Research article


Waleed K.ElHelew1, Abdullah M. Abdelmaqsoud2, Khaleed F. El Bagoury3, and Hayder A. Shanan4,*

Online First: October 10, 2022

Energy is considered one of the most important factors in the process of production. In this paper, using a gasoline engine (single cylinder with air-cooling), which used to operate an irrigation pump with a discharge diameter of 2 inches was used, which was an Egyptian manufacture, many of the measurements were carried 2021 year in workshops of Agricultural Engineering Department, Faculty of Agriculture, Ain Shams University, Egypt. Several types of mixers were manufactured to mix natural gas with air before entering the engine. Using iron pipes of different diameters, four types of mixers were used (90 angle T mixer, 45 angle T mixer, 30 angle T mixer, and venture mixer "VM"). The engine shift speeds were 1750, 2300, 2900, and 3500 rpm. Two types of fuel were used (gasoline and natural gas) to operate the water pump. The results here dealt with studying the analysis of technical indicators for the types of mixers used in mixing natural gas with air to operate the irrigation pump. where the actual power (Braking power) is superior to all types when operating with gasoline was (3.07 kW) A comparison with the use of natural gas, where the mixer type (T45) (2.83 kW ) was 7.8% less than gasoline. The lowest Specific fuel consumption (S.fc) for gasoline was (219.025 gm/Kw.h) at an engine speed of (2900 rpm), The lowest (S.fc) for the types of mixers was the mixer (T45) was (234.612 gm/Kw.h) at an engine speed of (2900 rpm) and an increase of 6.6. % over gasoline. The highest pump discharge was with the T45 mixer (528.133 L/min), an increase of 2.1% over gasoline. The highest actual hydraulic power with 45T type mixer compared to other type T mixers (0.6 kw) was 10.5% lower than that of gasoline. As for the economic indicators, the lowest net present value (NPV) at the mixer type (T90) was (77219.5), and the highest (NPV) when carrying the mixer type (T45) was (106900.7). That the lowest benefit-cost ratio (B/C) was the mixer type (VM) was (1.38), and the highest (B/C) when carrying the mixer type (T45) was (1.54).


Natural gas, mixer, Specific fuel consumption, pump's discharge, Engine speed, hydraulic power, Economic study.