Assignment 4
Ecological and carbon footprint and write down some suggestions
to reduce your ecological footprints without compromising your
lifestyle and answer 8 questions from the electricity bill provided
Course Code: ENV107L Sec: 25
SUBMITTED BY:
ABDULLAH BIN NIRZUN
ID-2121093630
SUBMITTED TO:
Dr. Kabirul Bashar (KBs)
Professor
Department of Environmental Science & Management
School of Health & Life Science
North South University
PART-A
My Ecological Footprint
1)Write down some suggestions to reduce your ecological footprints without compromising your
lifestyle?
Ans: Some suggestions to reduce my ecological footprints without compromising my lifestyle.
1. Use public transport or share a ride with friends or use buses and trains to reduce
pollution. Use a cycle or walk a shorter distance, which leads to reduced pollution.
2. Turn off lights and electronics when they are not in use and unplug chargers or I am not
at home to reduce power consumption.
3. Shop or buy items made from recycled or eco-friendly materials.
4. Using jute bags and reusable bags, bottles, and containers to avoid plastics.
5. When buying things like fridges or washing machines, choose models that use less
energy.
6. Grow indoor plants or maintain a small garden to improve air quality and reduce carbon
emissions.
PART – B
Question 1: How much did the consumer pay for electricity for the two months (Include both
including and excluding vat)?
Ans:
• For the month of Aug 2024:
The total Bill, including VAT, was 5626.71 Taka
The total Bill, excluding VAT, was 5358.77 Taka
• For the month of oct 2024:
The total Bill, including VAT, was 4309.66 Taka
The total Bill, excluding VAT, was 4104.44 Taka
Question 2: How many kilowatt hours of electricity did the household use in those months?
Ans:
• For the month of Aug 2024:
The household consumed 581 kilowatts.
• For the month of Oct 2024:
The household consumed 482 kilowatts.
Question 3: What is the cost you pay per kilowatt hour? (You have to divide the “Total Energy
Charge” by “KWH Consumed”.)
Ans:
• For the month of Aug 2024:
Cost per kilowatt hour:(5148.77/581) = 8.86 Taka
• For the month of Oct 2024:
Cost per kilowatt hour:(3894.44/482) = 8.08 Taka
Question 4: Can you tell from the bill if any or all of your electricity comes from renewable
energy sources? (You may pay extra to ensure a portion of your electricity come from renewable
resources.)
Ans: No, the bill does not provide any information about whether the electricity comes from
renewable energy sources. It does not clarify whether the energy comes from renewable or
nonrenewable sources. Without this information, it is impossible to determine the type of energy
source used.
Question 5: Energy efficiency refers to completing a task using less energy input
than usual. For example, an LED light bulb produces the same amount of light as
other bulbs, but with less energy. Where do you see opportunities to become
more energy efficient at your home (mention any two techniques)?
Ans: There are two techniques to make energy efficient:
1. Using insulation upgrade: Preventing air leaks by sealing gaps in windows and doors to
stop cold air from coming in, adding insulation to walls and attics, which helps heating or
cooling system work more efficiently and saves energy.
2. Switch to Inverter Appliances: Replacing old appliances with inverter appliances
models can make them more energy-efficient and cut down on energy use. For example,
using an inverter air conditioner or refrigerator can help lower electricity consumption at
home which leads to saving energy.
Question 6: Energy conservation refers to behaviors and actions that people can do to save or
use less energy. For example, turning off the lights when you leave a room is an action you can
take that reduces the amount of electricity you use. Write down any two actions you can take to
reduce the amount of energy you use?
Ans:
1. Turn off unnecessary lights and electronic devices - Always turn off lights, fans, TVs,
and other electronics when they’re not in use. It’s a simple habit that makes a big
difference over time. For example: turn off ac when they are not in use which will reduce
the amount of energy used.
2. Use energy-efficient bulbs: Replacing regular bulbs with LED or CFL lights. These use
much less energy and last longer, saving money and reducing electricity use.
Question 7: Tawsif and his wife Kiara are in the market for a new microwave oven and a
television!
a) One microwave oven they like is energy efficient, but a bit more expensive and another one is
cheap but consumes more energy. According to you which one they should buy and why?
b) They also found an LED and LCD television for the same price. According to you which one
they should buy and why?
Ans:
a. Tawsif and his wife Kiara should buy the energy-efficient microwave because
buying energy efficient microwave could be more expensive but in long run it will
consume less electricity over time, leading to lower energy bills. So, it is cost
effective in the long run.
b. They should choose the LED television because LED TVs consume less electricity
compared to LCDs, making them a more energy-efficient choice. Even though they
cost the same, the LED TV will end up being more valuable over time due to its
substantial energy savings.
Question 8: Between the two sample bills one is for August, and another is for October for the
same household. According to you what can be the possible reasons for such a difference in the
bills for these two months?
Ans: The reason of the difference between two bills of August and October are:
1. Seasonal variation: August is typically hotter and more humid leading to increased use
of air conditioners, fans, or coolers, which consume a lot of electricity. October is cooler
as the season changes it reduces the need for air conditioning and cooling appliances,
resulting in lower electricity usage.
2. Energy Conservation Efforts: The household may have implemented energy-saving
measures in October, such as using energy-efficient appliances, switching off unused
devices, or using natural light during the day compared to august.
3. Change in Household Activity: In August, households children may be on vacation and
stayed in home or more family members might be stayed at home, increasing the usage of
appliances like tv, washing machines, electronics and kitchen gadgets. In October, they
return to regular routines and going for work there might be fewer people staying at home
during the day, reducing energy consumption.
