Research Papers

International Journal Publications

• Simarpreet Singh, M.P. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, “Energy Efficient multiejector CO2 cooling system for high ambient temperature”, Thermal Science and Engineering Progress 19 (2020) 100590.
• Dasi Koti, Simarpreet Singh, Guruchethan A.M., M.P. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, “Performance Evaluation of Ejector Based CO2 System for Simultaneous Heating and Cooling Application in an Indian Dairy Industry”, Thermal Science and Engineering Progress (2020) 100626.

National Journal Publications

• Simarpreet Singh, M. P. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, “CO2 Refrigeration System for High Ambient temperature” Air Conditioning and Refrigeration Journal 21 (5), 2018, 32-37. (ISHRAE)
• Simarpreet Singh, Anurag Verma, M. P. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, “Optimization of CO2 Cooling System for Refrigeration Application” Air Conditioning and Refrigeration Journal. (ISHRAE)

International Conference Proceedings

• Simarpreet Singh, Armin Hafner, Krzysztof Banasiak, Satyanarayanan Seshadri, Prakash M. Maiya, Silje Smitt, Cecilia Gabrielii, 2020 “Heat pump/chiller system for centralized kitchens in India”14th Gustav Lorentzen Natural Working Refrigerants, Kyoyo, Japan.
• Simarpreet Singh, Armin Hafner, Krzysztof Banasiak, Prakash M. Maiya, Petter Nekså, 2019 “Experimental Evaluation of a Multi-ejector Trans-critical CO2 System for Supermarkets” 25th IIR International Congress of Refrigeration, Canada.
• Krzysztof Banasiak, Simarpreet Singh, Armin Hafner, Prakash M. Maiya, Petter Nekså, Angel A. Pardinas, 2019 “Experimental investigation of CO2 systems for Indian supermarkets with parallel configuration of Multiejector” 25th IIR International Congress of Refrigeration, Canada. 
• Kundan Kumar, Simarpreet Singh, Pramod Kumar, Prakash M. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, 2019 “Experimental analysis of transcritical CO2 booster refrigeration system with heat recovery and ejector expansion” 25th IIR International Congress of Refrigeration, Canada. 
• Simarpreet Singh, Prakash M. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, 2019 “Experimental Analysis of a Novel Multi-ejector CO2 Cooling System for Supermarkets” 5th International Conference on Polygeneration, Japan.
• Dasi Koti, Simarpreet Singh, Guruchethan AM, M.P. Maiya, Armin Hafner, Krzysztof Banasiak, Petter Nekså, 2019 “Performance Evaluation of Ejector Based CO2 system for Simultaneous Heating and Cooling Application in an Indian Dairy Industry” 5th International Conference on Polygeneration, Japan. (Best paper award)
• Simarpreet Singh, Krzysztof Banasiak, Armin Hafner, Prakash M. Maiya, Petter Nekså, 2018 “Performance evaluation of CO2 ejector system with parallel compressor for supermarket application” 17th International Refrigeration and Air Conditioning Conference-Purdue, USA.
• Simarpreet Singh, Krzysztof Banasiak, Prakash M. Maiya, Armin Hafner, Petter Nekså, 2018 “Experimental evaluation of multiejector based CO2 cooling system for supermarkets in tropical zones” 17th International Refrigeration and Air Conditioning Conference-Purdue, USA.
• Simarpreet Singh, Amshith Reddy, Prakash M. Maiya, Krzysztof Banasiak, Armin Hafner, Petter Nekså, 2018 “Analysis of R744 refrigeration system with liquid ejectors” 13th Gustav Lorentzen Natural Working Fluid Conference, Valencia, Spain.
• Stefanie Blust, Simarpreet Singh, Armin Hafner, Krzysztof Banasiak, Petter Nekså, 2018 “Environment-Friendly Refrigeration Packs for Indian Supermarkets: Experimental Investigation of Energy Performance of a Multiejector-Driven R744 Integrated Compressor Rack” 13th Gustav Lorentzen Natural Working Fluid Conference, Valencia, Spain.
• Simarpreet Singh, Amshith Reddy, Prakash M. Maiya, Krzysztof Banasiak, Armin Hafner, Petter Nekså, 2018 “Performance Investigation of a Multi-Ejector R744 Heat Pump” 13th Gustav Lorentzen Natural Working Fluid Conference, Valencia, Spain.
• Bhuvanesh N.R., Simarpreet Singh, Prakash M. Maiya, Krzysztof Banasiak, Armin Hafner, Petter Nekså, 2018 “Evaluation of a fin-tube design CO2 gascooler for parallel and counter cross flow configuration”, V National Conference on Refrigeration and Air Conditioning, National Institute of Technology Karnataka Surathkal. (Best Paper Award) 
• ALVS Krishna, A.M. Guruchethan, Kundan Kumar, Simarpreet Singh, M.P. Maiya, Krzystof Banasiak, Petter Nekså, Armin Hafner, 2018 “Experimental Investigation and Ann Modelling of CO2 Ejector Refrigeration System”, V National Conference on Refrigeration and Air Conditioning, National Institute of Technology Karnataka Surathkal.

Posters Presented

• Simarpreet Singh, M. P. Maiya, Armin Hafner, Krzysztof Banasiak, “Carbon Dioxide (R744): An alternative or the only option?” REFCOLD INDIA, 2018.
• Simarpreet Singh, Sushil Surwase, M. P. Maiya, Petter Neksa, “Ejector based Carbon Dioxide refrigeration system with evaporative gas cooler” REFCOLD INDIA, 2018.
• Simarpreet Singh, Guruchetan AM, Dasi Koti, “Carbon Dioxide system for simultaneous heating and cooling applications” REFCOLD INDIA, 2018. (Best poster award)

Workshops Conducted

• “Workshop and Training Program on Natural/ CO2 Refrigeration System for Supermarket and Other Applications” a part of the Indo-Norwegian joint project “INDEE” organized by Refrigeration and Air Conditioning Laboratory, Department of Mechanical Engineering, IIT Madras and Anna University along with SINTEF & NTNU, Norway on October 5-6th, 2018 at IIT Madras, Chennai.  
• “International Workshop-Integrated CO2 Refrigeration Systems for LT, MT & HT applications and Supermarkets”, a part of the Indo-Norwegian joint project “INDEE” organized by Refrigeration and Air Conditioning Laboratory, Department of Mechanical Engineering, IIT Madras along with SINTEF & NTNU, Norway on March 12-13th, 2018 at IC&SR Auditorium, IIT Madras, Chennai.

Advanced Training

• Two days advance course on “CO2 (R744) Cooling technology: An Application based approach” organized by Norwegian University of Science and Technology (NTNU), SINTEF Energy Research, Norway and Indian Institute of Technology Madras (IIT M) on 1-2nd Nov 2019, 15-16th Nov 2019 and 6-7th Dec 2019 at IIT Madras, Chennai.

GIAN Course

• “GIAN Course on Refrigeration Technology with Natural Refrigerants, Specialization on R744 (CO2)” organized by Refrigeration and Air Conditioning Laboratory, Department of Mechanical Engineering, IIT Madras on Oct 9-13th, 2017 at IIT Madras, Chennai.