Simulation Output

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Project Summary

Project Code R-R-A-675\654-2201 E
Project Location Riyadh
Climate Zone Zone 1
Project Type (New or Existing) Existing building
Typology Apartments -
Built-up Area 150 m2

Performance Summary

Energy Efficiency Label Class Achieved C
Energy Use Intensity (EUI) - SBC 107.4 kWh/m2
Energy Use Intensity (EUI) - Design 76.3 kWh/m2
Energy Use Relative Index (EURI) 71.1
Points Achieved 29
Performance of Lighting Systems (PLS) 135
Performance of Building Insulation (PBIn) 140.5
Performance of Airconditioning Systems (PACs) 100
Airconditioning Load Performance 43.8
Overall Performance of Airconditioning Systems (OPACs) 43.8
Annual Energy Consumption with Evaporative Cooling NA kWh
Annual Energy Generated by Rooftop Solar PV 10018.1 kWh
Annual Energy Consumption with Rooftop Solar PV 1429.2 kWh
Energy Use Intensity with Rooftop Solar PV (EUI) 9.5 kWh/m2y
Energy Use Intensity with Evaporative Cooling (EUI) NA kWh/m2y
Overall Performance of Air Condioning with Evaporative Cooling (OPACS) NA kWh/m2y
Energy Use Intensity with Rooftop Solar PV and Evaporative Cooling (EUI) NA kWh/m2y
Total Annual Energy Use for SBC 16110 kWh
Total Annual Energy Use for Design 11447.3 kWh
Total Cooling Demand Design 2.5 kWh
Total Cooling Demand SBC 4.4 kWh
Scenario Points EUI Label
Solar PV NA NA
with Evap NA NA
with Evap and Rooftop Solar PV NA NA
Detailed report

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Disclaimer

This report is prepared by Environmental Design Solutions Private Limited [EDS] for the DAR Engineering (DAR) and Saudi Energy Efficiency Center (SEEC). This report is part of the “Development of a Building Energy Simulation Tool & EUI Building Rating Project [REF: DB 121]” project.

This report has been prepared for the purpose set out in Terms of Engagement between EDS and DAR and is solely for the use of SEEC and DAR. Information contained in this report is current as at the date of the report and may not reflect any event or circumstances which occur after the date of the report. This report is an outcome of the best efforts and technical judgement of EDS. EDS does not accept any duty, liability, or responsibility to any person or entity in relation to this report.

Contents
  1. Energy Efficiency Labelling Summary
  2. Project description
    1. Area Statement
    2. Floor Plans (as modelled)
  3. Simulation Parameters
    1. Building Envelope
    2. Lighting and Equipment
    3. Heating Ventilation and Air Conditioning
    4. Onsite Solar Photovoltaic (PV)
  4. Analysis Results
  5. Annexure 01: PBIn, PLS and PACs Calculations
  6. Annexure 02: Detailed Model Inputs
    • Project Details
    • Envelope Details
    • Lighting Setpoints Details
    • Equipment Details
    • HVAC Details
    • Fractional Operating Schedules
      • Occupancy Schedule
      • Lighting Schedule
      • HVAC Schedule
  7. Annexure 03: Detailed Model Outputs
Abbreviations
AEC Annual Energy Consumpation in kWh
BGA Building Gross Area
CDD Colling Degree Days
COP Coefficient of Performance
EEI Energy Efficiency Index
EER Energy Efficiency Rao
EFLH Equivalent Full Load Hours
EPD Equipment Power Density
EUI Energy Use Intensity
HDD Heang Degree Days
HVAC Heang Venlaon and Air Condioning
IT Informaon Technology
kW Kilo Was
kWh Kilo Wa Hour
Label EUI for New Buildings
LPD Lighng Power Density
Lu/w Lumens per wa
MEPS Minimum Energy Performance Standard
QR Quick Response Code
Ra Color Rendering
SASO Saudi Standards, Metrology and Quality Organizaon
SBC Saudi Building Code
SEEC Saudi Energy Efficiency Center
SHGC Solar Heat Gain Coefficient
SRS Soware Requirements Specificaon
Tool Simulaon Tool
PACSn or PACSe Performance of AC System (n - new buildings and e - exisng buildings)
PBIn or PBIe Performance of Building Insulaon (n - new buildings and e - exisng buildings)
PLSn or PLSe Performance of Lighng System (n - new buildings and e - exisng buildings)
Definitions

Auto Sized : System capacity calculated by the software based on user inputs.

BGA : Building Gross Area is the total building area in square meters excluding parking area.

EUI : Energy Use Intensity is a global indicator and it’s calculated by dividing the total yearly consumption over the total area, and for the purpose of calculating the EUI for Saudi Arabia, the formula shall account for parking areas as illustrated under clause 3.1.2. (of the RFQ document). Thus, the general EUI formula for Saudi Arabia shall be determined during the development phase of the simulation tool.

EURI : Energy Use Relative Index is measured by dividing the estimated EUI as per the design submitted by design office for new construction, or a default value set depend on age of the building or an audited actual data submitted by authorized auditor for existing building, over the estimated reference EUI as per the requirement of SBC (601-602) and it is calculated as follow:

Eq. (1)

EURIn = 100 X EUI Design/ EUI ref or EURIe = 100 X EUI default or audited/EUI ref

PACS : Performance of A/C system is measured by dividing the estimated PACS as per the design submitted by design office (end-user) or a default value set depend on age of the building, or an audited actual data submitted by authorized auditor for existing building over the estimated reference PACS as per the requirement of SBC (601-602) and it is calculated as follow:

Eq. (2)

PACSn = 100 X (1- PACS Design/ PACS ref) or PACSIe = 100 X (1- PACS default or audited/PACS ref)

PBI : Performance of building insulation is measured by dividing the estimated PBI as per the design submitted by design office (end-user) or a default value set depend on age of the building, or an audited actual data submitted by authorized auditor for existing building over the estimated reference PBI as per the requirement of SBC (601-602) and it is calculated as follow:

Eq. (3)

PBIn = 100 X (1- PBI Design/ PBI ref) or PBIe = 100 X (1-PBI default or audited/PBI Ref)

PLS : Performance of lighting system is measured by dividing the estimated PLS as per the design submitted by design office (end-user) or a default value set depend on age of the building, or an audited actual data submitted by authorized auditor for existing building over the estimated reference PLS as per the requirement of SBC (601-602) and it is calculated as follow:

Eq. (4)

PLSn = 100 X PLS Design/ PLS ref or PLSe = 100 X PLS default or audited/PLS ref

1. Energy Efficiency Labelling Summary

  • Project Code
 : R-R-A-675_654-2201#E
  • Project Location
 : Riyadh
  • Climate Zone
 : Zone 1
  • Project Type (New or Existing)
 : Existing building
  • Typology
 : Apartments -
  • Built up Area
 : 150.00
Energy Efficiency Label Class Achieved C
Energy Use Intensity (EUI) - SBC 107.4 kWh/m2
Energy Use Intensity (EUI) - Design 76.3 kWh/m2
Energy Use Relative Index (EURI) 71.1
Points Achieved 29
Performance of Lighting Systems (PLS) 135
Performance of Building Insulation (PBIn) 140.5
Performance of Airconditioning Systems (PACs) 143.8
Annual Energy Consumption with Evaporative Cooling NA kWh
Annual Energy Generated by Rooftop Solar PV 10018.1 kWh
Annual Energy Consumption with Rooftop Solar PV 1429.2 kWh
Energy Use Intensity with Rooftop Solar PV (EUI) 9.5 kWh/m2y
Energy Use Intensity with Evaporative Cooling (EUI) NA kWh/m2y
Energy Use Intensity with Rooftop Solar PV and Evaporative Cooling (EUI) NA kWh/m2y

2.Project description

  • Project Code
 : R-R-A-675_654-2201#E
  • Project Location
 : Riyadh
  • Climate Zone
 : Zone 1
  • Project Type (New or Existing)
 : Existing building
  • Typology
 : Apartments -
  • Number of Floors
 : 1

2.1 Area Statement

The project space types and areas are categorised in the table below:

Table 1 : Area description

Floors Occupancy type Area (sqm)
Ground Residential 150
Total Residential 150.00

3 Simulation Parameters

The Baseline Building was developed based on the prescriptive requirements of the Saudi Building Code 2019. The Proposed building has been modeled as per actual design. Following are the parameters considered for simulating the Baseline and the Proposed buildings:

3.1 Building Scope

Table 3: Comparison of Envelope Parameters

Component Baseline Design Proposed Design
Wall U value (W/m2·°C) 0.56 0.56
Floor Slab U value (W/m2·°C) 0.496 2.37
Roof U value (W/m2·°C) 0.262 0.262
Roof Reflectance %
Fenestration U value (W/m2·°C) 2.382
SHGC 0.251 6.5
VLT 0.251 <li>Floor#1:11.8</li>
Window to Wall Ratio % 16 16
Shading Devices None None

3.2 Lighting and Equipment

Parameter Units Baseline Design Proposed Design
Interior Lighting PowerDensity (W/ft2) W/sqm 10
Equipment Power Density W/sqm 2.5 2.5

3.3 Heating Ventilation and Air Conditioning

Units Baseline Design Proposed Design
Primary HVAC system type NA Split Split
Cooling Capacity kW Auto sized (Calculated by software)
  • Floor#1 : 24000 * 1
Fan Power kW/CFM
Cooling Efficiency EER
  • Floor#1:11.8
    Evaporative Cooling Yes/No/NA NA NA
    % Area served by Evaporative Cooling % NA NA

    3.4 Onsite Solar Photovoltaic (PV)

    Parameter Units Baseline Design Proposed Design
    Onsite Solar PV Yes/No/NA NA Yes

    4 Analysis Results

    End Use Units Baseline Design Proposed Design Energy / Demand Savings
    Heating - General Electricity [kWh] 2422.7 2558.6
    Cooling - General Electricity [kWh] 7301.3 3027.6
    Interior Lighting - General Electricity [kWh] 1499.6 974.7
    Exterior Lighting - General Electricity [kWh] 0 0
    Interior Equipment - General equipment Electricity [kWh] 1332.8 1332.8
      - Refrigerator Electricity [kWh] 264.4 264.4
      - Washing Machine Electricity [kWh] 248.4 248.4
    Exterior Equipment - Water-heater Electricity [kWh] 3040.8 3040.8
    Fans - General Electricity [kWh] 0 0
    Pumps - General Electricity [kWh] 0 0
    Heat Rejection - General Electricity [kWh] 0 0
    Humidification - General Electricity [kWh] 0 0
    Heat Recovery - General Electricity [kWh] 0 0
    Water Systems - General Electricity [kWh] 0 0
    Refrigeration - General Electricity [kWh] 0 0
    Generators - General Electricity [kWh] 0 0
    Total Annual Energy Use Consumption (kWh) 16110 11447.3
    Energy Use Intensity (EUI) kWh/m2yr 107.4 76.3
    Energy Use Relative Index (EURI) Ratio 71.1
    Achieved Label Class A to I Scale C
    Performance of Building Insulation (PBIn) 140.5
    Performance of Lighting System (PLS) 135
    Performance of Air Conditioning System (PACs) 143.8
    Annual Energy Consumption with Evaporative Cooling kWh/yr
    Annual Energy Generated by Rooftop Solar PV kWh/yr 10018.13
    Annual Energy Consumption with Rooftop Solar PV kWh 1429.2
    Energy Use Intensity with Rooftop Solar PV (EUI) kWh/m2y 9.5
    Energy Use Intensity with Evaporative Cooling (EUI) kWh/m2y NA
    Energy Use Intensity with Rooftop Solar PV and Evaporative Cooling (EUI) kWh/m2y NA
    Annual Energy Use Consumption
    Energy Consumption Breakup by End Use
    Proposed Design
    Baseline Design

    5. Annexure 01: PBIn, PLS and PACs Calculations

    Performance of Building Insulation (PBIn)
    PBI Design (KW) 7725.1
    PBI Baseline (KW) 12973.5
    PBI 140.5
    Performance of Lighting System (PLS)
    PLS Design (KW) 975
    PLS Baseline (KW) 1500
    PLS 135
    Performance of Airconditioning Systems (PACs)
    PACs Design (KW)
    PACs Baseline (KW)
    PACs -43.8

    6. Annexure 02: Detailed Model Inputs

    Variable inputs

    Project Details
    Envelope Details
    Surface Type Opaque Element Construction Assembly U-Value ( W/m2K )
    Walls, Above-Grade 0.6
    Walls, Below-Grade 0.6
    Floors 2.4
    Roofs 0.3
    Fenestration Fenestration Type Fenestration Assembly U-Value ( W/m2K ) SHGC ( % ) VLT ( % )
    Vertical Glazing 2.7 0.250
    Skylight 4.3 0.360
    Opaque Doors 2.8
    Lighting Details
    Space Type Area Lighting System Type Number of Luminaires Watts / Luminaires
    Equipment Details
    Equipment Number of Equipment Year of Installation Annual Consumption per Unit
    Refrigerator 1 2022 263
    Washing Machines 1 2022 247
    Water Heater 3 2022 1008
    HVAC Details
    Floor #1
    HVAC Type Year of Purchase Capacity
    (Btu/h)    		 Number of units Efficiency unit Efficiency Air flow rate
    (CMH)    		 Fan power
    (W)    		 Fan control Pump power
    (W)    		 Pump control
    Split 2022 24000 1 11.8

    Fractional Operating Schedules

    Occupancy schedule
    Hours Weekdays Weekend Holidays Summer Design Day Winter Design Day
    1 0.97 0.8 0.8 1 0
    2 0.9 0.9 0.9 1 0
    3 0.9 0.9 0.9 1 0
    4 0.9 0.9 0.9 1 0
    5 0.9 0.9 0.9 1 0
    6 0.9 0.9 0.9 1 0
    7 0.7 0.9 0.9 1 0
    8 0.4 0.9 0.5 1 0
    9 0.2 0.9 0.5 1 0
    10 0.2 0.6 0.5 1 0
    11 0.2 0.4 0.4 1 0
    12 0.2 0.4 0.4 1 0
    13 0.2 0.6 0.4 1 0
    14 0.4 0.6 0.4 1 0
    15 0.4 0.6 0.4 1 0
    18 0.6 0.5 0.5 1 0
    17 0.5 0.5 0.5 1 0
    16 0.4 0.6 0.5 1 0
    19 0.6 0.5 0.5 1 0
    20 0.7 0.6 0.5 1 0
    21 0.7 0.6 0.5 1 0
    23 0.8 0.7 0.7 1 0
    22 0.8 0.6 0.5 1 0
    24 0.9 0.8 0.7 1 0
    Lighting schedule
    Hours Weekdays Weekend Holidays Summer Design Day Winter Design Day
    1 0.033 0.033 0.033 1 0
    2 0.033 0.033 0.033 1 0
    3 0.033 0.033 0.033 1 0
    4 0.033 0.033 0.033 1 0
    5 0.033 0.033 0.033 1 0
    6 0.066 0.033 0.066 1 0
    7 0.066 0.033 0.099 1 0
    9 0.066 0.099 0.099 1 0
    8 0.066 0.033 0.099 1 0
    11 0.066 0.099 0.099 1 0
    10 0.066 0.099 0.099 1 0
    12 0.066 0.099 0.099 1 0
    13 0.066 0.099 0.099 1 0
    14 0.066 0.099 0.099 1 0
    15 0.066 0.099 0.099 1 0
    17 0.198 0.198 0.165 1 0
    16 0.198 0.198 0.165 1 0
    19 0.231 0.132 0.165 1 0
    18 0.198 0.198 0.165 1 0
    20 0.231 0.132 0.231 1 0
    21 0.264 0.132 0.231 1 0
    22 0.264 0.264 0.231 1 0
    24 0.132 0.264 0.132 1 0
    23 0.198 0.264 0.198 1 0
    HVAC schedule
    Hours Weekdays Weekend Holidays Summer Design Day Winter Design Day
    1 1 1 1 1 1
    2 1 1 1 1 1
    3 1 1 1 1 1
    4 1 1 1 1 1
    7 1 1 1 1 1
    5 1 1 1 1 1
    6 1 1 1 1 1
    8 1 1 1 1 1
    9 1 1 1 1 1
    10 1 1 1 1 1
    11 1 1 1 1 1
    12 1 1 1 1 1
    14 1 1 1 1 1
    13 1 1 1 1 1
    15 1 1 1 1 1
    16 1 1 1 1 1
    17 1 1 1 1 1
    19 1 1 1 1 1
    18 1 1 1 1 1
    20 1 1 1 1 1
    21 1 1 1 1 1
    22 1 1 1 1 1
    24 1 1 1 1 1
    23 1 1 1 1 1