Refrigerants
😌 Simple Design
Total Refrigerant Charge
The reduction of the total quantity of refrigerants used in the buildings HVAC+R system.
Refrigerant Charge Choices (Carbon Intensity)
Low Carbon (20th percentile). 20th percentile of the total quantity of refrigerants used in the buildings HVAC+R system.
Average (50th percentile). 50th percentile of the total quantity of refrigerants used in the buildings HVAC+R system.
High Carbon (80th percentile). 80th percentile of the total quantity of refrigerants used in the buildings HVAC+R system.
Custom. Enter a custom carbon intensity.
Refrigerant GWP
The average global warming potential (GWP) of refrigerants used in the buildings HVAC+R system. Throughout C.Scale, three options are given for specification-related options: High Carbon, Average, and Low Carbon. Typically, these refer to the 80th, 50th, and 20th percentile of GWP values for available materials. We were unable to replicate this methodology for refrigerants, though, as the overall distribution of refrigerants skews very high–and this highly skewed distribution doesn’t represent the choices designers are making on their projects. In the refrigerant model, these three choices are keyed to specific refrigerants as follows:
Refrigerant GWP Choices (Carbon Intensity)
Low Carbon (20th percentile). Next-Gen Natural Refrigerant (e.g., CO2). GWP Value = 5.
Average (50th percentile). Low-GWP Refrigerant (e.g., R-513). GWP Value = 700.
High Carbon (80th percentile). HFC Refrigerant (e.g., 60% R-410a; 40% R-134). GWP Value = 2000.
Custom. Enter a custom carbon intensity.
🤓 Detailed Design
The Detailed Design configurator supports the input of project-specific data.
To begin using this feature, turn on Detailed Design within the Refrigerant accordion, and then click "Configure Refrigerants".
You can configure refrigerants using the table and the following fields in the right-hand panel:
Count
The quantity of equipment.
Equipment Type
The type of equipment, which determines the refrigerant leakage rate.
Equipment Type Choices
Room AC-Window/Wall/Portable (240P)
Residential AC/HP (Ducted) (240P)
Small Self-Contained AC/HP (PTAC/HP) (240P)
Residential Mini-Split And Multi-Split Ductless AC/HP (240P)
Commercial Ductless VRF Systems (240P)
Light Commercial Rooftop AC/HP Units (5-25 Tons) (240P)
Large Commercial Rooftop AC/HP Units (>25 Tons) (240P)
Water-Cooled Centrifugal & Screw Chillers (All Sizes) (240P)
Air-Cooled Chillers (240P)
Residential Refrigerators & Freezers (240P)
Industrial Refrigeration Including Food Processing And Cold Storage (240P)
Commercial Refrigeration (240P)
Self-Contained Refrigeration Display Cases (240P)
Multiplex Rack Systems (240P)
Remote Condensing Unit Systems (240P)
CIBSE TM65 (Type 3)
LEED
Charge
The refrigerant charge associated with the equipment.
Refrigerant Identifier
The type and purity of the refrigerant included in the equipment.
Refrigerant Identifier
R-11
R-12
R-22
R-23
R-32
R-114
R-116
R-123
R-125
R-134a
R-143a
R-152a
R-218
R-236fa
R-245fa
R-290
R-401A
R-401B
R-401C
R-402A
R-402B
R-403B
R-404A
R-406A
R-407A
R-407B
R-407C
R-407D
R-408A
R-409A
R-410A
R-410B
R-411A
R-411B
R-413A
R-414A
R-414B
R-416A
R-417A
R-420A
R-438A
R-452A
R-452B
R-466A
R-500
R-502
R-503
R-507
R-508B
R-513A
R-514A
R-717
R-744
R-744A
R-123zd(E)
R-1234yf
R-1234ze(e)
R-50
Refrigerant GWP
The GWP of the refrigerant identifier.
Refrigerant Type
The chemical composition of the refrigerant identifier.
ASHRAE Safety Class
The ASHRAE safety class of the refrigerant identifier, which denotes the toxicity and flammability of the refrigerant identifier.
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