OpenBuildings Energy Simulator Pre-configured HVAC Systems
Calculation of Design Energy Cost/Energy Cost Budget and Calculation of the Proposed/Baseline Building Performance.
OpenBuildings Energy Simulator provides pre-configured HVAC systems that can be used for the Calculation of Design Energy Cost/Energy Cost Budget and Calculation of the Proposed/Baseline Building Performance that comply with the ASHRAE 90.1 standard’s Section 11.3 and Appendix G.3.1 requirements. The following table lists all the available pre-configured HVAC systems, information regarding their heating and cooling performance parameters and the equivalent systems types listed in the standard’s modeling requirements for the budget building (Section 11.3.2) and proposed/baseline building (Appendix G3.1.1A and G3.1.1B).
Available Pre-configured HVAC Systems | Heating | Cooling | Standard 90.1 HVAC System | |
Section 11, Energy Cost Budget Method (Figure 11.3.2) | Appendix G, Performance Rating
Method
Noted in the System Description field in OpenBuildings Energy Simulator HVAC Manager. (Tables G3.1.1A and G3.1.1B) |
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Convective Hot Water Baseboards | Natural gas boiler with convective baseboards | None | N/A | N/A |
Fan Coil with Electric Heat | Electric Resistance | Electric Water-Cooled Chiller with 2-speed Cooling Tower | System 5 | N/A |
Four Pipe Fan Coil | Natural gas hot water boiler, hot water heating coil | Electric Water-Cooled Chiller with 2-speed Cooling Tower | System 7 | N/A |
Four-Pipe Fan Coil with Central Ducted DX-based DOAS with Electric Heat | Four Pipe Fan Coil – Natural gas hot water boiler, hot water heating coil DOAS - Electric heating and preheating coils | Four Pipe Fan Coil – Electric Water-Cooled Chiller with 2-speed Cooling Tower DOAS – Electric DX Cooling | N/A | N/A |
Four-Pipe Fan Coil with Central Ducted DX-based DOAS with Gas Heat | Four Pipe Fan Coil – Natural gas hot water boiler, hot water heating coil DOAS – Natural gas heating coil, electric preheating coil | Four Pipe Fan Coil – Electric Water-Cooled Chiller with 2-speed Cooling Tower DOAS – Electric DX Cooling | N/A | N/A |
Four-Pipe Fan Coil with Central Ducted DX-based DOAS with Hot Water Heat | Four Pipe Fan Coil – Natural gas hot water boiler, hot water heating coil DOAS – Natural gas hot water boiler, hot water heating coil; electric preheating coil | Four Pipe Fan Coil – Electric Water-Cooled Chiller with 2-speed Cooling Tower DOAS – Electric DX Cooling | N/A | N/A |
Four-Pipe Fan Coil with Central Ducted DX-based DOAS with HX-Assisted Dehumid and Hot Water Heat | Four Pipe Fan Coil – Natural
gas hot water boiler, hot water heating coil
DOAS – Natural gas hot water boiler, hot water heating coil; electric preheating coil |
Four Pipe Fan Coil – Electric Water-Cooled Chiller with 2-speed Cooling Tower DOAS – Electric DX Cooling, Heat Exchanger-Assisted for improved dehumidification | N/A | N/A |
Four-Pipe Fan Coil with Central Ducted Water-Based DOAS | Four Pipe Fan Coil – Natural gas hot water boiler, hot water heating coil DOAS – Natural gas hot water boiler, hot water heating coil; electric preheating coil | Electric Water-Cooled Chiller with 2-speed Cooling Tower | N/A | N/A |
Packaged Single Zone AC Air-Cooled DX with Gas Heat | Natural gas heating coil | Electric DX Cooling | System 11 | System 3 |
Packaged Single Zone HP Air-to-Air DX with Electric Supplemental Heat | Electric Heat Pump with Supplemental Electric Heat Coil | Electric Heat Pump | System 9 | System 4 |
PTAC Air-Cooled DX with Electric Heat | Electric Heating Coil | Electric DX Cooling | N/A | N/A |
PTAC Air-Cooled DX with Gas Heat | Natural gas heating coil | Electric DX Cooling | N/A | N/A |
PTAC Air-Cooled DX with Hot Water Heat | Natural gas hot water boiler, hot water heating coil | Electric DX Cooling | System 10 | System 1 |
PTAC Air-Cooled DX with Electric Heat and Central Ducted DOAS | Electric Heating Coil | Electric DX Cooling | N/A | N/A |
PTAC Air-Cooled DX with Gas Heat and Central Ducted DOAS | Natural gas heating coil | Electric DX Cooling | N/A | N/A |
PTHP Air-to-Air DX with Electric Supplemental Heat | Electric Heat Pump with Supplemental Electric Heating Coil | Electric Heat Pump | System 8 | System 2 |
PTHP Air-to-Air DX with Gas Supplemental Heat | Electric Heat Pump with Supplemental Natural Gas Heating Coil | Electric Heat Pump | N/A | N/A |
PTHP Air-to-Air DX with Electric Supplemental Heat and Central Ducted DOAS | PTHP - Electric Heat Pump with Supplemental Electric Heating Coil DOAS – Electric heating and preheating coils | Electric DX Cooling | N/A | N/A |
PTHP Air-to-Air DX with Gas Supplemental Heat and Central Ducted DOAS | PTHP - Electric Heat Pump with Supplemental Natural Gas Heating Coil DOAS – Natural gas heating coil, electric preheating coil | Electric DX Cooling | N/A | N/A |
Packaged VAV Air-Cooled DX with Gas Heat and Electric Reheat | Natural gas heating coil | Electric DX Cooling | N/A | N/A |
Packaged VAV Air-Cooled DX with Hot Water Heat | Natural gas boiler, hot water heating and reheat coils | Electric DX Cooling | System 4 | System 5 |
Packaged VAV Air-Cooled DX with PFP Boxes and Electric Heat | Electric heating coil | Electric DX Cooling | System 3 | System 6 |
VAV with PFP Boxes Water-Cooled Chiller and Electric Heat | Electric heating and reheat coils | Electric Water-Cooled Chiller with 2-speed Cooling Tower | System 1 | System 8 |
VAV with SFP Boxes Water-Cooled Chiller and Electric Heat | Electric heating and reheat coils | Electric Water-Cooled Chiller with 2-speed Cooling Tower | N/A | N/A |
VAV with SFP Boxes Water-Cooled Chiller and Hot Water Heat | Natural gas hot water boiler, hot water heating coil | Electric Water-Cooled Chiller with 2-speed Cooling Tower | N/A | N/A |
VAV with Water-Cooled Chiller and Hot Water Heat | Natural gas hot water boiler, hot water heating coil | Electric Water-Cooled Chiller with 2-speed Cooling Tower | System 2 | System 7 |
Warm Air Furnace with Electric Heat | Electric heating coil | None | . | System 10 |
Warm Air Furnace with Gas Heat | Natural gas heating coil | None | . | System 9 |
Water-Source Heat Pump | Hybrid Electric Evaporative Fluid Cooler, Natural Gas Boiler | Electric Heat Pump | System 6 | N/A |