nozzle lab experiment
DESCRIPTION
thermodymics Lab reportTRANSCRIPT
Steam Nozzle Experiment
Department of Mechanical and Industrial Engineering Technology
Laboratory Report
Steam Nozzle Experiment
By
AT JAFTA
(Student No -201427383)
A laboratory report submitted
in partial fulfilment of the requirements for the module
THERMODYNAMICS IV (IMT 441)
FOR THE DEGREE OF BACHELOR OF
MECHANICAL ENGINEERING TECHNOLOGY
Submitted to
Module Lecturer Mr Bakaya Kyahurwa
DEPARTMENT OF MECHANICAL AND INDUSTRIAL ENGINEERING TECHNOLOGY
FACULTY OF ENGINEERING AND THE BUILT ENVIRONEMNT
UNIVERSITY OF JOHANNESBURG
Submitted: Wednesday 11th March, 2015
DECLARATION
I .. hereby declare that this laboratory report is wholly my own work and has not been submitted anywhere else for academic credit, either by myself or another person.
I understand what plagiarism implies and declare that this report embodies my own ideas, words, phrases, arguments, graphics, figures, results and organization except where reference is explicitly made to another work.
I understand further that any unethical academic behaviour, which includes plagiarism, is seen in a serious light by the University of Johannesburg and is punishable by disciplinary action as stipulated by the university rules and regulations.
Finally, I understand that fulfilment of this laboratory task complies with the objective of the ECSA ELO 4 and it must therefore be passed. I declare that this is not the product of a group work but is my own individual work.
Name: ..
Student No: . .
Signature: ..................................................
Date: ..............................................
]
TABLE OF CONTENTS
1DECLARATION
4INTRODUCTION
41.1.Aim
41.2.Theory behind the experiment
51.3.Apparatus
7SECTION TWO
7Table 1: Recorded Pressures and Absolute Pressures
8Recorded Temperature and Atmospheric Pressure
82.1 Results
82.1.1 Sample of Calculations
82.1.2 Theoretical Calculations
92.1.3 Experimental Calculations
13REFERENCES
LIST OF FIGURES
5figure 1: Steam Nozzle Experiment Apparatus
5figure 2 : Schematic Diagram of Nozzle and Dimensions
6figure 3: Converging-Diverging Nozzle configuration
11figure 4: Ms Excel Spreadsheet sample used to draw the m/a vs absolute pressure graph
11figure 5: M/A vs Absolute Pressure graph
SECTION ONE
INTRODUCTION1.1. Aim
The aim/objective of the laboratory task is to determine the following:
The mass flow rate of steam
Critical Velocity
Critical Pressure
After the values for the mass of flow rate of steam, critical velocity and pressure are obtained, the experimental values are then compared to the experimental values then conclusions whether then values correlate or not can be made.
1.2. Theory behind the experiment
According to Eastop & McConkey, a nozzle is a duct with a varying cross-sectional area in which a steadily flowing fluid can be made to accelerate by a pressure drop along a duct.
It can be assumed that the flow through a duct is subsonic since M