Heating today vs hundred years ago
Fire and fires have existed almost since the beginning of the earth. Lightning and volcanic activity can cause forest fires at any time. Therefore, our forefathers must have known fire as a destroying force of nature. But it was only much later that they began to control fire and use it for their own purposes. Which people they were - for that we must go back to the Stone Age.More...
The history of heating
For all of us, a heated apartment has become a matter of course. Especially in winter, we do not have to worry at all, because the latest technology always offers us a warm home. But the road to this goal was long and often arduous. New technologies with more efficient and cheaper fuels were tested again and again. In the end, climate protection also played an increasingly important role. This project deals with the eventful history of heating.
- The beginnings of heating
- The first underfloor heating already existed in ancient times
- More safety and comfort through stoves and fireplaces
- From the oil crisis to ecological heating
Are you aware of how much heating energy you use in your home?
What is used for heating in Switzerland?
What are the most modern heating technologies?
Are there still outdated heating technologies from back then?
Calculation
Experts and homeowners can also roughly calculate the heating capacity using guide values. These depend on the year of construction as well as the construction method of buildings and lead very quickly to initial results in practice. The following table shows how many kW of heating power are required per square metre of living space:
Baujahr
|
bis 1958
|
180 W/m²
|
|
1959 bis 1068
|
170 W/m²
|
|
1969 bis 1973
|
150 W/m²
|
|
1974 bis 1977
|
115 W/m²
|
|
1978 bis 1983
|
95 W/m²
|
|
1984 bis 1994
|
75 W/m²
|
|
ab 1995
|
60 W/m²
|
Example calculation
A 150-square-metre detached house built in 1975 thus has a heating capacity of 17.25 kilowatts (150 square metres x 115 W/m² = 17,250 watts or 17.25 kW).
It is important to know, however, that the values given are only guide values. If old buildings have been renovated in the meantime to improve their energy efficiency, for example by insulating the exterior walls, the real values are usually lower. The heating output may then be lower.
Media
Taming the fire was one of the greatest achievements of the Stone Age. The centre of every family was the hearth, where people ate, cooked and worked. But how did the Stone Age people make fire?
For example, if you work a piece of pyrite violently with a flint, splinters jump off and ignite themselves. If they hit easily flammable material, they start to glow. Blow caPublishrefully and refeed with dry shavings - this is how a fire starts.
How to make fire
Sources
(1) Geschichte der Heizung (was-war-wann.de)
(2) Gesellschaft & Religion (srf.ch)
(3) Die Wärmepumpe (heliotherm.com)
(4) Vom Lagerfeuer zur Zentralheizung (fischerfutureheat.de)
Task 2
We have an outdated heating system at home that runs on oil. Because the oil costs are extremely high, we never heat it in the summer. Another way would be to use less energy would be to ventilate the house.
Soumaya
Task 3
Rindersteak / 378 Kalorien (150g) / 1582.61 kJ / 0.000439614 kWh
Calculation
Definition - Kilowatt
It is the amount of energy that is converted within one hour at a power of one kilowatt.
Comparison
Kilowatt hour is the unit of measurement for energy - In everyday life, this is the unit for electricity and gas.
In my work, I initially only wanted to take a closer look at the impact on the environment. But the more I went into the depths of the internet, the more it made me aware of the impact on health. It was frightening to see the diseases that are circulating in the USA, for example, because this country underestimates consumption. And an unhealthy society has many negative effects on living together in this country.
Some of my texts are still in progress. I have had my partner check the texts that are ready. We still have to discuss and revise these texts together.
I had problems with the programme for my survey, so I could not finish it. I will try to solve the problem by 25 March. The experience I have had now has been very instructive. I have gained a lot of new knowledge, for example that eating meat can cause diabetes, which many people are not aware of.
- [header pic]
- [good title of the project]
- [short introduction]
- [content of our project]
- [media (images...)]
- [survey from kobotoolbox]
- [interviews with Levin]
- [analysis and opinion ]
- [mentions of the team members and collaboration partners]
Soumaya Khreiss
My colloboration partner is currently in England for an extended stay to gain new experience and further his education in his profession.
How often do you consume meat ?
Why do you eat meat ?
What meat do you prefer?
Where do you buy most of your meat from?
Have you ever considered to become a vegetarian ? If so, why ?
Would you go meat free for a day?
Do you think meat consumption improves your health ? and why ?
What might deter you from regularly consuming more meat free meals?
If you were to eat less meat, what would be the primary motivating reason ?