Archive:000/Water heating: Difference between revisions
(Created page with "This page is about hot water systems in homes & buildings. ==Types== * solar thermal panels * electric water heating * natural gas water heating ==Energy use== 49'C is considered the ideal hot water temperature. Anything hotter is a safety hazard (scalding). {{minor|If water is coming in to the building at a typical 9'C, then that's a 40 degree (kelvin) difference.}} Physics shows how much energy it takes to heat the water: {{minor|Same calculation shown in mu...") |
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|water_specificheat * waterdensity * 40 kelvin | |water_specificheat * waterdensity * 40 kelvin | ||
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|Electricity | |Electricity | ||
Revision as of 21:07, 17 May 2023
This page is about hot water systems in homes & buildings.
Types
- solar thermal panels
- electric water heating
- natural gas water heating
Energy use
49'C is considered the ideal hot water temperature. Anything hotter is a safety hazard (scalding). If water is coming in to the building at a typical 9'C, then that's a 40 degree (kelvin) difference.
Physics shows how much energy it takes to heat the water: Same calculation shown in multiple different units:
Electricity
(calculation loading)
British Thermal Units
(calculation loading)
Fuel burned to heat each gallon of water (American units)
(calculation loading)