February Chapter Meeting – R in ASHRAE



4:15 PM– 4:45 PM Registration & Networking
4:45 PM – 5:35 PM Technical Session
5:45 PM – 7:00 PM Dinner and Main Session

Tech Session: ASHRAE RP 1808 – Assessment of leakage rate and durability of field-made mechanical joints for systems using low-GWP flammable refrigerants

Main Session: Micro-Distributed Systems

ASHRAE RP-1808 – Assessment of leakage rate and durability of field-made mechanical joints for systems using low-GWP flammable refrigerants

Much concern has been raised recently about the flammability of several low-GWP replacement refrigerant options, such as HFO’s, lower-GWP HFC’s, and flammable natural refrigerant options, regarding the potential leakage or failure of joints in systems using these refrigerants. This paper presents the results of a study investigating the assembly, durability, and leakage rate of different types of field-made joints used in refrigeration and air-conditioning systems. The focus of the project is on flame-free joining methods; in particular, three different types of joints were investigated: Press/crimp fittings, compression fittings, and flare fittings


Speaker Ron Bleche: I have been with Sporlan since 1995.  It will be 24 years in April.  I worked in the factory as a production worker for 6 years, was assigned to Technical Support/Applications for 11 years and have been in the field sales since May 2012.  Went to Ranken Technical College at night – received HVAC 2yr certificate in 2006 and Bachelor of Science in Applied Management in 2008 (Summa Cum Laude both times).  I have been an ASHRAE member since 2012


Micro-Distributed Systems: Increasing awareness of the dangers of climate change and the resulting regulations on high GWP refrigerants have created a need for natural refrigerant solutions in food retail settings.  This presentation introduces the micro-distributed system architecture and how it can be used with R-290 (propane) given the current charge limit of 150 grams per refrigeration circuit.  Basics on the safe use of flammable refrigerants in commercial refrigerators will be presented and the environmental impact of this type of system is compared to centralized parallel rack and distributed systems with R-404A.


Speaker Tim Anderson:  Tim is currently Chief Engineer, Display Cases and Micro-Distributed Systems for Hussmann Corporation.  He has 13 years of experience designing, developing, and testing refrigerated display cases operating with both synthetic and natural refrigerants.  Tim currently is responsible for developing and commercializing new product platform designs and serving as a technical representative to end users of Hussmann-made equipment.