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Re: [EnergyPlus_Support] Re: question about html report
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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