Cloud-based real-time optimization control system for chiller plant, district cooling, smart pumping network, and adsorption/absorption Chiller.-Machine learning system for refrigeration cycle using grey box model and genetic algorithm.
Dew Point/ Direct/ Indirect Evaporative Cooling.-Heat and mass transfer of membrane and solid desiccant for dehumidification.-Vacuum multi Effect Membrane Distillation for Liquid Desiccant Air Conditioning.
Cascading temperature waste heat recovery system.-Decentralize Energy Resources for district heating and cooling system (PolyGen).-Phase change energy storage system.
Development of situ probe for Methane Hydrate layer.
Characteristic of methane hydrates during formation and dissociation.
Response of Methane Hydrate under Microwave Irradiation.
Selected Publications
Isotherms and thermodynamics for the adsorption of n-butane on Maxsorb III; B. B. Saha, A. Chakraborty, S. Koyama, S. H. Yoon, M. Kumja, C. R. Yap and K.C.Ng, International Journal of Heat and Mass Transfer, Volume 51, Issues 7-8, April 2008, Pages 1582-1589.
Modelling of a Novel Desorption Cycle Used by Dielectric Heating Method; M Kumja, Ng Kim Choon, Christopher Yap, H Yanagi , S. Koyama,B. B. Saha, A.Chakarborty, Modern Physics Letters B, Vol. 23, No.3 (2009) Pages 425-428.
The adsorption thermodynamics and performance analysis of an idealized adsorption cycle using HFC-134a and activated carbon; Wai Soong Loh, Kum Ja M, Kazi Afzalur Rahman, Kim Choon Ng, B. B. Saha, S. Koyama, Ibrahim I.El-Sharkawy; Heat Transfer Engineering
Numerical and experimental investigations on a two-bed mode adsorption chiller; M Kumja, Ng Kim Choon, Christopher Yap, Ibrahim I.El-Sharkawy,Wan Jinbao, A. Chakraborty, B. B. Saha, S. Koyama; The 22nd IIR International Congress of Refrigeration, August,2007, ICR07-E2-1063.
Numerical and Experimental Study on Heat Transfer Process under Microwave Irradiation Using Reflector to Enhance Energy Absorption Rate; M Kumja, Ng Kim Choon, Wai Soong Loh, Mark Aaron Chan,Christopher Yap2008 ASME Summer Heat Transfer Conference, August, 2008, Jacksonville, FL, USA.
Modeling of a Novel Desorption Cycle Used by Dielectric Heating Method; M Kumja, Ng Kim Choon, Christopher Yap, H Yanagi , S. Koyama,B. B. Saha, A.Chakarborty. The Second International Symposium on Physics of Fluids (ISPF2), June, 2008, Jiuzhaigou, China
Modeling and Simulation of a Novel Microwave Driven Sorption Cycle; M Kumja, Ng Kim Choon, Christopher Yap, S. Koyama, B. B. Saha, (ISHP 2008) International Sorption Heat Pump Conference, September, 2008, Seoul, KOREA.
A thermodynamic perspective to study energy performance of vacuum-based membrane dehumidification; DT Bui, MK Ja, JM Gordon, KC Ng, KJ Chua,Energy 132, 106-115.
Multivariate scaling and dimensional analysis of the counter-flow dew point evaporative cooler; J Lin, RZ Wang, M Kumja, TD Bui, KJ Chua. Energy Conversion and Management 150, 172-187.
Recent developments in solid desiccant coated heat exchangers–A review; P Vivekh, M Kumja, DT Bui, KJ Chua,Applied Energy 229, 778-803.
Modelling and experimental investigation of the cross-flow dew point evaporative cooler with and without dehumidification, J Lin, RZ Wang, M Kumja, TD Bui, KJ Chua, Applied Thermal Engineering 121, 1-13.
Experimental study on the performance of membrane based multi-effect dehumidifier regenerator powered by solar energy; FH Choo, M KumJa, K Zhao, A Chakraborty, ETM Dass, M Prabu, B Li, Energy Procedia 48, 535-542.
A thermodynamic platform for evaluating the energy efficiency of combined power generation and desalination plants; KC Ng, M Burhan, Q Chen, D Ybyraiykul, FH Akhtar, M Kumja, RW Field, npj Clean Water 4 (1), 1-10
Education
Ph.D. in Mechanical Engineering, Nov 2010, National University of Singapore, Singapore.
Professional Profile
7 Jan 2021- Present: Research Scientist, Water Desalination and Reuse Center, KAUST, Saudi Arabia
26 Nov 2015- 8 Aug 2020: Senior Research Fellow, Energy Conversion Lab Mechanical Engineering Department, National University of Singapore
17 Jul 2012-25 Nov 2015: Research Fellow, Energy Research Institute @NTU Nan yang Technological University, Singapore
Apr 2010–May 2011: Research Fellow, Centre for Offshore Research& Engineering, Civil Engineering Department, National University of Singapore
Sep 2009 –Apr 2010: Research Fellow (B), Energy Sustainability Unit (ESU), School of Design and Environment, National University of Singapore
Jan2005–Oct 2010: Ph.D. Research Student, Micro Systems Technology Initiative Lab, Department of Mechanical Engineering, National University of Singapore
1998 -2004: Assistant Lecturer, Department of Mechanical, MTU Mandalay. Myanmar
Awards
“IES Prestigious Engineering Achievement Awards 2018” from Institution of Engineers,Singapore (IES)
“ASEAN Outstanding Engineering Achievement Award” from ASEAN Federation of Engineering Organizations in 2018
