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[EnergyPlus_Support] Re: Modelling Simple Heating and Ventilation Equipment

Hi Mike

My previous post refered a small building simulation, equiped with
radiators and two pre-heat ventilators. The system is supose to
maintain the 4 controlled zones  to a setpoint of 20ºC, so outside air
is preheated to 20ºC by the ventilator's heating coil, and injected at
that temperature into the zones. The radiators are responsible for the
final heating requirement adjustments, although they have priority.
The building has no cooling requirements. 

I´m comparing the results with another simulation done by H.A.P. 4.31
software. I´m trying to acquire sensitivity in order to perform future
simulations only with energyplus. I´ve manage to obtain the heating
loads with 2% between the two simulations.

I've introduced the system in order to get the autosizing results, but
I´m having hard time to figure out the excessive boiler autosized
capacity obtained from the "Report:Table". I´m expecting 30 KW of
boiler capacity, HVAC EnergyConsumption of 23626 kWh and 51027 kWh of
Miscellaneous Equipment Energy Consumption(including lights, gas and
electric equipment) all obtained with an anual simulation. However I´m
having problems with "HEATING LOAD BASED RANGE OPERATION" upper limit,
also I´m suspecting that the system is not currectly modelled. 

Can you have a look at my idf file?I´m uploading it so that you can
have a look. Your opinion will be very helpfull!

Thanks
Nuno Brandão



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