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In the present study, the aim is to experimentally measure the isobaric specific heat, viscosity and thermal conductivity of different magnesium oxide (MgO) nanoparticles concentrations dispersed in ethylene glycol/ water mixture with ratio 50:50 vol% as a base fluid. The experiments were performed on 20 nm particle size of MgO nanoparticles suspended in base fluid with different volume fractions from 0.25 to 1% and temperature range from 40 to 120°C. The data results detected that the specific heat capacity of nanofluids reduces as the nanoparticles volume fraction increases but increases as the temperature rises. For all volume concentrations, the dynamic viscosity declines non-linearly with rising temperature. The increase in viscosity related to the base fluid is slightly recognized at low nanoparticles concentrations, while this change is more sensible at higher volume concentrations. Generally, MgO nanofluids showing higher viscosities than the base fluid used. The thermal conductivity of examined nanofluids increases uniformly with increasing the nanofluid sample temperature and nanoparticles volume concentration.

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Illis paper presents a comprehensive analysis of the effect of a pulse combustion system on the performance of a gas turbine cycle. The advantages of pulse combustors are numerous. The hcat transfer is cnhanced by the large oscillations resulting in the Ilo~vficld \vithin the combustion zone. These oscillations arise from intrinsic combustion driven instabilities, similar to those that occur in rocket motors. The enhanced heat transfer means that a srnallcr combustion chamber (furnace) can be used to providc thc same energy output. Moreover, a reduction in the No, level in the exhaust gases can be obtained without additional pollution control. It is well known that the gas turbine requires constant pressure combustion process. The efficiency of gas turbine increases w

In the present work, the laminar burning velocity for different blends of jojoba biogasoline with basic gasoline was measured. For this purpose, a constant volume vessel using transient Pressure technique was designed and manufactured with special criteria on safety and accuracy of the experimental results. The results were obtained for a range of equivalence ratios 0.8-1.3, initial mixture temperatures varying from 350 K to 450 K and initial mixture pressures from 0.5 to 1 bar (absolute). The reliability and accuracy of the test facility were confirmed by comparing the acquired burning velocity data for iso-octane with those available in the literature. The laminar burning velocity of different blends was compared to iso-octane and commercial gasolines at the same research octane number. It was found that blends of jojoba bio-gasoline with basic gasoline exhibit lower burning velocities than commercial gasolines and iso-octane fuel, primarily due to its high aromatic content.