Complete the LEED Online credit form to determine your total refrigerant impact per ton.
Complete the LEED Online credit form to determine your total refrigerant impact per ton.
Complete the LEED Online credit form to determine your total refrigerant impact per ton.
These refrigerant calculations may be performed in-house if you have a qualified mechanical engineer to verify the results. You may incur additional costs if you need to hire an engineer to complete the calculations.
This credit also encourages selection of equipment that will last a long time and minimizes refrigerant leakage. Refrigerant charge efficiency, annual leakage rate, and end-of-life refrigerant loss all contribute to your total refrigerant impact per ton. Therefore, equipment selection, as well as refrigerant selection, has a substantial influence on the environmental impact of your HVAC system.
In the context of existing buildings, it is very unlikely that natural refrigerants can be used, due to their low rate of cooling efficiency.
Some HVAC systems use natural refrigerants, including water, carbon dioxide, and ammonia, which have much lower environmental impact.
The Refrigerant Impact Calculator in the LEED Credit Form lists default values for a number of the most common refrigerants (such as R-22, R-134a, and others). However, your building system may use a refrigerant that is not included in the list. If this is the case, select the “other” option in the calculator and consult with a qualified engineer or reputable source to determine the correct ODP and GWP values for your refrigerant.
Consider the time that will be spent by administrative or maintenance personnel in administering any programs. Procedures, policies, and enforcement mechanisms may need to be developed.
Focus on “big ticket” items when seeking reused materials for the LEED credit. High-priced materials like flooring that meet the reuse requirement may represent enough value to earn the credit. This approach allows you to Iimit the overall number of items you need to track and document, while reducing contractor headaches. If big-ticket items are not enough, target a medium-priced item next, and so on, until you reach your goal.
Before implementing any programs to reduce reliance on single occupancy vehicles, assess the likelihood that tenant occupants will actually use them; you may have to provide carpooling incentives to motivate people to share rides, for example. See Resources for more information on rideshares and carpools.
Focus on “big ticket” items when seeking reused materials for the LEED credit. Materials like wood flooring or structural lumber that meet the reuse requirement may represent enough value to earn the credit. This approach allows you to Iimit the overall number of items you need to track and document, which greatly reduces contractor headaches. If big-ticket items are not enough, target a medium-priced item next, and so on, until you reach your goal.