A hybrid compressed natural gas-pneumatic system as a powering option for buses: A comparative assessment

Karaca, Ali Erdogan; Dinçer, İbrahim

doi:10.1016/j.energy.2021.120865

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…Moreover, the charging time taken by an electric vehicle is much more than the time needed to fill the tank of a diesel-powered bus. This can be also seen in related works published by other researchers across the world [66][67].…”

Section: Driving Rangesupporting

confidence: 67%

Life cycle CO₂ footprint reduction comparison of hybrid and electric buses for bus transit networks

et al. 2022

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Section: Driving Rangesupporting

confidence: 67%

Life cycle CO₂ footprint reduction comparison of hybrid and electric buses for bus transit networks

et al. 2022

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“…Lower cost and lower destructive environmental effects in comparison to gasoil and gasoline caused natural gas, in different forms, to be used as one of the common automobile fuel types in many points of the world for the last few decades. One of its most widely used types is compressed natural gas (CNG) which is mainly formed by methane [1,2]. is increasing trend in the use of CNG attracted much attention of experts and scientists working in this area to do experimental, numerical, and analytical research studies.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Cylindrical Damper Effects on Turbine Meters Accuracy in a Pulsating CNG Suction Line: An Optimal Design through CFD Simulations

Faramarzi

Dinarvand

Farzaneh–Gord

et al. 2022

International Journal of Chemical Engineering

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Turbine meters are used in compressed natural gas (CNG) stations in abundance to measure the volumetric flow rate of the inlet gas. These types of meters are very sensitive to oscillating and pulsating flows. When the station’s reciprocating compressor starts to work, due to the piston and valve performance, pulsating flow will create in the suction line and downstream of turbine meter. This pulsation makes false pulses in the meter and finally makes difference between the measured gas flow from the metering of the gas company and the amount of gas that has been sold at the station. In this study, numerical simulation of dampeners has been investigated after turbine meter and before entering gas to compressor. The goal is eliminating or reducing the effects of operating compressor in CNG station on turbine meter and reducing measurement errors. Numerical simulation of dampener was investigated by Ansys-Fluent CFD software for a CNG station with the gas inlet pressure 250 psi, inlet and outlet pipe diameter of 2 inches. In this study, several parameters such as (1) height-to-diameter ratio in the cylinder, (2) distance between dampener and compressor, and (3) volume-to-minimum volume ratio according to API 618, have been checked. The numerical results show that by increasing height-to-diameter ratio up to 3, the pulsating amplitude on Plane 1 will be reduced, and this is the best ratio according to the present results. Also, by increasing the outlet pipe length, the pressure pulsation amplitude decreases from 3.4% of pressure line in 2 m length to 0.7% in 5 m length. Moreover, the results showed 2.4% increase and 1.9% decrease in the maximum and minimum pressure for CV = 1 and CV = 16.7, respectively. Comparing fluent numerical method with previous studies shows less than 2% difference that demonstrates the validity and reliability of present investigation.

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Development and analysis of new pneumatic based powering options for transit buses: A comparative assessment

Karaca

Dinçer

Nitefor

2022

Energy Conversion and Management

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A hybrid compressed natural gas-pneumatic system as a powering option for buses: A comparative assessment

Cited by 8 publications

References 13 publications

Life cycle CO₂ footprint reduction comparison of hybrid and electric buses for bus transit networks

Life cycle CO₂ footprint reduction comparison of hybrid and electric buses for bus transit networks

Analysis of Cylindrical Damper Effects on Turbine Meters Accuracy in a Pulsating CNG Suction Line: An Optimal Design through CFD Simulations

Development and analysis of new pneumatic based powering options for transit buses: A comparative assessment

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