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Airflow and Heat Transfer in the Slot‐Vented Room with Radiant Floor Heating Unit

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  • Xiang-Long Liu
  • Guang-Cai Gong
  • Heng-Sheng Cheng
  • Li-Xing Ding

Abstract

Radiant floor heating has received increasing attention due to its diverse advantages, especially the energy saving as compared to the conventional dwelling heating system. This paper presents a numerical investigation of airflow and heat transfer in the slot‐vented room with the radiant floor heating unit. Combination of fluid convection and thermal radiation has been implemented through the thermal boundary conditions. Spatial distributions of indoor air temperature and velocity, as well as the heat transfer rates along the radiant floor and the outer wall, have been presented and analyzed covering the domains from complete natural convection to forced convection dominated flows. The numerical results demonstrate that the levels of average temperature in the room with lateral slot‐ventilation are higher than those without slot‐ventilation, but lower than those in the room with ceiling slot‐ventilation. Overall, the slot‐ventilation room with radiant floor heating unit could offer better indoor air quality through increasing the indoor air temperature and fresh air exchanging rate simultaneously. Concerning the airborne pollutant transports and moisture condensations, the performance of radiant floor heating unit will be further optimized in our future researches.

Suggested Citation

  • Xiang-Long Liu & Guang-Cai Gong & Heng-Sheng Cheng & Li-Xing Ding, 2012. "Airflow and Heat Transfer in the Slot‐Vented Room with Radiant Floor Heating Unit," Journal of Applied Mathematics, John Wiley & Sons, vol. 2012(1).
    • Handle: RePEc:wly:jnljam:v:2012:y:2012:i:1:n:287271
    DOI: 10.1155/2012/287271
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    References listed on IDEAS

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    1. S. Shateyi, 2008. "Thermal Radiation and Buoyancy Effects on Heat and Mass Transfer over a Semi-Infinite Stretching Surface with Suction and Blowing," Journal of Applied Mathematics, Hindawi, vol. 2008, pages 1-12, December.
    2. Sattari, S. & Farhanieh, B., 2006. "A parametric study on radiant floor heating system performance," Renewable Energy, Elsevier, vol. 31(10), pages 1617-1626.
    3. S. Shateyi, 2008. "Thermal Radiation and Buoyancy Effects on Heat and Mass Transfer over a Semi‐Infinite Stretching Surface with Suction and Blowing," Journal of Applied Mathematics, John Wiley & Sons, vol. 2008(1).
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