Fundamentals of Thermal-Fluid Sciences
5th Edition
ISBN: 9780078027680
Author: Yunus A. Cengel Dr., Robert H. Turner, John M. Cimbala
Publisher: McGraw-Hill Education
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Chapter 7, Problem 82P
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How to increase the COP of a Carnot refrigerator.
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2) Use the method of MEMBERS to determine the true magnitude and
direction of the forces in members1 and 2 of the frame shown below
in Fig 3.2.
300lbs/ft
member-1
member-2
30°
Fig 3.2.
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5670 mm
The apartment in the ground floor of three floors building in Fig. in Baghdad city. The details of
walls, roof, windows and door are shown. The window is a double glazing and air space thickness
is 1.3cm Poorly Fitted-with Storm Sash with wood strip and storm window of 0.6 cm glass
thickness. The thickness of door is 2.5 cm. The door is Poor Installation. There are two peoples
in each room. The height of room is 280 cm. assume the indoor design conditions are 25°C DBT
and 50 RH, and moisture content of 8 gw/kga. The moisture content of outdoor is 10.5 gw/kga.
Calculate heat gain for living room :
الشقة في الطابق الأرضي من مبنى ثلاثة طوابق في مدينة بغداد يظهر في مخطط الشقة تفاصيل الجدران والسقف
والنوافذ والباب. النافذة عبارة عن زجاج مزدوج وسمك الفراغ الهوائي 1.3 سم ضعيف الاحكام مع ساتر حماية مع إطار
خشبي والنافذة بسماكة زجاج 0.6 سم سماكة الباب 2.5 سم. الباب هو تركيب ضعيف هناك شخصان في كل غرفة.
ارتفاع الغرفة 280 سم. افترض أن ظروف التصميم الداخلي هي DBT25 و R50 ، ومحتوى الرطوبة 8…
Chapter 7 Solutions
Fundamentals of Thermal-Fluid Sciences
Ch. 7 - Prob. 1PCh. 7 - Describe an imaginary process that satisfies the...Ch. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - What are the characteristics of all heat engines?
Ch. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10P
Ch. 7 - Does a heat engine that has a thermal efficiency...Ch. 7 - Prob. 12PCh. 7 - Are the efficiencies of all the work-producing...Ch. 7 - Consider a pan of water being heated (a) by...Ch. 7 - A steam power plant receives heat from a furnace...Ch. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - The thermal efficiency of a general heat engine is...Ch. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - In 2001, the United States produced 51 percent of...Ch. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - What is the Clausius expression of the second law...Ch. 7 - Show that the Kelvin–Planck and the Clausius...Ch. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - A residential heat pump has a coefficient of...Ch. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - A household refrigerator that has a power input of...Ch. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - A household refrigerator runs one-fourth of the...Ch. 7 - A heat pump used to heat a house runs about...Ch. 7 - Prob. 51PCh. 7 - Consider a building whose annual air-conditioning...Ch. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57PCh. 7 - Why does a nonquasi-equilibrium compression...Ch. 7 - Prob. 59PCh. 7 - Prob. 60PCh. 7 - Prob. 61PCh. 7 - Prob. 62PCh. 7 - Prob. 63PCh. 7 - Prob. 64PCh. 7 - Prob. 65PCh. 7 - Prob. 66PCh. 7 - Prob. 67PCh. 7 - Is there any way to increase the efficiency of a...Ch. 7 - Prob. 69PCh. 7 - Prob. 70PCh. 7 - Prob. 71PCh. 7 - Prob. 72PCh. 7 - Prob. 73PCh. 7 - Prob. 74PCh. 7 - Prob. 75PCh. 7 - An inventor claims to have devised a cyclical...Ch. 7 - A heat engine receives heat from a heat source at...Ch. 7 - In tropical climates, the water near the surface...Ch. 7 - A well-established way of power generation...Ch. 7 - Prob. 80PCh. 7 - Prob. 81PCh. 7 - Prob. 82PCh. 7 - Prob. 83PCh. 7 - Prob. 84PCh. 7 - Prob. 85PCh. 7 - Prob. 86PCh. 7 - Prob. 87PCh. 7 - Prob. 88PCh. 7 - Prob. 89PCh. 7 - Prob. 90PCh. 7 - Prob. 91PCh. 7 - Prob. 92PCh. 7 - Prob. 93PCh. 7 - Prob. 94PCh. 7 - Prob. 95PCh. 7 - Prob. 96PCh. 7 - Prob. 97PCh. 7 - Prob. 98PCh. 7 - Prob. 99PCh. 7 - Prob. 100PCh. 7 - Prob. 101PCh. 7 - Prob. 102PCh. 7 - Prob. 103PCh. 7 - Prob. 104PCh. 7 - Prob. 105PCh. 7 - Prob. 106RQCh. 7 - Prob. 107RQCh. 7 - Prob. 108RQCh. 7 - Prob. 109RQCh. 7 - Prob. 110RQCh. 7 - Prob. 111RQCh. 7 - Prob. 112RQCh. 7 - Prob. 114RQCh. 7 - Prob. 115RQCh. 7 - Prob. 117RQCh. 7 - Prob. 118RQCh. 7 - Prob. 119RQCh. 7 - Prob. 120RQCh. 7 - Prob. 121RQCh. 7 - Prob. 122RQCh. 7 - Prob. 123RQCh. 7 - Prob. 124RQCh. 7 - Prob. 125RQCh. 7 - Prob. 127RQCh. 7 - The drinking water needs of a production facility...Ch. 7 - Prob. 129RQCh. 7 - Prob. 131RQCh. 7 - Prob. 132RQCh. 7 - Prob. 133RQCh. 7 - Prob. 134RQCh. 7 - Prob. 136RQCh. 7 - Prob. 137RQ
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- - | العنوان In non-continuous dieless drawing process for copper tube as shown in Fig. (1), take the following data: Do-20mm, to=3mm, D=12mm, ti/to=0.6 and v.-15mm/s. Calculate: (1) area reduction RA, (2) drawing velocity v. Knowing that: ti: final thickness V. Fig. (1) ofthrearrow_forwardA direct extrusion operation produces the cross section shown in Fig. (2) from an aluminum billet whose diameter 160 mm and length - 700 mm. Determine the length of the extruded section at the end of the operation if the die angle -14° 60 X Fig. (2) Note: all dimensions in mm.arrow_forwardFor hot rolling processes, show that the average strain rate can be given as: = (1+5)√RdIn(+1)arrow_forward
- : +0 usão العنوان on to A vertical true centrifugal casting process is used to produce bushings that are 250 mm long and 200 mm in outside diameter. If the rotational speed during solidification is 500 rev/min, determine the inside radii at the top and bottom of the bushing if R-2R. Take: -9.81 mis ۲/۱ ostrararrow_forward: +0 العنوان use only In conventional drawing of a stainless steel wire, the original diameter D.-3mm, the area reduction at each die stand r-40%, and the proposed final diameter D.-0.5mm, how many die stands are required to complete this process. онarrow_forwardIn non-continuous dieless drawing process for copper tube as shown in Fig. (1), take the following data: Do-20mm, to=3mm, D=12mm, ti/to=0.6 and vo-15mm/s. Calculate: (1) area reduction RA, (2) drawing velocity v. Knowing that: t₁: final thickness D₁ V. Fig. (1) Darrow_forward
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