SCIENCE ACTIVITY
This year in one of the Science class we have dealt with two types of
energies: renewable and non-renewable .
We have focused on their advantages and disadvantages.
Here
we show one piece of work made by : Raúl Alvarado Díaz 2ºESO B
Saving
energy
Why save energy?
· The 86% of energy that we consume, comes from non-renewable
sources.
· It is important because energy is expensive.
· When we produce energy we pollute the environment.
· It causes problems as the landscape changes, adverse effects on
living things
living (radiation, emissions, noise).
· The mode of transport, extract and consumption of this energy
affects the environment.
Tips for saving energy
Lighting
Electricity is one of the most important energy at home and
represents 18% of energy consumption in spanish houses.
There are different types of bulbs: halogen, incandescent,
fluorescent and low consumption.
Saving energy in lighting
1. Don’t use electricity if is not necesary. Use the sun
light!.
2. Painting the walls of your house with light colours will
take a more advantage of natural light.
3. Reduce the use of lights that are used solely for
decoration, such as LED bulbs garden or Christmas lights.
4. Do not leave lights on in places where we are not.
5. Replace incandescent light bulbs with low power
consumption.
Home appliances.
Before buying an appliance, you must be aware that there are 7
different types of energy efficient appliances.
To
identify these types of appliances the European Union has created the
energy label
The
energy label
classifies appliances according to their efficiency. A class A +++
appliance is very efficient and consumes a little amount of energy.
However, a class D is not very efficient.
This
is an energy label:
Refrigerator.
The refrigerator is the most important appliance in homes. But it
consume a lot of energy.
If we make an efficient and responsible energy consumption we can
reduce this consumption, which will affect our pocket and the
environment.
Saving Energy with refrigerator
1. We recommend a refrigerator Class A +++, which is more
efficient and saves more energy.
2. Do not place the refrigerator near appliances that emittes
heat, such as furnaces, to keep cold.
3. It is recommended to clean the refrigerator once a year.
Washing machine.
The washer is another very important element in our home. This
appliance has a high power consumption, but with a few simple habits
we can reduce it. It is the appliance that consume the biggest amount
of energy after the fridge and the TV. Its usage is estimated between
3 and 5 times a week.
Saving Energy with the washer.
1. A +++ class washers consume very little and wash well.
2. It is recommended to wash with cold water, 90% of the
energy used to heat the water.
3. If you can, don’t use the dryer. Take advantage of the
heat from the sun, which is free and no power is consumed!
4. There are washing machines that use a water probe, measure
the level of contamination of water and do not change until it is
needed. This type of washer saves water and electricity.
5. It is recommended to clean the filter, you save energy and
improving their performance.
6. If you buy a washing machine, buy a program to half load
and save energy.
7. You have to fill the washing machine, in each cycle is
spent between 120 and 220 liters of water.
8. The spin consumes much less power than the dryer.
Dishwasher
Today, it is rare not to find a dishwasher in a home. It is used
almost daily.
Like the washer, 90% of the electrical energy used to heat the water.
Fortunately, some dishwasher uses the heat of the last wash for
drying and this feature saves a lot of energy.
Saving Energy with the dishwasher.
1. Choose a dishwasher with a more energy efficient labeling
of the class
2. Fill the dishwasher to capacity. Do not turn it on until it
is completely full!
3. All clarify the dishes in the tap before putting them in
the dishwasher. Do not do it with hot water.
4. Try removing dry food scraps from dishes
5. If your dishes are not very dirty use a cheap or low
temperature program.
6. Use a dishwasher with a size suitable to your needs.
Small appliances.
This category includes mixers, grinders ...
Such devices usually have low power. But the appliances that produce
heat such as toasters, irons or hair dryers consumes a lot of energy.
Saving Energy with small appliances.
1. Take the heat generated by the iron for a good pile of
clothes.
2. Do not turn on a device if you aren’t going to use it.
3. Many times we can avoid the fan by simply opening the
window.Try it!
The
TV and the computer
The TV
Today in almost all the houses there is more than one TV. Its power
is not great but its use is practically constant in the home.
Televisions represent 10% of electricity consumption of Spanish
families.
The current trend is that most households acquire TVs larger screen,
more features... But those TVs consumes a big amount of energy.
A
common mistake is leaving the TV on standby
state when not in use for a while.
That state consumes a lot of energy. Its recommended turn off the TV
if you aren’t watching it.
The computer
Almost all Spanish houses have a computer, as it is a useful tool for
all family members.
The
screen is the computer’s component that consumes the biggest amount
of energy. It is recommended to purchase computers with the ENERGY
STAR label, this type of PC can turn
off the screen when it detects that you are not using the computer
and their energy is at most 15%
Saving Energy with the TV and the computer
1. Buy printers to print double-sided.You will stop
deforestation!
2. When you aren’t using a computer, turn off the computer’s
screen.
3. Use screensaver dark colors, are the least energy consuming
