Evaluation of the productivity of biogas from cow manure, vegetables, fruits, and paper waste for operating SI engines

ABSTRACT

In this research, the design of a low-cost modified anaerobic digester that contributes to improving biogas production in cold winter climates has been investigated. A laboratory biogas production plant consists of two anaerobic fermentation systems has been constricted, the first is conventional and the other is modified. Tests and measurements were carried out on the station in the current study to reveal the productivity of the modified design and the influence of the different operating conditions. It was noted that the productivity of the three modified tanks has always been higher than conventional during the 45 days. It is also found that on March 1, 2022, the highest values of the intensity of solar radiation and the ambient air temperature were recorded compared to the rest of the months, where they recorded 1059 W/m² and $27.17$ respectively. Fuel engine tests showed that the maximum engine brake power and thermal brake efficiency were found to be 2620 W and 34% with gasoline fuel at an engine speed of 3000 rpm and 2000 rpm respectively. The obtained engine test results reveal that the produced biogas can be produced locally from other wastes and used to operate gasoline engines.

KEYWORDS:

• Biogas
• SI engine
• cow dung
• vegetables
• fruits
• paper waste

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Naseer T. Alwan

Naseer T. Alwan obtained his PhD in Renewable Energy Engineering from Ural Federal University, Russia. Currently working at the Northern Technical University, Iraq.

Obed Majeed Ali

Obed Majeed Ali obtained his PhD in Mechanical Engineering (Internal Combustion Engine and Alternative Fuels) from University Malaysia Pahang, Malaysia. Currently works at Northern Technical University.

Omar Rafae Alomar

Omar Rafae Alomar a Research Engineer with more than eleven years of experience in Computational Fluid Dynamics (CFD) and heat transfer analyses of fluid flow and heat transfer inside porous media.