Share

Laboratory evaluation of R407H for commercial refrigeration.

Number: pap. 2603

Author(s) : RYDKIN I., OHKUBO S., ARIMOTO H., et al.

Summary

Globally and in the US the commercial refrigeration industry is in a transition to refrigerants below a global warming potential of 1500 to meet regulatory requirements. A Class A1 refrigerant blend in the R407 series was developed, R407H, to meet this requirement for commercial refrigeration applications. To evaluate the performance of the blend in medium and low temperature conditions a comparison was performed at Creative Thermal Solutions (Urbana, IL). The laboratory was instrumented to ASHRAE 72 standard requirements and consists of varying capacity, VFD controlled, tandem scroll compressors, coupled with a controlled condenser and running a set of 5 cases with a combined LT load of 2.98kW and combined medium temperature load of 7.86kW. The equipment selected was standard R22/R404A equipment. The system was baselined with R22 and a comparison was made to R404A, and R407H. System effects due to glide, such as frosting, condenser and evaporator efficiency were analyzed and potential control parameters proposed and evaluated. It was determined that R407H utilizing traditional R407 refrigerant chemistry without any additional HFO, Hydrocarbon or CO2 components is suitable as a replacement for existing R22 and R404A systems reaching expected efficiency targets at the target GWP.

Available documents

Format PDF

Pages: 8

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Laboratory evaluation of R407H for commercial refrigeration.
  • Record ID : 30024668
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

Links


See other articles from the proceedings (252)
See the conference proceedings

Indexing