[EnergyPlus_Support] Re: Air primary loop has no air flow?????

["hbn_pch" <hbn_pch@xxxxxxxxxxxx>]

Hi,
  Thank you very much,Mike.According to your hint,i modify the 
example and the previous problem is cleared away.However,it appear 
new warnings,which are all the same:

** Warning ** Error -- Mass Flow Rate Calculation in Plant 
Loop=HEATING LOOP, Outlet and Inlet differ by more than tolerance.
   **   ~~~   ** Loop inlet node=HP INLET, 
flowrate=1.142157060549204E-002
   **   ~~~   ** Loop outlet node=PS_H_OP_OUTLET, 
flowrate=2.284314121098408E-002

** Warning ** Error -- Mass Flow Rate Calculation in Plant 
Loop=HEATING LOOP -- continues ** 500
   ** Warning ** Error -- Mass Flow Rate Calculation in Plant 
Loop=HEATING LOOP -- continues ** 1000
   ** Warning ** Error -- Mass Flow Rate Calculation in Plant 
Loop=COOLING LOOP -- continues ** 1500
   ** Warning ** Error -- Mass Flow Rate Calculation in Plant 
Loop=COOLING LOOP -- continues ** 2000
   ** Warning ** Error -- Mass Flow Rate Calculation in Plant 
Loop=COOLING LOOP -- continues ** 2500

** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC 
loops, at SUMMER DESIGN, 07/21 08:36 - 08:37
   ** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC 
loops, at SUMMER DESIGN, 07/21 08:37 - 08:38

  Expect your kind reply,thanks!



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" 
<mjwitte@g...> wrote:
> In the <Zone Sizing Information> report in the eio output file, all 
of the zone 
> design loads are zero.  This usually indicates a problem with the 
thermostat 
> inputs.  The Zone_control_type_day schedule is incorrect.  It it 
always 0.044, 
> which is interpreted as zero which means no heating or cooling is 
active.  This 
> schedule should only contain integer values from 0 to 4.  See the 
section about 
> Zone Control:Thermostatic in the Input Output Reference (p. 659, 
pdf p. 689) 
> for an explanation of the thermostat control type schedule.  
> 
> Mike
> 
> On 29 Nov 2004, at 2:38, hbn_pch wrote:
> 
> > 
> > 
> > Hi,
> >   i just simulate a story buinding.But it tells me that the air 
> > primary loop has no air flow???Why???
> >   Is the loop connection false???I've uploaded my idf.
> > 
> >   Thanks for all your kind help!!!!! 
> > 
> > 
> > 
> > 
> > 
> > 
> > The primary EnergyPlus web site is found at:
> > http://www.energyplus.gov
> > 
> > The group web site is:
> > http://groups.yahoo.com/group/EnergyPlus_Support/
> > 
> > Attachments are not allowed -- please post any files to the 
appropriate folder
> > in the Files area of the Support Web Site.
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> 
> 
> 
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support      
> EnergyPlus-Support@g...





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