855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 173

Extracted Content

o The DES generates 50% of district heating capacity from refrigerant-using

equipment, supplying 50% of the project’s total thermal energy. Refrigerant Leakage Emissions Ratio of 30 is calculated for this equipment.

o The remaining 10% of the project’s annual thermal energy is generated from air

conditioning on-site. Refrigerant Leakage Emissions Ratio of 51 is calculated for this equipment.

o The building does not have any other refrigerant-using systems.

o 75% of the project’s total thermal energy is supplied from refrigerant-using

equipment:

o 75% = (50% x 50%) from DES Heat

o + (100% x 40%) from DES Cooling

o + (100% x 10%) from building systems

o Weighted average Refrigerant Leakage Emissions Ratio (RLER) is 24.8, which is

less than the maximum threshold of 25 required for 2 points.

𝑊 𝑊 ℎ𝑡 𝑡 𝐴 𝐴 𝐴 𝐴 𝑅 𝑅 = (50% × 50% × 30) + (100% × 40% × 15) + (100% × 10% × 51)

= 24.8 ~~75%~~

Project types	Options	Paths	Documentation
Existing Buildings	All	All projects with refrigerants	Refrigerant leakage emissions ratio
Existing Buildings	All	All projects with refrigerants	Attestation that all refrigerant-using equipment in the project is reported in refrigerant inventory and 12- month refrigerant leakage tracking, or narrative identifying allowed exclusions
Existing Buildings	All	(Optional) If DES is included in determination	Weighted average refrigerant leakage emissions ratio
Existing Buildings	All	No refrigerants	Confirm no refrigerant-using equipment is used in the project or in DES equipment serving the project