Re: [EnergyPlus_Support] two systems

["Michael J. Witte" <mjwitte@xxxxxxxx>]

If the heating and cooling setpoints are different, then there will be a 
difference in heating energy consumption when the zone requires cooling.  The 
consumption should be the same when the zone requires heating.  To compare 
heating output, report "Baseboard Heating Energy (or Rate)" and "Total Water 
Heating Coil Energy (or Rate)".  To compare heating supply input, report 
"Purchased Hot Water Energy (or Rate)."  If the water flow rates for the two 
systems are different, then the "Pump Heat To Fluid (or Energy)" will also be a 
small factor.

Mike


On 18 Aug 2004, at 4:19, pizzaalan wrote:

> 
> Dear all,
> 
> I have two systems, one is VAV with reheat coil, another is VAV with 
> baseboard heater. Assume that they are in the same location and same 
> construction for the building. It means that the heating loads are 
> same no matter what system is choosen. If I use purchased hot water 
> only for heating, "purchased hot water energy " outputs for two 
> system should be same, is it right?
> 
> Since the heat transfer algorithms for two systems are different, 
> the total HVAC energy consumptions spent by two system are not same, 
> right? Then question is what output shows the total HVAC energy 
> spend for a specific system? Thanks.
> 
> Alan 
> 
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
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> in the Files area of the Support Web Site.
> 
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> 
> 
> 
> 
> 
> 
> 
> 






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