CEE 357 Aut 2012 Homework #5 Solutions
1. The energy required to vaporize 1 kg of water at 15oC (which is approximately the global
average temperature) is given in the slides as 2465 kJ, and the total amount of water
evaporated annually is 5.1 x 1014 m3.
Introduction to Environmental Engineering
MID TERM EXAM
October 29, 2007
2 questions by Prof. Christof Holliger (30 marks)
3 questions by Prof. Marc Parlange (30 marks)
1 question by Prof. Andrew Barry (15 marks)
Total = 75 marks
2 Exam Questions of Pro
1) The quality and purity of water that is returned to our environment from industry is
harming the environment.
a) Is there a safer way to treat waste water and return it so that it benefits the earth
BEE 192 « Ecological Engineering Name: 4 24%; #63?)
Midterm Exam 2011
1. Who is considered to be the father of ecological engineering?
2 What is a primary source of energy for all living organisms? Explain how this form of
energy is tran
Department of Civil and Environmental Engineering
CE 321: Introduction to Environmental Engineering
SOLUTIONS - Due: Monday, 11/29/10 - SOLUTIONS
1) By volume the concentration of oxygen in air is about 21 %. Find t
~v. ~ ~ S~<,~
:5- - - I ,
1.8 - - - - - - - - - - - -:- - - -
=- - -
FIGURE 1.8 The contaminant concentration profile for Example 1.7.
1.4 ENERGY FUNDAMENTALS
Just as we are able