Setting 0 value internal loads to UNDEFINED

[GoogleCodeExporter]

I am revising SDD SIM XML model files, and finding that there are a lot of 
instances where the internal load is 0, but there are heat gain fractions and 
schedules associated with the particular load.  Examples include:

IntLPDNonReg
GasEqpPwrDens
ProcGasPwrDens
ProcElecPwrDens

I'd like to put this out for discussion so we can come to a decision on what to 
do in these case.  Here is what I propose:

If the user's input for an internal load is 0 or UNDEFINED, all the associated 
heat gain fractions and schedules are set to UNDEFINED. This way they will not 
show up in the resulting output Sim XML or E+ files.

Original issue reported on code.google.com by da...@360-analytics.com on 29 Jul 2014 at 4:50

[GoogleCodeExporter]

I concur.

Original comment by rhedr...@archenergy.com on 29 Jul 2014 at 4:59

[GoogleCodeExporter]

With regard to UNDEFINED user inputs for loads, I also concur.  With regard to 
user input 0 values for internal loads, I propose the following modification:

If the user input for a particular load is set to 0, the proposed and standard 
design values for that load are set to UNDEFINED, along with associated heat 
gain fractions and schedules.

I am trying to avoid the situation where we pass an internal load value of 0 to 
Energy Plus, without passing an associated schedule.

Original comment by lu...@360-analytics.com on 29 Jul 2014 at 5:10