Assoc. Prof. Dr. Sirichai Thepa

Division of Energy Technology
  • School of Energy Environment and Materials
Contact 0-2470-8626 , 089-506-3300
Fax 0-2470-8626
Outstanding Research

International  Journal

1.       S. Soponronnarit, N. Dussadee, J. Hirunlabh, P. Namprakai, and S.  Thepa, 1992, Computer  Simulation  of  Solar-assisted  Fruit   Cabinet   Dryer,      RERIC International Energy Journal,  Vol.14,  No.1,  June.

2.       S.  Kumsopa,  P.  Namprakai,  S.  Thepa  and  K.  Kirtikara, 1999,  Solar  Earth-Water  Distillation  From  High  Salinity  Soil  For  Production  of  Water  For  Young Trees, International Journal of Ambient  Energy, vol. 20, No. 2.

3.      S. Thepa, K. Kirtikara, J. Hirumlabh, J. Khedari, 1999,  Improving indoor conditions of Thai-style mushroom house by means of an evaporative cooler and continuous ventilation, Renewable Energy, vol 17,  pp.359-369.

4.      J. Khedari, J. Waewsak, S. Thepa, J. Hirunlabh, 2000,  Field investigation of night radiation cooling under  tropical climate, Renewable Energy, vol. 20, pp. 183-193.

5.      P. Kaunmuang, K. Kirtikara, R. Songprakorb, S. Thepa and T. Suwannakum, 2001, “Assessment of Photovoltaic Pumping Systems in Thailand-One Decade Experience, Solar Energy Materials & Solar Cells  Vol. 67, pp. 529-534.

6.      Joseph  khedari, Watchara Permchart, Naris Pratinthong, Sirichai Thepa, Jongjit Hirunlabh,  2001,  Field  study  using the ground as a sink for the condensing unit of an air conditioner in Thailand, Energy ,  Vol. 60,  pp. 797-810.

7.    Khunchai  Tunlasakun,  Krissanapong  Kirtikara,  Sirichai  Thepa  and  VeerapolMonyakul, 2005,  FPGA-Based  Islanding  Detection  for  Grid  Connected  Inverter  in  Photovoltaic  System, GESTS  International  Transactions  on  Computer  Science  and  Engineering,  Volume 23, Number 1, November, pp. 1-10.

8    P.  Sarntichartsak,  V.  Monyakul, S.  Thepa and  A.  Nathakaranakule, 2006,Simulation  and  experimental  evaluation of  the  effects  of  oil  circulation  in  an  inverter  air  conditioning  system  using  R-222  and  R- 407C,  Applied  Thermal  Engineering, 26, pp. 1481-1491.

9.   Usavadee  Tuntiwaranuruk, Sirichai  Thepa, Suvit  Tia  and  Sakarin  Bhumiratana, 2006,  Modeling  of   soil  temperature  and  moisture  with  and  without  rice  husks  in  an  agriculture  greenhouse, Renewable   Energy, 31, pp. 1934-1949.

10.    Sukruedee Nathakaranakul, Wattanapong Rakwichian,  Rak  Dandamrongrak  and  Sirichai  Thepa, 2006,  Equilibrium  Moisture  Content  of  Thai  Red  Chillies,  International  Journal  of  Renewable  Energy, Vol. 1 ,No. 2,  July,  pp. 23-29.

11.   Pongsakorn Sarntichartsak, Veerapol Monyakul, Sirichai  Thepa, 2007, Modeling  and  experimental  study  on  performance  of  inverter  air  conditioner  with  variation  of capillary  tube  using  R-22  and  R-407C,  , 48, pp. 344-354. Energy  Conversion  and  Management

12.    Tunlasakun K., Kirtikara K.,Thepa  S.,andMonyakul, V., 2007, “Comparison Between FPGA-Based and CPLD-Based Islanding Detection for Grid Connected Inverter”, GESTS International Transactions on Computer Science and Engineering, Vol. 36, No. 1, January, pp. 45-54

13.   A.Pongtornkulpanich, S. Thepa, M. Amornkitbamrung C. Butcher, 2008, Eperience  with  fully operational solar-driven 10-ton LiBr/H2O single- effect  absorption cooling system in Thailand, Renewable Energy, Vol. 33, pp 943-949.

14.   Thanathep Pittayarachasak,Sirichai Thepa,Jirasak Kongkiattikajorn,2009,Solar energy system reduces time taken to inhibit microbial growth in soil, Renewable Energy, Vol. 34, pp. 2467-2473.

15.  Thammanoon  Sookchaiya, Veerapol Monyakul , Sirichai Thepa, 2010, Assessment of the environment effects on human comfort and health for the development of novel air conditioning system in tropical regions, Energy and  building, Volume 42, issue 10, October, pp 1692  1702.

16.  U. Boonbumroong, N. Pratinthong, S. Thepa, C. Jivacate, W. Pridasawas, 2011, Particle swarm optimization for AC-Coupling stand alone hybrid power system, Solar Energy, vol. 85, pp.560-569.

17.  W. nilnont, S. Thepa, S. Janjai, N. Kasayapanand, C. Thamrongmas,B.K. Bala,2012, Finite element simulation for coffee (Coffee arabica) drying, Food and Bio-products Processing, vol. 90, Issue 2, pp. 341 – 350 (April 2012).

18.   N. Rachapradit, S. Thepa and, V .Monyakulb, 2012, An influence of Air Volume Flow Rate and Temperature Set Point on Performance of inverter Spilt–Type Air–Conditioner, Technical Article Experimental Techniques, Vol.36 , pp 18–25.

19.  Pongsakorn Santichartsak, Sirichai Thepa,2013,Modelling and experimental study on the performance of an inverter air condition using R – 410A with evaporatively  cooled condenser, Applied Thermal Engineering, Vol. 51, pp 597-610.

20.   B.Tanwanichkul,S. Thepa,W. Rordprapat, 2013,Thermal modeling of the forced convection Sandwich Greenhouse drying system for rubber sheets, Energy Conversion and Management, Vol. 74 pp511-523.

21.  S. Mongkon, S. Thepa, P. Namprakai, N. Pratinthong, 2013, Cooling performance  and Condensation evaluation of horizontal earth tube system for the tropical greenhouse, Energy and Building, Vol.66, pp. 104-111.

22. S. Mongkon, S. Thepa, P. Namprakai, N. Pratinthong, 2014, Cooling performance assessment of horizontal earth tube system and effect on planting in tropical greenhouse, Energy conversion and Management, Vol.78, pp. 225- 236.

23.   Krit TASHOO , Sirichai THEPA, Ratanachai PAIRINTRA, Pichai NAMPRAKAI, 2014,  Reducing the Air Temperature Inside the Simple Structure Greenhouse Using Roof Angle  Variation, Journal of Agricultural Sciences, 20 (2014) 136-151.

24.    Mati Nararom, Sirichai Thepa, Jirasak Kongkiattikajorn,  Roongrojana Songprakorp, 2015, Disinfection of water containing Escherichia coli by use of a compound parabolic concentrator: effect of global solar radiation and reactor surface treatment, Research on  Chemical Intermediates, Volume 41, Issue 9, pp6543-6558, springer.

25.  Wasun Darawun, Roongrojana Songprakorp, Veerapol Monyakul, Sirichai Thepa, 2015, Testing of Low-grade Heat Source Organic Rankine Cycle with Small Hot Vapor Reciprocating Engine, Energy Procedia 00 (2015) 000-000, 2015 International Conference on Alternative Energy in Developing Countries and Emerging Economies.

26.   S. Nabnean, S. Janjai, S. Thepa, K. Sudaprasert, R. Songprakorp, B.K. Bala, 2016,  Experimental performance of a new design of solar dryer for drying osmotically dehydrated cherry tomatoes, Renewable Energy, 94 ( 2016) 147-156.

27.   S. NABNEAN, S. THEPA, S.JANJAI and B.K. BALA, 2016, DRYING KINETICS AND DIFFUSIVITY OF OSMOTICALLY DEHYDRATED CHERRY TOMATOES, Journal of Food Proceesing and Preservation  00(2016) 00-00.

28.     K. Jitjack, S. Thepa, K. Sudaprasert, P. Namprakai,2016, Improvement of a rubber drying  greenhouse with a parabolic cover and enhanced panels,   Energy and Buildings,  124(2016)178-193.

29.    Sorachon Yoriya, Angkana Chumphu, Pusit Pookmanee, Wreerat Laithong, Sirichai Thepa, and Roongrojana Songprakorp, 2016, “Multi-Layered Tio2 Films Towards Enhancement of Escherichia Coli Inactivation“, Materials, [JIF2015 : 2.728], Vol. 9, No. 10, Oct, p. 12.

30.    Jittipun Sakulsuraekkapong, Rattanachai Pairintra, Sirichai Thepa, 2017, Potential of palm for

biodiesel production, Energy Source, Part B: Economics,Planning and


31.    S. Deeto, S. Thepa, V. Monyakul, R. Songprakorp, 2018, The experimental new hybrid

solar dryer and hot water storage system of thin layer coffee bean dehumidification,

Renewable Energy, Vol. 115, pp. 954-968.

32.    Yamfang, M., Thepa, S., and  Kongkiattikajorn, J.,  2018, “Development of a solar hot water

system and investigation of the effects of soil density to inhibit microbial performance in soil

with hot water dropping”,  Renewable Energy, Vol. 117, March, pp. 28-36.

33.    Kaemthapthim, N., Thepa, S., Kongkiattikajorn, J., and   Songprakorp, R. “Experimental

Study of Heat Transfer in Soil to Inhibit Microbial Growth using the Underground Release of

Hot Water and a Hydraulic Head Method”, Communications in Soil Science and Plant

Analysis, in press.

34.     Nopporn Tenissara, Sirichai Thepa, Veerapol Monyakul, 2017, Performance study of a

small-single piston expander using compressed air as working fluid, Procedia, Vol. 138,


35.     Nopporn Tenissara, Sirichai Thepa, Veerapol Monyakul, 2018, Simulation construction

and evaluation of cheap piston expander for low-pressure generation by compressed air as

working fluid, Energy,Vol. 142, pp.655-665.


1 .      Sirichai Thepa, Jirasak Kongkiattikajorn and Roongrojana Songprakorp, 2012, Chapter 18   

              Effect of solar concentration system on disinfect of soil – borne pathogen and tomato  

              seeding growth, Solar Power, Edited by Radu D. Rugescu, INTECH, Croatia.