Chapter 7
7-1
First, find longitude from Table B-1a
Then, convert Daylight Saving Time to Local Standard Time using Eq. 7-5
Next, determine the equation of time from Table 7-2
Finally, determine Local Solar Time using Eq. 7-6
The following table summarize
MEC 522
Topic 6 Chapter 8
INSTANTANEOUS HEAT GAIN
Develop Heat Gains
n Develop
an analogous method to heat loss
to estimate the building heat gains
n Heat gains will be used to determine the
required capacity of the cooling equipment
n Heat gain estimate
MEC 522
PSYCHROMETRIC
PROCESSES AND
APPLICATIONS
Overview
n
n
n
n
n
Many of the problems in processing moist air with various apparatus
result in rather complex process lines on a psychrometric chart.
The psychrometric chart is useful to analyze these pro
MEC 522
Topic 6 Chapter 8
(continued)
INSTANTANEOUS COOLING
LOAD
Instantaneous Heat Gains
Instantaneous Cooling Load on a
Forced Air Cooling Coil
n
Difference:
Sensible,
or energy, heat gains in the conditioned
space are partially convective and partly
MEC 522
WINTER DESIGN HEAT LOSS
Two Types of Heat Losses
n
n
the heat transmitted through the building
envelope
the heat required to warm outdoor air entering
the space.
losses
are transient since variations in outdoor
temperature, indoor temperature set
Name: _
SS Number: _
ME 522
Final Exam
Open Book and Notes
May 7, 2014
Problem 1. (25 points)
An 8-inch diameter 1750-rpm pump, whose performance data is given in Fig. 10-11a, is to be
used to transfer river water to a water purification plant. The design
Extra ct :
Units:
I -P
9 4 728 NEW YORK CI T4 0 4 7
N Y
W 73 58
Da te: Apr 14 ,2014 8 76 0
# hrs:
Ja n Feb Ma r Apr Ma y Jun Jul Aug S ep Oct Nov Dec
Month
Da y
Hour
DB
DP
RH
1
1
1
36
30
1
1
2
36
28 .9
1
1
3
35.1
27
1
1
4
34
26 .1
1
1
5
34
27
1
1
6
33.1
2