Venkateswara Rao Parimi | KAKATIYA INSTITUTE OF TECHNOLGY AND SCIENCE (original) (raw)

Papers by Venkateswara Rao Parimi

International Journal of Material Science Innovations, 2013

Density and acid value properties are to be mainly considered to use biodiesel as fuel in interna... more Density and acid value properties are to be mainly considered to use biodiesel as fuel in internal combustion engines. In the present work these properties were compared for biodiesels (POME, MOME and COME) and their blends with 2-Propanone as additive at different percentages. The variation in properties was observed by adding 2-Propanone to biodiesels at 5%, 15%, 25%, and 35% to prepare blends. The property values obtained for biodiesels and their blends with 2-Propanone were decreasing and are comparable with diesel fuel. At 35% of 2-Propanone as additive in the blend fuels are with lower density and acid value less than diesel fuel. Additive in the biodiesels improve the properties of blend fuel which enhance ability to vaporize completely that leads proper combustion and increases the engine output. Copyright©2017, Patil and Jadhav. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

A b s t r a c t Methyl ester of pongamia pinnata oil (PPME) was prepared and blended with diesel ... more A b s t r a c t Methyl ester of pongamia pinnata oil (PPME) was prepared and blended with diesel in different compositions from B0% to B100% in steps of 20%. Tests were conducted on a single cylinder diesel engine at maximum load of 12 Kg, constant speed of 1500 rpm, CR 18, and at varying injection pressures of 150, 200 and 250bar. Brake thermal efficiency and specific fuel consumption increases as the injection pressure increase. Among all the tests, B20 blend fuel has higher Brake thermal efficiency of 31.3% in comparison 32.7% for diesel, but marginally at higher specific fuel consumption than diesel. The biodiesel blend has maximum nitric oxide emission of 195ppm, while it was 182ppm for diesel. Substantial reduction was observed in Carbon monoxide, Carbon dioxide, HC emissions and smoke density in the full range of load and at higher injection pressure. The results reveal that the biodiesels can be used safely to replace diesel, as alternative and renewable fuel without any modifications to the engine.

Biodiesel is emerging as a promising substitute of an alternative fuel and has gained significant... more Biodiesel is emerging as a promising substitute of an alternative fuel and has gained significant attention due to the predicted depletion of conventional fuels availability in near future and environmental pollution concern. Utilization of biodiesel produced from Jatropha oil by transesterification process is one of the most promising options to replace conventional fossil diesel fuel. The physical properties such as density, Kinematic viscosity, flash point, carbon residue, Pour point and Cetane number were found out for diesel, Jatropha oil and Jatropha Oil Methyl Ester (JOME) produced in the laboratory. Properties obtained for the Jatropha oil methyl ester are very closely matched with the values of conventional diesel fuel and can be used without any modification in the existing diesel engine.

International Journal of Scientific Engineering and Technology, 2018

Biodiesels are being utilized as renewable, alternative energy resource of fuels and also the bes... more Biodiesels are being utilized as renewable, alternative energy resource of fuels and also the best substitute for continuously depleting mineral diesel as they have similar characteristics of combustion. The use of pure biodiesel as a fuel for diesel engines is presently limited due to problems relating to biodiesel fuel properties. By the addition of additive to biodiesel fuel properties can be improved to the acceptable range. In the present work, the test fuel was prepared with B50 blend fuel (50% palm oil methyl ester + 50% diesel) and ethanol additive at different percentages (0, 4, 8, 12, 16 and 20%) and investigated for their properties. The results revealed that by increasing the quantity of additive in B50 improves in density, viscosity, pour point and cloud point and with slight decrease in energy content. For the test fuel viscosity and density are decreases by 41%, 2.73%, respectively with 20% ethanol in blend fuel. The flash and fire points are 51ºC and 54ºC slightly lower than the flash and fire points of the conventional diesel and 18.3% of energy content decreases as compared to the blend fuel. All the test fuels (B50 blend fuel with ethanol additive) samples meet the requirements of ASTM D6751 biodiesel.

International Journal of Advanced Research, 2016

Triacetin [C 9 H 14 O 6 ]is the anti-knocking additive used along with the bio-diesel in DI-diese... more Triacetin [C 9 H 14 O 6 ]is the anti-knocking additive used along with the bio-diesel in DI-diesel engine. Knocking to some extent can be detected with the usage of diesel fuel and neat bio-diesel. The usage of T-additive suppressed knocking, improved the performance and reduced tail pipe emissions. Comparative study is conducted using petro-diesel, bio-diesel, and with various additive blends of bio-diesel on DI-diesel engine. Coconut oil methyl ester (COME) is used with additive triacetin (T) at various percentages by volume for all loads (No load, 25%, 50%, 75% and full load). The performance of engine is compared with neat diesel in respect of engine efficiency, exhaust emissions and combustion knock. Of the five Triacetin-biodiesel blends tried, 10% Triacetin combination with biodiesel proved encouraging in all respects of performance of the engine.

International Research Journal of Biological Sciences, 2017

The exploitation of the natural habitats, uncontrolled introduction of allied exotic fishes and p... more The exploitation of the natural habitats, uncontrolled introduction of allied exotic fishes and pathogenic infections has brought down the condition of Asian catfish, Clarias batrachus to quite a deplorable state. Currently, a worldwide effort is on the run to cultivate the endangered species in both natural and semi- intensive manner. An extensive study was performed to evaluate the synergistic effect of physico- chemical parameters, planktonic diversity and bacterial flora of C. batrachus cultivation on its productivity. The values of the physicochemical parameters were between 18 to 25ºC for temperature, 6.5 to 7.7 for pH, 3.1 to 4.8 mg/L for dissolved oxygen, 21 to 27 mg/L alkalinity, 70 to 128 mg/L for salinity, 78 to 128 mg/L for total hardness and 176 to 260 mg/L for total dissolved solids. The amount of total ammonia, nitrate and nitrite of the treated pond were 0.02 to 0.06 ppm, 0.1 to 0.4 ppm and 0.1 to 0.5 ppm respectively. Five predominant groups of zooplanktons and five classes of phytoplanktons were identified the study. The viable bacterial counts of pond water and sediment mud were found in low range during winter in comparison to summer season. The bacterial flora consisted mainly of gram negative rods.

— The properties like viscosity and acid value are to be mainly considered to use biodiesel as fu... more — The properties like viscosity and acid value are to be mainly considered to use biodiesel as fuel in internal combustion engines. In the present work these properties were compared for two biodiesels (POME and COME) and their blends with acetone at different percentages. The variation in properties were observed by adding acetone at 5%, 15%, 25%, and 35% to biodiesels and also at 35°C, 40°C, 45°C, 50°C, 55°C temperature. The property values obtained for biodiesels and their blends with acetone by increasing the temperature were decreasing and are compared with diesel fuel. At 55°C temperature both the blend fuels are with very less viscosity and acid value than diesel fuel to use in I C engine. Acetone in the blend fuel improves the ability to vaporize completely which increases the output of engine. INTRODUCTION The rate of increase in energy usage and fast depletion of available sources promotes to search for alternative sources of energy. Biodiesel can be used as fuel and obtained from oils or animal fats by conversion of triglycerides to esters by transesterification process. This source of energy is renewable and alternative to diesel fuel. It has properties similar to fossil diesel fuel which can be substituted for diesel with little or no engine modification [1-3]. Biodiesel has become more attractive recently because of its environmental benefits and available from renewable resources. The raw materials being exploited commercially for the biodiesel are edible/nonedible fatty oils derived from rapeseed, soybean, sunflower, palm, coconut, peanut, jatropha, neem, pongamia etc. [4, 5]. Injection of higher viscous fuel results in larger drop-lets, which causes in poor atomization and improper combustion in the engine cylinder. By increasing injection pressure or by decreasing viscosity smaller fuel droplets will be injected those results in better atomization and increase in work output [6]. Experimental investigation has been carried out to find out the different properties of jatropha oil. Theoretical equation has been developed for the properties of biodiesel and they have been compared with the experimental values [7, 8]. Model for the viscosity of biodiesel was investigated to obtain correlation between viscosities of different biodiesels [9]. The variation of fuel properties were investigated experimentally for biodiesels and its blends at various temperatures [10]. Hence an effort is made to investigate the properties of two biodiesels (POME and COME) and their blends with acetone at different temperatures and compared with the result of diesel fuel. II. MATERIALS AND METHODS Transesterification process is used to make biodiesel from palm oil. Filtered oil is heated at 105 0 C temperature to remove all the water content from the oil. Methanol of 99% pure, 120 ml per liter of oil is added and stirred for ten minutes. Two milliliter of 98% pure sulfuric acid is added for each liter of oil, heated and stirred for one hour at 60 0 C in a closed conical beaker to take reaction in the acid treatment. The mixture is allowed to settle for four hours and the separated glycerin is removed from methyl ester. Methanol of 200ml (20% by volume) with 6.5 grams of 98% pure NaOH (Sodium Hydroxide) is thoroughly mixed until it forms a clear solution called " Sodium Methoxide ". This solution is added to oil at 60 0 C temperature by stirring at 500 to 600 rpm in a closed container. The

Utilization of Natural fibers has received more attention all over the world from researchers. Th... more Utilization of Natural fibers has received more attention all over the world from researchers. These natural fibers offer number of advantages over traditional synthetic fibers such as glass in plastics due to their low cost, low density, acceptable specific strength, good thermal insulation properties, reduced tool wear and renewable resource. The concept of hybridization gives flexibility to the design engineer to enhance mechanical properties of composites as per requirements is the major advantage. In the present work, Kenaf and Hibiscus cannabinus fibers were used as the reinforcing material, since they are abundant in nature and have minimal effect on the environment because of their biodegradable properties. The short hybrid laminas are prepared by 4mm and 8mm length of Treated and Untreated fibers with general purpose iso-opthalic resin as matrix phase. The flexural strength (FS) flexural modulus (FM) and Water Absorption (WA) of the laminas are determined by using as per ASTM test methods. The results shows that treated fibers have higher flexural strength and flexural modulus and short fibers of 4mm length are even more superior to longer composite laminas.

Triacetin [C 9 H 14 O 6 ] is the anti-knocking additive used along with the bio-diesel in DI-dies... more Triacetin [C 9 H 14 O 6 ] is the anti-knocking additive used along with the bio-diesel in DI-diesel engine. Knocking to some extent can be detected with the usage of diesel fuel and neat bio-diesel. The usage of T-additive suppressed knocking, improved the performance and reduced tail pipe emissions. Comparative study is conducted using petro-diesel, bio-diesel, and with various additive blends of bio-diesel on DI-diesel engine. Coconut oil methyl ester (COME) is used with additive triacetin (T) at various percentages by volume for all loads (No load, 25%, 50%, 75% and full load). The performance of engine is compared with neat diesel in respect of engine efficiency, exhaust emissions and combustion knock. Of the five Triacetin-biodiesel blends tried, 10% Triacetin combination with biodiesel proved encouraging in all respects of performance of the engine.

The Triacetin [C 9 H 14 O 6 ] additive is used an anti-knocking agent along with the bio-diesel i... more The Triacetin [C 9 H 14 O 6 ] additive is used an anti-knocking agent along with the bio-diesel in DI-diesel engine. In the usage of diesel fuel and neat bio-diesel knocking can be detected to some extent. The T-additive usage in the engine suppressed knocking, improved the performance and reduced tail pipe emissions. Comparative study is conducted using petro-diesel, bio-diesel, and with various additive blends of bio-diesel on DI-diesel engine. Coconut oil methyl ester (COME) is used with additive Triacetin (T) at various percentages by volume for all loads (No load, 25%, 50%, 75% and full load). The performance of engine is compared with neat diesel in respect of engine efficiency, exhaust emissions and combustion knock. Of the five Triacetin-biodiesel blends tried, 10% Triacetin combination with biodiesel proved encouraging in all respects of performance of the engine.

To overcome the future source of fuel. Many vegetable oils have been studied with C I engine by m... more To overcome the future source of fuel. Many vegetable oils have been studied with C I engine by modification of oil (Biodiesel) in case of density/viscosity. The blend fuels of diesel with Karanja oil me (KME From the results, performance parameters were found to be very close to that of diesel fuel. The brake thermal efficiency and brake specific fuel consu blending ratios under certain loads. The emission characteristic levels of carbon dioxide, carbon monoxide, nitric oxide and hydrocarbons were found to be higher than pure diesel fuel. Copyright©2017, Venkateswara Rao. This is an open access article distributed under the Creative Commons Att distribution, and reproduction in any medium, provided the original work is properly cited.

The present work is to study the performance and emission characteristics of single cylinder, dir... more The present work is to study the performance and emission characteristics of single cylinder, direct injection diesel engine using coconut oil methyl ester (COME) and their blends with diesel in varying proportions. Experiments were conducted when the engine fueled with pure diesel, pure COME and the blends of diesel and COME by volume for full load range. The exhaust conditions were measured using exhaust gas analyzer similarly AVL smoke meter for measuring smoke density. Results were compared graphically in performance of the engine for specific fuel consumption, brake thermal efficiency, exhaust temperatures and in exhaust gases for concentrations of NO x and smoke density.

– In the present work biodiesel derived from non edible oil with diesel was used to study the per... more – In the present work biodiesel derived from non edible oil with diesel was used to study the performance of DI Diesel engine at 200 bar injection pressure and 1500rpm. Experiments were carried out with pogamia pinnata oil methyl ester (POME) and diesel blends in different proportions to reduce tail pipe emissions. Comparative study is conducted using diesel, bio-diesel and with various blends of biodiesel. POME is used (diesel, 20, 40, 60, 80, 100) with various percentages by volume for all loads (0, 3, 6, 9 and 12kg load). The performance of the engine is compared with neat diesel in respect of brake thermal efficiency, BSFC and exhaust emissions.

International Journal of Material Science Innovations, 2013

International Journal of Scientific Engineering and Technology, 2018

International Journal of Advanced Research, 2016

International Research Journal of Biological Sciences, 2017