7A-i 

APPENDIX 7A. CHARACTERISTICS OF MODULAR CLASSROOM, MODULAR 

OFFICE, AND TELECOMMUNICATION SHELTER MODELS 

TABLE OF CONTENTS

7A.1 INTRODUCTION ........................................................................................................... 7A-1

7A.2 BUILDING MODEL DESCRIPTIONS .......................................................................... 7A-1

7A.3 SPVAC AND SPVHP EQUIPMENT PERFORMANCE CURVES ............................ 7A-14

REFERENCES ....................................................................................................................... 7A-17

LIST OF TABLES

Table 7A.2.1 Description of DOE Modular Office Building Model ........................................ 7A-2

Table 7A.2.2 Key Schedules for DOE Modular Office Building Model ................................. 7A-5

Table 7A.2.3 Description of DOE Modular Classroom Building Model ................................. 7A-6

Table 7A.2.4 Key Schedules for DOE Modular Classroom Building Model .......................... 7A-9

Table 7A.2.6 Key Schedules for DOE Telecommunication Shelter Model ........................... 7A-13

Table 7A.3.1 Performance Curves Used in SPVAC and SPVHP Modeling .......................... 7A-15
7A-1 

APPENDIX 7A. CHARACTERISTICS OF MODULAR CLASSROOM, MODULAR 

OFFICE, AND TELECOMMUNICATION SHELTER MODELS

7A.1 INTRODUCTION

The analysis of baseline energy consumption for single package vertical air conditioners 

(SPVAC) and single package vertical heat pumps (SPVHP) discussed in chapter 7 of the NOPR 

TSD was based on EnergyPlus simulation data for three building models: a modular office 

building, a modular classroom, and a telecommunication shelter. This appendix provides key 

characteristics of the three building models that formed the basis of these data.

7A.2 BUILDING MODEL DESCRIPTIONS 

Table 7A.2.1 provides a high-level description of the modular office building model. 

Table 7A.2.2 provides the U.S. Department of Energy’s (DOE’s) key schedules for the model. 

Table 7A.2.3 provides a high-level description of the modular classroom building model. Table 

7A.2.4 provides DOE’s key schedules for the modular classroom model. Table 7A.2.5 provides a 

high-level description of the telecommunication shelter building model. Table 7A.2.6 provides 

DOE’s key schedules for the telecommunication shelter model.
7A-2 

Table 7A.2.1 Description of DOE Modular Office Building Model 

Item Description

Program

Available Fuel Types Electricity

Building Type (Principal Building Function) OFFICE

Building Prototype Modular Office

Form

Total Floor Area (ft2) 1,568

(56 ft × 28 ft)

Building Shape 

Aspect Ratio 2.0

Number of Floors 1

Window Fraction

(Window-to-Wall Ratio) 15% 

Window Locations Even distribution among all four sides

Shading Geometry None

Azimuth E-W

Thermal Zoning 1 Zone

Floor to Ceiling Height (feet) 7.5
7A-3 

Item Description

Architecture

Exterior Walls

 Construction Wood-Frame Walls

 U-factor (Btu / h * ft2 * °F) and/or

 R-value (h * ft2 * °F / Btu)

ASHRAE 90.1-2004 Requirements

Nonresidential; Walls, Above-Grade, Wood-Framed

Roof

 Construction Attic Roof 

 U-factor (Btu / h * ft2 * °F) and/or

 R-value (h * ft2 * °F / Btu)

ASHRAE 90.1-2004 Requirements

Nonresidential; Roofs, Attic and Other

Window

 U-factor (Btu / h * ft2 * °F) ASHRAE 90.1-2004 Requirements

 SHGC (all) Nonresidential; Vertical Glazing

 Operable Area 0

Foundation 

Foundation Type Crawlspace

 Construction Wood Frame

 Thermal Properties for Ground Level 

Floor

 U-factor (Btu / h * ft2 * °F) 

ASHRAE 90.1-2004 Requirements

Nonresidential; Floors Wood Frame & Other

Infiltration 

 Infiltration EnergyPlus Airflow Network with Equivalent Leakage Area based on 7 ACH

HVAC

System Type

 Heating Type Electric Furnace or Single Package Vertical Heat Pump

 Cooling Type Single Packaged Vertical Air Conditioning or Heat Pump

HVAC Sizing

 Air Conditioning Autosized to design day

 Heating Autosized to design day

HVAC Control

 Thermostat Setpoint 75 °F Cooling/70 °F Heating

 Thermostat Setback 85 °F Cooling/60 °F Heating

 Economizers Various by climate location and cooling capacity if >65,000 Btu/h

Per ASHRAE 90.1-2004

 Ventilation ASHRAE Ventilation Standard 62.1-2004 

0.1 cfm/sf

Supply Fan

 Fan Schedules See under HVAC Operation Schedules, Below
7A-4 

Item Description

 Supply Fan Total Power 9-9.5 EER: 154 W/ton

>=10 EER: 113.6 W/ton

Internal Loads & Schedules

Lighting 

 Average Power Density (W/ft2) 1.0

 Schedule See under Schedules, Below

Plug load

 Average Power Density (W/ft2) 0.63

 Schedule See under Schedules, Below

Occupancy

 Average People (5.6 persons/1,000 sf)

 Schedule See under Schedules, Below
7A-5 

Table 7A.2.2 Key Schedules for DOE Modular Office Building Model 

Schedule Type Through Day of Week 1 am 2 am 3 am 4 am 5 am 6 am 7 am 8 am 9 am 10 am 11 am Noon

Internal Loads Schedules

BLDG_LIGHT_SCH Fraction Through 12/31

WeekDay 0.18 0.18 0.18 0.18 0.18 0.23 0.23 0.42 0.9 0.9 0.9 0.9

Weekend 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18

WinterDesignDay 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesignDay 1 1 1 1 1 1 1 1 1 1 1 1

BLDG_EQUIP_SCH Fraction Through 12/31

WeekDay 0.5 0.5 0.5 0.5 0.5 1 1 1 1 1 1 1

Weekend 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

WinterDesignDay 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesignDay 1 1 1 1 1 1 1 1 1 1 1 1

BLDG_OCC_SCH Fraction Through 12/31

WeekDay 0 0 0 0 0 0 0.11 0.21 1 1 1 1

Weekend 0 0 0 0 0 0 0 0 0 0 0 0

WinterDesignDay 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesignDay 1 1 1 1 1 1 1 1 1 1 1 1

HVAC Schedules

HVACOperationSchd

(Fan Schedule) on/off Through 12/31

WD, SummerDesign 0 0 0 0 0 0 1 1 1 1 1 1

Sat, WinterDesign 0 0 0 0 0 0 1 1 1 1 1 1

Sun, Hol, Other 0 0 0 0 0 0 0 0 0 0 0 0

1 pm 2 pm 3 pm 4 pm 5 pm 6 pm 7 pm 8 pm 9 pm 10 pm 11 pm Mid

Internal Loads Schedules

BLDG_LIGHT_SCH Fraction Through 12/31

WeekDay 0.8 0.9 0.9 0.9 0.9 0.61 0.42 0.42 0.32 0.32 0.23 0.18

Weekend 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18

WinterDesignDay 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesignDay 1 1 1 1 1 1 1 1 1 1 1 1

BLDG_EQUIP_SCH Fraction Through 12/31

WeekDay 0.94 1 1 1 1 0.5 0.2 0.2 0.2 0.2 0.2 0.2

Weekend 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

WinterDesignDay 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesignDay 1 1 1 1 1 1 1 1 1 1 1 1

BLDG_OCC_SCH Fraction Through 12/31

WeekDay 0.53 1 1 1 1 0.32 0.11 0.11 0.11 0.11 0.05 0

Weekend 0 0 0 0 0 0 0 0 0 0 0 0

WinterDesignDay 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesignDay 1 1 1 1 1 1 1 1 1 1 1 1

HVAC Schedules

HVACOperationSchd

(Fan Schedule) on/off Through 12/31

WD, SummerDesign 1 1 1 1 1 1 1 0 0 0 0 0

Sat, WinterDesign 1 1 1 1 1 1 0 0 0 0 0 0

Sun, Hol, Other 0 0 0 0 0 0 0 0 0 0 0 0
7A-6 

Table 7A.2.3 Description of DOE Modular Classroom Building Model 

Item Description

Program

Available Fuel Types Electricity

Building Type (Principal Building 

Function) Education

Building Prototype Modular Classroom

Form

Total Floor Area (ft2) 1,568

(56 ft × 28 ft)

Building Shape 

Aspect Ratio 2.0

Number of Floors 1

Window Fraction

(Window-to-Wall Ratio) 15%

Window Locations Even distribution among all four sides
7A-7 

Item Description

Shading Geometry None

Azimuth E-W

Thermal Zoning 1 Zone

Floor to Ceiling Height (feet) 7.5

Architecture

Exterior walls

 Construction Wood-Frame Walls

 U-factor (Btu / h * ft2 * °F) and/or

 R-value (h * ft2 * °F / Btu)

ASHRAE 90.1-2004 Requirements

Nonresidential; Walls, Above-Grade, Wood-Framed

Roof

 Construction Attic Roof

 U-factor (Btu / h * ft2 * °F) and/or

 R-value (h * ft2 * °F / Btu)

ASHRAE 90.1-2004 Requirements

Nonresidential; Roofs, Attic and Other

Window

 U-factor (Btu / h * ft2 * °F) ASHRAE 90.1-2004 Requirements

 SHGC (all) Nonresidential; Vertical Glazing

 Operable Area 0

Foundation 

Foundation Type Crawlspace

 Construction Wood Frame

 Thermal Properties for Ground 

Level Floor

 U-factor (Btu / h * ft2 * °F) 

ASHRAE 90.1-2004 Requirements

Nonresidential; Floors Wood Frame & Other

Infiltration 

 Infiltration EnergyPlus Airflow Network with Equivalent Leakage Area based on 7 ACH

HVAC

System Type

 Heating Type Electric Furnace or Single Package Vertical Heat Pump

 Cooling Type Single Packaged Vertical Air Conditioning or Heat Pump

HVAC Sizing

 Air Conditioning Autosized to design day

 Heating Autosized to design day

HVAC Control

 Thermostat Setpoint 75 °F Cooling/70 °F Heating

 Thermostat Setback 85 °F Cooling/60 °F Heating

 Economizers Various by climate location and cooling capacity if >65,000 Btu/h

Per ASHRAE 90.1-2004
7A-8 

Item Description

 Ventilation ASHRAE Ventilation Standard 62.1-2004 

0.37 cfm/sf

Supply Fan

 Fan Schedules See under HVAC Operation Schedules, Below

 Supply Fan Total Power 9-9.5 EER: 154 W/ton

>=10 EER: 113.6 W/ton

Internal Loads & Schedules

Lighting 

 Average Power Density (W/ft2) 1.4

 Schedule See under Schedules, Below

Plug load

 Average Power Density (W/ft2) 1.4

 Schedule See under Schedules, Below

Occupancy

 Average People (25 persons/1,000 sf)

 Schedule See under Schedules, Below
7A-9 

Table 7A.2.4 Key Schedules for DOE Modular Classroom Building Model 

Schedule Type Through Day of Week 1 am 2 am 3 am 4 am 5 am 6 am 7 am 8 am 9 am 10 am 11 am Noon

Internal Loads Schedules

BLDG_LIGHT_SCH Fraction

1/1–6/15

9/16–12/31

WD, 

SummerDesign 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.9 0.9 0.9 0.9 0.9

Sat, Sun, Hol, 

WinterDesign, 

Other

0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18

6/16–9/15

WD, 

SummerDesign 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.5 0.5 0.5 0.5

Sat, Sun, Hol, 

WinterDesign, 

Other

0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18

BLDG_EQUIP_SCH Fraction

1/1–6/15

9/16–12/31

WD, 

SummerDesign 0.5 0.5 0.5 0.5 0.5 1 1 1 1 1 1 1

Sat, Sun, Hol, 

WinterDesign, 

Other

0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

6/16–9/15

WD, 

SummerDesign 0 0 0 0 0 0 0 0 0 0 0 0

Sat, Sun, Hol, 

WinterDesign, 

Other

1 1 1 1 1 1 1 1 1 1 1 1

BLDG_OCC_SCH Fraction

1/1–6/15

9/16–12/31

WD, 

SummerDesign 0 0 0 0 0 0 0 0 0.95 0.95 0.95 0.95

Sat, Sun, Hol, 

WinterDesign, 

Other

0 0 0 0 0 0 0 0 0 0 0 0

WD, 

SummerDesign 0 0 0 0 0 0 0 0 0.15 0.15 0.15 0.15

Sat, Sun, Hol, 

WinterDesign, 

Other

0 0 0 0 0 0 0 0 0 0 0 0

6/16–9/15 All 0 0 0 0 0 0 0 0 0 0 0 0

HVAC Schedules

HVACOperationSchd

(Fan Schedule) on/off Through 12/31

WD, 

SummerDesign 0 0 0 0 0 0 1 1 1 1 1 1

Sat, WinterDesign 0 0 0 0 0 0 1 1 1 1 1 1

Sun, Hol, Other 0 0 0 0 0 0 0 0 0 0 0 0
7A-10

1 pm 2 pm 3 pm 4 pm 5 pm 6 pm 7 pm 8 pm 9 pm 10 pm 11 pm Mid

Internal Loads Schedules

BLDG_LIGHT_SCH Fraction

1/1–6/15

9/16–12/31

WD, 

SummerDesign 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.18 0.18 0.18

Sat, Sun, Hol, 

WinterDesign, 

Other

0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18

6/16–9/15

WD, 

SummerDesign 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.18 0.18 0.18 0.18

Sat, Sun, Hol, 

WinterDesign, 

Other

0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18 0.18

BLDG_EQUIP_SCH Fraction

1/1–6/15

9/16–12/31

WD, 

SummerDesign 0.95 0.95 0.95 0.95 0.95 0.35 0.35 0.35 0.35 0.35 0.35 0.35

Sat, Sun, Hol, 

WinterDesign, 

Other

0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35

6/16–9/15

WD, 

SummerDesign 0.5 0.5 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25

Sat, Sun, Hol, 

WinterDesign, 

Other

0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25

BLDG_OCC_SCH Fraction 1/1–6/15

9/15–12/31

WD, 

SummerDesign 0.95 0.95 0.95 0.95 0.15 0.15 0.15 0.15 0.15 0 0 0

Sat, Sun, Hol, 

WinterDesign, 

Other

0 0 0 0 0 0 0 0 0 0 0 0

WD, 

SummerDesign 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0 0 0

Sat, Sun, Hol, 

WinterDesign, 

Other

0 0 0 0 0 0 0 0 0 0 0 0

6/16–9/15 All 0 0 0 0 0 0 0 0 0 0 0 0

HVAC Schedule

HVACOperationSchd

(Fan Schedule) on/off Through 12/31

WD, 

SummerDesign 1 1 1 1 1 1 1 0 0 0 0 0

Sat, WinterDesign 1 1 1 1 1 1 0 0 0 0 0 0

Sun, Hol, Other 0 0 0 0 0 0 0 0 0 0 0 0
7A-11

Table 7A.2.5 Description of DOE Telecommunication Shelter Model 

Item Description

Program

Available Fuel Types Electricity

Building Type (Principal Building Function) Telecom

Building Prototype Telecommunication Shelter

Form

Total Floor Area (ft2) 240

(20 ft × 12 ft)

Building shape 

Aspect Ratio 1.67

Number of Floors 1

Window Fraction

(Window-to-Wall Ratio) 0% 

Window Locations None

Shading Geometry None

Azimuth E-W

Thermal Zoning 1 Zone

Floor to Ceiling Height (feet) 8.5

Architecture

Exterior walls

 Construction Masonry Walls

 U-factor (Btu / h * ft2 * °F) and/or

 R-value (h * ft2 * °F / Btu) R-10 Continuous Insulation

Roof
7A-12

Item Description

 Construction Masonry

 U-factor (Btu / h * ft2 * °F) and/or

 R-value (h * ft2 * °F / Btu) R-10 Continuous Insulation

Foundation 

Foundation Type Slab On Grade

 Construction

 Thermal Properties for Ground Level 

Floor

 U-factor (Btu / h * ft2 * °F) 

R-10 Continuous Insulation above Slab

Infiltration 

 Infiltration EnergyPlus Airflow Network with Equivalent Leakage Area based on 1.0 ACH

HVAC

System Type

 Heating Type Electric Furnace

 Cooling Type Single Packaged Vertical Air Conditioner

HVAC Sizing

 Air Conditioning Autosized to design day

 Heating Autosized to design day

HVAC Control

 Thermostat Setpoint 75 °F Cooling/60 °F Heating

 Thermostat Setback No setback

 Economizers Modeled both with and without economizer. 

Economizer electronic enthalpy economizer, non-integrated, 72 °F high limit, ElectronicEnthalpyCurveA

 Ventilation 0.0 cfm/sf

Supply Fan

 Fan Schedules See under HVAC Operation Schedules, Below

 Supply Fan Total Power 9-9.5 EER: 154 W/ton

>=10 EER: 113.6 W/ton

Internal Loads & Schedules

Lighting 

 Average Power Density (W/ft2) Not Modeled

 Schedule See under Schedules, Below

Plug load

 Average power Density (W/ft2) 44

 Schedule See under Schedules, Below

Occupancy

 Average people (0 persons)
7A-13

Item Description

 Schedule See under Schedules, Below

Table 7A.2.6 Key Schedules for DOE Telecommunication Shelter Model 

Schedule Type Through Day of Week 1 am 2 am 3 am 4 am 5 am 6 am 7 am 8 am 9 am 10 am 11 am Noon

Internal Loads Schedules

BLDG_LIGHT_SCH Fraction Through 12/31

WD, Sat, Sun, Hol 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesign 0 0 0 0 0 0 0 0 0 0 0 0

WinterDesign 0 0 0 0 0 0 0 0 0 0 0 0

BLDG_EQUIP_SCH Fraction Through 12/31

WD, Sat, Sun, Hol 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65

SummerDesign 1 1 1 1 1 1 1 1 1 1 1 1

WinterDesign 0 0 0 0 0 0 0 0 0 0 0 0

BLDG_OCC_SCH Fraction Through 12/31

WD, Sat, Sun, Hol 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesign 0 0 0 0 0 0 0 0 0 0 0 0

WinterDesign 0 0 0 0 0 0 0 0 0 0 0 0

HVAC Schedule

HVACOperationSchd on/off Through 12/31 All 1 1 1 1 1 1 1 1 1 1 1 1

1 pm 2 pm 3 pm 4 pm 5 pm 6 pm 7 pm 8 pm 9 pm 10 pm 11 pm Mid

Internal Loads Schedules

BLDG_LIGHT_SCH Fraction Through 12/31

WD, Sat, Sun, Hol 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesign 0 0 0 0 0 0 0 0 0 0 0 0

WinterDesign 0 0 0 0 0 0 0 0 0 0 0 0

BLDG_EQUIP_SCH Fraction Through 12/31

WD, Sat, Sun, Hol 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65

SummerDesign 1 1 1 1 1 1 1 1 1 1 1 1

WinterDesign 0 0 0 0 0 0 0 0 0 0 0 0

BLDG_OCC_SCH Fraction Through 12/31

WD, Sat, Sun, Hol 0 0 0 0 0 0 0 0 0 0 0 0

SummerDesign 0 0 0 0 0 0 0 0 0 0 0 0

WinterDesign 0 0 0 0 0 0 0 0 0 0 0 0

HVAC Schedules

HVACOperationSchd on/off Through 12/31 All 1 1 1 1 1 1 1 1 1 1 1 1
7A-14

7A.3 SPVAC AND SPVHP EQUIPMENT PERFORMANCE CURVES

Table 7A.3.1 provides performance curves used in modeling SPVAC and SPVHP 

condenser performance. Coefficients for the equipment performance curves used in Energy Plus 

were generated by fitting available manufacturers’ data for SPVAC and SPVHP equipment to 

the performance curve equations. 
7A-15

Table 7A.3.1 Performance Curves Used in SPVAC and SPVHP Modeling

Type Performance Curve

Equation Curve Coefficients

a b c d e f

SPVAC

Total Cooling Capacity Function of Temperature Curve

e ODB WBf ODB

COOL CAP FT dWBcWBba ODB

××+×+

×+×+×+=−−

2

2

0.258637 0.102735 -0.000897 -0.024854 0.000343 -0.000687

Total Cooling Capacity Function of Flow Fraction Curve 

2 COOL CAP FF ba FF c×+×+=−− FF 0.525 0.725 -0.25 NA NA NA

Energy Input Ratio Function of Temperature Curve

d ODB e ODB WBf ODB

COOL EIR FT WBcWBba

××+×+×+

×+×+=−−

2

2

0.464816 0.021310 -0.000623 0.002048 0.000260 -0.000049

Energy Input Ratio Function of Flow Fraction Curve 

2 COOL EIR FF ba FF c×+×+=−− FF 1.5578 -0.7241 0.16628 NA NA NA

Cooling Part Load Fraction Correlation Curve

2 COOL EIR PLR ba PLR c×+×+=−− PLR 0.81 0.19 0.0 NA NA NA

SPVHP

Heating Capacity Function of Temperature Curve

2 HEAT CAP FT ba ODB c ×+×+=−− ODB 0.741102 0.024257 0.000311 NA NA NA

Heating Capacity Function of Flow Fraction Curve

2 HEAT CAP FF ba ODB c ×+×+=−− ODB 0.97465 0.02535 0.00000 NA NA NA

Heating Energy Input Ratio Function of Temperature Curve

2 3 HEAT EIR FT ba ODB c ODB c ×+×+×+=−− ODB 1.254425 -0.03009 0.000984 -0.000039 NA NA

Heating Energy Input Ratio Function of Flow Fraction 

Curve

2 HEAT EIR FF ba FF c×+×+=−− FF

1.453214 -0.44034 -0.01287 NA NA NA

Heating Part Load Fraction Correlation Curve

2 HEAT EIR FPLR ba PLR c×+×+=−− PLR 0.81 0.19 0.0 NA NA NA
7A-16

For Table 7A.3.1, the where list is as follows: 

COOL CAP −− FT = total cooling capacity function of temperature, 

COOL CAP −− FF = total cooling capacity function of flow fraction curve, 

COOL EIR −− FT = energy input ratio function of temperature, 

COOL EIR −− FF = energy input ratio function of flow fraction, 

COOL EIR −− FPLR = total cooling part load fraction correlation curve name, 

HEAT CAP −− FT = heating capacity function of temperature curve name, 

HEAT CAP −− FF = heating capacity function of flow fraction curve name, 

HEAT EIR −− FT = heating energy input ratio function of temperature curve name, 

HEAT EIR −− FF = heating energy input ratio function of flow fraction curve name, 

HEAT EIR −− FPLR = heating part load fraction correlation curve name, 

WB = entering evaporator coil wet-bulb temperature (°F),

ODB = outside dry-bulb temperature (°F), and

PLR = part load ratio (cooling load/steady-state capacity).

Normalized performance curves for the SPVAC and SPVHP condensing units were 

developed based on manufacturers’ catalog data for Bard Manufacturing Company SPVAC and 

SPVHP equipment (Bard W30A1 (Cap) and WH48 (EIR)) for cooling performance and (Bard

W36H1) equipment for heating performance as a function of coil entering temperature 

conditions.1 2 3 Manufacturers’ data to develop equipment performance curves as a function of air 

flow were not readily available. Performance curves for airflow and part load correlation were 

based on other small single compressor package equipment. Nomenclature used for the left hand 

side of each performance curve equation is based on DOE2.1E descriptors for these parameters 

and is not normally found in the EnergyPlus documentation. 
7A-17

REFERENCES

1. Bard Manufacturing Company, Inc. The Wall-Mount Air Conditioners - 9.0 EER, (60HZ). 

2012. Bryan, OH. Form No. S3397. 

<www.bardhvac.com/digcat/S3364_TechDoc_CD/TechDoc-PDF/S3397.pdf> 

2. Apte, M.G., W.J. Fisk, and L. Rainer. High Performance Commercial Building Systems, 

Report on Initial Energy Simulations, Element 6 – Indoor Environmental Quality, Project 

2.1 – Energy Simulations and State-Wide Energy Savings. 2002. Prepared by Davis Energy 

Group, Inc. for Lawrence Berkeley National Laboratory, Berkeley, CA. Report No. HPCBS 

#E6P2.1T1b. <http://energy.lbl.gov/BT/HPCBS/pubs/E6P21T1b.pdf> 

3. Bard Manufacturing Company, Inc. The Wall-Mount Heat Pumps - (60HZ). 2012. Bryan, 

OH. Form No. S3398. <www.bardhvac.com/digcat/S3364_TechDoc_CD/TechDocPDF/S3398.pdf>