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MEC442 – Fluid Mechanics 2 Mac – June 2012 Assignment 1 – Piping System and Pump Selection Date of Assignment Due Date
: 9 th April 2012 : 4th May 2012
The Po!lem A schematic schematic of piping system for cooling water passing through through a chiller condenser to a cooling tower is shown in Figure P! 1" #he flow r ate of water in the system ranges from 2400 !$min to 4000 !$min at 100 percent capacity" Piping Details: #he piping shall %e of &chedule 40 car%on steel pipe" #he total piping length is '0 meters" Assume the loss coefficient coefficient for flow through the condenser condenser tu%ings as( ) condenser * +"0 and the sum of all coefficient of losses of fittings as(
∑ K
loss
=
7.0
"
,-ote: As a guide( the a.erage .elocity in the pipe should not e/ceed 12 ft$s
Exit to cooling
#he pumping specification reuires that the system ha.e three pumps arranged in parallel" During normal operation only two pumps will %e running while the third is used as a stand%y" The Assignment sing the a%o.e information( you are reuired to come up with piping si3e diameter5 and select appropriate pumps for the system" For the gi.en design appro/imate the pumping energy consumption and annual operational costs of the system" ,Assume the system is running at 100 percent capacity for 6 hours and at 70 percent capacity for 4 hours( for a gi.en day( for + days a wee8 throughout the year" #he electricity costs is M 0"1+ cents for e.ery 8;?n line pumps@ from the following we%site" http:$$completewatersystems"com$%rand$%ell
MB442 P!1CPumpCMac12
MEC442 – Fluid Mechanics 2
Semester Mac-June 2012
Rubrics for Evaluation of esi!n Re"ort on #um" Sele ction $ssi!nment
Group Name : __________________________________ Members: 1. ____________________________________ __________________________________ 1%
2. __________________________________
3.
&ritin! #erformance 'evel ()0*+
Purpose: Evaluate a student’s ability to rite a te!"ni!al report. #an$in%: &n a s!ale 'rom 1 (loest per'orman!e) to 10 ("i%"est per'orman!e)* assi%n points to ea!" dimension based on t"e !riteria belo. +ritin% ,imensions+ei%"t tru!ture (30) i%ures* 8ables and E9uations (2) ormattin% (10) Me!"ani!s (2) ,o!umentation and #e'eren!es (10) 8otal 100
,oes Not Meet Epe!tations (1/3 points)
Meets Epe!tations (/7 points)
E!eeds Epe!tations (/10 points)
Para%rap"s are poorly or%ani4ed5 use o' se!tions is illo%i!al and "inders do!ument navi%ation. i%ures* tables and e9uations are not !learly or lo%i!ally identi'ied and 'ail to support t"e tet. ,o!ument is 'ormatted poorly and la!$s a 9uality !over pa%e and inde. enten!es are poorly ritten5 t"ere are numerous in!orre!t ord !"oi!es and errors in %rammar* pun!tuation and spellin%. ails to !orre!tly do!ument any sour!es or to utili4e appropriate !itation 'orms.
Para%rap"s are usually ell/or%ani4ed5 use o' se!tions is lo%i!al and %enerally allos easy navi%ation o' t"e do!ument. ome 'i%ures* tables and e9uations are !learly and lo%i!ally identi'ied and ade9uately support t"e tet. ormattin% o' t"e do!ument is %enerally !onsistent and ade9uate* and in!ludes a %ood 9uality !over pa%e and inde. enten!es are %enerally ell/ritten5 t"ere are a 'e in!orre!t ord !"oi!es and errors in %rammar* pun!tuation and spellin%. Most sour!es are !orre!tly do!umented5 appropriate !itation 'orms are %enerally utili4ed. +ritin% ;riteria
6ll para%rap"s are ell/or%ani4ed5 use o' se!tions is lo%i!al and allos easy navi%ation t"rou%" t"e do!ument. 6ll 'i%ures* tables and e9uations are !learly and lo%i!ally identi'ied and stron%ly support t"e tet. ormatt in% o' t"e do!ument is pro'essional and in!ludes a pro'essional !over pa%e and inde. enten!es are ell/ritten5 t"ere are no in!orre!t ord !"oi!es and t"e tet is 'ree o' errors in %rammar* pun!tuation and spellin%. 6ll sour!es are !orre!tly and t"orou%"ly do!umented5 appropriate !itation 'orms are utili4ed t"rou%"out.
#an$in% Points
Mar$
2%
,echnical Content #erformance 'evel (.0*+
#an$in%: &n a s!ale 'rom 1 (loest per'orman!e) to 10 ("i%"est per'orman!e)* assi%n points to ea!" dimension based on t"e !riteria belo. +ritin% ,imensions+ei%"t &vervie (10) #eliable ,ata 'rom ;redible our!es (10) ,esi%n ;onstraints and 6ssumptions (1) 8"eoreti!al Eplanations (1) ,esi%n ;riteria-6nalysis and ample ;al!ulations. (30) ,esi%n >uality and E''e!tiveness (20) 8otal 100
,oes Not Meet Epe!tations (1/3 points)
Meets Epe!tations (/7 points)
ails to provide an overvie and de'ine t"e s!ope o' t"e or$. ,ata not reliable and 'ails to provide re'eren!e to sour!e o' data. ails to dis!uss desi%n !onstraints and alternatives5 provides no
Provides an ade9uate overvie and %eneral eplanation on t"e s!ope o' t"e or$. 6de9uately des!ribes sele!tion o' data and provides a %eneral eplanation on sour!e o' data.
@e!turer : ____________________________________
Provides a t"orou%" overvie and t"orou%"ly de'ines t"e s!ope o' t"e or$. Provides in/dept" eplanations on data sele!tion and !redible sour!es it" !lear and !omplete re'eren!es.
6de9uately eplains and
addresses
,emonstrates in/dept" resear!" and analysis. Provides in/dept" eplanations on desi%n ,emonstrates ade9uate level o' desi%n ;riteria and analysis* t"orou%"ly !riteria and relevant sample !al!ulations. dis!usses all re9uired !al!ulation steps. 8"e desi%n is 'un!tional but operates at Provide 'un!tional solution at t"e "i%"est a!!eptable level o' per'orman!e. level o' e''i!ien!y and per'orman!e. 8e!"ni!al-;ontent ;riteria