PE Mechanical Thermal Fluids study guide
PE Mechanical Thermal Fluids · Work through your exam, one topic at a time.
The PE Mechanical: Thermal and Fluid Systems exam is one of three NCEES PE Mechanical discipline exams, alongside HVAC and Refrigeration and Machine Design and Materials. It is a computer-based, closed-book exam administered year-round at NCEES-approved Pearson test centers. It is designed for engineers with a minimum of four years of post-college work experience in their chosen engineering discipline, and it tests for a minimum level of competency in thermal and fluid systems engineering. The exam includes 80 questions delivered in multiple-choice format plus alternative item types (AITs). The appointment time is 9 hours: a 2-minute nondisclosure agreement, an 8-minute tutorial, 8 hours of exam time, and a 50-minute scheduled break. The exam fee is $400, payable directly to NCEES; some licensing boards also require a separate application and fee. Topics on this exam: Thermal and Fluid Systems. The PE Mechanical Thermal Fluids study guide has 1 section and about 460 words.
01Thermal and Fluid Systems: Integrated Mass, Energy, and Heat-Transfer Calculations
Thermal and Fluid Systems is the integrated fluid-mechanics, thermodynamics, and heat-transfer domain. Items usually ask you to pick the right conservation statement - mass, momentum, or energy - and carry it through a pipe, pump, heat exchanger, or power cycle with consistent units. Expect property lookups (density, viscosity, cp) that must be evaluated at the correct bulk or film temperature. Many items are multi-step: a flow rate from part one feeds a later heat-transfer calculation.
460 words, about 2 minMore study resources for PE Mechanical Thermal Fluids
- Practice questionsA closed rigid tank holds saturated liquid water at 150 °C in equilibrium with its vapor.
- FlashcardsReynolds number. It compares inertia to viscous forces and sets whether pipe flow is laminar (below about 2300) or turbulent (above about 4000).
- Cheat sheetSteady-flow energy: q - w = Δh + ΔKE + ΔPE per unit mass; for adiabatic nozzles/diffusers w = 0 and q = 0, so h1 + V1²/2 = h2 + V2²/2.
- Key termsEnthalpy. A combined property equal to internal energy plus the product of pressure and specific volume.
- Study planInventory the full exam topic list for Thermal and Fluid Systems and map each topic to a confidence rating (high, medium, low) so the remaining seven weeks target only weak areas.
- Common mistakesThe exam presents cycles in prose or simple tables, so candidates jump straight to formulas.
- Exam-day guideBring the exact original ID the testing provider requires, with a name matching your registration.