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I need help with this. What does "interpolating in the same table" mean?

I need help with this. What does "interpolating in the same table" mean?

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
Problem 1.1P
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I need help with this. What does "interpolating in the same table" mean?  

PDF *Elementary Principles of Chemic X PDF Elementary Principles of Chemica X + 49°F Sunny File | E:/Elementary%20Principles%20of%20Chemical%20Processes,%204th%20Edition%20(%20PDF Drive%20).pdf Draw (T) Read aloud Example 7.5-3 Solution 391 of 695 Energy Balance on a Steam JESTITIS JUTERIIS TULIT, JORING JUTE Iing for Now consider the properties at 10 bar and 20 bar. both at a temperature of 400°C. Even though the pressure has doubled, the values of Û and Ĥ change by much less than 1%. Similar results would be obtained for liquid water. The conclusion is that when you need a value of Û or Ĥ for water (or for any other species) at a given T and P, you must look it up at the correct temperature-interpolating if necessary but you don't have to find it at the exact pressure. The next example illustrates the use of the steam tables to solve energy balance problems. eam Tur Turbine Steam at 10 bar absolute with 190°C of superheat is fed to a turbine at a rate m = 2000 kg/h. The turbine operation is adiabatic, and the effluent is saturated steam at 1 bar. Calculate the work output of the turbine in kilowatts, neglecting changes in kinetic and potential energy. 372 CHAPTER 7 Energy and Energy Balances OD The energy balance for this steady-state open system is Q Search (Why was the heat term dropped?) Inlet Steam: Table B.7 indicates that steam at 10 bar is saturated at 180°C (verify), so that the inlet steam temperature is 180°C + 190°C = 370°C. Interpolating in the same table, Ĥin (10 bar, 370°C) = 3201 kJ/kg W₁ = AH = m(Ĥout - Ĥin) Outlet Steam: From either Fable B. 6/0 B.7, you can find that the enthalpy of saturated steam at 1 bar is Hout (1 bar, saturated) = 2675 kJ/kg/ 2000 (2675 32014-1 H 1h { J ENG Sign in 100 8:35 AM 5/6/2023 • la + O
Transcribed Image Text:PDF *Elementary Principles of Chemic X PDF Elementary Principles of Chemica X + 49°F Sunny File | E:/Elementary%20Principles%20of%20Chemical%20Processes,%204th%20Edition%20(%20PDF Drive%20).pdf Draw (T) Read aloud Example 7.5-3 Solution 391 of 695 Energy Balance on a Steam JESTITIS JUTERIIS TULIT, JORING JUTE Iing for Now consider the properties at 10 bar and 20 bar. both at a temperature of 400°C. Even though the pressure has doubled, the values of Û and Ĥ change by much less than 1%. Similar results would be obtained for liquid water. The conclusion is that when you need a value of Û or Ĥ for water (or for any other species) at a given T and P, you must look it up at the correct temperature-interpolating if necessary but you don't have to find it at the exact pressure. The next example illustrates the use of the steam tables to solve energy balance problems. eam Tur Turbine Steam at 10 bar absolute with 190°C of superheat is fed to a turbine at a rate m = 2000 kg/h. The turbine operation is adiabatic, and the effluent is saturated steam at 1 bar. Calculate the work output of the turbine in kilowatts, neglecting changes in kinetic and potential energy. 372 CHAPTER 7 Energy and Energy Balances OD The energy balance for this steady-state open system is Q Search (Why was the heat term dropped?) Inlet Steam: Table B.7 indicates that steam at 10 bar is saturated at 180°C (verify), so that the inlet steam temperature is 180°C + 190°C = 370°C. Interpolating in the same table, Ĥin (10 bar, 370°C) = 3201 kJ/kg W₁ = AH = m(Ĥout - Ĥin) Outlet Steam: From either Fable B. 6/0 B.7, you can find that the enthalpy of saturated steam at 1 bar is Hout (1 bar, saturated) = 2675 kJ/kg/ 2000 (2675 32014-1 H 1h { J ENG Sign in 100 8:35 AM 5/6/2023 • la + O
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