Water Heater Watts Per Day
Leaving your immersion heater on all the time can be a waste of energy.
Water heater watts per day. How much electricity does. But a 1000w globe would cost 20 cents for 1 hour as it draws 10x the power 10 cents for. Electric water heaters are typically running for 3 hours a day to heat water newer more efficient models may run for only half the time during each day.
Immersion heaters are measured in kw. From above heating a gallon of water by 1 f takes 8 33 btu. Amps to va.
That sounds like a whole lot of solar panels just to power the water heater. At 3 412 btus per watt 4500 watts 15 354 btu. A typical 50 gallon electric tank runs at 4500 watts.
The energy e in kilowatt hours kwh per day is equal to the power p in watts w times number of usage hours per day t divided by 1000 watts per kilowatt. We would recommended having a timer fitted making hot water available to suit your. Per year costs are based on 2 heating cycles per day.
If the company charges 20 cents per kwh then that 100w globe costs you 20 cents to run for 10 hours 10 cents for 5 hours etc. The power company will charge you per kilowatt hour kwh. Typically a hot water heater that uses a tank will run for three to five hours per day.
When you buy an immersion heater it is given a kw rating for example 3kw or 6kw. 120 volt elements consume 1125 watts while residential 240 volt heaters use 4 500 watts. A typical water heater will use around 4000 watts.
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