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‘Energy Audit’ In The Global Institute Of Sustainability’s 3rd Floor Lounge.

Question

Activity:

You will be conducting an ‘energy audit’ in the Global Institute of Sustainability’s 3rd floor lounge. The results you generate will serve to inform your audience, the faculty, staff and students utilizing the space, and advise them on their actions. When you are analyzing your results, you may find you are able to recommend improvements to reduce their impacts. Be careful to observe where behavioral and/or technological adjustments can be made.

Assignment: 

You will be preparing an energy audit report to complement the in-class energy audit activity. Please write a 1-page report summarizing the findings of the activity. In your report, spend less time on the ‘process’ of the audit; rather be sure to emphasize the implications of energy audits. This may include commenting on the consumption patterns in the room, the impacts of choices made by both building planners and building occupants and the potential improvements you identified. Use the rubric to gauge your report writing. 30% of your grade will be allocated to the written communication rubric (available on Bb).

70% of your grade will be allocated to the Energy Audit content rubric.

Energy Audit Content Rubric:

 
Points Possible
Points Earned
Part 1: Inventory
 
 
1. Identify basic room statistics (1 point per footprint, volume)
5
 
2a. List items that consume power and for each item listed, determine power in various modes (10 points for min 10 items including the modes, 10 points for listing power for each item)
20
 
2b. Estimate how much each item is used, on a average daily, weekly, and yearly basis (5 points per each daily, weekly, yearly calculations)
15
 
3. Generate a yearly total electricity consumption value for each user.  Report this value across various denominators (1 point each per footprint, volume, number of users for day, number of users per peak, 1 point for answering in kWh)
5
 
Part II: Improvement Analysis
 
 
1. Figure out how much the power consumption in the room costs per year, based on SRP’s EZ-3 plan. Compare this to SRP’s Time-Of-Use plan. (5 points per writing down EZ-3 hour and price data, 5 points per writing down Time-Of-Use hour and price data, 8 points for calculating power on both plans, 2 points for commenting on results)
20
 
2. Create a list of potential improvements (reductions in use) for the items you listed in your inventory. (5 points for listing min. 2including supply side or demand side))
10
 
3.  Figure out how much each of these improvements (min. 2) would cost, how much energy it would save and what the payback period for that improvement would be.  Report the total power and economic savings associated with the improvements. (5 points for listing improvement costs per 2 items, 5 points for energy savings, 5 points payback period, 10 points for commenting on the feasibility & recommending one or both of the improvements)
25
 

 

Part 1: Inventory

Record basic statistics for the room: footprint, volume, number of users from 8AM-1PM, 1PM-3PM, 3-6PM, 6-8PM and 8PM-8AM.

Utilizing the table below, list all the items that consume power. Do not forget non-obvious lights, fans and appliances that are built into the walls.

  • For each item, determine its power in various modes. An example is listed in the table (light on vs. light off). For many products power consumption will either be listed on the back as Watts (W) or as separate Voltage and Current values (V, A). You may use the Kill-A-Watt meters to assist you. Be sure to include phantom load!  (If you do not know what this is, search Wikipedia.) (min. 10 total for credit, including various modes of operation)
  • Estimate how much each item is used on a average daily, weekly, and yearly basis, taking into account that different items might have different modes (charging, sleeping, off, on, etc.), or consume more power in different stages of operation.  [Note: answer needs to be in kWh]

Put all of this information into the table below. 

Device
Power Used (watts)
Daily Use (hours)
Weekly Use (hours)
Yearly Use (hours)
Yearly Energy Use (kWh)
Ex. CFL light (on)





Ex. CFL light (off)







































































 

3.     Generate a yearly total electricity consumption value.  Report this value across various denominators, such as footprint, volume, number of users for entire day and number of users for highest peak use time. [Note: answer needs to be in kWh]

Part II: Improvement Analysis

Figure out how much the power consumption in the room costs per year, based on SRP’s EZ-3 plan. Compare this to SRP’s Time-Of-Use plan. You need to obtain data on peak/non-peak hours and price/kWh for peak/non-peak hours for EACH plan. To do this, visit https://www.srpnet.com/prices/home/tod.aspx. Be sure to comment on the differences in cost between the two plans, if any exist. 

Create a list of potential improvements (reductions in use) for the items you listed in your inventory.  There should be a minimum of 2 improvements, 1 behavioral and 1 technological, but additional improvement suggestions are welcomed. Be sure to comment on the implementation 2 of these improvements. 

Figure out how much each of these improvements (min. 2) would cost, how much energy it would save and what the payback period for that improvement would be.  Report the total power and economic savings associated with the improvements. Be sure to comment on the feasibility of these improvements. Would you recommend one over the other or both?

Part III: Carbon Emissions

Determine your annual CO2 emissions in tons of CO2/year from the use of this room.

Helpful facts/assumptions from Monday’s lecture:

  • The efficiency in a coal generated electricity grid is 32%
  • Assume all power is generated by coal
  • 1 Watt = 1 J/s  (a Watt used for 3600 seconds is a Watt-hour)
  • 1 J = 0.0095 BTU = 0.0024 Calories
  • In 100% Efficient System 1 KWh = 3,413 BTU
  • 1 ton of coal = 20,754,000 BTU
  • Carbon content of coal: 25.14 Tg C/QBTU
  • And lastly fraction Oxidized: 0.99
  • 1 mole of CO2 is 44 g
  • 1 mole of C is 12 g
Solution

Title: ‘Energy Audit’ In The Global Institute Of Sustainability’s 3rd Floor Lounge.
Length: 2 pages (507 Words)
Style: MLA

Preview

Energy audit

The average dimensions of the room are 30 by 30. The number of users varies depending on time of the day as given below.

8AM-1PM – 5 users

1PM-3PM – 10 users

3-6PM – 7 users

6-8PM – 10 users

 8PM-8AM – 3 users

In the room, there are items that consume power as shown in the table below

DevicePower Used(Watt)Daily use(hours)Weekly Use (hours)Yearly Use (hours)Yearly Energy Use (J)Yearly Energy Use (KWh)
ONOFFONONONONON
IPhone 56.7015260.762880841746.69aa
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