April 13, 2013 Leave a comment
In the preceding post on-Less Weight Equals More Horsepower I used the comparison on how the US Automakers figured out how to make our Automobiles use less gas by lightening the vehicles weights which increased horsepower which equates into less Petrol needed for operation and how the same principles can be applied to a Buildings Energy Use and Needs. The principles I will be blogging about applies to any building-Residential or Commercial and can be used to give your Bank Account More Horsepower!
Lets start by going room by room and looking around at all the Gadgets/Appliances that are using electricity. Simple DIY Energy Audits -that anyone can perform on your building. Keep in Mind the Following two bullet points when Inspecting the Gadgets and Appliances.
- What Gadgets or Appliances in your building are always on and consuming energy? This is Vampire Power [i].
- Rule of Thumb? “ If your appliances are old enough to Vote it needs replaced with a newer Energy Star Appliance. [ii] ”
Here are examples of my energy use for my buildings for my DIY Energy Audit Home Office Location (Home Office).
I performed a Room by Room walk-thru inspecting taking notes of everything that used electricity. (When I’m performing a Computerized Energy Audit using Equest Software I log the information into the program and it does the math for me plus outlines areas for improvement with ROI for all costs involved.) But we’re going Old School on this Energy Audit and you will only need a basic calculator or pen and notepad.
The Benefits of Performing an Old School Energy Audit by hand and figuring things by hand is the A-Hah Moment of Energy Use- you will gain a greater understanding of:
watts of energy, kilo watts, how watts and kilowatts translate into dollars.
|Location||Time in UseHrs / day||Electricity UsedMeasured in watts||Vampire PowerYes or No||
FORMULA FOR ESTIMATING ENERGY CONSUMPTION
(Wattage × Hours Used Per Day= total watts )
|Cost to Operate in St Louis using Ameren UE combined electricity rate plus service fees =.11/w1 kilowatt (kW) = 1,000 Watts (total watts ÷ 1000 = Daily Kilowatt-hour (kWh) consumption) x $.11= Amount in $.|
|Bedroom 1(hours per day spent sleeping 8.7)|
|2-Lights- 3 bulbs ave 65 W||4||260||no||1040||1.4|
|Bedroom 2 [which has dual functions in my Residence as Home Office and
|Lights-1 overhead with 2 light bulbs-2 desktop lights Ave W of 40×3= 120 w||4||120||no||480||0.48|
|Computer [i] 1- 200w=800w||4||200||no||800||0.8|
|Laptop Computer 2||1||60||no||60||0.6|
|Internet Access [ii]||24||1.22||yes||29.28||0.03|
|Living Room-Lights w/2 Situational Lights 120 w Total||2||240||no||480||0.48|
|Living Room 1 Overhead w/ 2 light bulbs 120w total||2||120||no||240||0.24|
|KitchenGas Stove with Pilot light Zero Electricity DemandRefrigerator Number 1 in-use 100%
Wall Clock- Batteries Zero Electricity Demand
TYPICAL WATTAGES OF VARIOUS APPLIANCES
Here are some examples of the range of nameplate wattages for various household appliances
FORMULA FOR ESTIMATING ENERGY CONSUMPTION-Use this formula to estimate an appliance’s energy use:
- (Wattage × Hours Used Per Day) ÷ 1000 = Daily Kilowatt-hour (kWh) consumption
1 kilowatt (kW) = 1,000 Watts
Multiply this by the number of days you use the appliance during the year for the annual consumption in kWh per year.
ESTIMATING ANNUAL COST TO RUN AN APPLIANCE
Multiply the annual consumption in kWh per year (that you calculated above) by your local utility’s rate per kWh consumed to calculate the annual cost to run an appliance. Note: To estimate the number of hours that a refrigerator actually operates at its maximum wattage, divide the total time the refrigerator is plugged in by three. Refrigerators, although turned “on” all the time, actually cycle on and off as needed to maintain interior temperatures.
(200 Watts × 4 hours/day × 120 days/year) ÷ 1000
= 96 kWh × 11 cents/kWh
Personal Computer and Monitor:
Watts + 150 Watts) × 4 hours/day × 365 days/year] ÷ 1000
= 394 kWh × 11 cents/kWh
What is the Best Defense to fight these upcoming high summertime cooling bills? Energy Conservation is the best defense and will provide the Fastest ROI- Return on Investment for your $Money$.
ii rules of thumb on Energy Conservation as taught by ICast .