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Hi all,

I'm trying to model DHW pipe insulation in the IECC 2006 PNNL prototype model SF+ elecres + crawlspace in version 9.4. Using the IDF editor to model. How to model pipe insulation?

I tried these steps:

1. Created a new object called "Pipe Insulation" in Class: Material and used it as an additional layer in object :Pipe, under Class: Construction.
2. Created new objects in Class: Pipe:Indoor for "DHW Supply Outlet Pipe_unit1" & "DHW Demand Inlet Pipe_unit1" assuming the pipe diameter as .75 inch and length as 6 feet. Deleted the same objects from Pipe:Adiabatic.
3. Edited Class: Branch. Changed component object type 1 from Pipe:Adiabatic to pipe:Indoor for Objects "DHW Supply Outlet Branch_unit1" & "DHW Demand Inlet Branch_unit1" , as I am trying to give insulated pipe for DHW outlet.

Is this the correct way to vary the pipe insulation for DHW? Why am I seeing variation in heating and cooling energy consumption? I would appreciate your inputs. Thanks in advance

Hi all,

I'm trying to model DHW pipe insulation in the IECC 2006 PNNL prototype model SF+ elecres + crawlspace in version 9.4. Using the IDF editor to model. How to model pipe insulation?

I tried these steps:

1. Created a new object called "Pipe Insulation" in Class: Material and used it as an additional layer in object :Pipe, under Class: Construction.
2. Created new objects in Class: Pipe:Indoor for "DHW Supply Outlet Pipe_unit1" & "DHW Demand Inlet Pipe_unit1" assuming the pipe diameter as .75 inch and length as 6 feet. Deleted the same objects from Pipe:Adiabatic.
3. Edited Class: Branch. Changed component object type 1 from Pipe:Adiabatic to pipe:Indoor for Objects "DHW Supply Outlet Branch_unit1" & "DHW Demand Inlet Branch_unit1" , as I am trying to give insulated pipe for DHW outlet.

Is this the correct way to vary the pipe insulation for DHW? Why am I seeing variation in heating and cooling energy consumption? I would appreciate your inputs. Thanks in advance

Hi all,

I'm trying to model DHW pipe insulation in the IECC 2006 PNNL prototype model SF+ elecres + crawlspace in version 9.4. Using the IDF editor to model. How to model pipe insulation?

I tried these steps:

1. Created a new object called "Pipe Insulation" in Class: Material and used it as an additional layer in object :Pipe, under Class: Construction. Construction.

2. Created new objects in Class: Pipe:Indoor for "DHW Supply Outlet Pipe_unit1" & "DHW Demand Inlet Pipe_unit1" assuming the pipe diameter as .75 inch and length as 6 feet. Deleted the same objects from Pipe:Adiabatic. Pipe:Adiabatic.

3. Edited Class: Branch. Changed component object type 1 from Pipe:Adiabatic to pipe:Indoor for Objects "DHW Supply Outlet Branch_unit1" & "DHW Demand Inlet Branch_unit1" , as I am trying to give insulated pipe for DHW outlet.

Is this the correct way to vary the pipe insulation for DHW? Why am I seeing variation in heating and cooling energy consumption? I would appreciate your inputs. Thanks in advance advance