Engineering Thermodynamics: Formula Sheet

Engineering Thermodynamics: Formula Sheet

Build a responsible reference sheet of relationships, conditions, units, representations, and decision rules rather than copying unexplained formulas. Studies energy, properties, work, heat, entropy, and cycles for closed and open systems. Course titles, local sequences, grading, safety rules, required tools, and assessment formats vary; align this resource with the current syllabus and instructor directions.

Learning outcomes

• Explain and apply properties and state, then connect it to first law using course-appropriate evidence.
• Explain and apply first law, then connect it to control volumes using course-appropriate evidence.
• Explain and apply control volumes, then connect it to second law and entropy using course-appropriate evidence.
• Explain and apply second law and entropy, then connect it to power and refrigeration cycles using course-appropriate evidence.
• Explain and apply power and refrigeration cycles, then connect it to properties and state using course-appropriate evidence.

Prerequisite readiness

calculus, physics, algebra, units, and basic chemistry Use a short ungraded check, repair the smallest missing skill, and immediately retest it in a course-level task.

Reference-sheet entries

• properties and state: record its governing relationship or decision rule, required conditions, units or evidence, one representation, and a common misuse.
• first law: record its governing relationship or decision rule, required conditions, units or evidence, one representation, and a common misuse.
• control volumes: record its governing relationship or decision rule, required conditions, units or evidence, one representation, and a common misuse.
• second law and entropy: record its governing relationship or decision rule, required conditions, units or evidence, one representation, and a common misuse.
• power and refrigeration cycles: record its governing relationship or decision rule, required conditions, units or evidence, one representation, and a common misuse.

Use test

Can you choose the right relationship on an unlabeled task and explain why its conditions hold? If not, the sheet is storage rather than understanding.

Reliable method

define system and state, mark mass and energy flows, select property relations, apply balances, and test signs and efficiency Keep assumptions, intermediate reasoning, units, sources, tool use, and checks visible so another learner can follow the decision process.

Representative application

Analyze a steady-flow device and reconcile energy transfer, property changes, and stated idealizations. Predict a reasonable result before working, compare the outcome with the prediction, and explain limitations or alternative interpretations.

Error recovery

Watch for using heat and temperature interchangeably or applying efficiency formulas without system boundaries and state data. Mark the first unsupported move, classify the cause, correct the reasoning, and schedule a fresh mixed recheck after a delay.

Accessibility, integrity, and safety

Use approved accommodations and accessible formats. Follow course rules for collaboration, citation, calculators, software, generative tools, laboratories, clinical settings, field activity, privacy, copyright, and human or animal subjects. Never use Exams.fit to obtain protected questions or bypass assessment rules.

Evidence to save

When permitted, preserve a thermodynamic analysis with state table, system diagram, balances, and feasibility check with the prompt, first attempt, feedback, revision, verification, and reflection. Remove restricted assessment content and private or proprietary information.

Open-learning reference

Compare this original Exams.fit resource with the relevant OpenStax collection and MIT OpenCourseWare when they match the local course. Reviewed August 2, 2026. This page does not replace the current syllabus, instructor, institution, or qualified professional.