Academic Qualification

• Ph.D. in Mechanical Engineering (Thermal & Fluid Engg), Indian Institute of Technology (BHU),Varanasi
• M.Tech. in Mechanical Engineering, MNNIT, Allahabad

 
Professional Experience

• Associate Professor: Mechanical Engineering, IIT (BHU), Varanasi
• Lecturer: Mechanical Engineering, BIT Mesra, Ranchi,

 
Current Research Interests
Internal Combustion engine, Automobile Engineering, Combustion technology, Combustion generated pollutions, Thermodynamics, Exhaust gas recovery systems, Alternative fuels, Nanofluids and hybrid nanofluid,
 
Ph.D. Thesis Guidance: 5 (Ongoing)

1. Mr. Dhruv Karana  (17131011)
2. Mr. Chandrmani Yadav​  (17131009)
3. Mr. A. Singh (16131502)
4. Mr.Vikas Kumar (17131504)
5. Mr. Ranjeet Kumar Rai (17131503)

On Going M.Tech Projects (2018-2019)
1. Sagar Srivastava (M.Tech,2nd Year)
2.Ankur Tripathi (M.Tech, 2nd Year)
3.Sudhakar Shukla (M.Tech, 2nd Year)
4. Pulkit (IDD)
5. Rambabu (M.Tech, Part-I)
6.Ankit Rajput (M.Tech, Part-I)
7.Jitendra (M.Tech, Part-I)

• Principal-investigator of consultancy project ‘Feasibility study of co-firing in pulverized coal boiler with Agrofuels‘, Hindalco Industries Limited (Power division), 2013.(3 lakhs)
• Co-investigator of sprouting grant project ‘Facilities to measure liquid thermo-physical properties’, IIT (BHU) Varanasi, 2015.(20 lakhs)
• Faculty adviser of Baja team for Design and Fabrication of ATV (2015-2018)(3.5 lakhs)
• New technology application for low emissions from IC engines, Project Executive Summary (PES) under ,Apr.2018 (20 lakhs) (Under Process)
• Design and Develop of WHRS through TEG and PCM, DIC Project IIT (BHU) May, 2018 (5 Lakh).      
• Institute Project on "IR Camera"   co-investigator  (40 Lakh)
• Development of ORC technology for waste heat utilization for the generation of electricity, BRNS, co-investigator, 2019-2022, 30 lakhs.

1. Selected Journal Papers

• A Singh, J Sarkar, RR Sahoo, Experimentation and Performance Analysis of Solar-Assisted Heat Pump Dryer for Intermittent Drying of Food Chips,Journal of Solar Energy Engineering 144 (2), 2022.
   
• V Kumar, RR Sahoo, 4 E’s (Energy, Exergy, Economic, Environmental) performance analysis of air heat exchanger equipped with various twisted turbulator inserts utilizing ternary hybrid nanofluids,Alexandria Engineering Journa, 2022.

• C Yadav, RR Sahoo, Thermophysical properties and thermal performance evaluation of multiwalled carbon nanotube‐based organic phase change materials using T‐History method, International Journal of Energy Research, 2021.

• Rai R.K. Sahoo R.R. (2021) Engine performance, emission, and sustainability analysis with dieselfuel- basedShorearobustamethyl esterbiodiesel blends. Fuel.292(1): 120234.

• Karana D.R., Sahoo R.R. (2021) An experimental study on the thermal behavior of aluminum thermoelectric system integrated with engine exhaust. Experimental HeatTransfer 34(3):201-216.

• Yadav C.  Sahoo R.R. (2021) Thermal analysis comparison of nano-additive PCM-based enginewaste heat recovery thermal storage systems: an experimental study.Journal of Thermal Analysis and Calorimetry.

• Rai R.K., Sahoo R.R. (2021) Exergy, Energy and Sustainability-based investigation of diesel engine charged with Shorearobusta methyl ester biodiesel blends. Fuel. 

• Rai R.K., Sahoo R.R.(2020) EffectofCNTandAl2O3-CNThybridnano-additiveinwater-emulsified fuels on DICI engine energetic and exergetic performances. Journal of Thermal Analysis and Calorimetry

• Kumar V., Sahoo R.R. (2021) Experimental and Numerical study on cooling system waste heat recovery for engine air preheating by Ternary hybrid nanofluid. Journal of Enhanced Heat Transfer.28(4):1-29.

• Rai R.K., Sahoo R.R. (2021) Impact of different shape based hybrid nano additives in emulsion fuel for exergetic, energetic, and sustainability analysis of diesel engine. Energy 214(1): 119086.

• Karana D.R., Sahoo R.R. (2021) Performance assessment of the automotive heat exchanger with twisted tape for thermoelectric based waste heat recovery. Journal of Cleaner Production. 283(1)124631.

​

• SinghA.,SarkarJ., SahooR.R.(2021) Experimentation on solar-assisted heatpump dryer:Thermodynamic,economic and exergoeconomic assessments. SolarEnergy.208(1): 150-159.

• Karana D.R. Sahoo R.R. (2021) Heat Transfer and Pressure Drop Investigations of the CompactExhaust Heat Exchanger With Twisted Tape Inserts for Automotive Waste Heat Utilization. ASME Journal of Thermal Science and Engineering Applications. 13(041003):1-10.

• Sahoo R.R. and Kumar V. (2020) Impact of Novel Dissimilar Shape Ternary Composition-Based Hybrid Nanofluids on the Thermal Performance Analysis of Radiator. ASME Journal of Thermal Science and Engineering Applications 13(041002): 1-11.

​

• Rai R.K., Sahoo R.R. (2020) Experimental energetic and exergetic analysis with the novel emulsionfuels incorporating CNT and Al2O3 nano additive for DICI engine. International Journal of Exergy.34(4):492-514.

• Yadav C.  Sahoo R.R. (2021) Thermal performance analysis of MWCNT-based capric acid PCM thermal energy . Journal of Thermal Analysis and Calorimetry (In Press).

• Sahoo R.R. (2021) Heat transfer and second law characteristics of radiator with dissimilar shape nanoparticle-basedternaryhybridnanofluid.Journal of Thermal Analysis and Calorimetry

• RR Sahoo, Effect of various shape and nanoparticle concentration based ternary hybrid nanofluid coolant on the thermal performance for automotive radiator, Heat and Mass Transfer, 57(5):873-887. 2021.

• A. Singh, J. Sarkar, R. R. Sahoo, Experimental performance analysis of novel indirect-expansion solar-infrared assisted heat pump dryer for agricultural products, Solar Energy, 2020. 

• R. Rai, R. R. Sahoo, Taguchi-Grey method optimization of VCR engine performance and heat losses by using Shorea robusta biodiesel fuel, Fuel, Elsevier, June, 2020. (In press)

• D. R. Karana, R. R. Sahoo, Thermo-hydraulic performance of a new internal twisted ribs automobile exhaust heat exchanger for waste heat recovery applications, International Journal of Energy Research, June 25, 2020.

•  D. R. Karana, R. R. Sahoo, Thermal, environmental and economic analysis of a new thermoelectric cogeneration system coupled with a diesel electricity generator, Sustainable Energy Technologies and Assessments, Elsevier Ltd. vol. 40, 2020, 100742;pp.1-11.

• R. Rai, R. R. Sahoo, Effect of Shorea robusta methyl ester biodiesel blends on the exergy and sustainability analysis of diesel engine, Experimental Heat Transfer, 2020, https://doi.org/10.1080/08916152.2020.1776419.

• D. R. Karana, R. R. Sahoo, An experimental study on the thermal behavior of aluminum thermoelectric system integrated with engine exhaust, Experimental Heat Transfer. 2020, https://doi.org/10.1080/08916152.2020.1730525, pp. 1-16.

• A.Singh, J. Sarkar, R. R. Sahoo, Experiment on waste heat recovery assisted heat pump drying of food chips: Performance, economic and exergoeconomic analyses, Journal of Food Processing and Preservation, Wiley & Sons, 2020, 10.1111/jfpp.14699.

• R. R.Sahoo, Thermo-hydraulic characteristics of radiator with various shape nanoparticle-based ternary hybrid nanofluid, Powder Technology, 2020, Vol. 370, Pages 19-28.

• R. R. Sahoo, D.R. Karana, Effect of design shape factor on exergonic performance of a new modified extended-tapering segmented thermoelectric generator system, Energy, 2020, vol. 200, 117561, pp:1-15.

• C. Yadav, R. R.Sahoo, Effect of nano-enhanced PCM on the thermal performance of a designed cylindrical thermal energy storage system, Experimental Heat Transfer, 2020, https://doi.org/10.1080/08916152.2020.1751744.

• A.Singh, J. Sarkar, R. R. Sahoo, Experimental energy‐exergy performance and kinetics analyses of compact dual‐mode heat pump drying of food chips, Journal of Food Process Engineering, 2020, https://doi.org/10.1111/jfpe.13404.

• A.Singh, J. Sarkar, R. R. Sahoo, Experimental energy, exergy, economic and exergoeconomic  analyses of batch-type solar-assisted heat pump dryer, Renewable Energy, 2020, https://doi.org/10.1016/j.renene.2020.04.100.

• D. R. Karana, R. R. Sahoo, Experimental study on exergy and sustainability analysis of the thermoelectric based exhaust waste heat recovery system, International Journal of Exergy, 2020, IJEX-267287.

• Karana D.R. and Sahoo R.R. (2020) An experimental study on the thermal behavior of aluminum thermoelectric system integrated with engine exhaust, EXPERIMENTAL HEAT TRANSFER (Taylor & Francis) 2020/2/18,  https://doi.org/10.1080/08916152.2020.1730525.

• Yadav C. and Sahoo R.R. (2020) Experimental analysis for optimum thermal performance and thermophysical parameters of MWCNT based capric acid PCM by using T-history method, Powder Technology, vol.364, Feb 2020, pp. 392-403.

• Sahoo R. R. and Kumar V. (2020) Development of a new correlation to determine the viscosity of ternary hybrid nanofluid, International communication in Heat and Mass Transfer, vol.111, Feb.2020, 10445.

• Karana D.R. and Sahoo R.R. (2020) EFFECT OF DESIGN PARAMETERS ON THE PERFORMANCE OF A NEW MODIFIED ANNULAR TEG SYSTEM, International Journal of Energy for a Clean Environment, DOI: 10.1615/InterJ Ener Clean Env. 2020031182 pages 351-371.

• Kumar V. and Sahoo R. R. (2020) Exergy and energy performance for wavy fin radiator with a new coolant of various shape nanoparticle-based hybrid nanofluids, Journal of Thermal Analysis and Calorimetry, 3 Feb 2020, https://doi.org/10.1007/s10973-020-09361-z.

• Kumar V. and Sahoo R. R. (2019) Viscosity and thermal conductivity comparative study for hybrid nanofluid in binary base fluids, Heat transfer Asian research, June 2019,https://doi.org/10.1002/htj.21535.

• Singh A, Sarkar J, and Sahoo R.R. (2019) Comparative analyses on a batch-type heat pump dryer using low GWP refrigerants, Food and Bioproducts Processing, Sept. 2019, vol.117, pp.1-19.

• Yadav C. and Sahoo R.R. (2019) Exergy and energy comparison of organic phase change materials based thermal energy storage system integrated with engine exhaust, Journal of Energy Storage, Aug.2019, vol.24, 100773.

• Rai R. and Sahoo R.R. (2019) Effective power and effective power density analysis for water in diesel emulsion as fuel in diesel engine performance, Energy, Aug 2019, vol.180, pp.893-902.

• Karana D.R. and Sahoo R.R. (2019) Influence of geometric parameter on the performance of a new asymmetrical and segmented thermoelectric generator, Energy, July 2019, vol.179, pp. 90-99.

• Kumar V. and Sahoo R. R. (2019) Exergy and energy analysis of a wavy fin radiator with variously shaped nanofluids as coolants, Heat transfer Asian research, June 2019, https://doi.org/10.1002/htj.21478.

• Singh A, Sarkar J, and Sahoo R.R. (2019) Energetic and exergetic performance simulation of open-type heat pump dryer with next-generation refrigerants, Drying Technology, April 2019, https://doi.org/10.1080/07373937.2019.1610770.

• Rai R. and Sahoo R.R. (2019) Effective efficiency and power density analysis for WiDE as a fuel in diesel engine performance, Heat transfer Asian research, May 2019, https://doi.org/10.1002/htj.21423.

• Yadav C. and Sahoo R.R. (2019) Energetic and exergetic investigation on lauric and stearic acid  phase‐change material–based thermal energy storage system integrated with engine exhaust, Heat transfer Asian Research, Vol. 48(3),pp.1093-1108.

• Karana D.R. and Sahoo R.R. (2019) Performance effect on the TEG system for waste heat recovery in automobiles using ZnO and SiO2 nanofluid coolants, Heat transfer Asian Research, Vol. 48(1),pp.216-232.

• Sahoo R.R. and Jain A. (2019) Experimental analysis of nanofuel additives with magnetic fuel conditioning for diesel engine performance and emissions, Fuel, vol. 236, pp.365-372.

• Yadav C. and Sahoo R.R. (2019) Effect of thermal performance on melting and solidification of lauric acid PCM in cylindrical thermal energy storage, Journal of Physics(IOP Publisher), July 2019, vol.1240(1); Pages 012088.

•  M Prakash, A Sarkar, J Sarkar, JP Chakraborty, SS Mondal, RR Sahoo, Performance assessment of novel biomass gasification based CCHP systems integrated with syngas production, Energy, volume 167,379- 390. https://doi.org/10.1016/j.energy.2018.10.172.  

•  ​Dhruv Karana, R.R. Sahoo, Performance effect on TEG system for waste heat recovery in automobiles using ZnO and SiO2 nanofluid coolants, DOI: 10.1002/htj.21379,2018, in press.  

• RR Sahoo, P.Ghosh, J Sarkar, Energy and exergy comparisons of water based optimum brines as coolants for rectangular fin automotive radiator International Journal of Heat and Mass Transfer 2017,105, 690-696.

• R.R.Sahoo, J.Sarkar, Heat transfer performance characteristics of hybrid nanofluids as coolant in louvered fin automotive radiator ,Heat Mass Transfer , Springer-2016 53 (6), 1923-1931.

• RR Sahoo, P.Ghosh, J Sarkar, Performance comparison of various coolants for louvered fin tube automotive radiator,Thermal Science,2017, 21, 2871-2888.

B) Papers published/presented in Conferences:

R. R. Sahoo, PERFORMANCE ANALYSIS OF RADIATOR BY USING OPTIMUM PG BRINE BASED NANOFLUIDS AS COOLANT, 1st International 18 ISME Conference, February 2017.

U.SRIVASTAVA, RR Sahoo, Performance analysis of Graphite  foam heat exchanger using Nanofluids as coolant in automotive radiators,4thInternational Conference on Emerging Trends in Engineering and TechnologyCollege Of Engineering ,Teerthanker Mahaveer University [2015]

V.V.V.Singh, RR Sahoo, Theoretical Analysis Of Offset Crankshaft Engine, 4thInternational Conference on Emerging Trends in Engineering and TechnologyCollege Of Engineering ,Teerthanker Mahaveer University [2015]

Deepak, RR Sahoo, Performance analysis of automotive car radiator with carbon foam fin using nanofluids,3rd International Conference on Emerging Trends in Engineering & Technology, March14, 15, 2014,College of Engineering, Teerthanker Mahaveer University.

RR Sahoo, Coolants  Performance in automotive radiator INTERNATIONAL CONFERENCE On“Mechanical, Material, Industrial, Automotive, Aeronautical and Nano-Technology”(MIANT-2015).

J. Sarkar1 , R R Sahoo, Trade-off between Evaporator and gas cooler heat exchangers of a Transcritical CO2 based Heat Pumps National conference on RTME-2006 Sri Jayachamarajendra College of Engg, Mysore.

J.Sarkar, A.Lal, RR Sahoo, SUITABLE NATURAL REFRIGERANTS PAIRS FOR CASCADE REFRIGERATION SYSTEM BASED ON MINIMUM HEAT EXCHANGER SIZE Proceedings of the 23rd National Heat and Mass Transfer Conference and 1st International ISHMT-ASTFE Heat and Mass Transfer Conference IHMTC2015.

 Ranjeet Kumar Rai, Rashmi Rekha Sahoo, Optimization of Performance with Heat Transfer characteristics on VCR engine fuelled with Mahua Diesel blends using Grey-Taguchi MethodManuscript ID: IHMTC2019-POS-446, 25thNational and3rd International ISHMT-ASTFE Heat and Mass Transfer Conference(IHMTC-2019), 28-31 December 2019, IIT Roorkee, Roorkee, India.

Dhruv Raj Karana, Rashmi Rekha Sahoo, Performance Evaluation of Thermoelectric Generator with Nanofluid Coolants for Waste Heat Recovery, Manuscript ID: IHMTC2019-ENE-178, 25thNational and3rd International ISHMT-ASTFE Heat and Mass Transfer Conference(IHMTC-2019), 28-31 December 2019, IIT Roorkee, Roorkee, India.

Vikash Kumar, Rahmi Rekha Sahoo, Heat transfer augmentation under laminar flow conditions using nanofluid: A numerical syudy,Manuscript ID: IHMTC2019-POS-447 25thNational and3rd International ISHMT-ASTFE Heat and Mass Transfer Conference(IHMTC-2019), 28-31 December 2019, IIT Roorkee, Roorkee, India.

Akhilesh Singh, Jahar Sarkar, Rashmi Rekha Sahoo,1D transient simulation of batch type convective heat pump dryer for agricultural product and experimental validation, Manuscript ID: IHMTC2019-POS-114,25thNational and3rd International ISHMT-ASTFE Heat and Mass Transfer Conference(IHMTC-2019), 28-31 December 2019, IIT Roorkee, Roorkee, India

Key research achievements / highlights

• Smt. Sheela Bai National Award Winner, 2021 from Institute of Engineers.
• Listed in World's Top 2% Scientists 2021.
• Design and fabrication of wind tunnel based radiator set up for the performance evaluation with various nanofluid and hybrid nanofluid as coolants.2017.
• Investigated a new radiator coolant (optimum PG brine) which results the same performance of water as coolant at higher temperature.
• Investigated various new radiator coolants i.e sugarcane juice, citrus lamon for the evaluation of radiator performance experimentally.
• Investigated experimentally nanofuel application to diesel engine with magnetic fuel conditioning for the engine performance and emission evaluation.
• Investigated theoretically and experimentally radiator performance with hybrid nanofluid in engine cooling system.
• Investigated the engine performance with nanoadditive to biodiesel and hybrid biodiesel experimentally. 
• Design and fabrication of prototype Cooling system for conducting experiments for UG,PG and PhD students.

Invited Lecturer

• Lectures deliver on Faculty Development Programme November 6-11, 2017 Nanofluid and its Engineering Applications  

1. Application of nanofluid in Radiator as coolants
2. Engine Application as nanofuel

•  Reviewed more than 33 manuscripts of various reputed International journals (biofuels, fuel, Applied thermal engineering.,etc)
• Member of various selection committees in the Institute, DUGC member in Mechanical Engg.Deptt. Examiner of various committees. 
• Admn.Warden IT Girls Hostel. (2006-2009).
• Internal Combustion Lab. In-charge (2009-2017).
• Dean's Nominee for Project Purchase committee and Selection committee (2018).