Team: Devin Stettler, Luca Napolitano, Jan Tall
A single-family household has to pay a base fee of 20 CHF a month for their energy. For each kWh which they used, they have to pay 0.19 CHF.
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Team: Zeynep and Nicole
How many kWh will a television use per year?
Try to find out the solution with the following information: More...
How much energy does a vacuum cleaner need, if it has the following data:
Power consumption: 1600 watts
Usage per day: 30 minutes
This makes 0.8 kWh/day.
How many kWh will it use per year?
by Seraina and Anna
General information
The simple definition for power is P = E / t
E = energy
P = power (watts)
T = time
A 1000 watts is 1 kW. If you use a device that consumes 1 kW for one hour, you have used 1 kWh (kilowatthours). That is the unit an electricity company will bill you with.
If we consider 1 kWh costs CHF 0.20, how much does it cost you to run a 2000 W oven for 45 min?
Written by Kolja and Michael
For our post we choosed a regulare dishwasher. 1000 watt is 1 kwh. The kilowatt-hour is a composite unit of energy equal to one kilowatt (kW) of power sustained for one hour
By Silvan and Luana
Team: Nina + Elena
How much kWh does our class (24 students) consume if every student works with her/his laptop during the 3 (hours) T&U lessons? And how much does it cost?
Try to solve the calculation with these numbers:
Device: laptop
Power: 60 kWh
Duration: 72h (24 students x 3h)
Electricity price: 0.22 cents for 1 kWh
Team: Sangeetha & Yllza
power consumption: 1500 watts
usage per day: 10min (for example)
This makes 0.1 kWh/day
How many kWh will it use if you use the hair dryer for 24hours?
A laptop has always been used for 3 hours a day. It used 50 Watts = 0.15 kwh per day. The costs for 1kwh is 0.20 Francs
Now because of the corona virus we have to use the laptop for 7 hours a day. How many kilowatt hours per day is that and how much does it cost per day?
You can find the solution on the one note.
Team: Lucas and Sandro
Team: Matteo and Alex
For our calculation we have chosen a microwave oven with 1000 watt power. The picture below shows the energy consumption of a microwave oven that is used for 6 minutes per day.
This is the formula to calculate the value: E(kWh/day) = P(W) × t(h/day) / 1000(W/kW)
calculator
The refrigerator is used for our Energy consumption calculator example. 1000 watt is one kilowatt.
Kilowatt is a unit for energy and work. We took the refrigerator because it is used daily and is switched on during day and night.
Energy calculator
This post is made by Diego and Luca.
A PS4 uses 89 watts per hour. 1 kilowatt costs 30 cents. How many swiss francs do we need to pay, if we use it for 5 hours a day in the next 6 weeks?
You can find the solution on the onenote.
This group project was made by Giorgio, Marco and Dominic.