Water Heating Time Calculator

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gtcfoadm
Site Admin
Posts: 13
Joined: Tue Oct 15, 2019 4:26 pm

Water Heating Time Calculator

Post by gtcfoadm » Fri Nov 22, 2019 9:24 am


Marcel

RE: Water Heating Time Calculator

Post by Marcel » Wed Jul 15, 2020 5:17 am

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

Mike

RE: Water Heating Time Calculator

Post by Mike » Thu Sep 03, 2020 11:42 am

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

RE: Invisible Earplugs: How to Totally Hide Foam Ear Plugs

Post by Jawad » Tue Jan 05, 2021 10:46 am

Thanks for the calculator! very helpful

Bryce

RE: Water Heating Time Calculator

Post by Bryce » Wed Apr 21, 2021 11:55 pm

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

gtcfoadm
Site Admin
Posts: 13
Joined: Tue Oct 15, 2019 4:26 pm

Re: RE: Water Heating Time Calculator

Post by gtcfoadm » Tue Jun 22, 2021 6:29 pm

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.

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