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3-48 Consider a double-fluid manometer attached to an air pipe shown in Fig. P3-48. If the specific gravity of ene fluid is 1355, determine the specific gravity of the other fluid for the indicated absolute pressare of air. Take the atmospheric pressure to be 100 kPa Arswer. 5.0 Air SG 22 cm SG, - 1355 FIGURE P3-48

3-48 Consider a double-fluid manometer attached to an air pipe shown in Fig. P3-48. If the specific gravity of ene fluid is 1355, determine the specific gravity of the other fluid for the indicated absolute pressare of air. Take the atmospheric pressure to be 100 kPa Arswer. 5.0 Air SG 22 cm SG, - 1355 FIGURE P3-48

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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Piston 344E Twa eil tanks are connected to each other through a manometer. If the difference between the mercury levels in Air Air a Oil Oil 50 em 10 in 30 cm 25 cm 30 cm 32 in Water 90 cm -Mereury FIGURE P3-44E FIGURE P3-47 108 FLUID MECHANICS 3-48 Consider a double-fluid manometer attached to an air pipe shown in Fig. P3 48. If the specific gravity of ene fluid is 13.55, determine the specific pgravity of the other fluid for the indicated absolute pressure of air. Take the atmospheric pressure to be 100 kPa. Answer: 5.0 3-50 Consider the system shown in Fig. P3-50, If a change of 0.7 kPa in the pressure of air causes the brine mercury interface in the right column to drop hy 5 mm in the brine level in the right column while the pressure in the brine pipe remains constant, determine the ratio of AJA Air Air (P=76 kPa 40 cm Brne pipe SG-1.1 Wates Area A 22 cm Area, A, SG, - 13.55 Mncury SG = 11 56 FIGURE P3-48 FIGURE P3-50 3-49 The pressure difference between an oil pipe and water pipe is measured by a double-fluid manometer, as shwn in Fig. P3 49. For the given fluid heights and specific gravities, calculate the pressure difference AP = P - P, 3-51 Twi water tanks are connected to each ather through a mercury manometer with inclined tubes, as shown in Fig. P3-51. If the pressure difference between the two tanks is 20 kPa, calculate a and o. Water Glycerin scie 1 Water SG-1.26 SG=10 Oil SG -C.88 26 cm 2a 60 em 10 cm Mercury SG - 136 15 cm FIGURE P3-51 20 cm 3-52 A multifluid container is connected to a U-tuhe, as Mercury SG - 13.5 shown in Fig. P3-52. For the given specific gravities and fluid column heights, determine the gage pressure at A. Alsa determine the height of a mercury column that would create the same pressure at A. Answs DA71 KPa, 0.353 om FIGURE P3-49 109 CHAPTER 3 sure center if (a) the car is well-sealed and it contains air at atmospherie pressure and (b) the car is filled with water, 3-61E A long, solid cylinder of radius 2 ft hinged at point A is used as an automatic gate, as shown in Fig. P3-61E. When the water level reaches 15 fi, the cylindrical gate opens by turning about the hinge at point A. Determine (a) the hydrestatic force acting on the cylinder and its line of action when the gate opens and (b) the weight of the cylinder per ft length of the cylinder 70 cm Oil SG=090 30 cm Waner 90 cm Glycerin SG- 1.26 20 cm 15 cm 15 t FIGURE P3-52 Fluid Statics: Hydrostatic Forces on Plane and Curved Surfaces 3-53C Define the resultant hydrostatic force acting on a submerged surface, and the center of pressure. FIGURE P3-61E 3-54C Someone claims that she can determine the magni tude of the hydrostatie forge acting on a plane surface sut 6 Co
Transcribed Image Text:Piston 344E Twa eil tanks are connected to each other through a manometer. If the difference between the mercury levels in Air Air a Oil Oil 50 em 10 in 30 cm 25 cm 30 cm 32 in Water 90 cm -Mereury FIGURE P3-44E FIGURE P3-47 108 FLUID MECHANICS 3-48 Consider a double-fluid manometer attached to an air pipe shown in Fig. P3 48. If the specific gravity of ene fluid is 13.55, determine the specific pgravity of the other fluid for the indicated absolute pressure of air. Take the atmospheric pressure to be 100 kPa. Answer: 5.0 3-50 Consider the system shown in Fig. P3-50, If a change of 0.7 kPa in the pressure of air causes the brine mercury interface in the right column to drop hy 5 mm in the brine level in the right column while the pressure in the brine pipe remains constant, determine the ratio of AJA Air Air (P=76 kPa 40 cm Brne pipe SG-1.1 Wates Area A 22 cm Area, A, SG, - 13.55 Mncury SG = 11 56 FIGURE P3-48 FIGURE P3-50 3-49 The pressure difference between an oil pipe and water pipe is measured by a double-fluid manometer, as shwn in Fig. P3 49. For the given fluid heights and specific gravities, calculate the pressure difference AP = P - P, 3-51 Twi water tanks are connected to each ather through a mercury manometer with inclined tubes, as shown in Fig. P3-51. If the pressure difference between the two tanks is 20 kPa, calculate a and o. Water Glycerin scie 1 Water SG-1.26 SG=10 Oil SG -C.88 26 cm 2a 60 em 10 cm Mercury SG - 136 15 cm FIGURE P3-51 20 cm 3-52 A multifluid container is connected to a U-tuhe, as Mercury SG - 13.5 shown in Fig. P3-52. For the given specific gravities and fluid column heights, determine the gage pressure at A. Alsa determine the height of a mercury column that would create the same pressure at A. Answs DA71 KPa, 0.353 om FIGURE P3-49 109 CHAPTER 3 sure center if (a) the car is well-sealed and it contains air at atmospherie pressure and (b) the car is filled with water, 3-61E A long, solid cylinder of radius 2 ft hinged at point A is used as an automatic gate, as shown in Fig. P3-61E. When the water level reaches 15 fi, the cylindrical gate opens by turning about the hinge at point A. Determine (a) the hydrestatic force acting on the cylinder and its line of action when the gate opens and (b) the weight of the cylinder per ft length of the cylinder 70 cm Oil SG=090 30 cm Waner 90 cm Glycerin SG- 1.26 20 cm 15 cm 15 t FIGURE P3-52 Fluid Statics: Hydrostatic Forces on Plane and Curved Surfaces 3-53C Define the resultant hydrostatic force acting on a submerged surface, and the center of pressure. FIGURE P3-61E 3-54C Someone claims that she can determine the magni tude of the hydrostatie forge acting on a plane surface sut 6 Co
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