Heat Exchanger Design Optimization for Mitigation of Diesel Engine Exhaust Fouling

Aiello, Victor C.; Kini, Girish; Staedter, Marcel A.; Garimella, Srinivas

doi:10.1115/1.4049416

Heat Exchanger Design Optimization for Mitigation of Diesel Engine Exhaust Fouling

Journal Article · Mon Jan 18 04:00:00 EST 2021 · Journal of Energy Resources Technology

DOI:https://doi.org/10.1115/1.4049416· OSTI ID:1848186

Aiello, Victor C. ^[1]; Kini, Girish ^[2]; Staedter, Marcel A. ^[2]; Garimella, Srinivas ^[2]

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332; OSTI
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

Abstract

The design optimization of a diesel exhaust-coupled heat and mass exchanger that drives a 2.71 kW cooling capacity absorption heat pump is presented in this study. Fouling layer thermal resistance and pressure drops from single-tube experiments are used to develop a thermodynamic, heat transfer, and pressure drop model for the exhaust-coupled desorber. A parametric study is performed to select a desorber design that meets system performance while minimizing footprint. Experimental heat duties and pressure drops are within 10% and 3%, respectively, of the model predictions. Thus, large data sets from single-tube experiments with representative geometries are successful in accounting for fouling effects at the component level. Desorber design optimization based on this approach ensures continued heat pump performance after fouling. This study, along with the single-tube experiments, presents a systematic approach to design exhaust-coupled heat exchangers while considering the effects of fouling. These results are applicable for a wide range of waste-heat recovery applications, and this method can be extended to different geometries and operating conditions.

Research Organization:: Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

DOE Contract Number:: AR0000370

OSTI ID:: 1848186

Journal Information:: Journal of Energy Resources Technology, Journal Name: Journal of Energy Resources Technology Journal Issue: 5 Vol. 143; ISSN 0195-0738

Publisher:: ASME

Country of Publication:: United States

Language:: English

References (13)

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