Answer :
Final answer:
You should set your home water heater at 60 degrees Celsius. This temperature balances energy conservation, safety from scalding, and bacteria inhibition. Option 3 is correct.
Explanation:
The recommended temperature to set your water heater at home is 60 degrees Celsius.
Water heaters are typically regulated by a thermostat, which controls the temperature by switching the heater on and off. The ideal temperature allows for energy conservation while also preventing the risk of scalding and inhibiting bacterial growth.
Systems are designed to handle certain differentials in temperature, and this rating will affect how much you need to heat your home, especially in colder climates.
Additionally, the power required to maintain a particular temperature differs based on the thermal efficiency of your house.
A poorly built house requires more power to maintain a comfortable temperature than a well-insulated one. Choices about the temperature at which you set your thermostat have financial implications as more energy required means higher energy bills.
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Final answer:
The recommended temperature for a home water heater is 60 degrees Celsius. This temperature is efficient to kill bacteria and prevent scalding.
Explanation:
The water heater at home should be set ideally around option 3, which is 60 degrees Celsius. This temperature is both safe and efficient. It's high enough to kill harmful bacteria that might be in the water, but not so high that it risks scalding.
The choice of heater temperature involves understanding of temperature scales such as Fahrenheit (F), Celsius (C), and Kelvin (K). On the Celsius scale, used predominantly around the world, water freezes at 0 °C and boils at 100 °C whereas on the Fahrenheit scale, used primarily in the United States, water freezes at 32 °F and boils at 212 °F.
It's also important to consider the energy used to heat the water. The specific heat of water is 4.184 J/g °C, meaning that amount of heat energy is required to raise the temperature of one gram of water by one degree Celsius. Thus, from an energy efficiency perspective and for the safety reason of preventing water from reaching scalding temperatures, the 60 degrees Celsius recommendation stands.
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