Final Exam Engineering

Type of service: Writing from scratch
Work type: Energy auditing class (Final Exam)
Deadline: N/A
Academic level: College (1-2 years: Freshman, Sophomore)
Subject or discipline: Engineering
Title: Writer’s choice
Number of sources: 0
Provide digital sources used: No
Paper format: MLA
# of pages: 1
Spacing: Double spaced
# of words: 275
# of slides: ppt icon 0
# of charts: 0
Paper details:
Its final exam just answer the questions if you are sure about your answer 0

EST 4840/5840

Final Exam

(100 Points

  1. (30 Points) Energy Calculations

Building SF = 20,000 sf

Electric Rate:      Use MTSU Utility Rate Schedule – Seasonal Rates

Lighting:               2 watts/sf

hours of operation  = 19 hours per day

Motors:                One (1) water pump motor, 80% efficient, running continuously, operating against a load of 20kw

Two (2) fan motors, 85% efficient, running continuously, each operating against a load of 15kw

Plug Loads:         Misc. equipment totaling 0.25 watts/sf, operating continuously

For the month of April (30 days) calculate the following:

  1. a) The peak monthly electrical demand

 

 

  1. b) The total monthly energy consumption

 

 

  1. c) The load factor

 

 

  1. d) The demand balance (demand total and % for each system type)

 

 

 

  1. e) The energy balance (energy consumption totals and % for each system)

 

 

 

 

  1. f) The total electrical costs for the month

 

 

 

 

  1. g) Add a timer to the lighting system that reduces hours of operation by 7 hours per day. The cost to install the timer is $12,000.  Calculate the simple payback (SPB)

 

 

 

  1. h) Replace all motors with 95% efficient motors at a cost of $1,000 each. Calculate the simple payback (SPB)

 

 

 

 

  1. i) Would there be any concerns of double counting of energy savings if you did the ECSMs in g) and h) at the same time?

 
 

  1. (20 Points) A major university is experiencing significant growth in enrollment. In order to address the additional classes required, the administration is considering the option of either 1) building a new building or 2) scheduling additional classes in existing buildings late at night.  Considering the options from a utilities and operations point of view, what factors might be important to this decision?
  2. (20 Points) Compare and contrast the following two major motivations for energy management:

1) Saving energy

2) Saving money
 

  1. (20 Points) There is an expression in economics that states: “There are no solutions, only trade-offs”. Explain how you think this either applies or does not apply to the field of energy management and sustainability.

 

 
 

  1. (10 Points) Drawing on your experience in this class – especially using the eQuest energy modeling tool – describe how you would approach performing an energy audit on Peck Hall on the MTSU campus.

 

 

Leave a Reply