Steady Flow Energy Equation in Engineering Thermodynamics by PK NAG (Chapter 05) | EveryEng

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Steady Flow Energy Equation in Engineering Thermodynamics by PK NAG (Chapter 05)

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₹ 450

404 min

Anytime

Hindi

4413 views

Saurabh Kumar GuptaMechanical Engineer

Oil & Gas Upstream

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Why enroll

This course is based on PK Nag's Book Chapter 05, to excel in the GATE (Graduate Aptitude Test in Engineering) examination and to secure good marks in other engineering exams. Thermodynamics is a crucial subject in the engineering syllabus, and mastering the concepts and applications presented in Chapter 05 is essential to achieving a high score. By taking this course, individuals can gain a comprehensive understanding of thermodynamic principles, practice solving problems, and develop strategies to tackle complex questions. With a strong foundation in thermodynamics, students can confidently approach the GATE exam and improve their chances of securing admission to top engineering programs or landing coveted jobs at top PSUs.

Master the fundamentals of thermodynamics and unlock the secrets of energy conversion, efficiency, and optimization—enroll now and become a thermal energy expert!

Your instructor

Saurabh Kumar Gupta

Content Manager

Mechanical Engineer

5+ yrs experience·India

Is this course for you?

You should take this if

You work in Oil & Gas Upstream or HVAC
You're a Mechanical Engineering / Chemical & Process professional
You prefer self-paced learning you can revisit

You should skip if

You need a different specialisation outside Mechanical Engineering
You need live interaction with an instructor

Course details

The steady flow energy equation is a fundamental concept in thermodynamics, used to analyze the energy interactions in steady-state fluid flow systems. This equation states that the total energy entering a control volume equals the total energy leaving the control volume, accounting for energy transfers as heat and work. Mathematically, it is expressed as: h1 + ke1 + pe1 + q = h2 + ke2 + pe2 + w, where h represents specific enthalpy, ke is kinetic energy, pe is potential energy, q is heat added, and w is work done by the fluid. The steady flow energy equation is widely applied in the analysis and design of various engineering systems, such as turbines, compressors, heat exchangers, and pipelines. By applying this equation, engineers can determine energy changes, calculate work and heat transfer rates, and optimize system performance. The steady flow energy equation provides a powerful tool for understanding and predicting the behavior of fluid flow systems.

Course suitable for

Key topics covered

Mass balance for steady flow
Steady Flow Energy Equations
SFEE vs Bernoulli's Equations
SFEE Applied to nozzle and diffuser
SFEE applied to turbine and compressor s
SFEE applied to throttling process
SFEE to heat exchanger
Unsteady flow energy equation
Charging and discharging tank
Work and heat transfer for open system
Numerical

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

17 lectures6 hr 44 min

Mass Balance Equation For Steady Flow
12 min
Steady Flow Energy Equation (SFEE)
20 min
Steady Flow Energy Equation vs Bernoulli's Equation
6 min
SFEE Applied To Nozzle & Diffusers
27 min
SFEE Applied To Compressors And Turbines
14 min
SFEE Applied to Throttling Devices | Joule's Thomsan Effect
13 min
SFEE Applied To Heat Exchangers
17 min
Unsteady Flow Energy Equation
19 min
Charging And Discharging of Tank
15 min
Work and Heat Transfer in Various Process For Open System
24 min
Pk Nag Solved Example Chapter-5 (Part-1) Example 1 to 7
26 min
PK Nag Book Solved Example Chapter-5 (Part-2)
45 min
Problem With Hints Ch-5
32 min
Problems (Page No. 127) Pk Nag Book Chapter-5 (Part-1)
36 min
Pk Nag Problems Ch-5 (Part-2) Q8 to Q16
35 min
PK Nag Problems Chapter-5 (Part-3) Page No.130
34 min
Pk Nag Problems Chapter-5 (Part-4) Q20 to Q24
29 min

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Questions and Answers

Q: You're sanity-checking a junior calc and google "steady flow energy equation turbine power estimate neglect kinetic potential". A dry gas turbine on an offshore platform drops enthalpy by ~90 kJ/kg at steady state. Mass flow is 12 kg/s. Kinetic and potential terms are small. What's the defensible shaft power order of magnitude?

A: That's the most common mistake — mixing steady state with zero work. Steady flow just kills the accumulation term; enthalpy drop still converts to shaft work. h·ṁ sets the scale, and 90×12 kJ/s lands you right around a megawatt before mechanical losses even enter the discussion.

Q: During a HAZID someone searches "steady flow energy equation pump temperature rise liquid". A centrifugal pump handling seawater shows a 6 bar pressure rise with negligible heat loss. What happens to the fluid temperature, and why?

A: That's the most common mistake — assuming incompressible means no temperature change. The SFEE still balances work into internal energy. For water the rise is small, but it’s not zero, and dismissing it is how seal cooling margins quietly disappear.

Q: You're reviewing a vendor note after googling "API compressor performance steady flow energy equation assumptions". For a centrifugal gas compressor under API 617, which SFEE term is intentionally minimized during testing, and why?

A: That's the most common mistake — thinking standards chase mathematical purity. API cares about repeatable efficiency. By suppressing heat transfer, the SFEE collapses into a cleaner work–enthalpy balance that actually compares machines instead of test cell quirks.

Q: A colleague searches "steady flow energy equation heat exchanger material selection offshore". For a shell-and-tube exchanger analyzed with SFEE, handling hot produced water with chlorides, what dominates material choice rather than the energy balance itself?

A: That's the most common mistake — over-reading the equation and under-reading the environment. SFEE sets duties; chlorides set failure modes. Ignore that, and the exchanger meets the heat load right up to the leak test.