A liquid is contained in a reactor vessel at 115 bar absolute pressure. It is transferred to a storage vessel through a 50 mm internal diameter commercial steel pipe. The storage vessel is nitrogen-blanketed and pressure above the liquid surface is kept constant at 1500 N/m² gauge. The total run of pipe between the two vessels is 200 m. The miscellaneous losses due to entry and exit losses, fittings, valves, etc., amount to 800 equivalent pipe diameters. The liquid level in the storage vessel is at an elevation 20 m below the level in the reactor. A turbine is fitted in the pipeline to recover the available excess energy, over that required to transfer the liquid from one vessel to the other. Estimate the power that can be taken from the turbine, when the liquid transfer rate is 5000 kg/h. Take the efficiency of the turbine as 70%. The properties of the fluid are: density 895 kg/m³, viscosity 0.76 mNm ²s.

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
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A liquid is contained in a reactor vessel at 115 bar absolute pressure. It is transferred to a storage vessel
through a 50 mm internal diameter commercial steel pipe. The storage vessel is nitrogen-blanketed and
pressure above the liquid surface is kept constant at 1500 N/m² gauge. The total run of pipe between the two
vessels is 200 m. The miscellaneous losses due to entry and exit losses, fittings, valves, etc., amount to 800
equivalent pipe diameters. The liquid level in the storage vessel is at an elevation 20 m below the level in the
reactor. A turbine is fitted in the pipeline to recover the available excess energy, over that required to transfer
the liquid from one vessel to the other. Estimate the power that can be taken from the turbine, when the liquid
transfer rate is 5000 kg/h. Take the efficiency of the turbine as 70%. The properties of the fluid are: density
895 kg/m³, viscosity 0.76 mNm ²s.
Transcribed Image Text:A liquid is contained in a reactor vessel at 115 bar absolute pressure. It is transferred to a storage vessel through a 50 mm internal diameter commercial steel pipe. The storage vessel is nitrogen-blanketed and pressure above the liquid surface is kept constant at 1500 N/m² gauge. The total run of pipe between the two vessels is 200 m. The miscellaneous losses due to entry and exit losses, fittings, valves, etc., amount to 800 equivalent pipe diameters. The liquid level in the storage vessel is at an elevation 20 m below the level in the reactor. A turbine is fitted in the pipeline to recover the available excess energy, over that required to transfer the liquid from one vessel to the other. Estimate the power that can be taken from the turbine, when the liquid transfer rate is 5000 kg/h. Take the efficiency of the turbine as 70%. The properties of the fluid are: density 895 kg/m³, viscosity 0.76 mNm ²s.
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