dalin_si's profile - activity

Hi I want to clone a exist boiler in model by using ruby binding, but after that, I find the modeloject type is diferent, so that I can not add this boiler into a plantloop. how do I change the copy one's object type?

irb(main):115:0> new_boiler = model.getBoilerHotWaters[0].clone(model)
=> #<OpenStudio::Model::ModelObject:0x0000000395a738 @__swigtype__="_p_openstudio__model__ModelObject">
irb(main):116:0> hot_water_loop = model.getPlantLoops[0]
=> #<OpenStudio::Model::PlantLoop:0x0000000390be58 @__swigtype__="_p_openstudio__model__PlantLoop">
irb(main):117:0> hot_water_loop.addSupplyBranchForComponent(new_boiler)
TypeError: Expected argument 1 of type openstudio::model::HVACComponent, but got OpenStudio::Model::ModelObject #<OpenStudio::Model::ModelObje...
        in SWIG method 'addSupplyBranchForComponent'
        from (irb):117:in `addSupplyBranchForComponent'
        from (irb):117
        from C:/Ruby200-x64/bin/irb:12:in `<main>'

the new_boiler is OpenStudio::Model::ModelObject, but the original one is:

irb(main):118:0> model.getBoilerHotWaters[0]
=> #<OpenStudio::Model::BoilerHotWater:0x00000003850ec8 @__swigtype__="_p_openstudio__model__BoilerHotWater">

HI, maybe it is a stupid question, but what's the difference between AHU and ACCU, and how to I model a ACCU in openstudio? thanks!

how to model ACCU (Air Cooled Condensing Unit) in openstudio HI, maybe it is a stupid question, but what's the differenc

how to model ACCU (Air Cooled Condensing Unit) in openstudio HI, Whats the difference between AHU and ACCU, and how to I

Report ASHRAE 62.1 with single zone system in openstudio Hi All, I want to export the report about Report ASHRAE 62.1 f

is any heat exchanger can transfer heat from steam to water? Hi I simulated a building with steam boiler, and want to tr

is any heat exchanger can transfer heat from steam to water? Hi I simulated a building with steam boiler, and want to tr

Can I simulate the cycling process of a boiler? Hi, for now I want to simulate boilers with different turn down ratio, b

do I need to multiply the outdoor air flow rate according to zone multiplier? Hi, if one zone need 32 cfm outdoor air, s

Thanks, but in this way, how can I guarantee there have enough fresh air in each apartment? (because I only can set flow rate from corridor, rather than fresh air flow rate)

Hi, I got a building with one RTU which provide fresh air to corridor, and each apartment fresh air also provided through a door undercut from corridor. I just wonder how can I simulate a vent between each apartment and corridor by openstudio?

is that key_name for name of each PTHP?

Also, seems like I can't type a variable output in custom meter, otherwise, following warning would come up: * Warning * Meter:Custom="PTHP1", invalid Output Variable or Meter Name 1="ZONE PACKAGE TERMINAL HEAT PUMP ELECTRIC ENERGY". * ~~~ * ...will not be shown with the Meter results.

Thank you, but the only meter I can got is Zone Package Terminal Heat Pump Electric Energy, this one variable for all zones, how do I get each zone PTHP electric meter? is that means each key name for Zone Package Terminal Heat Pump Electric Energy should be a space name?

I have a CHP case, and I want to track the electric consumption excluded each apartment, so in Meter:CustomDecrement I exclude each apartment zone electric meter (such as:Electricity:Zone:1-LOFT ZN). however, I notice that these kind of electric meter don't include its HVAC (PTPH in each apartment). From rdd and mdd file, I only can find Zone Package Terminal Heat Pump Electric Energy, but it is a variable which have each zone PTHP result, rather than sum.

So I just wonder is there have any method to get the electric energy of all PTHP in output:variable or output:meter. So I can exclude it from total electric consumption (Electricity:Facility)

Thank you taylor

Hi! I'm simulating a Apartment equipped with PTHP. These devices have a vary rated air volume flow rate.

** Severe  ** Sizing: Coil:Cooling:DX:SingleSpeed "1-LOFT ZN PTHP CLGCOIL": Rated air volume flow rate per watt of rated total cooling capacity is out of range.
   **   ~~~   ** Min Rated Vol Flow Per Watt=[4.027E-005], Rated Vol Flow Per Watt=[9.787E-005], Max Rated Vol Flow Per Watt=[6.041E-005]. See Input Output Reference Manual for valid range.
   ** Severe  ** Sizing: Coil:Heating:DX:SingleSpeed 1-LOFT ZN PTHP HTGCOIL: Rated air volume flow rate per watt of rated total heating capacity is out of range.
   **   ~~~   ** Min Rated Vol Flow Per Watt=[4.027E-005], Rated Vol Flow Per Watt=[8.700E-005], Max Rated Vol Flow Per Watt=[6.041E-005]. See Input-Output Reference Manual for valid range.
   ** Severe  ** Sizing: Coil:Cooling:DX:SingleSpeed "1-N APARTMENT 1 ZN PTHP CLGCOIL": Rated air volume flow rate per watt of rated total cooling capacity is out of range.
   **   ~~~   ** Min Rated Vol Flow Per Watt=[4.027E-005], Rated Vol Flow Per Watt=[3.380E-005], Max Rated Vol Flow Per Watt=[6.041E-005]. See Input Output Reference Manual for valid range.
   ** Severe  ** Sizing: Coil:Heating:DX:SingleSpeed 1-N APARTMENT 1 ZN PTHP HTGCOIL: Rated air volume flow rate per watt of rated total heating capacity is out of range.
   **   ~~~   ** Min Rated Vol Flow Per Watt=[4.027E-005], Rated Vol Flow Per Watt=[3.004E-005], Max Rated Vol Flow Per Watt=[6.041E-005]. See Input-Output Reference Manual for valid range.

According to similar question: How can I simulate a CoolingCoilDX with a high air flow (rated air volume flow rate)? From my understanding is that if I give a value to those DX coil from their parents components (do not autosize), you can operate the coil "outside" the rated flow/capacity limits.However, after I change the PTHP input, rather than using autosizing, these error also occurred.

Any advice and suggestion?

Hi, I model the baseline in OpenStudio according to ASHRAE 90.1 APP G for a apartment in NYC, the hvac system is PTAC. The heating consumption is too small to compare with cooling consumption (1:2 approx). According to the previous experience, the heating consumption is too low.

OSM file and simulation result are shown below:

model

Does anyone can help me to figure out what's going on and diagnose the problem in this model?

@Kyle Benne is it a bug or not?

Ok, I figured it out by myself

it is a error when OpenStudio export IDF file

for eaxmple:

I have equipment list like this:

four equipment in list, but two exhaust fan shouldn't be listed in heating or cooling sequence. So when it export IDF file, it does skip two fans, but the index for the fourth equipment are export to IDF file:

To figure it out, just put these two fan at the end of list, the index transferring should be fine.

Hi, I want to set some adiabatic wall for my model, but after I set adiabatic walls, seems constructions for these surface can not be assigned from construction set, so I have to assign by myself (by ruby bindings). However, form the SDK documentation, there is no method for Surface to assign a single construction, does someone can help me to figure it out?

Hi, I got a error shows below, I know it is cooling/heating priority disorder in EnergyPlus:

    ** Severe  ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList="APT-113(2BR) SUPER ZN EQUIPMENT LIST".
   **   ~~~   ** invalid Zone Equipment 2 Cooling Sequence=[4].
   **   ~~~   ** equipment sequence must be > 0 and <= number of equipments in the list.
   **   ~~~   ** only 3 in the list.
   ** Severe  ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList="APT-113(2BR) SUPER ZN EQUIPMENT LIST".
   **   ~~~   ** invalid Zone Equipment 2 Heating or No-Load Sequence=[4].
   **   ~~~   ** equipment sequence must be > 0 and <= number of equipments in the list.
   **   ~~~   ** only 3 in the list.
   ** Severe  ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList="APT-113(2BR) SUPER ZN EQUIPMENT LIST".
   **   ~~~   ** invalid Zone Equipment 3 Cooling Sequence=[5].
   **   ~~~   ** equipment sequence must be > 0 and <= number of equipments in the list.
   **   ~~~   ** only 3 in the list.
   ** Severe  ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList="APT-113(2BR) SUPER ZN EQUIPMENT LIST".
   **   ~~~   ** invalid Zone Equipment 3 Heating or No-Load Sequence=[5].
   **   ~~~   ** equipment sequence must be > 0 and <= number of equipments in the list.
   **   ~~~   ** only 3 in the list.
   ** Warning ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList = APT-113(2BR) SUPER ZN EQUIPMENT LIST
   **   ~~~   ** ...zero assignments for Zone Equipment Cooling Sequence=2, apparent gap in sequence assignments in this equipment list.
   ** Warning ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList = APT-113(2BR) SUPER ZN EQUIPMENT LIST
   **   ~~~   ** ...zero assignments for Zone Equipment Heating or No-Load Sequence=2, apparent gap in sequence assignments in this equipment list.
   ** Warning ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList = APT-113(2BR) SUPER ZN EQUIPMENT LIST
   **   ~~~   ** ...zero assignments for Zone Equipment Cooling Sequence=3, apparent gap in sequence assignments in this equipment list.
   ** Warning ** GetZoneEquipmentData1: ZoneHVAC:EquipmentList = APT-113(2BR) SUPER ZN EQUIPMENT LIST
   **   ~~~   ** ...zero assignments for Zone Equipment Heating or No-Load Sequence=3, apparent gap in sequence assignments in this equipment list.

However, I don't know how to fix that in openstudio. when I check it in ruby, seems it's fine:

irb(main):031:0> zone = model.getThermalZoneByName('APT-113(2BR) SUPER ZN').get
=> #<OpenStudio::Model::ThermalZone:0x000000034a7b28 @__swigtype__="_p_openstudio__model__ThermalZone">
irb(main):032:0> zone.equipmentInHeatingOrder
=> [#<OpenStudio::Model::ModelObject:0x0000000375f168 @__swigtype__="_p_openstudio__model__ModelObject">, #<OpenStudio::Model::ModelObject:0x0000000375f0c8 @__swigtype__="_p_openstudio__model__ModelObject">, #<OpenStudio::Model::ModelObject:0x0000000375efb0 @__swigtype__="_p_openstudio__model__ModelObject">, #<OpenStudio::Model::ModelObject:0x0000000375ef10 @__swigtype__="_p_openstudio__model__ModelObject">]
irb(main):033:0> zone.equipmentInHeatingOrder[0]
=> #<OpenStudio::Model::ModelObject:0x00000005cb4800 @__swigtype__="_p_openstudio__model__ModelObject">
irb(main):034:0> zone.equipmentInHeatingOrder[0].name.get
=> "Apt-113(2BR) Super Zn WSHP"
irb(main):035:0> zone.equipmentInHeatingOrder[1].name.get
=> "Apt-113(2BR) Super Kitchen EF"
irb(main):036:0> zone.equipmentInHeatingOrder[2].name.get
=> "Apt-113(2BR) Super Bathroom EF"
irb(main):037:0> zone.equipmentInHeatingOrder[3].name.get
=> "Apt-113(2BR) Super Zn Undercut Door"

so any suggestions?

Sorry for that, because I got heating and cooling consumption which have huge difference, so I just wonder why. Lack of controller was one of my consideration, but now I don't think that is the reason. sorry for that again.

@Julien Marrec Hi, the model shown in first pic is built by you, so would you please tell me how do you add these coils to plant loop with controllers?