QUIZ 2 The quality of steam at 7 MPa and enthalpy of 2600 kJ/kg: 0.526

Slides:

Advertisements

Similar presentations

Use of Steam Tables Saturated Vapor or Liquid

Advertisements

Liquid-Vapor Equilibrium HL. Vapor Pressure Vapor pressure- the pressure of the vapor as a result of evaporation in a closed container.

MOLLIER DIAGRAM.

Energy Conservation(cont.) Example: Superheated water vapor is entering the steam turbine with a mass flow rate of 1 kg/s and exhausting as saturated steamas.

Example 1 - Superheat Rankine Cycle

ENGR 2213 Thermodynamics F. C. Lai School of Aerospace and Mechanical

ENGR 2213 Thermodynamics F. C. Lai School of Aerospace and Mechanical Engineering University of Oklahoma.

Weather Water in the Atmosphere May 14, Precipitation Precipitation is any form of water that falls from a cloud. Water vapor is the source of all.

EXERCISE 1 CHAPTER 12.

Heating at constant pressure. T-v curves for a range of pressures.

Humidity First let us consider five humidity variables

Pure Substances Physics 313 Professor Lee Carkner Lecture 18.

The Nature of Liquids. A Model for Liquids According to the kinetic theory, both the particles that make up gases and liquids have motion. While particles.

What are the three common states of matter? Solid, plasma, liquid Liquid, Gas, Plasma Solid, Liquid, Gas None of the above.

Water Vapor and Humidity in the Atmosphere. Vapor Pressure The vapor pressure (e) is the pressure exerted by the water vapor molecules in the air. As.

EGR 334 Thermmodynamcis Chapter 3: Section 15

Partial Evaporation Example 1/31/2007. Shell and Tube Heat Exchanger.

Thermodynamics of Phase Change from Liquid to Vapor Description of most bountiful State of Matter ….. P M V Subbarao Professor Mechanical Engineering.

1 Suppose that 1 gram (g) of Material A, initially a liquid, is kept in a cylinder fitted with a piston at a constant pressure of 1 atmosphere (atm).

Vapor Pressure and Boiling Vapor Pressure – the pressure exerted by a vapor in equilibrium with its liquid state. Vapor Pressure – the pressure exerted.

1 So far… We’ve developed a general energy balance We’ve developed a general material balance We’ve only actually looked at systems that are under steady.

Steam Engine Sliding valve Steam enters chamber from left, leaving from right both valves closed, piston moves to the right Steam enters from right, leaving.

Saturation = filled to capacity

Entropy of a Pure Substance Entropy is a thermodynamic property, the value of entropy depends on the state of the system. For example: given T & P, entropy,

ENGR 2213 Thermodynamics F. C. Lai School of Aerospace and Mechanical Engineering University of Oklahoma.

Heat Diagram of H2O.

Changes in State o Vapor Pressure ▫observation ▫definition ▫temperature dependence o Changes in State ▫enthalpies ▫heating curves o Phase Diagrams ▫special.

Groundwater The zone of saturation is the depth below Earth’s surface at which groundwater completely fills all the pores of a material. The water table.

 What is Evaporation?  What is Boiling point?  Comparison between Evaporation and Boiling Point.

Chapter 10, Section 4  Changes of State. Phase  Any part of a system that has uniform composition and properties.

Water in the Atmosphere. States of Matter Water vapor – gaseous form (0 to 4% by volume) Water – rain, dew, clouds, fog Ice – snow, hail, clouds.

Refrigeration Cycles (YAC: 7-13 trough 7-16)

AREN 2110: WATER PROPERTIES

Warm ups for week of Monday:  EQ: Why doesn’t gas have a definite volume?  WU: According to Boyle’s Law what does it state about.

Problems Dr. Kagan ERYURUK.

Lecture # 5 PROPERTY TABLES(cont.)

Refrigeration Cycles A Carnot cycle in reverse QL QH T s 2

ENGR 2213 Thermodynamics F. C. Lai School of Aerospace and Mechanical Engineering University of Oklahoma.

Ch. 09: Liquids & Solids Vapor Pressure. Vapor = the gaseous state of a substance that has escaped from the liquid phase e.g., ½-filled cup of coffee:

Evaporation Evaporation is the process where a liquid, in this case water, changes from its liquid state to a gaseous state. Liquid water becomes water.

Temperature and Keq Lesson # 11. How Does Temperature Change the Keq? The Keq is a mathematical constant that does not change for concentration, volume,

Water in the Atmosphere Chapter 18, Section 1. Water in the Atmosphere  Precipitation – any form of water that falls from a cloud  When it comes to.

Quiz #1 for GP II, SNME, Spring When a certain constant volume gas thermometer is in thermal contact with water at its triple point ( K)

Important Terms & Notes Feb , Energy Flow During Phase Changes of Matter Energy must be ABSORBED by matter when the phase changes from: –

Water Cycle, Cloud Formation, and Severe Weather.

IMF and water/phase changes LT 1. Which of the following substances would be expected to have the highest melting point? a. NaCl b. H 2 O c. CH 3 OH d.

Example The internal energy of a closed system can be increased by adding heat or doing work. In the following example, 1 kg of saturated liquid water.

I. Water’s Changes of State 18.1 Water in the Atmosphere  A) Precipitation is any form of water that falls from a cloud.  1) When studying the ATM, H20.

CHAPTER 13 Gas – Vapor Mixtures and Air-Conditioning.

Cloud Formation Do Now: Science Trivia Pressure Song 3 times.

Energy/Phases of Matter /Equilibrium Review Game

Thermodynamics Steam.

Thermodynamics Processes.

Steam Engine Sliding valve Steam enters chamber from

Chapter 5 The First Law of Thermodynamics for Opened Systems

Chapter 7 Entropy: A Measure of Disorder

Working with Phases and Properties of Substances

A. Phase Changes Sublimation: solid  gas. Vaporization: liquid  gas.

Phase Transition Example

Chapter 3 Properties of Engineering Working Fluid

Chapter Three: Part One

Example 3 (A poorly maintained system)

Example 1 The internal energy of a closed system can be increased by adding heat or doing work. In the following example, 1 kg of saturated liquid water.

Chapter Three: Part One

Boiling is a liquid-to-vapor phase change process just like evaporation, but there are significant differences between the two. Evaporation occurs at.

Example (A poorly maintained system)

Heating & Cooling Graphs

Latent Heat of Phase Changes

Temperature Kelvin Scale Fahrenheit Scale Celsius Scale.

Presentation transcript:

QUIZ 2 The quality of steam at 7 MPa and enthalpy of 2600 kJ/kg: 0.526 0.886 0.921 0.252

QUIZ 2 Continued 2. Half of the volume of a bowl is filled with saturated liquid and the other half is saturated vapor at atmospheric pressure. If the bowl is opened up to the atmosphere and the liquid is heated: the temperature of the liquid will increase the saturation pressure will increase the temperature of the liquid will remain constant until all the liquid evaporates the saturation pressure will decrease none of the above