Water Heating Time Calculator

[gtcfoadm]

Comments for the page:
https://gettopics.com/en/calc/water-heating-time

[Marcel]

the constant for the heat capacity of water is 4186.8, not 4168.

[Mike]

A continuous flow calculator for instant water heaters would be useful, e.g. DHW gas boilers, electric showers, so that temperature rise for a given flow rate could be calculated, or input power needed to achieve a target Δ° at a particular flow rate, etc.

[Jawad]

Thanks for the calculator! very helpful

[Bryce]

Great estimator tool. It obviously varies on ambient, pool thermal insulation, covering, etc.
GREAT TOOL.
thanks.

[gtcfoadm]

Marcel wrote:
the constant for the heat capacity of water is 4186.8, not 4168.

Hi Marcel

Thank you for your comment.
The tool uses 4186, but it was misspelled in the text. It's fixed now.

But you will find other values as well in the Internet. This "constant" is different at different temperatures. So, it is not really a constant. It is only a constant if you can live with some inaccuracy. I had a look at some tables and I have seen values of 4213 (1°C, 34°F) then going down to 4178 (35°C, 95°F) and up again to 4210 (95°C, 203°F). For most practical purposes, the tool should be accurate enough.