Overview
ABSTRACT
After recalling the beneficial effects of the presence of added water during combustion, in terms of its environmental quality, useful energy production, and ultimately lower impact on our environment and on our health, the water vapor pump cycle is presented with its specific benefits. The metrological advantages and the cost of implementing a new metrology particularly suited to wet combustion configurations, called Combustion Hygrometric Diagram (CHD) are also presented.
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Rémi Guillet: Engineer from École Nationale Supérieure de Mécanique de Nantes - Doctorate in mechanical and energetic sciences from the University of Lorraine, Nancy 1 - Degree in economics (Diplôme d'Études Approfondies, Paris 13) - Former R&D engineer at Gaz de France
INTRODUCTION
Energy is a vague concept for most of us. Whether it's human, animal, derived from fire, the combustion of plants and other living matter, or fossil fuel, we all know how essential it is to life, if not life itself.
Fossil energy, by its very nature in a state of storage, is precious precisely because of the very existence of its storage and its capacity to be shipped in a state of storage. In a finite world, it is necessarily in finite supply, even if new deposits continue to be found from time to time.
Contrary to the fears born of the 1973 and subsequent oil crises, the use of fossilized hydrocarbons, however abusive, has not threatened industrial development or Western civilization. It is the environmental impact that remains the real threat to the long-term survival of the economic development model of the so-called developed countries.
While the transition to renewable energies is essential, oil and the hydrocarbons that make it up still have a long way to go to produce the electricity we need for our activities and comfort, and to power commercial and military aircraft and ships. Likewise, automobiles and other land vehicles are not about to dispense with their on-board stock of fuel, which is more or less polluting. And hydrocarbons still account for over 85% of the energy consumed by human activity on the planet today (late 2010s), despite public efforts and subsidies.
The aim here is to show that the challenge of using fossil fuels as cleanly as possible remains an essential one, since any progress towards greater cleanliness has both a resource-saving effect and a reduced environmental impact.
Among the little-known possibilities is wet combustion...
But let's not forget here that the number-one pollutant remains SO 2 , which should require the abandonment of fuel oils with the highest sulfur content, or its elimination before combustion. This is a pollution of which sea freight is the biggest emitter, but which is also found in some smog-prone major metropolises.
SO 2 causes inflammation of the bronchial tubes, leading to coughing and shortness of breath; it is also implicated in many respiratory and heart diseases. It is the main culprit in pollution and other acid rain. In this article, however, it is assumed that the fuel has been treated and is sulfur-free when it enters the combustion chamber. In this context, flue gas desulphurization (SO 2 ) scrubber systems are therefore not discussed at length.
The expression "wet combustion" is an aphorism that contains the idea...
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KEYWORDS
environment | pollution | combustion hygrometric diagram | smog
This article is included in
Physics of energy
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Combustion by wet process (CVH) and steam pump (PAVE)
Bibliography
- (1) - GUILLET (R.) - La combustion par voie humide et ses performances » (118 réf.). - Cette thèse d'octobre 2002 est en ligne http://docnum.univ-lorraine.fr/public/SCD_T_2002_0149_GUILLET.pdf
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Software tools
DHC-2D and DHC-3D software developed at INSA-Rouen http://www.insa-rouen.fr
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Gillier-Pantone system http://www.econologie.com
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