EBK AUTOMOTIVE TECHNOLOGY: A SYSTEMS AP
6th Edition
ISBN: 8220100474392
Author: ERJAVEC
Publisher: Cengage Learning US
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Chapter 12, Problem 8RQ
To determine
The effect of resurfacing cylinder head on valve timing and steps taken when heads need resurfacing of OHC engine.
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2000 Kg/hr on an acetone water mixture containing 10% of acetone is to be extracted with
trichloroethane. The recovered solvent to be used is free of acetone. If 95% recovery of acetone is desired, the
equilibrium relationship is given by kg acetone/kg trichloroethane 1.65 kg acetone/kg water.
Estimate the number of stages required if 1.5 times the minimum solvent is used when: -
a-
Cross-current is to be extracted.
b- b- Counter-current is to be extracted.
2/1000kg/h of an acetone - water mixture containing 20wt% by weight of acetone is to be counter currently
extracted with trichloroethane. The recovered solvent to be used is free from acetone. The water and
trichloroethane are insoluble. If 90% recovery of acetone is desired estimate the number of stages required if 1.5
times the minimum solvent is used. The kg acetone/kg extract=1.65 kg water/kg raffinate.
a-
Repeat the calculation of A if the solvent used has purity of 98.5%.
b- If co-current extractor is used instead of counter-current extractor in A and B estimate the number of
stages required if equal amount of solvent used in each stage.
Water is pumped from a large reservoir to a point 75 feet higher
than the reservoir. How many feet of head must be added by the
pump if 7600 lbm/hr flows through a 6-inch pipe and the frictional
head loss is 3 feet? The density of the fluid is 60 lbm/ft³ and the
pump efficiency is 70%. Assume the kinetic energy correction
factor equals 1.
Chapter 12 Solutions
EBK AUTOMOTIVE TECHNOLOGY: A SYSTEMS AP
Ch. 12 - Explain staged and continuously variable value...Ch. 12 - Define valve margin.Ch. 12 - What usually causes warpage in an aluminum cylin...Ch. 12 - What are the two ways pushrods can be checked for...Ch. 12 - Which of the following is not true of knurling? It...Ch. 12 - True False? Fiats MultiAir system relies on...Ch. 12 - To allow the engine to run on the Atkinson cycle,...Ch. 12 - Prob. 8RQCh. 12 - To ensure proper seating of the valve, the valve...Ch. 12 - When checking valve fit, contact between the valve...
Ch. 12 - If the valve face and valve seat do not contact...Ch. 12 - Many engines with WT have a phaser mounted to the...Ch. 12 - Multiple valve engines tend to be more efficient...Ch. 12 - Which of the following is not a type of valve...Ch. 12 - Which of the following statements is not true?...Ch. 12 - While discussing the reasons for resurfacing a...Ch. 12 - While inspecting the timing gears of an engine:...Ch. 12 - Technician A says that positive valve stem seals...Ch. 12 - When fitting a freshly ground valve into a freshly...Ch. 12 - Technician A says off-square springs may cause...Ch. 12 - Technician A says it is not necessary to measure...Ch. 12 - Technician A uses a 30-degree stone for topping a...Ch. 12 - While discussing the Valvetronic system:...Ch. 12 - While checking a hydraulic phaser after the...Ch. 12 - While servicing a pair of aluminum cylinder heads:...
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