Exam (elaborations)
ME 2334 Thermodynamics important things to know Louisiana State University
- Course
- Institution
ME 2334 Thermodynamics important things to know Louisiana State University
[Show more]
Content preview
ME 2334 Thermodynamics important things toknow Louisiana State University
, ME 2334 Thermodynamics important things to know Louisiana State University
conservation of energy principle - --energy cannot be created nor destroyed but it can be transformed
from one form to another if total energy remains constant.
first law of thermodynamics - --energy conservation principle
second law of thermodynamics - --energy is described by quantity and quality
processes occur in the direction of decreasing quality of energy
classical thermodynamics - --macroscopic approach to studying thermodynamics that does not require
knowledge of the behavior of the molecules
ex) examining air's properties (density, P, and T)
molecular/statistical thermodynamics - --microscopic approach to studying thermodynamics
focuses on the behavior of molecules
ex) examining the molecular makeup of air
units of force - --1 N → force required to accelerate a mass of 1 kg at a rate of 1 m/s²
1 lbf
units of work/energy - --1 J → the work done by a force of 1 N actioning of a distance of 1 m (1 N* 1 m)
1 calorie (English)
1 Btu =
power (P) - --1 W → 1 J of work done in 1 s
how fast or slow energy is produced/work being done
, as power ↑, work ↑ or time↓
1 hp
system - --a system is defined as a quantity of matter or a region in space chosen for a study. it is
contained by a boundary
surroundings - --the mass/region outside of the system/boundary
boundary - --the surface that separates the system from the surroundings
zero thickness, mass, and volume
can be moving (balloon), or flexible, or fixed
closed system with a fixed boundary - --there is no mass exchange, but energy change can still occur.
volume is fixed, energy is not necessarily fixed. the mass is controlled
closed system with a moving boundary - --there is no mass exchange, but energy change can still occur.
volume is changing, energy is not necessarily fixed. the mass is controlled
open system - --can have both mass and energy exchange. the volume is controlled.
property - --any characteristic of a system
ex) pressure, temperature, and density
extensive property - --dependent on the mass of the system
ex) mass, volume, and energy
can be converted into an intensive property by dividing by mass. these properties are known as specific
properties. changes when a system is divided into 2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller smartzone. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now