Hello everybody!

I want to show you an example how to calculate a portion spaghetti bolognese from kcal to KJ and from kcal to kWh:

Here the calculation:

kcal to KJ
0.239 kcal : 1 KJ x 171 kcal = 715.481 KJ

kcal to kWh
0.00116 kWh : 1 kcal x 171 kcal = 0.19874 kWh

So now, have fun with calculating your example! :)

Julia Hartmann, M17a

I can't cook very well so I buy my meals for lunch in the supermarket. On Monday I ate 6 pcs Avocado maki. One avocado maki has 28 calories. 6 pcs has 168 calories in this case. We had to convert calories into kwh and kj. I used an online calculator.

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Claudia Betschart, BM2 TZ 19

We had to have a closer look at a daily meal. We were given the task to calculate the energy of the prepared food and to show it in the following three units of measurement: kilokalories (kcal), kilojoules (kJ) and kilowatthours (kWh).

On Monday I prepared "Tortillas" for lunch. The kids love this dish, because they can choose from various ingredients.

Calculation for one single Tortilla filled with chicken, salad, corn, cheese and sour cream:

290 Kalories (kcal)  --> 1214.172 kilojoules (kJ) --> 0.33727 kilowatthours (kWh)

To calculate these three units I used an online calculator. Klick here to find out.

Are you interested to learn more about above mentioned units? Check out following links:

Calories (Wikipedia) / Joules (Wikipedia) / Kilowatt (Wikipedia)

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Jeannine Herren, BM2 TZ19

We had the task to calculate the energy of a meal our choice, from kcal to kJ and kWh. Sunday is "brunch-day"! So i've chosen some delicious American-Style Pancakes: More...

Our exercise was to convert the amount of kcal of a daily meal into kJ and kWh.

I decided to calculate the amount of kJ and kWh of a portion "Rice Casimir". Here you can find the recipe,
I used: recipe "Rice Casimir"

Here you can find my calculation:

amount of kcal = 723
0.00116 kWh = 1 kcal  ->  723 * 0.00116= 0.83868 kWh
4.19 kJ = 1 kcal   ->  723 * 4.19 = 3'029.37 kJ

For the calculation I used the following data:

Energieeinheiten

Wärmemenge

Einheit der Wärmemenge = Joule (J = N m), vormals Kalorien (kcal)

1 Joule (J) = 1 Wattsekunde (Ws)
3,6 kJ = 3.600 Joule (J) = 1 Wattstunde (Wh)
3,6 MJ = 3.600.000 Joule (J) = 1 Kilowattstunde (kWh)

Umrechnungstabelle:
1 kWh = 860 kcal = 3.600 kJ (=3,6 MJ)
0,00116 kWh = 1 kcal = 4,19 kJ
0,278 kWh = 239 kcal = 1 MJ

Leistung

Definition: Energie pro Zeiteinheit
Einheiten der Leistung: Watt (W = J/s)

Wärmeeinheiten (WE) = kcal/h

Umrechnungstabelle:
1 kW = 860 kcal/h = 860 WE
1,16 kW = 1 Mcal/h = 1.000 WE

You can find this data on the following website: Energy units

Tamara Keller, BM2 Teilzeit 2019

Here is my example, how to calculate kcal to kWh and kJ, on an everyday Food.

1 portion rice witch vegetables:

calculation:

313 kcal * 4.19 kJ = 1311.47 kJ

313 kcal / 860 kcal = 0.363953488 kWh

For the calculations i used the following link:

Energieeinheiten (agrarplus.at)

Rahel Künzle, M17a

Hello everybody!

We wanted to inform you, that there will be an energy day in zürich.
The ETH organises an energy day. The energy day takes place on tuesday, 10. december 2019 from 9 o' clock in the morning until 18 o' clock in the evening.

There will be interesting activities like diffrent presentations or discussions.

If you are intersted please take a look on their website.

Here you can find the link to their website: ETH energy day 2019

Jeannine, Matthias, and Tamara, BM2 Teilzeit 2019

Electricity production by wind is becoming more and more popular. In the future, wind power should become an important pillar of renewable electricity production, but how does wind energy work?

The wind sets the individual rotor blades on the wind turbines in a rotary motion. This drives a generator that produces electricity. Physically speaking, the kinetic energy of the air flow is converted into electrical energy.

This was one question, we reaserched and answered with our presentation about wind energy. Our exercise was to give our classmates some more information about wind energy.

If you are intersted to get further information about wind energy please take a look at our presentation.

Here you can find our presentation:

Renewable Energy Carriers_Wind_Energy.pdf (1,92 mb)

Jeannine, Matthias and Tamara, BM2 Teilzeit 2019

Hello everyone

In Task 4 it's our excercise to calculate an everyday example of food from kcal/kJ to kWh. More...