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2003 Course Piping Design & Engineering (Elective II)

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Total No. of Questions : 12] P1522 [Total No. of Pages :3 [3764] - 339 B.E. (Chemical Engineering) PIPING DESIGN AND ENGINEERING (2003 Course) (Elective - II) Time : 3 Hours] [Max. Marks:100 Instructions to the candidates: 1) Answer 3 questions from Section I and 3 questions from Section II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) A horizontal commercial steel pipeline 100mm in diameter and 400m long carrying gasoline at 40 C has a pressure drop of 1.33 105 N/m2. Compute the flowrate when the specific gravity is 0.68. The kinematic viscosity of gasoline at 40 C is 4.2 10-7 m2/s. The equivalent sand grain roughness of pipe material is 4.92 10-5 m. [8] b) Discuss the procedure in determining pipe diameter for specified height of pipe wall roughness and the discharge? [8] OR Q2) a) Derive the following : [8] n r . Qo Q = n. r . n . Qo 1 b) Two pipes each 300mm long are available for connecting to a reservoir from which a flow 0.085 m3/s is required. If the diameters of the two pipes are 0.030m and 0.015m respectively. Determine the ratio of the head of head loss when the pipes are connected in series to the head loss when they are connected in parallal. Neglect minor losses. [8] P.T.O.

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