Homework # $4($Energy Sources & ConsumptioN$)$ Environmental Science

$2.(15$ points$)$ A $2,800$ sq$.$ ft$.$ house has the following energy$-$consuming devices:

Air Conditioning $($AC$)$: Two units, each $3,000W,$ running for $8$ hours per day

Water Heater: $4,000W,$ running for $3$ hours daily.

Lighting: Forty $40$ W lightbulbs, each running for $8$ hours daily.

Dryer $3,000W,$ used for $1$ hour daily.

Washer $800$ W $,$ used for $2$ hours daily.

Refrigerator. Runs continuously, averaging $700$W$.$

Dishwasher: $1,200W,$ used for $1$ hour daily.

Oven: $1,800W,$ used for $1$ hour daily.

Laptops: Three $100$ W laptops, each charging for $2$ hours daily.

TV: $200$W$,$ running for $4$ hours daily.

Microwave: $1,000W,$ used for $30$ minutes daily.

Coffee Maker. $600$W$,$ used for $30$ minutes daily.

Toaster. $700$ W $,$ used for $5$ minutes daily.

Cell Phones: Two phones, each charging for $3$ hours daily at $10W.$

Ceiling Fans: Four $50$W fans, each running for $6$ hours daily.

Task:

A$.$ Calculate the energy use for each device in kilowatt$-$hours per day $(kW\frac{h}{d}ay$ using the formula:

B$.$ Organize the results in a table with appropriate descriptive title with columns for the appliance name, wattage per appliance, hours of use per day, energy use in kWh$/$day$,$ and energy requirement in $KW\frac{h}{m}$onth $($at a minimum$).$

C$.$ If the average U$.$S$.$ residential electricity rate is $$0\mathrm{.}14$ per kWh $,$ calculate the monthly electricity bill for the house $($assume a $30-$day month$).$

D$.$ Research and describe two changes that could reduce energy use. For each recommendation, calculate the potential monthly savings. For example, replacing $40$ W lightbulbs with $9$W LED bulbs could save $$5\mathrm{.}20$ per month, cost $$1\mathrm{.}74$ per bulb, save $37\mathrm{.}2$ kWh per month, and reduce carbon emissions by approximately $19$ kg of carbon per month equivalent to the carbon sequestered by a mature tree annually, $($Amazon $2024,$

Treevitalize.com $2024).$Homework # $4($Energy Sources & Consumptioi$)$ t $50$ points

EV$300$: Environmental Science Term $2-$

B$)$

Insert table here

C$)$ If the average U$.$S$.$ residential electricity rate is $$0\mathrm{.}14$ per KWh $,$ calculate the monthly electricity bill for the house $($assume a $30-$day month$).$

D$)$

$1^{St}$ Change:

$2^{Nd}$ Change:

Answer all questions show all work and create the table with the correct units and explainations please. This is for an environmental science class.