National Institute of Technology, Meghalaya

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Dr. Rajat Subhra Das Assistant Professor; Emp. ID: 1150066

Ph.D, IIT Delhi

rajatsubhra@nitm.ac.in raj.mech27@gmail.com
9402102380

Research Interest

Solar Thermal Cooling, Refrigeration and Air-Conditioning Systems, Renewable Energy, Heat and Mass Exchangers

Education Qualification

Ph.D, IIT Delhi

Publications

International Journals:

Sl. No	Authors Name	Title of the paper	Name of Journal/	Page No., Vol. No. Year and date, DOI	Citation
1.	S Das, BK Debnath, RS Das	Experimental investigation of porous media combustion applied on the piston bowl of diesel engine	Journal of the Brazilian Society of Mechanical Sciences and Engineering	1-14, 43(3), 2021, https://doi.org/10.1007/s40430-021-02865-1	0
2.	PJ Bezbaruah, RS Das, BK Sarkar	Overall performance analysis and GRA optimization of solar air heater with truncated half conical vortex generators	Solar Energy	637-652, 196, 2020, https://doi.org/10.1016/j.solener.2019.12.057	3
3.	PJ Bezbaruah, RS Das, BK Sarkar	Solar air heater with finned absorber plate and helical flow path: A CFD analysis	Applied Solar Energy	35-41, 56(1), 2020, https://doi.org/10.3103/S0003701X20010041	2
4.	S Das, BK Debnath, RS Das, A Stagni, T Faravelli	Numerical investigation of a porous media combustor in a small-scale diesel engine	Energy	1-15, 186, 2019, https://doi.org/10.1016/j.energy.2019.07.115	6
5.	PJ Bezbaruah, RS Das, BK Sarkar	Thermal and Fluid Flow Analysis of Miller Teeth Shaped Ribbed Solar Air Heater-A CFD Approach	Journal of Scientific & Industrial Research	694-698, 78, 2019, http://nopr.niscair.res.in/handle/123456789/50651	1
6.	PJ Bezbaruah, RS Das, BK Sarkar	Thermo-hydraulic performance augmentation of solar air duct using modified forms of conical vortex generators	Heat and Mass Transfer	1387–1403, 55, 2019, https://doi.org/10.1007/s00231-018-2521-1	12
7.	R.S. Das, S. Jain	Experimental investigations on a solar assisted liquid desiccant cooling system with indirect contact dehumidifier	Solar Energy	289-300, 153, 2017, https://doi.org/10.1016/j.solener.2017.05.071	35
8.	R.S. Das, S. Jain	Performance characteristics of cross-flow membrane contactors for liquid desiccant systems	Applied Energy	1-11, 141, 2015, https://doi.org/10.1016/j.apenergy.2014.12.014	62
9.	R.S. Das, S. Jain	Simulation of potential standalone liquid desiccant cooling cycles	Energy	652-661, 81, 2015, https://doi.org/10.1016/j.energy.2015.01.009	20
10.	R.S. Das, S. Jain	Experimental performance of indirect air–liquid membrane contactors for liquid desiccant cooling systems	Energy	319-325, 57, 2013, https://doi.org/10.1016/j.energy.2013.05.013	40
11.	S. Jain, S. Tripathi, R.S. Das	Experimental performance of a liquid desiccant dehumidification system under tropical climates	Energy Conversion and Management	2461-2466, 52, 2011, https://doi.org/10.1016/j.enconman.2010.12.052	130

International Conferences:

Sl. No	Authors Name	Title of the paper	Name of Conference	Date and Year, Place, DOI No. (if any)
1.	P.J.Bezbaruah, R.Kumar, R.S. Das	Thermohydraulic performance analysis of solar air heater with helical roughness	25^th National and 3^rd International ISHMT-ASTFE Heat and Mass Transfer conference (IHMTC-2019)	pp. 233-237, 2019, 10.1615/IHMTC-2019.400
2.	S. Das, B. K. Debnath, R. S. Das,	Effect on combustion behaviour in the presence of ceramic porous materials on the piston bowl of a diesel engine	25^th National and 3^rd International ISHMT-ASTFE Heat and Mass Transfer conference (IHMTC-2019)	pp. 157-162, 2019, 10.1615/IHMTC-2019.270
3.	A. Das, R.S. Das, K. Das	Investigation on Fluid Flow, Heat and Mass transfer Characteristics in a LiCl-H₂O Falling Film Absorber	25th National and 3rd International Heat and Mass Transfer Conference (IHMTC-2019)	pp. 1001-1006, 2019 10.1615/IHMTC-2019.1680
4.	P.J. Bezbaruah, A. K. Gupta, R.S. Das, B.K. Sarkar	CFD analysis of solar collector with truncated hemispherical vortex generators	14^th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT 2019)	pp. 265-270. Paper ID: 348, July 21-24, 2019, Wicklow, Ireland.
5.	A. Das, R.S. Das, K. Das	Performance evaluation and enhancement of LiCl-H2O based falling film dehumidifier using surface modification	International Mechanical Engineering Congress (IMEC2019)	Paper ID 199, NIT Tiruchirappalli
6.	P.J. Bezbaruah, R.S. Das, B.K. Sarkar	Numerical analysis of solar triangular air duct with conical turbulators	2nd International Conference on Power, Energy and Environment: Towards Smart Technology (ICEPE)	Shillong, India, 2018, 10.1109/EPETSG.2018.8659188
7.	A.K. Gupta, P.J. Bezbaruah, R.S. Das, B.K. Sarkar	Numerical investigations on solar air heater with hemispherical vortex generator	2nd International Conference on Power, Energy and Environment: Towards Smart Technology (ICEPE)	Shillong, India, 2018, 10.1109/EPETSG.2018.8658873
8.	P. Kumar, A. Parveen, R.S. Das	Coupled Heat and Mass Transport in an Indirect Membrane Contactor with wicking material for Liquid Desiccant Dehumidification	International Heat and Mass Transfer Conference (IHMTC-2017),	Paper No. IHMTC2017-05-0607, December 27-10, 2017, BITS Pilani, Hyderabad
9.	A.K.S. Kushwaha, R.S. Das	A simplified ANN model to assess the performance of a liquid desiccant air-conditioning system	International Conference on Renewable and Sustainable Energy	12-13 April, Place -Coimbatore, 2017
10.	V. Gaba, V. Agrawal, R.S. Das, S. Jain	Development of solar driven liquid desiccant cooling system	National conference on Advances in Refrigeration and Air-Conditioning (NCARAC-2014)	January 27-28, 2014, Bhopal India.
11.	R.S. Das, P.K. Saha, S. Jain	Investigations on solar energy driven liquid desiccant cooling systems for tropical climates	50th Annual Australian Solar Energy Society (AuSES) Solar 2012 Conference	December, 6-7, 2012, Melbourne, Australia.
12.	R.S. Das, S. Jain	Performance of a solar liquid desiccant cooling system with indirect contact dehumidifier	National conference on refrigeration and air-conditioning	Dec, 12-14, 2013, IIT Chennai, India
13.	R.S. Das, S. Jain	Solar desiccant cooling technologies: Prospects and challenges	National conference on refrigeration and air-conditioning	July, 7-9, 2011, IIT Chennai, India.
14.	R.S. Das, S. Tripathi, S. Jain	Experimental performance of a liquid desiccant dehumidification system using an indirect contact heat and mass exchanger	Proc. of 5^th International sorption heat pump conference	April, 6-8, 2011, Padua, Italy; pp. 725-732

Book Chapters:

Sl.No	Authors Name	Title of the Chapter	Title of the book	Publisher	DOI
1.	P.J. Bezbaruah, A. Das, R.S. Das, B.K. Sarkar	Numerical investigation on triangular fin based solar air heater	Advances in Energy Research	Springer	http://doi.org/10.1007/978-981-15-2662-6_31
2.	P.J. Bezbaruah, R.S. Das, B.K.Sarkar	CFD-based study on thermal and fluid flow dynamics due to miller teeth shaped ribs over absorber plate of solar air collector	Advances in Mechanical Engineering	Springer	· http://doi.org/10.1007/978-981-15-0124-1_93
3.	H Barman, RS Das	Simultaneous Heat and Mass Transfer Analysis in Falling Film Absorber	Advances in Mechanical Engineering	Springer	https://doi.org/10.1007/978-981-15-0124-1_89

Courses Taught

Previous/Other Semester/Year

    Heat and Mass Transfer, Autumn Semester, 2015

    Thermal Engineering Laboratory, Autumn Semester, 2015

    Experimental Methods In Mechanical Systems, Autumn Semester, 2015

    Measurement Systems In Mechanical Engineering, Autumn Semester, 2015

    Engineering Thermodynamics, Spring Semester, 2016

    Fluid Mechanics-II, Spring Semester, 2016

Administrative Responsibility

Preparation of Institute Ranking, Member, from 2015-16
    Exploring International Collaboration and Cooperation, Member, from 2015-16
    Food Committee, Convocation, Member, from 2015-16
    Grade Evaluation Committee, ME, Member, from 2015-16
    Physical Verification of Departmental Stock, Member, from 2015-16
    Screening & Selection Committee for PhD Enrollment, Member, from 2015-16
    Committee for opening quotations for supply of consumables, Member, from 2015-16
    Mentor Faculty for 1st and 2nd year B.Tech Student, Mentor, from 2015-16
    MTP, ME, Coordinator, from 2015-16
    Screening Committee for TA, ME, Chairman, from 2015-16
    Screening Committee for MTS (Fitter), Member, from 2015-16
    Advisory Committee, Member, from 2016
    Food Committee, Institute Day, Member, from 2016
    Food Committee, Convocation, 2016, Member, from 2016

Work Experience

Assistant Professor, ME Department, NIT Agartala, Agartala, Tripura, India
(July, 2014-June, 2015)
Assistant Professor, ME Department, NIT Meghalaya, Shillong, Meghalaya, India
(July, 2015-Present

Confernce/Workshop/Seminar Attended

Conference

Sl No.	Name	Period	Place	National\|International
	5th International sorption heat pump conference	April, 6-8, 2011	Padua, Italy	International
	National conference on refrigeration and air-conditioningDec, 12-14, 2013	Dec, 12-14, 2013	IIT Chennai, India	National

Workshops:

Sl No.	Name	Period	Place	National/International
1	Fluid Flow and Heat Transfer in Microchannel	21-22 August, 2014	NIT Agartala	National
2	Advanced Energy and Thermal Systems	2-7 January, 2014	DCRUST, Murthal	National
3	Recent Advances in Micro/Nanoscale Heat Transfer and Applications in Clean Energy Technologies	Dec 21-22, 2013	IIT Ropar	International
4	Renewable Energy for Inclusive Growth & Workshop on Solar Energy Opportunities	1-3 December, 2010	Chandigarh	National

Awards

Sl No.	Award Details	Year
1	The technical paper entitled “Development of solar driven liquid desiccant cooling system” was awarded ‘Best Paper’ in the National conference on Advances in Refrigeration and Air-Conditioning (NCARAC-2014)	2014

Head of Department

Faculty