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2018-07-17 11:47:54 -0500 answered a question Does E+ Simulate Greenhouse's Fog System?

Taher, you are welcome to post your question over at :- Please consider joining this fledgling LinkedIN Group for Profe

2014-11-28 07:18:47 -0500 commented answer What are the underlying resources for simulation using Sefaira's new plug in to REVIT?

Are the validation studies posted anywhere ? How can I get a copy ?

2014-11-28 07:16:00 -0500 commented answer Simplified Modeling Tools

Xandrika, do you know where we can get the comparison study with eQuest and IES-VE ?

2014-11-23 03:59:50 -0500 received badge  Citizen Patrol (source)
2014-11-23 03:06:26 -0500 answered a question Where can I get quality weather files for the Southern Hemisphere?

My observation is based on a file I bought a few years ago - our attention was drawn to a high and constant level of snow over a city in South Africa. On further inspection we found :- 1) Horizontal Infrared Radiation from Sky is a constant 2) All of the illuminance and luminance values are a constant 3) Sky cover values are also a constant 4) Precipitable water is a constant and also unrealistic. 5) Aerosol Optical Depth is a constant 6) Snow Depth is a constant and also unrealistic

BTW - this was not a DoE file - but a commercial file. More recently we have had good value from WhiteBox Technologies.

But that was just one file. My concern is that many Simulationists use these files in good faith but there does not seem to be a universal quality control method. Perhaps it's time we devise a ISO Standard ?

Also, any simulation should use a number of files - ASHRAE should demand not one result, but multiple results for different weather scenario - a typical scenario, and a few un-typical scenarios ? I quite like the idea of using a TMY file as a start, but then using say an artificial hot year and then a cold year ( or some combination of the extremes )

Does this make sense ?

2014-10-20 13:17:06 -0500 received badge  Student (source)
2014-10-20 13:00:51 -0500 asked a question Where can I get quality weather files for the Southern Hemisphere?

Some of the automatically assembled weather files have weird data - where can I get good quality weather files for my hemisphere, especially Africa ?

Update:

My observation is based on a file I bought a few years ago - our attention was drawn to a high and constant level of snow over a city in South Africa. On further inspection we found :

  1. Horizontal Infrared Radiation from Sky is a constant
  2. All of the illuminance and luminance values are a constant
  3. Sky cover values are also a constant
  4. Precipitable water is a constant and also unrealistic.
  5. Aerosol Optical Depth is a constant
  6. Snow Depth is a constant and also unrealistic

BTW - this was not a DoE file - but a commercial file. More recently we have had good value from WhiteBox Technologies.

But that was just one file. My concern is that many Simulationists use these files in good faith but there does not seem to be a universal quality control method. Perhaps it's time we devise a ISO Standard ?

Also, any simulation should use a number of files - ASHRAE should demand not one result, but multiple results for different weather scenario - a typical scenario, and a few un-typical scenarios ? I quite like the idea of using a TMY file as a start, but then using say an artificial hot year and then a cold year ( or some combination of the extremes )

Does this make sense ?

2014-10-09 17:35:13 -0500 received badge  Teacher (source)
2014-10-01 02:08:30 -0500 received badge  Editor (source)
2014-10-01 02:05:02 -0500 answered a question Where can I meet fellow energy modelers?

What about www.LinkedIN.com if you are a member ( it' like Facebook for Professionals - 500 million business people around the world )

There are a number of IBPSA Groups. These Groups are aimed at the business side of it all, although there are many Academics as members too. These LinkedIN Groups support UnmetHours !

Also, the LinkedIN Groups are where non-energy modellers meet with the modelling geeks - a great way to do business.

1) IBPSA - International Building Performance Simulation Association - 4,800 members - http://www.linkedin.com/groups/IBPSA-...

2) Daylighting & Fenestration for Green Buildings - IBPSA - 2,400 members - http://www.linkedin.com/groups/Daylig...

Further there are many local IBPSA Chapter Groups ( listed in order of size )

  • IBPSA - EnergyPlus[Member][Subgroup]
  • IBPSA-NYC
  • IBPSA-NVL
  • IBPSA-Chicago
  • IBPSA-Boston
  • ibpsa france
  • IBPSA - Argentina
  • IBPSA-Italy
  • IBPSA-USA, Los Angeles
  • IBPSA North Texas Chapter
  • IBPSA-NCC
  • IBPSA - Iberoamérica

A home for everyone ...