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GRI-03/0159 Gas Interchangeability Tests - Evaluating the Range of Interchangeability of Vaporized LNG and Natural Gas April 2003
Summary LNG is poised to play an increasingly important role in U.S. natural gas supplies. One of the issues of interest to the industry is the degree to which natural gas from LNG is interchangeable with pipeline quality gas in terms of its performance in combustion equipment, especially if the heavier hydrocarbon components become more concentrated during handling. This research evaluated the sensitivity of selected burners to compositions typical of LNG that is rich in heavier hydrocarbons. The selected burners represent a variety of U.S. residential appliances. The study replicated previous methods that were used to study interchangeability to demonstrate their applicability to LNG; identified a set of indices that can be used to predict combustion behavior; investigated several ways to reduce the heating value of LNG; and related the performance of a specially designed test burner to the performance of a variety of residential appliances. The research determined interchangeability indices for natural gases used in the U.S. and for a range of anticipated world LNG imports to the U.S. It determined that, for the residential burners studied, expected LNG compositions are adequately interchangeable with U.S. pipeline gases if their heating value and density are suitably adjusted by dilution with air or nitrogen. Availability Note: Full report is available online. | | ||||||||||||||||||||
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