Title: Thermodynamic optimization of active solar thermal collectors

From: Mechanical Engg. Dept.

Jadavpur University, Kolkata, India

Under supervision of Prof. Samir Kr. Saha (Head, Mechanical Engg. Department) and

Dr. Bibek Bandopadhayay (Advisor, Ministry of New and Renewal Energy)

• M.Tech (Energy Studies)

   Completed in 1999

   From School of Energy Studies

   Javadpur University; Kolkata, India

   Secured 1^st Class, 77.36% marks

• M.Sc in Applied Mathematics

Completed in 1996

From Applied Mathematics Dept.

Calcutta University; India.

Secured 1^st Class, 74.4% marks

• B.Sc (Hons. ) in Mathematics

Completed in 1994

From Calcutta University

Secured 2^nd Class, 58.75% marks

Scholarship Obtained

GATE Qualified in Mathematics

Score Card No.: G05225

Reg. No.  : MA 508245

Year   : 1997

Percentile  : 89.27

Projects Developed

 
 

• Test Bed Design for Solar Water Heating System

A test bed for evaluating the performance of solar thermal systems was designed and set up at Solar Energy Centre, MNRE. The test bed is fully automated. The data are collected by using sensors and can be viewed by Lab view. The test bed allows evaluating the performance of two systems simultaneously. The performance of two water heating systems of TataBP were compared.

Guided by Dr. Bibek Bandopadhayay, Solar Energy Center, MNRE

• Development of Test Procedure for Solar Thermal System

Test procedure for evaluating the performance of solar water heating system was developed and validated. The efficiency of the system can be determined and which remains the same at varying geographical conditions.

Guided by Dr. Bibek Bandopadhayay, Solar Energy Center, MNRE

• Development of Software for BIS Test procedure

Software is developed to evaluate the thermal efficiency of collectors following the BIS test procedure. It produces all reports and graphs for the efficiency calculation based on BIS procedure. The system has been developed using Java and MySQL.

Guided by Dr. Anirban Das, AIT and Dr. Bibek Bandopadhayay, MNRE

• Fabrication of Air Heater

A prototype of a solar air heater is designed and fabricated using heat tube collectors. The air heater consists of four evacuated tubes separated by 10 cm. A copper tube is passed through the tubes in the form of a serpentine. The mouths of the tubes are then insulated properly. Air is passed through the copper tube.  The temperature of the air is raised by 100ºC when the air is entering the collector at ambient temperature. The hot air can be used for drying of spices or laundry.

Guided by Dr. Bibek Bandopadhayay, MNRE

• Thermodynamics Optimization of a Solar Flat Plate Collector and Air Heater

The operation of any Solar Collector is thermodynamically irreversible. The process of the solar energy collection is accompanied by generation of entropy. Lower generation of entropy results in lesser irreversibility, which in turn increases efficiency. So in the project few methods are done to minimize the entropy.

Guided by Dr. Samir Kumar Saha, Mechanical Engg., Jadavpur Univ.

Invited Talks

 
 

• Technology Development in Solar Water Heating Systems

Date & Place: 12^th Oct. 2007, Solar Energy Centre, MNRE.

Brief:  Solar thermal collectors are designed to collect solar radiation and transfer the heat to the fluid flowing through the tubes. The heat transfer to the fluid is accompanied by losses to the environment from the collector. In order to increase the heat transfer to the fluid the system has to be designed such that the losses are minimized.

Achievements

 
 

• Obtained Gold Medal for securing 1^st Position in M.Sc, Applied Mathematics, Calcutta University in 1996.
• Obtained Gold Medal for securing 1^st Position in M.Tech, Energy Studies, Jadavpur University in 1999  

Work Experience

 
 

• Research Scholar

Solar Energy Centre, MNRE India

December 2005 – till date

Job Responsibility: Guiding B.Tech and M.Tech students in developing their research projects.

• Visiting Faculty

Ansal Institute of Technology, Gurgaon

January 2006 – December 2008.

Job Responsibility: Taught the courses – Discrete Mathematics, Applied Calculus, Calculus, Probability & Statistics, Business Statistics, Operation Research for Undergraduate students, MBA students in National and International Program.

Paper Publications

 
 

• Sensitivity analysis of the test parameters of a solar flat plate collector for performance studies. Das, S., Bandyopadhyay, B., Saha, S.K., 2006 1^st National Conference on Advances in Energy Research, IIT Bombay, pp. 515-520.
• Paper accepted by International Conference on Energy Conversion and Management; BHU (India): Optimization of solar thermal collectors authored by Subhra Mukhopadhyay, Bibek Bandyopadhyay, Samir Kr. Saha.

 
 

• Mukhopadhyay, S., Saha, S.K Bandyopadhyay, B.. Entropy Generation in flat plate collector as a function of Plate Temperature. Paper is accepted in International Conference on Emerging Technologies in Environmental Sc. And Engg. AMU in conjunction with University of Toledo, Ohio, USA, Oct 26 -28, 2009.

• Paper Communicated to Institute of Engineers (India): Entropy Generation in the Fluid Flow of a Flat Plate Collector authored by Subhra Mukhopadhyay, Samir Kr. Saha and Bibek Bandyopadhyay.
• Paper Communicated to Energy: The International Journal: Comparision of exergy efficiency for a flat plate collector authored by Subhra Mukhopadhyay, Samir Kr. Saha and Bibek Bandyopadhyay.

• Book Publications
• UGC/NET/SLET Made Simple Mathematical Science. Edited by Anirban Das and Subhra Das; Jawahar Publishers & Distributors, New Delhi, 2005.
• UGC/NET/SLET Made Simple Computer Science. Edited by Anirban Das and Subhra Das; Jawahar Publishers & Distributors, New Delhi, 2003.

Extra Curricular Activities

 
 

• Performed Vocal recital and Drama in Cultural Meets
• Participated in Badminton at School level.

Personal Information

 

Name           : Dr. Subhra Das (Mukhopadhayay)

Present Address       : 1B, Block 9, Rail Vihar II, Sector - 56

                          Gurgaon, Harayana 122003

Permanent Address : Flat No. D-4, 77A Bade Raipur Road, Jadavpur,

       Kolkata –700 032

Ph. No           : 91 - 9910 444524

Date of Birth              : 27^th Aug 1974

Husband’s Name         : Dr. Anirban Das

Occupation                  : Chief Architect, Hitech Robotics Systemz Ltd.; Gurgaon

Ph. No.           : 91 - 9811145524    

 
 

• Reference: Available on request.

 
 
 

Date: 31^th July, 2009

Place: Gurgaon             Dr. Subhra Das