SKG's profile - activity

As I know the method used to calculate loads in energyplus is heat balance method which calculates the loads for space.

IWEC2 provides newer data and more locations. IWEC were completed in 2001 and IWEC2 were completed in 2011. For a reside

IWEC2 is provides newer data and more locations. IWEC were completed in 2001 and IWEC2 were completed in 2011. For a res

How to model a refrigerator in OpenStudio? I am working on residential building and when I tried to model a kitchen refr

You do not need to buy it, the default download is SketchUp Pro and as you said it gets downgraded to SketchUp after 1-month wich is enough to use with OpenStudio, for non-profit purposes.

IWEC is still available by the DOE and EnergyPlus website for energy simulation while IWEC2 are sold by ASHARE.

Are they both reliable to be used for building energy simulation? if not Do we need to repeat all building energy simulations with the new sets of data (IWEC 2) to achieve better results?

I've changed the value of the maximum heating capacity of the mixed water heater several times, every time the value of kWh of the water systems changes while the annual water usage stays the same, about 200 m3 per year. How do I know if the target temperature is met?
Also when I replace the Mixed Water Heater with a "Solar Collector Integral Collector Storage", How do I know if the collector meets the hot water requirements?

the y-axis is the total energy consumption, i.e lights, heating, cooling, equipment and so on. For ideal air loads it is different types of energy consumption + district cooling and district heating.

As the name suggests, Ideal air loads, this suppose to estimate a small load when compared with HVAC systems. However, when I compare Ideal air loads with any other HVAC system the ideal load is always higher. Does any one knows why?

The figure below shows a comparison of different systems for my building.

Thanks , but the all absorpatance cells are empty in that file. By the way, I am using energyplus version 8-4

I found many for windows, walls and others. But the idea is to get a reference for my data. Can you provide a link for WINDOW7? thanks.

I am trying to run a simulation of local residential buildings. Most building's material properties are found in ASHRAE. Can you let me know where to find solar absorptance, thermal absorptance and visible absorptance for different materials used in building construction such as walls, roof, windows , etc...?

Does anyone know where to find solar, thermal, and visible absorptance of building materials?

I am trying to model HW system but sometimes I get errors regarding controls as described below. When I try a test model, one space building, it works but with my building, there are always errors. I checked out all schedules and setting but no way. Your help is appreciated in advance.

image of my loop:

Program Version,EnergyPlus, Version 8.4.0-832e4bb9cb, YMD=2016.08.16 08:41,IDD_Version 8.4.0
   ************* IDF Context for following error/warning message:
   ************* Note -- lines truncated at 300 characters, if necessary...
   *************   4445 PlantEquipmentOperationSchemes,
   ************* indicated Name=Plant Loop 1 Operation Schemes
   ************* Only last 4 lines before error line shown.....
   *************   4446   Plant Loop 1 Operation Schemes,         !- Name
   *************   4447   PlantEquipmentOperation:HeatingLoad,    !- Control Scheme Object Type 1
   *************   4448   Plant Loop 1 Heating Operation Scheme,  !- Control Scheme Name 1
   *************   4449   ;                                       !- Control Scheme Schedule Name 1
   ** Severe  ** IP: IDF line~4449 Error detected in Object=PLANTEQUIPMENTOPERATIONSCHEMES, name=PLANT LOOP 1 OPERATION SCHEMES
   **   ~~~   ** Field [Control Scheme 1 Schedule Name] is required but was blank
   ** Warning ** IP: Note -- Some missing fields have been filled with defaults. See the audit output file for details.
   ** Severe  ** IP: Blank "required" fields found in input
   ** Severe  ** IP: Out of "range" values and/or blank required fields found in input
   **  Fatal  ** IP: Errors occurred on processing IDF file. Preceding condition(s) cause termination.
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=3
   ..... Last severe error=IP: Out of "range" values and/or blank required fields found in input
   ************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
   ************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Terminated--Fatal Error Detected. 1 Warning; 3 Severe Errors; Elapsed Time=00hr 00min  0.48sec

In openstudio Results Summary, I have chosen the Metric units from preferences but the results still appear in IP units. Is there a way to see all the results and graphs in SI units.

Yes, it does. Thanks

I am trying to model an air conditioning split unit in openstudio . I found PTHP and PTAC but I can not find the suitable component for a split unit. 

 Is there a built-in component? If not what is the alternative?

Does anyone know how to model a split unit air conditioner in OpenStudio? - ResearchGate. Available from: https://www.researchgate.net/post/Doe... [accessed Aug 3, 2016].