Physics Help Forum Water Heater - useful energy content

 Oct 24th 2018, 08:55 AM #1 Junior Member   Join Date: Oct 2018 Posts: 1 Water Heater - useful energy content Hi, i´m developing a project and have some questions about thermodynamics I have this table with data. And this is what variables are: -useful water flow rate (f) means the minimum flow rate, expressed in litres per minute, -useful water temperature (Tm), means the water temperature, expressed in degrees Celsius, at which hot water starts contributing to the reference energy - useful energy content (Qtap) means the energy content of hot water, expressed in kWh,provided at a temperature equal to, or above, the useful water temperature, and at water flow rates equal to, or above, the useful water flow rate. - peak temperature(Tp) means the minimum water temperature, expressed in degrees Celsius, to be achieved during water draw-off. So, I need to know what is the volume i need to take in every row of the table and is temperature. For the volume i use this formula but dont know if its correct - Volume (L) =Qtap*860/(996*Tm)*1000 For the temperature i dont figure out.. Thank's in advance!
 Oct 25th 2018, 12:50 AM #2 Senior Member   Join Date: Apr 2017 Posts: 442 I think you're making this more complex than it need be ... Just what is it you are doing ?? Building a water heater??? Give all the details ...
 Oct 25th 2018, 02:23 AM #3 Senior Member   Join Date: Oct 2017 Location: Glasgow Posts: 289 If you have plot the points in your table on a graph, the line of best fit can be compared to the formula you have to give you an indication of certain values in the formula.

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