Abstract
This paper evaluates the biodiesel produced by a biodiesel plant located in the Mexican Centre for Cleaner Production (CMP + L by its acronym in Spanish) of the National Polytechnic Institute of Mexico. Pollutant emissions from two types of engines were studied: a low power monocylinder engine and a 30-kW electric generator diesel engine. The tests were performed with the following blends: B5, B10, B15, B20, B30, B40, and B50. Parameters such as carbon monoxide, nitrogen oxide, hydrocarbons, and combustion efficiency were analyzed, as well as sulfur dioxide, oxygen, and combustion temperatures. It was demonstrated that NOx increases as the percentage of biodiesel increases, while CO decreases slightly using the monocylinder engine. In the case of the electric generator diesel engine, the B5 mixture had the highest trend for NOx and the lowest trend for CO. Likewise, combustion efficiency was found to be severely affected by the biodiesel blends, i.e., from B5 to B20. An analytical study and experimental thermography tests of the combustion process with biodiesel blends were carried out, and the technical problems of operation when incorporating biodiesel blends are presented.
Highlights
The industrial revolution established new forms of production, such as serial and mass production.Since the use of fossil fuels has been an indispensable energy resource
In comparison to pure diesel, it was observed that the B50 blend displayed a decrease of 11.5% in chimney temperature with respect to the B0; there was a decrease in the percentage of oxygen (O2 ) in the exhaust gases, showing a decrease of 1.14% for the B50 test with respect to B0
An experiment was carried out with parameters similar to those used in this article, with the use of biodiesel derived from jojoba and carbon nanotubes of multiple walls to measure the performance of the engine
Summary
The industrial revolution established new forms of production, such as serial and mass production. The use of fossil fuels has been an indispensable energy resource. Some of the consequences of its use are damage to the environment and the health of living beings. An example of this is Mexico City, which is one of the most polluted places in the world, where the implementation of the Kyoto protocol was carried out in 1997.
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