Thermodynamics
Thermodynamics
Thermodynamics: Fundamental Science of Energy "thermo": Greek therme heat "dynamics": Greek dynamikos powerful Physics that deals with the mechanical action or relations between heat and work
Steam Power: ~1800
Transportatio
Chapter 14
Gas-Vapor Mixtures and AirConditioning
Topics to be discussed in class
Dry and Atmospheric Air Specific and Relative Humidity of Air Dew-Point Temperature Adiabatic Saturation & Wet-Bulb Temperature Psychometric Charts Air Conditioning Process
Chapters 1 & 2
Basic Concepts & Energy
Topics to be discussed in class
System & control volume Properties of a system State and Equilibrium Processes and Cycles Energy, Energy Transfer (Heat & Work) Heat & Work : Path functions 1st Law of Thermodynamics
Chapter 6:Second Law of Thermodynamics
Objective: Introduction to second law of thermodynamics: qualitative description
Topics to be covered
Overview of 2nd law Background: thermal reservoirs, heat engines, refrigeration & heat pump Kelvin-Plank and Clau
Chapter 10:Vapor and Combined Power Cycles
Objective:Analyze various vapor cycles with reheat, cogeneration, and combined gas-vapor cycle
Topics to be covered
Carnot Vapor Cycles Rankine Cycle: Reheat Rankine Cycle Regenerative Rankine Cycle Cogeneration
Chapter 9:Gas Power Cycles
Objective: Evaluate performances of various gas power cycles
Topics to be covered
Air-Standard Assumptions Reciprocating Engines- Otto & Diesel Stirling & Ericsson Cycles Brayton cycle- Ideal cycle gas turbine engines - with Re
Chapter 3 Properties of Pure Substances
Objective: Determine the state (all properties) of a system with a pure substance
Topics to be discussed
Phase-Change of Pure Substances Properties Diagrams for Phase-Change Processes Property Tables Compressed liq
15-15 Propane is burned with theoretical amount of air. The mass fraction of carbon dioxide and the mole and mass fractions of the water vapor in the products are to be determined. Properties The molar masses of C3H8, O2, N2, CO2, and H2O are 44, 32, 28,
13-33 The masses, temperatures, and pressures of two gases contained in two tanks connected to each other are given. The valve connecting the tanks is opened and the final temperature is measured. The volume of each tank and the final pressure are to be d
12-28 A substance is heated in a piston-cylinder device until it turns from saturated liquid to saturated vapor at a constant pressure and temperature. The boiling temperature of this substance at a different pressure is to be estimated. Analysis From the
11-19 A refrigerator with refrigerant-134a as the working fluid is considered. The rate of heat removal from the refrigerated space, the power input to the compressor, the isentropic efficiency of the compressor, and the COP of the refrigerator are to be
10-16 A simple ideal Rankine cycle with water as the working fluid operates between the specified pressure limits. The maximum thermal efficiency of the cycle for a given quality at the turbine exit is to be determined. Assumptions 1 Steady operating cond
9-38 An ideal Otto cycle with air as the working fluid has a compression ratio of 9.5. The highest pressure and temperature in the cycle, the amount of heat transferred, the thermal efficiency, and the mean effective pressure are to be determined. Assumpt
7-39 An insulated rigid tank contains a saturated liquid-vapor mixture of water at a specified pressure. An electric heater inside is turned on and kept on until all the liquid vaporized. The entropy change of the water during this process is to be determ
5-34 Air is decelerated in an adiabatic diffuser. The velocity at the exit is to be determined. Assumptions 1 This is a steady-flow process since there is no change with time. 2 Air is an ideal gas with constant specific heats. 3 Potential energy changes
4-9 A piston-cylinder device with a set of stops contains steam at a specified state. Now, the steam is cooled. The compression work for two cases and the final temperature are to be determined. Analysis (a) The specific volumes for the initial and final
1-66 A gas contained in a vertical piston-cylinder device is pressurized by a spring and by the weight of the piston. The pressure of the gas is to be determined. Analysis Drawing the free body diagram of the piston and balancing Fspring the vertical forc
Example 1: Two rigid tanks with H2O are connected by a valve. The valve is now opened until and the two tanks come to the same state at the temperature of surroundings at 25oC. The the final pressure and the amount of heat transfer are to be determined.
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