Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 39, Problem 1RQ
What is a manufacturing cell? Why was it developed?
Expert Solution & Answer
To determine
What is a manufacturing cell? Why was it developed?
Explanation of Solution
A manufacturing cell is a minor unit comprising of one or more workstations. A workstation commonly comprises any one machine called as single-machine cell or some machines (called a group-machine cell), with each machine execution a diverse operation.
In manned or attended machining cells, movement and manual transfer of raw materials and parts by the operator (except the parts are more over weight or the activities are more dangerous) or by an industrial robot (Section 37.6) placed centrally in the cell. Later, for producing cell there rises the necessity.
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You are asked to design a unit to condense ammonia. The required condensation rate is 0.09kg/s. Saturated ammonia at 30 o C is passed over a vertical plate (10 cm high and 25 cm wide).The properties of ammonia at the saturation temperature of 30°C are hfg = 1144 ́10^3 J/kg andrv = 9.055 kg/m 3 . Use the properties of liquid ammonia at the film temperature of 20°C (Ts =10 o C):Pr = 1.463
rho_l= 610.2 kf/m^3
liquid viscosity= 1.519*10^-4 kg/ ms
kinematic viscosity= 2.489*10^-7 m^2/s
Cpl= 4745 J/kg C
kl=0.4927 W/m CCalculate the surface temperature required to achieve the desired condensation rate of 0.09 kg/s( should be 688 degrees C) a) Show that if you use a bigger vertical plate (2.5 m-wide and 0.8 m-height), the requiredsurface temperature would be now 20 o C. You may use all the properties given as an initialguess. No need to iterate to correct for Tf. b) What if you still want to use small plates because of the space constrains? One way to getaround this problem is to use small…
Chapter 39 Solutions
Manufacturing Engineering & Technology
Ch. 39 - What is a manufacturing cell? Why was it...Ch. 39 - Describe the basic principle of flexible...Ch. 39 - Why is a flexible manufacturing system capable...Ch. 39 - What are the benefits of just-in-time production?...Ch. 39 - Prob. 5RQCh. 39 - What is an expert system?Ch. 39 - What are the advantages of a communications...Ch. 39 - What is MTConnect?Ch. 39 - What is a WLAN? a PAN?Ch. 39 - Describe your understanding of holonic...
Ch. 39 - What is Kanban? Explain.Ch. 39 - What is lean manufacturing?Ch. 39 - What is a push system?Ch. 39 - In the lean manufacturing concept, what is the...Ch. 39 - Prob. 15RQCh. 39 - In what ways have computers had an impact...Ch. 39 - What advantages are there in viewing...Ch. 39 - One restaurant makes sandwiches as they are...Ch. 39 - Discuss the benefits of computer-integrated...Ch. 39 - (a) Why is just-in-time production required in...Ch. 39 - Prob. 21QLPCh. 39 - Give an example of a push system and of a pull...Ch. 39 - What is fuzzy logic? Give three examples where...Ch. 39 - What are the advantages to having level...Ch. 39 - Is there a minimum to the number of machines in...Ch. 39 - Are robots always a component of an FMC? Explain.Ch. 39 - Are there any disadvantages to zero...Ch. 39 - Review Table 36.1 and identify the points that...Ch. 39 - Give examples in manufacturing processes and...Ch. 39 - What types of (a) products and (b) production...Ch. 39 - Describe your opinions concerning the...Ch. 39 - Can a factory ever be completely untended?...Ch. 39 - Assume that you own a manufacturing company andyou...Ch. 39 - How would you describe the benefits of FMS to an...Ch. 39 - Artificial neural networks are particularly useful...Ch. 39 - Prob. 37SDPCh. 39 - Evaluate a process from a lean-production...Ch. 39 - Pull can be achieved by working with one supplier...Ch. 39 - Prob. 40SDP
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