[Equest-users] capacity smaller than secondary demand

Shaun Martin smartin at shaunmartinconsulting.com
Mon Dec 3 08:11:50 PST 2012

Hi, thanks,


This is what is confusing me.  The PS-D Circulation Loop Loads report says the net loop load is 251 kBtu/h.  The heat pump and boiler loads in the PS-C report agree with this.   Nothing in the SIM file, except for this warning message, points to a problem.


For LEED, messages such as this have to be explained.   It just raises the question of how many of the other warning messages are real.  




From: 冷面寒枪 [mailto:503271081 at qq.com] 
Sent: 3-Dec-12 4:35 AM
To: Shaun Martin; equest-users
Subject: Re:[Equest-users] capacity smaller than secondary demand


The Secondary number comes from the Loop design Load。you can see the PS-C report.



------------------ Original ------------------

From: "Shaun Martin"; 

Date: 2012年12月1日(星期六) 上午8:31

To: "equest-users"; 

Subject: [Equest-users] capacity smaller than secondary demand


Hi everyone, 


I’m working on a loop-to-loop heat pump model.  My hot water loop has a coil load of 231.8 kBtu/h, from the SS-D and PS-D reports.   To this loop, I have 710 kBtu/h of heat pumps and an 846 kBtu/h boiler attached, which reasonably matches the primary number.    


But, for some reason,  the message below is telling me my secondary load is 10x the size that it actually is!



             Loop: Hot Water Loop       heating capacity is smaller

             than the secondary demand. Primary= -1537010.

              Secondary= -2291187.


Does anyone happen to know where this secondary number  actually comes from?





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