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After simulating with OpenStudio, you can set up the Site:GroundTemperature:BuildingSurface in EnergyPlus. For buildings

You may change the "solar distribution" to "FullExterior". If it could not be changed in DB, try export to a idf file, t

Do you want to run E+ and Matlab synchronous that mean at each timestep EnergyPlus exchange data with Matlab mutually?

It may because ExternalInterface:Schedule and ExternalInterface:Acturator can not be used in one idf file. I deleted al

It may because ExternalInterface:Schedule and ExternalInterface:Acturator can not be used in one idf file. I deleted al

Severe error with External Interface: Error, xml file "variables.cfg" declares variable Hi, I tried to define two v

Severe error with External Interface: Error, xml file "variables.cfg" declares variable Hi, I tried to define two v

Severe error with External Interface: Error, xml file "variables.cfg" declares variable Hi, I tried to define two v

Severe error with External Interface: Error, xml file "variables.cfg" declares variable Hi, I tried to define two v

Make sure you did not set people activity schedule to the Number of People Schedule Name in class of People. I taught E+ and came across several these mistakes resulting a 0 heating design load .

Gem is a Ruby library based on which build your own software. As OpenStudio use Ruby and C++, OS does use those library such as RubyGem and Qt. If you have any ruby programming experience, you will know how it works. Just search ruby gem on google, and you will have a basic understanding.

Thanks for you suggestion.

I recommend the Room Air Models in EnergyPlus which aimed modeling non-uniform room air temperatures that may occur within the interior air volume of a zone. The Room Air Models contained different air distribution models, for example ThreeNodeDisplacementVentilation used to simulate displacement ventilation. If you had conducted a CFD analysis, define your air model using RoomAir:TemperaturePattern:UserDefined. Refer to Input Output Reference for more information and UserDefinedRoomAirPatterns.idf in ExampleFiles may help you have a better understand of this model.

Hi everyone

Recently, I am conducting an online survey about building energy simulation and optimization tools, such as DesignBuilder Optimization module, BEOpt and GenOpt. I'd like to know early users' opinion other than researchers'. If you ever used any energy simulation and optimization software, could you please help answer the fellow three questions in https://sojump.com/jq/10264875.aspx.

1.Which building energy simulation and optimization (BESO) software do you ever used?

2.Which advantages agree with the current features of BESO softwere ?

3.Which hindrance do you think hinder the wide spread and application of BESO software?

Check your calculation process once more, because it is less likely E+ was wrong. You can also use the more sophisticated method AirflowNetwork to model the natural ventilation and it is easy for box building.

You can use codes to manipulate the output, for example set a threshold. Any script language, such as Ruby, Perl, Python, can be used to do that job.

Did you calculate the predicted volumetric flow rate at one time step or a period of time? The wind speed and wind direction may vary hour by hour. Some old weather files came from the local airport weather forecast which reported once in three hours.

Since E+ calculates the solar radiation reflection of ground and all other shading objects, for example other buildings, the surface outside face received both reflected and unreflected (direct) solar solar radiation. The total Surface Outside Face Sunlit Area is the area receive either direct (unreflected) or reflected solar. So the Surface Outside Face Sunlit Fraction equals Surface Outside Face Sunlit Area divided by total surface area.

Open your OSM file->run->5-EnergyPlus-0->eplusout.rdd. Copy the variable name into the AddOutputVariable Measure. You can also open the eplusout.rdd file in the term Run Simulation->Tree. After opening the file, copy the variable name into the AddOutputVariable Measure.

In the Library of Measure term.

You can't. I recommend you use Coil:WaterHeating:AirToWaterHeatPump:Pumped object which is used to simulate air source heat pump for hot water. You can achieve this by three steps. The first step is use HVACTemplate:Plant:Boiler to build the hot water plant loop. After running the simulation, find out expidf file and change its suffix to idf. The third step is to replace the boiler object with Coil:WaterHeating:AirToWaterHeatPump:Pumped.

Sizing:Zone calculates the zone design air flow rate which assumes a variable amount of supply air at a fixed temperature and humidity. As you set different supply air temperatures, it results different zone design air flow rate with a different fan energy consumption.

It doesn't matter. Make sure the difference between buildings' floor area and the original (design) floor area less than a small number, for example 3%.

It seems that you had some experience to use these tools. Could you help me answer a questionnaire about energy optimization. Click here: https://sojump.com/jq/10264875.aspx. I am a junior researcher from China.

Which algorithm do you use? My advice is read more information about that algorithm.

You may set Field: Zone Cooling Design Supply Air Temperature Input Method= TemperatureDifference, then supply air temperature will change automatically and zone temperature can below zero.