The Analysis of Outdoor Climate, Moist Air Enthalpy and their Relation to Cooling Energy Consumption in the Tropics

  • Authors

    • Waraporn Rattanongphisat
    • Anantachai Suwannakom
    2018-11-30
    https://doi.org/10.14419/ijet.v7i4.35.22742
  • Moist air, Psychrometric, Tropics, Cooling energy, Enthalpy

  • The air conditioned auditorium classroom was monitored for energy consumption by a monitoring platform. One year collected data from energy consumption and indoor climate monitoring systems and outdoor climate data in Phitsanulok province, Thailand, where its climate classified as the tropics, was employed to determine their relation by regression analysis. The analysis of climate data showed that the outdoor temperature above 26 oC was accounted for 70% of the year this emphasizes on cooling requirement. Furthermore, the hourly cooling energy consumption ranged from 8.1 to 10.3 kWh for indoor air temperature between 20 oC and 32 oC.  The higher outdoor temperature causes the greater cooling energy consumption. The correlation between outdoor temperature and cooling energy consumption with linear regression showed the correlation coefficient of 0.38 while the correlation between temperature difference and enthalpy difference of the outdoor and indoor found the correlation coefficient of 0.71. This pointed out that the outdoor tropical climate highly affected to the cooling energy demand.

  • References

    1. [1] https://climate.nasa.gov/vital-signs/global-temperature/

      [2] Invidiata A, Ghisi E (2016) Impact of climate change on heating and cooling energy demand in houses in Brazil. Energy and Buildings 130, 20–32.

      [3] Wan K, Li D, Pan W, Lam J (2012) Impact of climate change on building energy use in different climate zones and mitigation and adaptation implications. Applied Energy 97, 274–282.

      [4] Rattanongphisat W, Prachaona T, Harfield A, Sato K, Hanaoka O (2017) Indoor climate data analysis based a monitoring platform for thermal comfort evaluation and energy conservation. Energy Procedia 138, 211-216.

      [5] Kwong QJ, Adam NM, Sahari BB (2014) Thermal comfort assessment and potential for energy efficiency enhancement in modern tropical buildings: A review. Energy and Buildings 68, 547–557.

      [6] de Dear RJ, Brager GS (2002) Thermal comfort in naturally ventilated buildings: revisions to ASHRAE Standard 55. Energy and Buildings 34, 549–561.

      [7] Zinzi M, Carnielo E, Mattonia B (2018) On the relation between urban climate and energy performance of buildings. A three-years experience in Rome, Italy. Applied Energy 221, 148-160.

      [8] ASHRAE, 2009 ASHRAE Handbook-Fundamentals (SI Edition). American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc, (2009), Atlanta, GA.

  • Downloads

  • How to Cite

    Rattanongphisat, W., & Suwannakom, A. (2018). The Analysis of Outdoor Climate, Moist Air Enthalpy and their Relation to Cooling Energy Consumption in the Tropics. International Journal of Engineering & Technology, 7(4.35), 254-257. https://doi.org/10.14419/ijet.v7i4.35.22742