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Re: [EnergyPlus_Support] "Energy Consumption"



Hi Chowdhury;
Good to now it!

To set or analyze the Fan/coil efficiency in the PTAC (HVAC) you can use a Supply Fan Operating Mode Schedule Name Group within fields as Supply Fan Total Efficiency, Supply Fan Delta Pressure or Supply Fan Motor Efficiency.

My best regards;

Ademilson Xavier.

(51) 8575 0797

De: "Sajal Chowdhury sajal_c@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Para: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Enviadas: Terça-feira, 12 de Abril de 2016 9:14
Assunto: Re: [EnergyPlus_Support] "Energy Consumption"

 
Dear Mr. Ademilson Xavier.
Thank you for your great suggestions and it is working. In that case for the Template:Zone:IdealLoadsAir System" in the HVAC Templates Group I input the followings:

HVACTemplate:Thermostat,
    Thermostrat,             !- Name
    Heating-Supply-Air-Temp-Sch,  !- Heating Setpoint Schedule Name
    18,                      !- Constant Heating Setpoint {C}
    Cooling-Supply-Air-Temp-Sch,  !- Cooling Setpoint Schedule Name
    26.7;                    !- Constant Cooling Setpoint {C}


!-   ===========  ALL OBJECTS IN CLASS: HVACTEMPLATE:ZONE:IDEALLOADSAIRSYSTEM ===========

HVACTemplate:Zone:IdealLoadsAirSystem,
    Z-1,                     !- Zone Name
    Thermostrat,             !- Template Thermostat Name
    Cooling-Supply-Air-Temp-Sch,  !- System Availability Schedule Name
    50,                      !- Maximum Heating Supply Air Temperature {C}
    13,                      !- Minimum Cooling Supply Air Temperature {C}
    0.0156,                  !- Maximum Heating Supply Air Humidity Ratio {kgWater/kgDryAir}
    0.0077,                  !- Minimum Cooling Supply Air Humidity Ratio {kgWater/kgDryAir}
    NoLimit,                 !- Heating Limit
    ,                        !- Maximum Heating Air Flow Rate {m3/s}
    ,                        !- Maximum Sensible Heating Capacity {W}
    NoLimit,                 !- Cooling Limit
    ,                        !- Maximum Cooling Air Flow Rate {m3/s}
    autosize,                !- Maximum Total Cooling Capacity {W}
    Heating-Supply-Air-Temp-Sch,  !- Heating Availability Schedule Name
    Cooling-Supply-Air-Temp-Sch,  !- Cooling Availability Schedule Name
    Humidistat,              !- Dehumidification Control Type
    0.7,                     !- Cooling Sensible Heat Ratio {dimensionless}
    60,                      !- Dehumidification Setpoint {percent}
    Humidistat,              !- Humidification Control Type
    60,                      !- Humidification Setpoint {percent}
    None,                    !- Outdoor Air Method
    0.00944,                 !- Outdoor Air Flow Rate per Person {m3/s}
    ,                        !- Outdoor Air Flow Rate per Zone Floor Area {m3/s-m2}
    ,                        !- Outdoor Air Flow Rate per Zone {m3/s}
    ,                        !- Design Specification Outdoor Air Object Name
    None,                    !- Demand Controlled Ventilation Type
    NoEconomizer,            !- Outdoor Air Economizer Type
    None,                    !- Heat Recovery Type
    0.7,                     !- Sensible Heat Recovery Effectiveness {dimensionless}
    0.65;                    !- Latent Heat Recovery Effectiveness {dimensionless}

Now for the Facility Total HVAC Electric Demand Power (output), in that case how I can include Fan/coil efficiency with this IdealLoadsAir System (from where)? Thank you so much. 
Regards, 
Sajal Chowdhury
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.



On Tuesday, April 12, 2016 8:40 PM, "ademilson xavier ademilsonxavier@xxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:


 
Hello Mr Chowdhury;

Regarding Energy Consumption I think you could try some reports as "EnergyMeters" or "EndUseEnergyConsumptionElectricityMonthly" by Output:Table - Group and/or "Facility Total HVAC Electric Demand Power" by Output:Variable - Group. However the COP values and Efficiencyof Fan need to be set.

Regarding to RH analysis you can use a "Maximun Heating/Cooling Supply Air Humidity Ratio" into HVAC "Template:Zone:IdealLoadsAir System" in the HVAC Templates Group.

My best regards;

Ademilson Xavier.

(51) 8575 0797

De: "Sajal Chowdhury sajal_c@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Para: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Enviadas: Terça-feira, 12 de Abril de 2016 7:39
Assunto: Re: [EnergyPlus_Support] "Energy Consumption"

 
Thank you. Yes I am using DX coil and Fan. But in that case if I want to calculate only cooling energy and Electric Consumption with the template of PTAC load and Thermostat (set point Heating 18C and cooling 26.7 C, RH=65%), I can manage the indoor set point but could not control the RH which I need (65%). Can you suggest?

IDF,HVACTemplate:Thermostat,Thermostrat,Heating-Supply-Air-Temp-Sch,18,Cooling-Supply-Air-Temp-Sch,26.7; 
IDF,HVACTemplate:Zone:PTAC,Z-1,Thermostrat,autosize,autosize,autosize,,,Maximum, .0000025,,,Cooling-Supply-Air-Temp-Sch,FAN_SCH,BlowThrough, .8, 300, .9,SingleSpeedDX,Cooling-Supply-Air-Temp-Sch,autosize,autosize, 3,Electric,Heating-Supply-Air-Temp-Sch,autosize, .8,,,SupplyAirTemperature, 14, 11.11,SupplyAirTemperature, 50, 30,,,None,,autosize;
 
Sajal Chowdhury
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.
Assistant Professor, Dept. of Architecture (Study Leave)
Chittagong University of Engineering & Technology Chittagong 4349, Bangladesh
Present Address:
Laboratory of Environmental Ergonomics
(Planning and Performances for Built Environment)
Division of Human Environmental Systems
Graduate School of Engineering
Hokkaido University, N13-W8, Kita-ku, Sapporo 060-8628, JAPAN
Mobile(P): +818096126951, E-MAIL: sajal_c@xxxxxxxxx


On Tuesday, April 12, 2016 7:23 PM, "Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:


 
Inthink you will need to add the energy of individual components. E.g., fan + DX coil

On Tuesday, April 12, 2016, Sajal Chowdhury sajal_c@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 
Dear All,
Is there any output variable for the calculation of direct "Energy Consumption" of HVAC system? Or how I can calculate Energy Consumption from EP simulation of HP/Ideal Load/VAV/ VAF etc. Thank you.
 
Sajal Chowdhury
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.



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         Posted by: ademilson xavier <ademilsonxavier@xxxxxxxxxxxx>         

    











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