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RE: ??: Re: [EnergyPlus_Support] Harbour Building
Hi Samlee,
Are you using a chiller or a water to water heat pump. In either case the condenser side flow rate is very less as the error indicates 3E-9. if you are using a chiller, please set the condenser side flow rate to autosize. If you are using a heat pump the set a flow rate comparable to the evaporator mass flow rate. The lowest mass flow in E+ is 0.001. Your condenser side setting means that there is no flow in the condenser side.
That should help you solve the problem.
Sankar
S.K.Padhmanabhan
Research Associate
Mechanical & Aerospace Engineering
Oklahoma State University,
Stillwater, OK - 74075
Ph: (405)744-4380
________________________________
From: EnergyPlus_Support@xxxxxxxxxxxxxxx on behalf of wing sun lee
Sent: Mon 8/29/2005 11:33 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: ??: Re: [EnergyPlus_Support] Harbour Building
Hi,
How can I address these problem. Would you mind giving me some more hints.
SAMLEE
Linda Lawrie <linda@xxxxxxxxxx> ?:
Will these new warnings help?
** Warning ** SizeCondDemandSide: Calculated Plant Sizing Design
Volume Flow Rate=[3.00E-009] is too small. Set to 0.0
** ~~~ ** ..occurs for Condenser Loop=CONDENSER WATER LOOP
** Warning ** SizeCondSupplySide: Calculated Plant Sizing Design
Volume Flow Rate=[3.00E-009] is too small. Set to 0.0
** ~~~ ** ..occurs for Condenser Loop=CONDENSER WATER LOOP
** Warning ** SizePump: Calculated Pump Nominal Volume Flow
Rate=[3.00E-009] is too small. Set to 0.0
** ~~~ ** ..occurs for Pump=COND CIRC PUMP
At 09:48 AM 8/27/2005, wing sun lee wrote:
>I can't tackle the following "Warning" & "Severe" problems that were
>arisen from my idf file:
> ** Warning ** Check input. Pump nominal power or motor efficiency
> is set to 0, for pump=COND CIRC PUMP
> ** Warning ** Check input. Pump nominal volumetric flow rate is
> set or calculated = 0, for pump=COND CIRC PUMP
> ** Severe ** COOLING TOWER:SINGLE SPEED "CENTRAL TOWER". Free
> convection air flow rate must be less than the design air flow rate.
> ** Severe ** COOLING TOWER:SINGLE SPEED "CENTRAL TOWER". Free
> convection UA must be less than the design tower UA.
Linda
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