, 44:48 | Cite as

A sensitivity analysis of the design parameters for thermal comfort of thermally activated building system

  • D G Leo SamuelEmail author
  • S M Shiva Nagendra
  • M P Maiya


Thermally activated building system (TABS) can be operated at relatively higher water temperature. Hence, it can be coupled with passive cooling systems. This paper investigates the influences of three design parameters on thermal comfort of TABS using COMSOL Multiphysics, a computational fluid dynamics (CFD) tool. For the same inlet velocity, an increase in the pipe inner diameter from 9 to 17 mm decreased the operative temperature (OT), a thermal comfort index, by 1.8°C. An increase in the pipe thermal conductivity from 0.14 to 1.4 W/mK reduced the average OT by 2.5°C. However, a further increase in thermal conductivity had no significant influence. For cooling pipes embedded at a constant depth, an increase in the thickness of both roof and floor from 0.1 to 0.2 m delayed and reduced the maximum OT by 48 minutes and 0.3°C, respectively.


Passive cooling thermally activated building system alternative technology parametric analysis design parameters thermal comfort 



This study was funded by Department of Science and Technology, Government of India (Grant No. SR/S3/MERC/00091/2012).


  1. 1.
    Yeo M, Yang I H and Kim KW 2003 Historical changes and recent energy saving potential of residential heating in Korea. Energy Build. 35: 715–727CrossRefGoogle Scholar
  2. 2.
    Zhuang Z, Li Y, Chen B and Guo J 2009 Chinese kang as a domestic heating system in rural northern China: a review. Energy Build. 41: 111–119CrossRefGoogle Scholar
  3. 3.
    Bansal N K and Shail 1999 Characteristic parameters of a hypocaust construction. Build. Environ. 34: 305–318CrossRefGoogle Scholar
  4. 4.
    Kolarik J, Toftum J, Olesen B W and Jensen K L 2011 Simulation of energy use, human thermal comfort and office work performance in buildings with moderately drifting operative temperatures. Energy Build. 43: 2988–2997CrossRefGoogle Scholar
  5. 5.
    Olesen B W 2008 Using building mass to heat and cool. ASHRAE J. 54: 44–52Google Scholar
  6. 6.
    Tian Z and Love J A 2008 A field study of occupant thermal comfort and thermal environments with radiant slab cooling. Build. Environ. 43: 1658–1670CrossRefGoogle Scholar
  7. 7.
    Henze G P, Felsmann C, Kalz D E and Herkel S 2008 Primary energy and comfort performance of ventilation assisted thermo-active building systems in continental climates. Energy Build. 40: 99–111CrossRefGoogle Scholar
  8. 8.
    Rijksen D O, Wisse C J and Van Schijndel A W M 2010 Reducing peak requirements for cooling by using thermally activated building systems. Energy Build. 42: 298–304CrossRefGoogle Scholar
  9. 9.
    Raimondo D, Olesen B W and Corgnati S P 2013 Field test of a thermal active building system (tabs) in an office building. In: Building Simulation (BS2013) International Conference, Chambery, FranceGoogle Scholar
  10. 10.
    Helsen L 2016 Geothermally activated building structures. In: Rees S (ed), Advances in Ground-Source Heat Pump Systems. New York: Elsevier Science & Technology, pp. 423–452CrossRefGoogle Scholar
  11. 11.
    Leo Samuel D G, Shiva Nagendra S M and Maiya M P 2017 Feasibility analysis of passive thermally activated building system for various climatic regions in India. Energy Build. 155: 352–363CrossRefGoogle Scholar
  12. 12.
    Sprecher P and Tillenkamp F 2003 Energy saving systems in building technology based on concrete-core-cooling. Int. J. Ambient Energy 24: 29–34CrossRefGoogle Scholar
  13. 13.
    Shen C and Li X 2016 Dynamic thermal performance of pipe-embedded building envelope utilizing evaporative cooling water in the cooling season. Appl. Therm. Eng. 106: 1103–1113CrossRefGoogle Scholar
  14. 14.
    Jin X, Zhang X, Luo Y and Cao R 2010 Numerical simulation of radiant floor cooling system: the effects of thermal resistance of pipe and water velocity on the performance. Build. Environ. 45: 2545–2552CrossRefGoogle Scholar
  15. 15.
    Antonopoulos K A, Vrachopoulos M and Tzivanidis C 1997 Experimental and theoretical studies of space cooling using ceiling-embedded piping. Appl. Therm. Eng. 17: 351–367CrossRefGoogle Scholar
  16. 16.
    Xie J, Zhu Q and Xu X 2012 An active pipe-embedded building envelope for utilizing low-grade energy sources. J. Cent. South Univ. 19: 1663–1667CrossRefGoogle Scholar
  17. 17.
    Hauser G, Kempkes C and Olesen B W 2000 Computer simulation of hydronic heating/cooling system with embedded pipes. ASHRAE Tran. 106: 702–710Google Scholar
  18. 18.
    Ma P, Wang L S and Guo N 2013 Modeling of TABS-based thermally manageable buildings in Simulink. Appl. Energy 104: 791–800CrossRefGoogle Scholar
  19. 19.
    Leo Samuel D G, Shiva Nagendra S M and Maiya MP 2017 Simulation of indoor comfort level in a building cooled by a cooling tower-concrete core cooling system under hot-semiarid climatic conditions. Indoor Built Environ. 26: 680–693CrossRefGoogle Scholar
  20. 20.
    Barnard C L 1996 A theory of fluid flow in compliant tubes. Biophys. J. 6: 717–724CrossRefGoogle Scholar
  21. 21.
    Lurie M V 2008 Modeling of Oil Product and Gas Pipeline Transportation. 1st ed. Weinheim: Wiley-VCH Verlag GmbH & Co. KGaACrossRefGoogle Scholar
  22. 22.
    Gnielinski V 1976 New equation for heat and mass transfer in turbulent pipe and channel flow. Int. Chem. Eng. 16: 359–368Google Scholar
  23. 23.
    Weather Underground. Weather History. Available at Accessed 23 Feb 2015
  24. 24.
    Stull R 2011 Wet-bulb temperature from relative humidity and air temperature. J. Appl. Meteorol. Clim. 50: 2267–2269CrossRefGoogle Scholar
  25. 25.
    ASHRAE 2013 ASHRAE Handbook: Fundamentals. Atlanta: ASHRAEGoogle Scholar
  26. 26.
    Fanger P O 1970 Thermal Comfort Analysis and Applications in Environmental Engineering. New York: McGraw-HillGoogle Scholar
  27. 27.
    Fanger P O 1982 Thermal comfort. Malabar, FL: Robert E. KriegerGoogle Scholar
  28. 28.
    The Engineering ToolBox, Moist air properties. Available at Accessed 23 Jan 2014
  29. 29.
    Tsilingiris P T 2008 Thermophysical and transport properties of humid air at temperature range between 0 and 100°C. Energy Convers. Manage. 49: 1098–1110CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  • D G Leo Samuel
    • 1
    Email author
  • S M Shiva Nagendra
    • 2
  • M P Maiya
    • 3
  1. 1.Mechanical Engineering DepartmentMotilal Nehru National Institute of Technology AllahabadPrayagrajIndia
  2. 2.Department of Civil EngineeringIndian Institute of Technology MadrasChennaiIndia
  3. 3.Department of Mechanical EngineeringIndian Institute of Technology MadrasChennaiIndia

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