S. M. Sami

University of Scranton

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P. J. Tulej

Université de Moncton

Tam Duong

Lonza (United States)

B. Song

Nanjing University of Aeronautics and Astronautics

Jacek Schnotale

Cracow University of Technology

Thien Duong

University of Illinois Chicago

Bill Poirier

Texas Tech University

Y. Mercadier

Université de Sherbrooke

Rachel Frissell

University of Scranton

Michael A. Lombardi

National Institute of Standards and Technology

N. A. Frissell

University of Scranton

Cooperative Institutions

Université de Moncton

University of Scranton

Citizen (Japan)

New Jersey Institute of Technology

New Mexico Consortium

University of Cuenca

Université de Sherbrooke

Goddard Space Flight Center

Universidad Católica de Cuenca

Case Western Reserve University

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Study of Pressure Drop of Refrigerant Mixtures During Boiling Inside Enhanced Surface Tubing Under Magnetic Field

S. M. Sami Joseph D. Comeau

Two phase flow pressure drop characteristics observed under magnetic field during boiling of refrigerant mixtures R-404A, and R407C as well as R-507 are presented in this paper. Experiments showed that magnetic field has insignificant effect on the pressure drop. It was evident from the boiling data that the magnetic field has insignificant impact on the pressure drop. Boiling data showed was found to be correlated with a mean deviation between of ±20%.

Boiling point

10.1115/imece2005-82463

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Citations (3)

Energy and exergy analysis of new refrigerant mixtures in an Organic Rankine Cycle for low temperature power generation

International Journal of Ambient Energy (2010)

S. M. Sami

SYNOPSIS This paper presents and discusses the performance of environmentally-friendly refrigerant mixtures in an Organic Rankine Cycle (ORC) for power generation. The performance has been compared at low and medium waste heat temperatures to other organic and non-organic fluids. The refrigerant mixtures boil at extremely low temperatures and are capable of efficiently capturing waste heat at temperatures less than 27°C (80°F). The quaternary mixtures are fully HFCs and their compositions can be varied to best recover heat at temperatures up to 482°C (900°F). In this paper, energy and exergy analysis have been presented for the behaviour of the quaternary refrigerant mixtures and compared to other commonly used fluids. Results showed that at this range of heat source temperatures the refrigerant mixtures efficiently recover waste heat and produce power at efficiencies significantly higher than with other working fluids. The results also showed that other low temperature applications are possible and economically viable with the use of these quaternary refrigerant mixtures.

Organic Rankine Cycle

Degree Rankine

Exergy efficiency

Rankine cycle

Environmentally Friendly

10.1080/01430750.2010.9675805

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Citations (9)

Numerical prediction of refrigerant mixtures' condensation inside enhanced surface vertical cylinders

International Journal of Energy Research (1994)

S. M. Sami Yuanyuan Zhou M. N. M. Allam

A lumped parameter model has been developed to predict the liquid filmwise condensation of pure refrigerants, as well as refrigerant mixtures, inside vertical cylinder with enhanced surfaces. The mathematical formulation is based on mass, momentum and energy balance. Several constitutive relationships have been established to describe the various phenomena during condensation. Numerical results indicate that the model fairly predicted the liquid filmwise condensation phenomenon, under various conditions.

Momentum (technical analysis)

10.1002/er.4440180905

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Citations (1)

Performance of residential refrigerators with ternary blends

International Journal of Energy Research (1995)

S. M. Sami P. J. Tulej

Comparative performance studies of ternary blends proposed as substitutes for CFC-12 are presented in this study. The experimental set-up includes a domestic refrigerator for evaluation of blend performance. Experimental data show that the ternary blend NARM-12 consumed 35% less energy than CFC-12, and exhibits shorter cycles at comparable pressure ratios than CFC-12.

10.1002/er.4440190708

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Citations (0)

Heat transfer of ternary mixtures inside enhanced surface tubing

International Communications in Heat and Mass Transfer (2000)

S. M. Sami Daniel E. Desjardins

Zeotropic mixture

10.1016/s0735-1933(00)00166-4

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Citations (5)

Heat transfer characteristics of ternary blends inside enhanced surface tubing

International Communications in Heat and Mass Transfer (1994)

S. M. Sami P. J. Tulej B. Song

Boiling Heat Transfer

10.1016/0735-1933(94)90048-5

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Citations (3)

Flow boiling characteristics of refrigerant mixture R-22/R-114 in the annulus of enhanced surface tubing

Heat Recovery Systems and CHP (1992)

S. M. Sami Tam Duong

Annulus (botany)

Mass flux

10.1016/0890-4332(92)90005-3

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Citations (6)

Performance evaluation of a new four-component HFC blend in a vapour-compression heat pump system

Fuel and Energy Abstracts (1996)

S. M. Sami Byung-Hee Song

Component (thermodynamics)

10.1016/0140-6701(96)89026-6

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Citations (0)

A diagnostic expert system for heat pumps

Energy (1996)

S. M. Sami Yuanyuan Zhou P. J. Tulej

10.1016/0360-5442(95)00102-6

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Citations (1)

Impact of magnetic field on the enhancement of performance of thermal solar collectors using nanofluids

International Journal of Ambient Energy (2018)

S. M. Sami

A numerical mathematical model has been developed to predict the thermal behaviour of thermal solar collectors using nanofluids under different magnetic fields. The model is based upon energy conservation equations for nanofluids flow, heat transfer for different nanofluids and magnetic field. The thermal behaviour of the solar collectors during charging phase has been studied, predicted numerically and analysed using different nanofluid materials and magnetic fields. Comparisons were made against literature data for validation purposes of the predictive model. The model fairly predicted heat absorbed and solar panel efficiency under different nanofluids conditions, magnetic fields and compared well with existing data on the subject.

Solar thermal collector

10.1080/01430750.2018.1437561

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Citations (16)