Refrigerants & Reclaim

July 2, 2013: EPA Warns Against Use of Propane as R-22 Substitute

Unapproved Propane-Containing Refrigerants Pose Fire and Explosion Risk
July 2, 2013
The U.S. Environmental Protection Agency (EPA) is warning HVAC technicians, home improvement contractors, propane manufacturers and sellers, and homeowners of the potential safety hazards related to the use of propane or other unapproved refrigerants in residential air conditioning systems.


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The Professor: Recognizing, Solving Refrigerant Migration

Eliminating Refrigerant from the Compressor’s Suction Line or Crankcase
July 1, 2013

During the off cycle, or especially during a long shutdown, refrigerant will want to travel, or migrate, to a place where the pressure is the lowest. 


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HCs: Revisions, Efficiencies, Warnings

Examining, Tweaking, and Considering the Legality of Hydrocarbon Refrigerants
July 1, 2013

The road to wider use of HC refrigerants remains a rocky one — although it is still being navigated. The latest developments involve more revisions to the regulatory landscape, the tweaking of a refrigerant mix to make it more energy efficient in certain applications, and, as always, warnings about flammability.


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HRAI Warns Fire Marshals of Flammable Refrigerant

Refrigerant Contains 'Extremely Flammable' Mixture of Propane and Isobutene
July 1, 2013

HRAI released a statement revealing that fire services could be at an additional risk when responding if the building has a highly flammable hydrocarbon refrigerant in its air conditioning system.


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June 24, 2013: SAE’s Final R-1234yf Safety Research Says Risk Is Minimal

R-1234yf Refrigerant Is Determined to be Safe to Use
June 24, 2013
Utilizing input from Daimler, SAE International initiated additional safety research looking at R-1234yf, a new low global warming potential (GWP) refrigerant that can be used in automotive applications. SAE said its original risk assessment is still valid: risks are well below the risks commonly viewed as acceptable.


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European Rapporteur Recommends Widespread HFC Refrigerant Ban

Recommendation Would Prohibit HFC Use in HVAC Units
June 24, 2013

A widespread ban of HFCs has been recommended to the European Parliament by the F-Gas Regulation review’s rapporteur, Bas Eickhout, Dutch Green MEP, who has also called for a series of significant amendments to the European Commission’s proposal, published late last year.


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Learning About CO2 as a Refrigerant

As Uses Grow, Need For Training Increases
June 24, 2013
As the industry continues to introduce more equipment using CO2 as a refrigerant, the need for training to work with that gas is growing. In a recent announcement, Scotland-based Star Refrigeration is offering training in that regard through its Star Learning Solutions program.


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Examining Condensing Trends through Practical Applications

HVAC Contractors Put High Ambients, Low Pressures, and New Refrigerants to the Test
June 10, 2013

As familiar as condensing units are in refrigeration systems, these components are undergoing major changes. Several of those changes are being demonstrated in a number of practical applications nationwide. 


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Coils 101: A Basic Review

A Brief Look at A Coils, Slant Coils, and H Coils
June 10, 2013

There are several designs for airflow through the evaporator coil, and for draining the condensate water from the coil, depending on the installation. The different designs are known as the A coil, the slant coil, and the H coil.


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Microchannel Coils Heading Toward Refrigeration Applications

Residential Market Expands to Commercial HVAC; Refrigeration on Deck
June 10, 2013

Those small-diameter coils — with names like MicroGroove, microchannel, and micro-multichannel — have gained a beachhead in residential heating and air conditioning, and are advancing in commercial HVAC, with refrigeration on the horizon.


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