[Equest-users] HVAC simulation

[Siddharth V]

Hi, 

I am currently using eQUEST to simulate the performance of a building (an 
ideal case), where in the HVAC operates at the below temperatures 24x7 for 
the whole year.

Below are the preset values: 

Heat when temp <= 74F

Cool when temp >= 76F

Ideal temp of the building is 75F

Also cool, when the outside temp >=72F


Error in Simulation: 

I always see that the total heating power consumed in Jan/Dec month 
(Winter) is lesser than that July and August Month (Summers). 

But the simulation's outside Dry Bulb Temperature (avg, min and max 
Temperature) is higher during July/August when compared to Jan/Dec month. 


If I operate the HVAC for 12x7 (7am to 7pm) for all the days, then it 
follows the seasonal pattern (heating power is higher in Jan/Dec than 
Jul/Aug). 

But I need to get the power O/P when it operates for 24x7 only! 

Please let me know as to why this error introduced, and how to rectify it! 
Or must I add some more details in the detailed edit. 



Regards,
Siddharth Venkatraraman
Tata Consultancy Services
Mailto: siddharth.v at tcs.com
Website: http://www.tcs.com
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