ASHRAE has issued Proposed Addendum E to Standard 15.2-2022, which would raise the charge limit for flammable refrigerants in outdoor heat pumps and air-conditioning.
Propane-based heat pumps, up to 30% more efficient than R410A, have the greatest potential for quick growth in the American market, he says.
The grant funds research and development of a load-flexible, plug-and-play, modular unit to provide space comfort and water heating.
Viessmann Refrigeration Solutions also recently announced partnership with Epta.
Following UL and pending EPA approval of higher charge limits for hydrocarbon-based commercial cases, the EIA would like to see UL pass similar codes for ACs and heat pumps.
With 148g of propane, the unit delivers up to 20% more efficiency than R452A refrigerant.
The new units will complement the U.S. manufacturer’s existing water-cooled propane monoblocks, which have been found to cut lifetime CO2 emissions by 6% compared to HFC alternatives.
Christina Starr of the EIA will address cooling and heating: charge-limit standards and codes for A3 refrigerants.
The company customizes R600a systems that simultaneously chill and heat with hot water discharge temperatures up to 240°F.
EPA recognized True Manufacturing, Minus Forty QBD, Beverage-Air, Hoshizaki America and Welbilt.
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