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Papers by Rakesh Bumataria

Research paper thumbnail of Heat load and orientation impacts in cylindrical heat pipes using copper oxide, aluminium oxide, and zinc oxide nanofluids

International Journal of Ambient Energy

Research paper thumbnail of Performance evaluation of the cylindrical shaped heat pipe utilizing water-based CuO and ZnO hybrid nanofluids

Energy Sources Part A-recovery Utilization and Environmental Effects, 2020

The influence of the heat pipe orientation and the working fluid type of the screen mesh wick hea... more The influence of the heat pipe orientation and the working fluid type of the screen mesh wick heat pipe was investigated experimentally. A hybrid nanofluid using three proposals for composite nanop...

Research paper thumbnail of Experimental investigation on single cylinder 4-stroke diesel engine using nanofluids as a coolant to compact the system

Recent power sectors associated with an internal combustion engine had a crucial challenge to red... more Recent power sectors associated with an internal combustion engine had a crucial challenge to reduce the size and weight of the thermal management system of internal combustion engines. This work aims to reduce the size and weight of the internal combustion engine cooling system by utilizing particular types of working medium as a coolant in place of traditional ones. In this study, the effects of water base CuO nano-coolant on cooling performance, fuel consumption, brake thermal efficiency, etc. of single-cylinder water-cooled diesel engines have been investigated. The two-step method was used to prepare five different weight concentrations (i.e. 0.5%, 0.75%, 1.0%, 1.25% & 1.5%) of water-based CuO nano-coolants. The purpose of this study is to examine the heat loss in cooling media and effects of heat loss in cooling media on engine performance under different load conditions with water based CuO nanofluid. The increment of fuel consumption, decrement of brake thermal efficiency, a...

Research paper thumbnail of Review of Stirling Engines for Pumping Water using Solar Energy as a source of Power

In order to satisfy the rising energy demands of global consumption a new ecofriendly renewable p... more In order to satisfy the rising energy demands of global consumption a new ecofriendly renewable power source needs to be explored, conceptualized and developed. Solar energy is a free and clean energy resource which is available to humans or the local culture in abundant. An attempt is made to study Stirling cycle, its application and its suitability to use this source as pumping water in rural sector. Review of study is done for the development of Solar Stirling engine which will help in development of the engine which can be used for pumping water at rural areas using solar energy as a source. The engine developed will have its wide application not only in rural sector but also for generating electricity by attaching a generator of required capacity to the shaft of an engine.

Research paper thumbnail of An Experimental Study on the Performance and Emission Characteristics of Single Cylinder Compressed Ignition Engine Using Mahua Biodiesel with Additives

International journal of scientific research in science, engineering and technology, 2015

In the present research, an experiment is designed and conducted to investigate the effect of Mah... more In the present research, an experiment is designed and conducted to investigate the effect of Mahua biodiesel i.e. Mahua biodiesel originating from non edible Mahua diesel fuel on the combustion performance and emission characteristics of a direct injection C.I. engine under varying engine loads (0–100%) and constant engine speed (1500 rpm). Three types of blend are tested, which consist of different blends like (B20,B40 and B100) with constant 1% of additives and labeled as B20X1,B20X2 and B20X3,B40X1,X2,X3 respectively. It is also noticed that brake thermal efficiency increases with the percentage of additive in all the test fuels. The brake specific fuel consumption decreases with increase in additive percentage. Exhaust gas temperature increases almost linearly with load for all test fuels and decreases with increase in additive percentage. It is also seen from the results that both CO and HC emissions tend to decrease with increase in additive percentage in biodiesel. Fuel addi...

Research paper thumbnail of Stirling Engine Performance Prediction Using Schmidt Analysis by Considering Different Losses

International Journal of Research in Engineering and Technology, 2013

A low temperature ratio Stirling engine analysis required for cost effective, less environment ha... more A low temperature ratio Stirling engine analysis required for cost effective, less environment harmfulness and more efficient power generation compare to Rankine cycle and Brayton cycle for this temperature ratio. A new and complete model for a Stirling engine has been established. This computerized model predicts the behavior of existing engines reasonably accurately for cases where a quantitative comparison is available. In order to obtain a closed solution suitable for design optimization a simplified model for a Stirling engine has been derived considering different types of losses in this engine. This new model has sufficient accuracy for prediction of the behavior a real engine and its results are quite close to the complete model predictions.

Research paper thumbnail of Current research aspects in mono and hybrid nanofluid based heat pipe technologies

Heliyon, May 23, 2019

Technological development has leads to need of more compact thermal management system especially ... more Technological development has leads to need of more compact thermal management system especially in electronic cooling systems. Heat pipe with the use of mono and hybrid nanofluids are recent trends to satisfy the need of enhanced heat transfer and miniaturization in size. In this article, a state-of-the-art review on different types of heat pipe s, nanofluids preparation and characterization techniques have been carried out. The study begins with an overview of heat pipe and discussed about heat pipe with sintered, grooved and mesh wick structures, applications, mono nanofluids and hybrid nanofluids. The research works carried out for last decade are analyzed in terms of types of heat pipe, working medium, nanofluids preparation and characterization techniques. Effect of operating variables like nanoparticle size, shape and concentration, filling ratio, inclination angle and heat load are also presented. In last, the possible future research thrusts are presented.

Research paper thumbnail of Heat load and orientation impacts in cylindrical heat pipes using copper oxide, aluminium oxide, and zinc oxide nanofluids

International Journal of Ambient Energy

Research paper thumbnail of Performance evaluation of the cylindrical shaped heat pipe utilizing water-based CuO and ZnO hybrid nanofluids

Energy Sources Part A-recovery Utilization and Environmental Effects, 2020

The influence of the heat pipe orientation and the working fluid type of the screen mesh wick hea... more The influence of the heat pipe orientation and the working fluid type of the screen mesh wick heat pipe was investigated experimentally. A hybrid nanofluid using three proposals for composite nanop...

Research paper thumbnail of Experimental investigation on single cylinder 4-stroke diesel engine using nanofluids as a coolant to compact the system

Recent power sectors associated with an internal combustion engine had a crucial challenge to red... more Recent power sectors associated with an internal combustion engine had a crucial challenge to reduce the size and weight of the thermal management system of internal combustion engines. This work aims to reduce the size and weight of the internal combustion engine cooling system by utilizing particular types of working medium as a coolant in place of traditional ones. In this study, the effects of water base CuO nano-coolant on cooling performance, fuel consumption, brake thermal efficiency, etc. of single-cylinder water-cooled diesel engines have been investigated. The two-step method was used to prepare five different weight concentrations (i.e. 0.5%, 0.75%, 1.0%, 1.25% & 1.5%) of water-based CuO nano-coolants. The purpose of this study is to examine the heat loss in cooling media and effects of heat loss in cooling media on engine performance under different load conditions with water based CuO nanofluid. The increment of fuel consumption, decrement of brake thermal efficiency, a...

Research paper thumbnail of Review of Stirling Engines for Pumping Water using Solar Energy as a source of Power

In order to satisfy the rising energy demands of global consumption a new ecofriendly renewable p... more In order to satisfy the rising energy demands of global consumption a new ecofriendly renewable power source needs to be explored, conceptualized and developed. Solar energy is a free and clean energy resource which is available to humans or the local culture in abundant. An attempt is made to study Stirling cycle, its application and its suitability to use this source as pumping water in rural sector. Review of study is done for the development of Solar Stirling engine which will help in development of the engine which can be used for pumping water at rural areas using solar energy as a source. The engine developed will have its wide application not only in rural sector but also for generating electricity by attaching a generator of required capacity to the shaft of an engine.

Research paper thumbnail of An Experimental Study on the Performance and Emission Characteristics of Single Cylinder Compressed Ignition Engine Using Mahua Biodiesel with Additives

International journal of scientific research in science, engineering and technology, 2015

In the present research, an experiment is designed and conducted to investigate the effect of Mah... more In the present research, an experiment is designed and conducted to investigate the effect of Mahua biodiesel i.e. Mahua biodiesel originating from non edible Mahua diesel fuel on the combustion performance and emission characteristics of a direct injection C.I. engine under varying engine loads (0–100%) and constant engine speed (1500 rpm). Three types of blend are tested, which consist of different blends like (B20,B40 and B100) with constant 1% of additives and labeled as B20X1,B20X2 and B20X3,B40X1,X2,X3 respectively. It is also noticed that brake thermal efficiency increases with the percentage of additive in all the test fuels. The brake specific fuel consumption decreases with increase in additive percentage. Exhaust gas temperature increases almost linearly with load for all test fuels and decreases with increase in additive percentage. It is also seen from the results that both CO and HC emissions tend to decrease with increase in additive percentage in biodiesel. Fuel addi...

Research paper thumbnail of Stirling Engine Performance Prediction Using Schmidt Analysis by Considering Different Losses

International Journal of Research in Engineering and Technology, 2013

A low temperature ratio Stirling engine analysis required for cost effective, less environment ha... more A low temperature ratio Stirling engine analysis required for cost effective, less environment harmfulness and more efficient power generation compare to Rankine cycle and Brayton cycle for this temperature ratio. A new and complete model for a Stirling engine has been established. This computerized model predicts the behavior of existing engines reasonably accurately for cases where a quantitative comparison is available. In order to obtain a closed solution suitable for design optimization a simplified model for a Stirling engine has been derived considering different types of losses in this engine. This new model has sufficient accuracy for prediction of the behavior a real engine and its results are quite close to the complete model predictions.

Research paper thumbnail of Current research aspects in mono and hybrid nanofluid based heat pipe technologies

Heliyon, May 23, 2019

Technological development has leads to need of more compact thermal management system especially ... more Technological development has leads to need of more compact thermal management system especially in electronic cooling systems. Heat pipe with the use of mono and hybrid nanofluids are recent trends to satisfy the need of enhanced heat transfer and miniaturization in size. In this article, a state-of-the-art review on different types of heat pipe s, nanofluids preparation and characterization techniques have been carried out. The study begins with an overview of heat pipe and discussed about heat pipe with sintered, grooved and mesh wick structures, applications, mono nanofluids and hybrid nanofluids. The research works carried out for last decade are analyzed in terms of types of heat pipe, working medium, nanofluids preparation and characterization techniques. Effect of operating variables like nanoparticle size, shape and concentration, filling ratio, inclination angle and heat load are also presented. In last, the possible future research thrusts are presented.