March 2026

Conference Paper

Heat transfer and visual observation of pool boiling of next-generation low-pressure refrigerant: R1336mzz(Z)

By:
Yang, Cheng-Min ; Murugan, Muneeshwaran ; Brechtl, Jamieson M; Nawaz, Kashif
Page Number:
1129
Book Title:
7th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
Publication Date:
March 12, 2026
Publisher Location:
IIF, France
Conference Name:
7th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
Conference Location:
College Park, Maryland, United States of America
Conference Sponsor:
IIR International Congress of Refrigeration
View DOI Listing:
https://doi.org/10.18462/iir.tptpr2025.1129

Abstract

R1336mzz(Z) is a non-flammable and non-toxic hydrofluoroolefin (HFO), which is a potential alternative working fluid for multiple applications such as centrifugal chillers, industrial high temperature heat pumps, and Organic Rankine Cycles. Pool boiling is one of the primary heat transfer modes in shell-and-tube evaporators, and there is limited data for R1336mzz(Z) due to its recent introduction. This study investigated the pool boiling characteristics of R1336mzz(Z) using a closed-loop apparatus. Heat transfer coefficients on a smooth aluminum surface were measured at various heat fluxes with a heating block, and the results were compared to predictions from various correlations. Additionally, a high-speed camera was employed to visualize and analyze the pool boiling behavior of this next-generation low-pressure refrigerant.