Have you received any suggestions from the group? If not, the following may help.
Your picture looks like a simple radiator with a gas water heater.
I think, both are standard components.
What is the building environment? Just one room?.
The gas water heater is in the example IDF, 5ZoneWaterCooled_Baseboard.idf.
-----------------------------------------
The sample objects are extracted from the same IDF:
Branch,
Central Boiler Branch, !- Name
0, !- Maximum Flow Rate {m3/s}
Boiler:HotWater, !- Component 1 Object Type
Central Boiler, !- Component 1 Name
Central Boiler Inlet Node, !- Component 1 Inlet Node Name
Central Boiler Outlet Node, !- Component 1 Outlet Node Name
ACTIVE;
Boiler:HotWater,
Central Boiler, !- Name
NaturalGas, !- Fuel Type
autosize, !- Nominal Capacity {W}
0.8, !- Nominal Thermal Efficiency
BoilerEfficiency, !- Normalized Boiler Efficiency Curve Name
81., !- Design Water Outlet Temperature {C}
autosize, !- Design Water Flow Rate {m3/s}
0.0, !- Minimum Part Load Ratio
1.2, !- Maximum Part Load Ratio
1.0, !- Optimum Part Load Ratio
Central Boiler Inlet Node, !- Boiler Water Inlet Node Name
Central Boiler Outlet Node, !- Boiler Water Outlet Node Name
100., !- Water Outlet Upper Temperature Limit {C}
VariableFlow; !- Boiler Flow Mode
Pump:VariableSpeed,
HW Circ Pump, !- Name
HW Supply Inlet Node, !- Inlet Node Name
HW Pump Outlet Node, !- Outlet Node Name
autosize, !- Rated Flow Rate {m3/s}
179352, !- Rated Pump Head {Pa}
autosize, !- Rated Power Consumption {W}
0.9, !- Motor Efficiency
0.0, !- Fraction of Motor Inefficiencies to Fluid Stream
0, !- Coefficient 1 of the Part Load Performance Curve
1, !- Coefficient 2 of the Part Load Performance Curve
0, !- Coefficient 3 of the Part Load Performance Curve
0, !- Coefficient 4 of the Part Load Performance Curve
0, !- Minimum Flow Rate {m3/s}
INTERMITTENT; !- Pump Control Type
These are in the 5ZoneWaterCooled_Baseboard.idf.
I do not think that you need to use an air loop, if you are not concerned with the air ventilation of the room. The radiation adds heat to the space. The thermostat turns on and off the gas heater, and the pump.
Sizing:Zone,
SPACE1-1, !- Zone Name
14., !- Zone Cooling Design Supply Air Temperature {C}
50., !- Zone Heating Design Supply Air Temperature {C}
0.009, !- Zone Cooling Design Supply Air Humidity Ratio {kg-H2O/kg-air}
0.004, !- Zone Heating Design Supply Air Humidity Ratio {kg-H2O/kg-air}
flow/person, !- Outdoor Air Method
0.00944, !- Outdoor Air Flow per Person {m3/s}
0.0, !- Outdoor Air Flow per Zone Floor Area {m3/s-m2}
0.0, !- Outdoor Air Flow per Zone {m3/s}
0.0, !- Zone Sizing Factor
DesignDay, !- Cooling Design Air Flow Method
0, !- Cooling Design Air Flow Rate {m3/s}
, !- Cooling Minimum Air Flow per Zone Floor Area {m3/s-m2}
, !- Cooling Minimum Air Flow {m3/s}
, !- Cooling Minimum Air Flow Fraction
DesignDay, !- Heating Design Air Flow Method
0,
ZoneHVAC:Baseboard:RadiantConvective:Water,
SPACE4-1 Baseboard, !- Name
ReheatCoilAvailSched, !- Availability Schedule Name
SPACE4-1 Zone Coil Water In Node, !- Inlet Node Name
SPACE4-1 Zone Coil Water Out Node, !- Outlet Node Name
76.67, !- Average Water Temperature {C}
0.063, !- Standard Water Mass Flow Rate {Kg/s}
3000.0, !- Rated Capacity {W}
0.0013, !- Maximum Water Flow Rate {m3/s}
0.001, !- Convergence Tolerance
0.3, !- Fraction Radiant
0.3, !- Fraction of Radiant Energy Incident on People
C4-1, !- Surface 1 Name
0.1, !- Fraction of Radiant Energy to Surface 1
F4-1, !- Surface 2 Name
0.2, !- Fraction of Radiant Energy to Surface 2
SB41, !- Surface 3 Name
0.1, !- Fraction of Radiant Energy to Surface 3
SB43, !- Surface 4 Name
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: hteixeira85@xxxxxxxxx
Date: Fri, 19 Jun 2009 11:47:46 +0000
Subject: [EnergyPlus_Support] Re: How to do a single heating hidronic simulation
--- In EnergyPlus_Support@yahoogroups.com , "hteixeira85" <hteixeira85@...> wrote:
>
> I have some troubles to do a water loop with a convective radiator. I don't any cooling system. I only want to now the consumption of a boiler.
>
> So, from the beginning, what i need to do this??
>
> Here is the scheme: http://img32.imageshack.us/img32/8223/circuitoc.jpg
>
> It is very simple. But doesn't work and I can't control this.
>
> It is necessary do a AirLoop?
>
> I belive that the ZoneHVAC:Baseboard:RadiantConvective:Water doesn't work with a boiler. The examples only uses fan coils. But i don't want that. I just want a simple hot water loop for heating.
>
> Thanks.
Anyone can help?? I need more tips. Please!!
>
Internet Explorer 8 makes surfing easier. Get it now!
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The group web site is:
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__,_._,___
SPACE4-1 Baseboard, !- Name
ReheatCoilAvailSched, !- Availability Schedule Name
SPACE4-1 Zone Coil Water In Node, !- Inlet Node Name
SPACE4-1 Zone Coil Water Out Node, !- Outlet Node Name
76.67, !- Average Water Temperature {C}
0.063, !- Standard Water Mass Flow Rate {Kg/s}
3000.0, !- Rated Capacity {W}
0.0013, !- Maximum Water Flow Rate {m3/s}
0.001, !- Convergence Tolerance
0.3, !- Fraction Radiant
0.3, !- Fraction of Radiant Energy Incident on People
C4-1, !- Surface 1 Name
0.1, !- Fraction of Radiant Energy to Surface 1
F4-1, !- Surface 2 Name
0.2, !- Fraction of Radiant Energy to Surface 2
SB41, !- Surface 3 Name
0.1, !- Fraction of Radiant Energy to Surface 3
SB43, !- Surface 4 Name
Surface names are those given in the building surfaces section described in the 5zone example IDF.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: hteixeira85@xxxxxxxxx
Date: Fri, 19 Jun 2009 11:47:46 +0000
Subject: [EnergyPlus_Support] Re: How to do a single heating hidronic simulation
--- In EnergyPlus_Support@
>
> I have some troubles to do a water loop with a convective radiator. I don't any cooling system. I only want to now the consumption of a boiler.
>
> So, from the beginning, what i need to do this??
>
> Here is the scheme: http://img32.
>
> It is very simple. But doesn't work and I can't control this.
>
> It is necessary do a AirLoop?
>
> I belive that the ZoneHVAC:Baseboard:
>
> Thanks.
Anyone can help?? I need more tips. Please!!
>
Internet Explorer 8 makes surfing easier. Get it now!
__._,_.___
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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