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[EnergyPlus_Support] Re: question about html report

Thanks for your remark, it actually does explain one part of the question. The report mentions:
PUMP HEAT TO FLUID ENERGY = 26.07 kWh

What could be the extra heat?

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad <RRaustad@...> wrote:
>
> WATER HEATER USE ENERGY = -2633 kWh
> TOTAL WATER HEATING COIL ENERGY = 2732 kWh
> 
> The difference could be pump heat.
> 
> 
> 
> On 7/12/2012 8:05 AM, Herve B wrote:
> > Yes, I agree with you.
> > So the report should provide:
> > WATER HEATER USE ENERGY >= TOTAL WATER HEATING COIL ENERGY.
> >
> > But in my case this is the opposite:
> > WATER HEATER USE ENERGY < TOTAL WATER HEATING COIL ENERGY
> >
> > Why??
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Mário <mneves32@> wrote:
> >> Hi,
> >>
> >> If I understand correctly:
> >>
> >> WATER HEATER USE ENERGY =  represents the energy extracted from the water heater to supply the heating coil. +  Heat loss to ambient tmpereture zone.
> >>
> >> Best Regards
> >> MN
> >>
> >>
> >> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Herve Brouchery <brouchery.herve@> wrote:
> >>> Hi,
> >>>
> >>> I run a simple simulation where a heating coil, which is supplied by a water heater, is used in an air handling unit to heat a single zone. I precise that the pipes used for connexions are adiabatic so no loss between water heater and heating coil.
> >>>
> >>> Some doubts came while I looked at the html report (attached to this mail): why WATER HEATER USE ENERGY is lower than TOTAL WATER HEATING COIL ENERGY ?
> >>> Actually I would expect both variables to be equal, based on the below definitions:
> >>> Â Â  - WATER HEATER USE ENERGY represents the energy extracted from the water heater to supply the heating coil.
> >>> Â Â  - TOTAL WATER HEATING COIL ENERGY represents the energy consumed by the heating coil.
> >>>
> >>> Why such results? It is like the heating coil efficiency is greater than 1 ???
> >>>
> >>> Thanks for your help,
> >>> Herve
> >>>
> >
> >
> >
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> 
> -- 
> Richard A. Raustad
> Senior Research Engineer
> Florida Solar Energy Center
> University of Central Florida
> 1679 Clearlake Road
> Cocoa, FL  32922-5703
> Phone:   (321) 638-1454
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> 
> UCF - From Promise to Prominence: Celebrating 40 Years
>




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