© 2015 Springer International Publishing Switzerland

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Mohs, W.F., Kulacki, F.A. (2015). Experimental Method. In: Heat and Mass Transfer in the Melting of Frost. SpringerBriefs in Applied Sciences and Technology(). Springer, Cham. https://doi.org/10.1007/978-3-319-20508-3_4

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  • DOI: https://doi.org/10.1007/978-3-319-20508-3_4

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-20507-6

  • Online ISBN: 978-3-319-20508-3

  • eBook Packages: EngineeringEngineering (R0)

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