Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
7th Edition
ISBN: 9781337794381
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 54, Problem 1SA
What is the amount of heat necessary to change the state of a substance called?
Expert Solution & Answer
To determine
The name given to the amount of heat necessary to change the state of a substance.
Answer to Problem 1SA
The heat necessary to change the state of a substance is termed as latent heat.
Explanation of Solution
When there is a change in state of a substance that is the substance becomes liquid from solid or vapor from liquid or vice versa, a huge amount of heat is required, this heat is termed as latent heat of vaporization and this process is termed as phase change.
Phase change is quite a complex process and during this process, no change in pressure or temperature is observed.
Conclusion:
Thus, the heat necessary to change the state of a substance is termed as latent heat.
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4) 1 Mg (dry weight) of a non-porous
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conditions with an air
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If initial
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The falling rate of drying is linear
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14.23. A double-effect forward-feed
evaporator is required to give a product
consisting of 30 per cent crystals and a
mother liquor containing 40 per cent by
mass of dissolved solids. Heat transfer
coefficients are 2.8 and 1.7 kW/m² K in the
first and second effects respectively. Dry
saturated steam is supplied at 375 kN/m²
and the condenser operates at 13.5 kN/
m².
(a) What area of heating surface is
required in each effect assuming the
effects are identical, if the feed rate is 0.6
kg/s of liquor, containing 20 per cent by
mass of dissolved solids, and the feed
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(b) What is the pressure above the boiling
liquid in the first effect?
The specific heat capacity may be
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hydrostatic head may be neglected.
O
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Chapter 54 Solutions
Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
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