Analysis of biogas compression system dynamics

Mirko Morini, Michele Pinelli and Mauro Venturini

Applied Energy, 2009, vol. 86, issue 11, 2466-2475

Abstract: The use of biogas for energy production has progressively increased in recent years, due to an increasing interest both in agricultural and energy policies of many industrialized countries. Biogas compression by means of natural gas infrastructure seems the most immediate solution, but could also lead to problems due to the different physical properties of the two gases. In this paper, a non-linear one-dimensional modular dynamic model is developed and used for the simulation of compression system transient behavior. The arrangement consists of a main line, where the compressor operates, and an anti-surge control, which consists of a recycle loop activated by a fast acting valve. Different maneuvers (start-up, normal operation, emergency shutdown and operating point variation) are simulated by using two different working fluids (methane and biogas). Simulations prove that the design of the surge protection system should consider the fluid to be elaborated. Moreover, system predisposition to surge increases as the ratio between system volumes and the inertia of the rotating masses increases.

Keywords: Compression; Dynamics; Surge; Natural; gas; Biogas; Hydrogen (search for similar items in EconPapers)
Date: 2009
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Citations: View citations in EconPapers (1)

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