Mechanical Engineering

Head of Department

Dr. Kishore Debnath
Ph.D (IIT Roorkee)

E-mail:
hod.me@nitm.ac.in

Faculty

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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

25th National and 3rd 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

25th National and 3rd 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

14th 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 5th 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