Learn Engineering Thermodynamics from Scratch

Explain the concepts of energy, heat, and work using everyday analogies and describe their interrelationship.

Identify thermodynamic systems (open, closed, isolated), boundaries, and surroundings in real-world scenarios.

Distinguish between intensive properties (e.g., temperature, pressure) and extensive properties (e.g., mass, volume).

Define thermodynamic state, process, and cycle, and explain the concept of thermodynamic equilibrium.

Apply dimensional analysis to ensure consistency in equations and convert between common units of energy and power (J, cal, BTU, W, hp).

Solve introductory problems calculating kinetic energy, potential energy, and mechanical work.

Explain pressure from a molecular perspective and solve problems involving absolute, gauge, and vacuum pressures.

Explain temperature as a measure of average molecular kinetic energy and describe the Zeroth Law of Thermodynamics.

Convert between the Celsius, Fahrenheit, Kelvin, and Rankine temperature scales, and explain the concept of absolute zero.

Describe the behavior of an ideal gas using the assumptions of the kinetic theory of gases.

Apply the ideal gas equation of state (PV=mRT) to solve for unknown properties in a system.

Determine the properties of an ideal gas mixture using Dalton's law of partial pressures.

State the First Law of Thermodynamics as the principle of energy conservation.

Define internal energy as a property of a system and distinguish it from other forms of energy.

Apply the closed system energy balance (ΔE = Q - W) with correct sign conventions for heat and work.

Distinguish between state functions (properties) and path functions (heat and work) using graphical and physical examples.

Define and explain the physical meaning of specific heats at constant volume (Cv) and constant pressure (Cp).

Relate changes in internal energy and enthalpy to temperature changes for an ideal gas using specific heats.

Analyze constant volume (isochoric) and constant pressure (isobaric) processes, calculating work and heat transfer.

Analyze constant temperature (isothermal) processes for an ideal gas and calculate work and heat transfer.

Analyze reversible adiabatic (isentropic) processes for an ideal gas and apply the relation PV^k = constant.

Represent these four fundamental processes on P-V diagrams and calculate net work for a simple cycle.

Apply the First Law to solve problems involving sequences of thermodynamic processes.

Explain the concepts of control volume, mass flow rate, and volume flow rate for open systems.

Define flow work and explain its role in transporting energy across control volume boundaries.

Define enthalpy (H = U + PV) and explain its utility as the total energy of a flowing fluid.

Derive the general steady-flow energy equation (SFEE) by applying mass and energy conservation to a control volume.

Simplify the SFEE to analyze common engineering devices like nozzles, diffusers, turbines, and compressors.

Apply the SFEE to analyze throttling devices and heat exchangers.

Describe the phases of matter (solid, liquid, vapor) and the process of phase change at constant pressure.

Define saturation temperature, saturation pressure, and latent heat.

Interpret P-V, T-V, and P-T diagrams for pure substances, identifying key regions and points.

Define quality (dryness fraction) and use it to determine properties in the saturated liquid-vapor mixture region.

Use steam tables to find thermodynamic properties of water in the compressed liquid, saturated, and superheated vapor regions.

Solve problems involving energy changes during phase-change processes using property tables.

Explain why the First Law is insufficient for predicting processes and why a Second Law is necessary.

Describe a thermal energy reservoir and the basic components of a heat engine.

State the Kelvin-Planck statement of the Second Law and explain its implication for heat engine efficiency.

Describe the operation of refrigerators and heat pumps.

State the Clausius statement of the Second Law and explain its implication for heat transfer from cold to hot.

Define thermal efficiency for heat engines and coefficient of performance (COP) for refrigerators and heat pumps.

Distinguish between reversible and irreversible processes, identifying common sources of irreversibility (e.g., friction, free expansion).

Explain why reversible processes are theoretical ideals that deliver maximum work or require minimum work.

Describe the four processes of the Carnot cycle and represent it on a P-V diagram.

Explain why the Carnot cycle is the most efficient cycle possible operating between two thermal reservoirs.

Derive the Carnot efficiency formula in terms of absolute temperatures (η_th,rev = 1 - TL/TH).

Calculate the maximum possible efficiency of a heat engine and COP of a refrigerator operating between two given temperatures.

Define entropy change mathematically for a reversible process (dS = (δQ/T)_rev).

State the increase of entropy principle (S_gen ≥ 0) and explain its connection to process irreversibility.

Calculate the entropy change of a pure substance during a process using property tables.

Calculate the entropy change of an ideal gas undergoing various processes.

Sketch and interpret Temperature-Entropy (T-S) diagrams for thermodynamic processes and cycles.

Define an isentropic process as a reversible and adiabatic process (constant entropy).

Use isentropic relations and property tables to analyze ideal turbines, compressors, and nozzles.

Explain how an isentropic process serves as an ideal benchmark for real adiabatic devices.

Define and calculate the isentropic (or adiabatic) efficiency of a turbine.

Define and calculate the isentropic (or adiabatic) efficiency of a compressor or pump.

Analyze the ideal Otto cycle, the model for spark-ignition (gasoline) engines, and calculate its thermal efficiency.

Analyze the ideal Diesel cycle, the model for compression-ignition engines, and calculate its thermal efficiency.

Compare the performance of Otto and Diesel cycles under various operating conditions.

Analyze the ideal Brayton cycle, the model for gas turbines and jet engines.

Calculate the thermal efficiency of the Brayton cycle and understand the concept of the back work ratio.

Solve comparative problems for different ideal gas power cycles.

Analyze the ideal Rankine cycle, the model for steam power plants.

Evaluate the performance of the Rankine cycle by calculating thermal efficiency and net work output.

Describe the basic components and operation of the ideal vapor-compression refrigeration cycle.

Represent the refrigeration cycle on a T-s and P-h diagram.

Analyze the performance of a refrigeration cycle by calculating its coefficient of performance (COP).

Explain how a heat pump works by reversing the objective of a refrigeration cycle.