Living without Energy
Everyone says that we must use less energy ! But how? That is the big question.
In this article, you can read about the house of the future, which uses hardly any energy at all.....
Most houses use energy - lots of it. We use energy for heating, lighting, for running our household appliances - TV's, washing machines, fridges, and so on. In winter time, most houses use dozens of kilowatts of electricity every day, or the equivalent in gas.
The house in the photo, on the other hand, uses virtually nothing: most of the energy that it uses comes straight from the sun, the wind or the ground. This is an experimental house at the University of Nottingham, and it could be the kind of house that most people are living in fifty years from now.
During the daytime, it is rarely necessary to turn on an electric light, even in rooms without windows. Sunlight, or daylight, is "piped" through the house, into each room, through special high-reflection aluminium tubes. You can see how well they reflect light, by looking at the reflections of the faces in the picture!
At night, of course, energy is necessary - but most of this comes from the sun or the wind. The house is fitted with photovoltaic solar panels that generate electricity during the daytime, and a wind turbine power generator too; electricity from these can be used directly, or else stored in batteries, and used when it is needed.
For heating, the house uses direct solar energy (sunshine heating water that circulates through a radiator system), or geothermal energy. This takes low-level heat out of the ground, and uses a heat-pump to convert it into high-level heat for use in radiators - the same principle as a refrigerator, but in reverse.
Read the text and mark the sentences TRUE or FALSE:
1) Most houses use lots of energy .
It is necessary to turn on an electric light during the daytime .
The house in the picture is fitted with fotovoltaic solar panels.
For heating, the house use generated solar energy.
Rainwater is collected on the roof, filtered and used for all toilets? bath and showers.
Most of today's pollution will have disappeared if, one day, most people in developed countries live in such houses.
Complete the sentences.
1) Most houses use dozens of kilowatts of electricity every day or the equivalent in gas
a) in winter
b) in summer
c) all the year round
d) in winter and in summer
2) Most of the energy that the house in the photo uses comes straight from a) the sun or the ground
b) the wind or the sun
c) the ground or the wind
d) the sun, the wind or the ground
3) This is an experimental house at the University of Nottingham, and it could be the kind of house that most people are living in ...
a) fifty years from now.
b) twenty years from now.
c) fifty years ago.
d) after fifty years.
4) The house is fitted with ...... that generate electricity during the daytime, and a wind turbine power generator too; electricity from these can be used directly, or else stored in batteries, and used when it is needed.
a) wind turbine power generator
b) photovoltaic solar panels
c) batteries
5) Rainwater is collected on the roof, filtered, and used for.....
a) the kitchen.
b) for heating.
c) all toilets, baths and showers.
6) If, one day, most people in developed countries live in houses like this one ...
a) pollution will have disappeared
b) global warming may be a problem of the past.
c) most of today's pollution will have disappeared, and global warming may be a problem of the past.