Energyauditfor Electrical Equipment of a Private Resident
Energyauditfor Electrical Equipment of a Private Resident
Anenergy audit refers to surveying techniques as well as analysis ofenergy usage within a particular facility or building and anyequipment in such a building or facility. It incorporates detailedlists of all measures that aim at achieving effective and efficiencyuse of energy and financial analysis for all identified measures(Krarti, 2010). It is advisable to create a diagram that clearly howeach device consumes energy after the completion of an energy audit.After the energy auditing process is completed an energy saving planshould be implemented.

Equipment

Equipment: power monitor, thermal leak detector

Cost of the equipment: power monitorabout 120 dollars
Thermalleak detector about 55 dollars

Procedure for the energy auditing

Proper understanding of electricity bill: review of total electricity used and the cost of total electricity.

Taking a roll of all appliances that consume energy: it should include all large appliances and electrical gadgets as well as the counting of all light bulbs used at home

Determination of wattage of light bulbs as well as age of appliances

Make use of power monitor to find how energy has been used in various home appliances: this involve looking for alternative wattages of light bulbs and proper inspection of how older appliances have been using energy

Comparison of energy consumption to moreefficient appliances that are used in the modern industry: power monitor help determine how current appliances consume energy while product labels or company website provide useful information on energy consumption of modern appliances

Investigation of any excess energy that might have been wasted: total energy that is used by both current house appliances and modern efficient appliances

Lay down all cost that may be required in the upgrading appliances (any cost that may be required in purchasing all new appliances needed for substantial energy savings)

Determination of any time endured until money is saved: it is good to note that any time fueled at the usage of new appliances before savings in energy is reflected in the amount money saved
4.Energy Consumption Summary of Energy Consuming Devices
Lightsinformation
Lights 

No. of Light bulbs (unit) 
10 
Each bulb power consumption(Watt) 
70 
Usage hours per day per bulb (hr) 
8 
No. of days per month (day) 
30 
EnergyUsage of All Current in Using Electrical Appliances
Device 
Energy Usage/Hour (kWh) (1) 
Daily Usage Hours (2) 
Energy Consumption of Current Appliances (kWh) (3) = (1)×(2) ×30 

1 
Lights 
2 
5.0 
300 
2 
Washer 
2.05 
1.0 
61.5 
3 
Dryer 
2 
1.0 
60 
4 
Air Conditioner 
1.1 
6.0 
198 
5 
Refrigerator 
1.1 
23.9 
789 
6 
Microwave 
2 
0.4 
24 
7 
Computer 
.55 
12.0 
198 
8 
Stove 
2 
2.0 
120 
9 
Dishwasher 
1.7 
1.2 
61.2 
10 
Toaster 
0.09 
0.1 
0.27 
11 
Electric Water Heater 
3 
2.7 
243 
12 
Small Appliances (Iron, toaster oven, etc.) 
0.25 
0.17 
1.28 
Total Energy Usage/Month (kWh) 
1756.25 
Apower monitor was used to measure usage per hour for all appliancesexcept electric dryer, lights, and water heater dryer since they arewired directly.
of Energy Usage and Cost
Electric Bill 

  

Electricity Used 
 1756.25 kWh 
Cost ($) 
 $175.5625 
EnergyUsage/Month = Energy Usage/Hour × Hours of Usage/Month
Costof Energy Usage/Month = Energy Usage/Month×$/kWh
EnergyUsage Consumption with Energy Efficient Appliances
Appliances 
Age(or yr) 
Energy Consumption of Current Appliances (kWh) (from (3) of Table 2) (1) 
Energy Consumption of Energy Efficient Appliances (new) (kWh) (Appendix B) (2) 
Cost for Purchasing Energy Efficient Appliances ($) (3) 
Excess Energy (kWh) (4) = (1)(3) 

1 
Lights 
10 
300 
80 
40 
220 
2 
 Washer 
15 
61.5 
10 
650 
51.5 
3 
 Dryer 
15 
60 
54 
500 
6 
4 
 Air Conditioner 
10 
198 
67 
330 
131 
5 
 Refrigerator 
20 
789 
50 
1300 
739 
6 
 Microwave 
12 
24 
11 
150 
13 
7 
 Computer 
1 
198 
108 
850 
90 
8 
 Stove 
15 
120 
80 
650 
40 
9 
 Dishwasher 
20 
61.2 
40 
600 
21.2 
10 
 Toaster 
5 
0.27 
0.11 
50 
0.16 
11 
 Water Heater 
5 
243 
100 
300 
143 
12 
 Small Appliances 
10 
1.28 
1.08 
250 
0.2 
  
Total 
1756.25 
301.19 
1455.06 
Bylooking at the column that have values for excess energy used andcomparing the amount of energy used by existing appliances with thenewer energy efficient appliances it is possible to determine wherethe potential for energy savings exists. If all appliances in thehouse were replaced with energy efficient appliances, energyconsumption would decrease from 1756.25 kWh to 301.19 kWh hence, thepercentage energy reduction would be 82.9 %.
5.Calculating Payback Time
PaybackTime refers to the total time endured or consumed until money issaved for each and every single appliance. This is equivalent to(cost of purchasing new appliance) / [(former monthly cost) – (newmonthly cost)] = # of months (Abbi & Jain, 2011)
Total Replacement Cost =Costfor purchasing new appliance (including sales tax and delivery)
EnergyCurrently Used = Monthly Energy Consumption (PresentAppliance/Measure by Power Monitor)
Energy used by new energy efficient appliance = Energy Consumptionfrom Energy Star Appliance/Energy Guide Sticker
ExcessEnergy = Amount of energy currently used – Amount used by modernappliances
PaybackTime for Various Appliances
1 
 Lights Calculating the payback time for the replacement incandescent light bulbs with energy efficient light bulbs: Replacement Wattage: 100 W/bulb Number of Light bulbs: 20 Cost = (# of bulbs) * (price per bulb) Cost = 20 x $2.50 Cost = $50.00 Monthly cost of energy by incandescent light bulbs is 300 kWh x $0.1 kWh = $30.00 Monthly cost of energy used by energy efficient light bulbs is 80 kWh x $0.1 kWh = $8.00 Monthly Energy Savings = Cost of energy for old bulbs – Cost of energyfor new bulbs Monthly Energy Savings= $30.00 – $8.00 Monthly Energy Savings= $22.00 Payback Time = Cost of light bulb replacement /Monthly Energy Saving Payback Time = $50/$22 Payback Time = 2.27 months 
2 
  Washer Cost of the energy used by the old washer: 61.5 kWh x 0.1 $/kWh = $6.15 Cost of energy used by new energy efficient washer 9.1 kWh x 0.1 $/kWh = $1.00 Payback time = Cost of New Energy Efficient washer/Monthly Saving of Energy: Payback time = $650/$6.15 – $0.91 = 104 months (8.7 years) 
3 
 Dryer Cost of the energy used by the old Drier: 60 kWh x 0.1 $/kWh = $6.0 Cost of energy used by new energy efficient dryer 54 kWh x 0.1 $/kWh = $5.4 Payback time = Cost of New Energy Efficient dryer/Monthly Saving of Energy: Payback time = $500/$6.0 – $0.91 = 77.93 months (6.5 years) 
4 
 Air Conditioner Cost of the energy used by the old air conditioner: 198 kWh x 0.1 $/kWh = $19.8 Cost of energy used by new energy efficient air conditioner: 67 kWh x 0.1 $/kWh = $6.7 Payback time = Cost of New Energy Efficient Air Conditioner/Monthly Saving of Energy: Payback time = 330/$19.80$6.7 = 9.97 months 
5 
 Refrigerator Cost of the energy used by the old refrigerator: 789 kWh x 0.1 $/kWh = $78.90 Cost of energy used by new energy efficient refrigerator: 50 kWh x 0.1 $/kWh = $5.0 Payback time = Cost of New Energy Efficient Refrigerator/Monthly Saving of Energy: Payback time = 1300/$78.90 $5.20 = 11.5 months 
6 
 Microwave Cost of the energy used by the old microwave: 24 kWh x 0.1 $/kWh = $2.40 Cost of energy used by new energy efficient microwave: 11 kWh x 0.1 $/kWh = $1.1 Payback time = Cost of New Energy Efficient microwave/Monthly Saving of Energy: Payback time = 150/$2.40$6.7 = 55.8 months (4.7 years) 
7 
 Computer Cost of the energy used by the computer: 198 kWh x 0.1 $/kWh = $19.8 Cost of energy used by new energy efficient computer: 108 kWh x 0.1 $/kWh = $10.8 Payback time = Cost of New Energy Efficient computer/Monthly Saving of Energy: Payback time = 850/$19.80$10.8 = 32.13 months (2.7 years) 
8 
 Stove Cost of the energy used by the old stove: 120 kWh x 0.1 $/kWh = $12.0 Cost of energy used by new energy efficient air conditioner: 80 kWh x 0.1 $/kWh = $8.0 Payback time = Cost of New Energy Efficient stove/Monthly Saving of Energy: Payback time = 650/$12.0$8.0 = 796.17 months (66.3 years) 
9 
  Dishwasher Cost of the energy used by the old dishwasher: 61.2 kWh x 0.1 $/kWh = $6.12 Cost of energy used by new energy efficient dishwasher 40 kWh x 0.1 $/kWh = $4.0 Payback time = Cost of New Energy Efficient dishwasher/Monthly Saving of Energy: Payback time = $600/$6.12 – $4.0 = 94 months (7.8 years) 
10 
 Toaster Cost of the energy used by the old toaster: 0.27 kWh x 0.1 $/kWh = $0.027 Cost of energy used by new energy efficient toaster 0.11 kWh x 0.1 $/kWh = $0.011 Payback time = Cost of New Energy Efficient toaster/Monthly Saving of Energy: Payback time = 50/$0.027$0.011 = 1851.8 months (154.3 years) 
11 
 Water Heater Cost of the energy used by the old water heater: 243 kWh x 0.1 $/kWh = $24.3 Cost of energy used by new energy efficient water heater: 100kWh x 0.1 $/kWh = $10.0 Payback time = Cost of New Energy Efficient water heater/Monthly Saving of Energy: Payback time = 300/$24.3$10.0 = 2.35 months 
12 
 Small Appliances Cost of the energy used by the small appliances: 1.28 kWh x 0.1 $/kWh = $0.128 Cost of energy used by new energy efficient small appliances: 1.08 kWh x 0.1 $/kWh = $0.108 Payback time = Cost of New Energy Efficient small appliances/Monthly Saving of Energy: Payback time = 250/$0.128$0.108 = 1953.02 months (162.8 years) 
6.Recommendation
Individualsinterested in knowing equivalencies for emissions reduction fromrenewable energy programs or energy efficiency can make use of theenergy saved (Conway, 2008). These programs play a key role inaffecting power plants that are purchased online in order to meetrequired or necessary demand.
References
Abbi,Y.P &Jain, S. (200). Handbook on Energy Audit and EnvironmentManagement. New Delhi: TERI Press.
Conway,J. (2008). BusinessEnergy Audit and Control Practices. BusinessEconomics,15 (2), 2122.
Krarti,M. (2010). Energy Audit of Building Systems: An Engineering Approach.New York: CRC Press.