R1234yf and R1234ze(E) as low-GWP refrigerants for residential heat pump water heaters; Le R1234yf et le R1234ze(E) comme frigorigènes à faible GWP pour des chauffe-eau domestiques à pompe à chaleur

Nawaz, Kashif; Shen, Bo; Elatar, Ahmed; Baxter, Van; Abdelaziz, Omar

doi:10.1016/j.ijrefrig.2017.06.031

R1234yf and R1234ze(E) as low-GWP refrigerants for residential heat pump water heaters; Le R1234yf et le R1234ze(E) comme frigorigènes à faible GWP pour des chauffe-eau domestiques à pompe à chaleur

Journal Article · Tue Jul 04 00:00:00 EDT 2017 · International Journal of Refrigeration

DOI:https://doi.org/10.1016/j.ijrefrig.2017.06.031· OSTI ID:1376470

^[1]; Shen, Bo ^[1]; Elatar, Ahmed ^[1]; Baxter, Van ^[1]; Abdelaziz, Omar ^[1]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Owing to the growing concerns about the relatively high global warming potential (GWP) of current refrigerants, a serious effort is currently in progress to find lower-GWP substitutes. The hydrofluoroolefin (HFO)-based refrigerants R1234yf and R1234ze(E) are being considered for use in multiple heating, ventilation, air conditioning, and refrigeration applications because of their very low GWP. A study was conducted to model a residential heat pump water heater using these HFOs. A system model was calibrated using experimental data and the calibrated model was used to evaluate the potential of HFOs to replace R134a. A series of parametric analyses were used to investigate the impacts of condenser wrap pattern, condenser tube size, evaporator size, and heat loss factor from the storage tank. It has been shown that both R1234yf and R1234ze(E) can be substituted for R134a with comparable performance and no substantial modifications to the original system. Finally, this study presents a detailed feasibility analysis for successful replacement of high-GWP refrigerants with low-GWP refrigerants with acceptable performance.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1376470

Alternate ID(s):: OSTI ID: 1550417

Journal Information:: International Journal of Refrigeration, Journal Name: International Journal of Refrigeration Vol. 82; ISSN 0140-7007

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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