Parameters Affecting the Performance of a Residential-Scale Stationary Fuel Cell System

[+] Author and Article Information
Mark W. Davis

 National Institute of Standards and Technology, Heat Transfer and Alternative Energy Systems Group, Gaithersburg, MD 20899-8632mark.davis@nist.gov

A. Hunter Fanney, Michael J. LaBarre, Kenneth R. Henderson, Brian P. Dougherty

 National Institute of Standards and Technology, Heat Transfer and Alternative Energy Systems Group, Gaithersburg, MD 20899-8632

J. Fuel Cell Sci. Technol 4(2), 109-115 (May 08, 2006) (7 pages) doi:10.1115/1.2713767 History: Received March 11, 2005; Revised May 08, 2006

Researchers at the National Institute of Standards and Technology have measured the performance of a residential fuel cell system when subjected to various environmental and load conditions. The system, which uses natural gas as its source fuel, is capable of generating electrical power at three nominal power levels (2.5, 4.0, and 5.0kW) while providing thermal energy for user-supplied loads. Testing was conducted to determine the influence of ambient temperature, relative humidity, electrical load, and thermal load on system performance. Steady-state and transient tests were conducted. The steady-state tests were performed in accordance with the American Society of Mechanical Engineering Fuel Cell Power Systems Performance Test Code (PTC-50) for fuel cell power systems. The results of the investigation are being used to develop a proposed rating procedure for residential fuel cell units.

Copyright © 2007 by American Society of Mechanical Engineers
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Figure 1

Schematic of NIST Residential Fuel Cell Test Facility

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Figure 2

Performance during a 50% to 100% shift in grid-interconnected mode

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Figure 3

Performance during a 50% to 100% shift in grid-independent mode

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Figure 4

Quasi-steady fluid inlet temperature test

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Figure 5

Electrical performance degradation



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