- Mass Transfer - Section 1
- Mass Transfer - Section 2
- Mass Transfer - Section 3
- Mass Transfer - Section 4
- Mass Transfer - Section 5
- Mass Transfer - Section 6
- Mass Transfer - Section 7
- Mass Transfer - Section 8
- Mass Transfer - Section 9
- Mass Transfer - Section 10
- Mass Transfer - Section 11
- Mass Transfer - Section 12
- Mass Transfer - Section 13
- Mass Transfer - Section 14


Mass Transfer - Engineering
Q1: For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of h2/ky.Cz is aroundA 0.60
B 0.24
C 1
D 0.72
ANS:C - 1 The expression ℎ2𝑘⋅𝐶𝑧kh2⋅Cz represents the dimensionless parameter in the Nusselt number correlation for free convection heat transfer past a wet bulb thermometer. Here, ℎ2h2 is the convective heat transfer coefficient, 𝑘k is the thermal conductivity, and 𝐶𝑧Cz is a characteristic length. For flow past a wet bulb thermometer in an air-water vapor system, the Nusselt number correlation for free convection can be approximated as: 𝑁𝑢≈0.53(𝐺𝑟⋅𝑃𝑟1+0.56(𝑃𝑟2/3−1))1/4Nu≈0.53(1+0.56(Pr2/3−1)Gr⋅Pr)1/4 Where:
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