Thermal balance of a four stroke SI engine operating on hydrogen as a supplementary fuel

Yüksel, Fi̇kret; Ceviz, Mehmet Akif

doi:10.1016/s0360-5442(03)00090-2

Cited by 68 publications

(24 citation statements)

References 9 publications

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“…The overall cooling load for the four gas compositions is between 7 and 12% higher than the corresponding values for gasoline operation (17e26%; refer [21,69]) and approaches/surpass the general upper limit for typical diesel operation (16e35%; refer [21,70]). Further, while the overall cooling loads are higher for syngas fueled operation, an increase in the cooling load with mixture H 2 fraction is also observed.…”

Section: Energy Flow Analysis and Addressing The Cooling Loadmentioning

confidence: 96%

Influence of fuel hydrogen fraction on syngas fueled SI engine: Fuel thermo-physical property analysis and in-cylinder experimental investigations

Shivapuji

Dasappa

2015

International Journal of Hydrogen Energy

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Section: Energy Flow Analysis and Addressing The Cooling Loadmentioning

confidence: 96%

Influence of fuel hydrogen fraction on syngas fueled SI engine: Fuel thermo-physical property analysis and in-cylinder experimental investigations

Shivapuji

Dasappa

2015

International Journal of Hydrogen Energy

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“…Marine diesel engines have been widely used as the primary power suppliers for fishing and merchant ships [1]. When a marine diesel engine operates in the zone of good efficiency, only 30-45% of the energy obtained by fuel combustion can be transferred into shaft power output [2][3][4], while approximately one third of the energy is wasted along with the exhaust gases [5]. Consequently, the waste heat recovery of engine exhaust gas is important for improving the fuel efficiency and achieving the goal of energy conservation in marine diesel engines [6,7].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental investigation of an absorption refrigeration and pre-desalination system for marine engine exhaust gas heat recovery

Yuan

Sun

Zhang

et al. 2019

Applied Thermal Engineering

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Absorption-refrigeration-cycle-based exhaust gas heat recovery technology is effective in improving the thermal efficiency and fuel economy of marine diesel engines. However, the absorption refrigeration system is inflexible in the start-stop operation, and this cannot fulfil the fluctuating demand of refrigeration. This paper presents both the theoretical and experimental investigations of an absorption refrigeration and freezing pre-desalination-based marine engine exhaust gas heat recovery system. The energy storage subcycle is introduced to overcome the energy underutilisation and balance the excessive refrigerating output of the absorption refrigeration cycle. Seawater is utilised as the phase-change material and it is pre-desalinated in the energy storage subcycle. A mathematical model of the system is established and experimental investigation is conducted. Furthermore, the theoretical and experimental performances are compared, and an economic analysis of seawater desalination is performed to evaluate its economy. The results show that the total refrigeration output of the system ranges from 6.1 kW to 9.9 kW, and the system COP (Coefficient of Performance) can reach 16% under the experimental operating conditions. Additionally, the salinity of pre-desalinated seawater can be reduced to below 10 ppt. Moreover, the cost of RO (Reverse Osmosis) seawater desalination can be reduced by 26% through the predesalination process of seawater.

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“…Changing the type of fuel in the engine may result in a reduction of heat losses, as shown in the work [22], where the use of hydrogen instead of gasoline reduced heat loss to the cooling fluid with unchanged exhaust heat loss. In addition, efficiency can be improved by adding an additional fluid to the combustion chamber.…”

Section: Introductionmentioning

confidence: 99%

Energetic Analysis of the Aircraft Diesel Engine

2019

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The analysis of the distribution of thermal energy generated during the combustion process in internal combustion engines and the estimation of individual losses are important regarding performance and efficiency. The article analyses the energy balance of the designed two-stroke opposed piston diesel engines with offset, i.e. the angle by which the crankshaft at the side of exhaust ports is ahead of the crankshaft at the side of intake ports. Based on the developed zero-dimensional engine model, a series of simulations were performed in steady-state conditions using the AVL BOOST software. The values of individual energy losses, including cooling losses, exhaust gas losses, friction losses were obtained. The influence of decreasing and increasing the offset on the performance of the tested engine was analysed.

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Thermal balance of a four stroke SI engine operating on hydrogen as a supplementary fuel

Cited by 68 publications

References 9 publications

Influence of fuel hydrogen fraction on syngas fueled SI engine: Fuel thermo-physical property analysis and in-cylinder experimental investigations

Influence of fuel hydrogen fraction on syngas fueled SI engine: Fuel thermo-physical property analysis and in-cylinder experimental investigations

Theoretical and experimental investigation of an absorption refrigeration and pre-desalination system for marine engine exhaust gas heat recovery

Energetic Analysis of the Aircraft Diesel Engine

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