ARE 346N Building Environmental Systems
Homework Assignment 5
DUE: April 8, 2010
March 30, 2010
30 pts total
1. Chilled Water Storage - Electric saving from
15 pts
We learned in the first part of the course that chilled water storage can shift energy use
MENG443
HEATING VENTILATION AND AIR CONDITIONING
ASST.PROF.DR.HASAN HACISEVKI
1
2
3
4
5
6
7
8
9
10
11
12
Future trends in heat loss from dwellings
13
Heat loss due to Ventilation of Biuildings
14
Ventilation heatloss
The requirements for the provision of
Examples of Psychrometric Properties
EXAMPLE 1
Find the moisture content of air at 25oC dry-bulb temperature and 25oC wetbulb temperature.
Referring to the chart below, a vertical line is drawn upwards from 25oC drybulb temperature until it intersects at
Instructor: Prof. Dr. Uur Atikol
Fall 2013-2014
MENG245 Design Project
Solar Thermal Power Plant using Parabolic Trough Mirrors
A steam-turbine power plant, utilizing the Rankine cycle can be integrated with a solar field of
parabolic mirrors as can be se
CHAPTER 11
CONVECTION IN MICROCHANNELS
11.1 Introduction
11.1.1 Continuum and Thermodynamic Hypothesis.
Previous chapters are based on two fundamental assumptions:
(1) Continuum: Navier-Stokes equations, and the energy equation are applicable
(2) Thermody
Chapter 8: Convection in External Turbulent Flow
8.1.
Introduction
Turbulent flow is disordered, with random and unsteady velocity fluctuations; hence,
exact predictions cannot be determined.
Turbulence affects local velocity distribution, drag force, and
Chapter 9: Convection in Turbulent Channel Flow
9.1
Introduction
Laminar channel flow was discussed in Chapter 6; many features of turbulent flow are
similar
Chapter begins with the criteria for fully developed velocity and temperature profiles
Chapter Fo
CHAPTER 6
HEAT TRANSFER IN CHANNEL FLOW
6.1 Introduction
(1) Laminar vs. turbulent flow
Flow through tubes, transition Reynolds number Re D t is
Re Dt
uD
2300
(6.1)
(2) Entrance vs. fully developed region
Classification based on velocity and temperature p
CHAPTER 7
FREE CONVECTION
7.1 Introduction
7.2 Features and Parameters of Free Convection
(1) Driving Force.
Requirements
(i) Gravitational field
(ii) Density change with temperature
(2) Governing Parameters. Two parameters:
(i) Grashof number
T ) L3
g (T
PROBLEM 7.9
A vertical plate measuring 21 cm 21 cm is at a uniform surface temperature of 80oC. The
ambient air temperature is 25oC. Determine the heat flux at 1 cm, 10 cm and 20 cm from the
lower edge.
(1) Observations. (i) This is a free convection prob
PROBLEM 7.6
A sealed electronic package is designed to be cooled by free convection. The
package consists of components which are mounted on the inside surfaces of
two cover plates measuring 7.5 cm 7.5 cm cm each. Because the plates are air
made of high c
PROBLEM 7.4
In designing an air conditioning system for a pizza restaurant an estimate of the heat added to
the kitchen from the door of the pizza oven is needed.
The rectangular door is
50 cm 120 cm with its short side along the vertical direction. Door
CHAPTER 5
APPROXIMATE SOLUTIONS:
THE INTEGRAL METHOD
5.1 Introduction
Seek approximate solution when:
Exact solution is unavailable.
Form of exact solution is not suitable or convenient.
Solution requires numerical integration.
The integral method gives a
CHAPTER 2
DIFFERENTIAL FORMULATION
OF THE BASIC LAWS
2.1 Introduction
Differential formulation of basic laws:
Conservation of mass
Conservation of momentum
Conservation of energy
2.2 Flow Generation
(i) Forced convection. Motion is driven by mechanical me
CHAPTER 4
BOUNDARY LAYER FLOW:
APPLICATION TO EXTERNAL FLOW
4.1 Introduction
Navier-Stokes equations and the energy equation are simplified using the boundary layer
concept.
Under special conditions certain terms in the equations can be neglected.
Two key
CHAPTER 3
EXACT ONE-DIMENSIONAL SOLUTIONS
3.1 Introduction
Exact solutions for simple cases are presented.
Objective is to:
Understand the physical significance of each term in the equations of continuity,
Navier-Stokes, and energy.
Identify the condition
CHAPTER 3
EXACT ONE-DIMENSIONAL SOLUTIONS
3.1 Introduction
Exact solutions for simple cases are presented.
Objective is to:
Understand the physical significance of each term in the equations of continuity,
Navier-Stokes, and energy.
Identify the condition
CHAPTER 1
BASIC CONCEPTS
1.1 Convection Heat Transfer
Examine thermal interaction between a surface and an adjacent moving fluid.
1.2 Important Factors in Convection Heat Transfer
Three factors play major roles in convection heat transfer:
(1) Fluid motio
Course Code
ME 544
EASTERN MEDITERRANEAN UNIVERSITY
Department of Mechanical Engineering
Course Title
Prepared by:
I. Sezai
Advanced Heat Transfer
Credit Hours
(3,0) 3
2012-2013 Spring
I. Catalogue Description:
This course is intended as a one semester co
Chapter 1
Introduction
Ibrahim Sezai
Department of Mechanical Engineering
Eastern Mediterranean University
Fall 2015-2016
What is CFD?
CFD is to use
computer codes
to solve a wide
range of
problems in fluid
flow and heat
transfer.
ME555 : Computational Fl
Chapter 11:
Unstructured Grids
Ibrahim Sezai
Department of Mechanical Engineering
Eastern Mediterranean University
Fall 2014-2015
Introduction
When the solution domain is not rectangular Cartesian grids
cannot be used.
When the boundary does not coincide
Chapter 3:
Turbulence and its modeling
Ibrahim Sezai
Department of Mechanical Engineering
Eastern Mediterranean University
Fall 2014-2015
Is the Flow Turbulent?
External Flows
where
Rex 5 10 5
along a surface
UL
ReL
L = x, D, Dh, etc.
ReD 20,000
around a
Chapter 5
The Finite Volume Method for
Convection-Diffusion Problems
Prepared by: Prof. Dr. I. Sezai
Eastern Mediterranean University
Mechanical Engineering Department
Introduction
The steady convection-diffusion equation is
div( u ) = div(grad ) + S
Inte
Chapter 4:
The Finite Volume Method for Diffusion
Problems
Prof. Dr. Ibrahim Sezai
Department of Mechanical Engineering
Eastern Mediterranean University
Fall 2010-2011
Introduction
General transport equation is
( )
div( u ) div(grad ) S
t
For steady dif
Chapter 8: Finite Volume Method for
Unsteady Flows
Ibrahim Sezai
Department of Mechanical Engineering
Eastern Mediterranean University
Spring 2013-2014
8.1 Introduction
The conservation law for the transport of a scalar in an
unsteady flow has the general
See discussions, stats, and author profiles for this publication at: http:/www.researchgate.net/publication/259077032
A PRACTICAL METHOD FOR DETERMINATION OF
THE MOMENTS OF INERTIA OF UNMANNED
AERIAL VEHICLES
CONFERENCE PAPER SEPTEMBER 2013
DOI: 10.13140/