Journal of the Architectural Institute of Korea Planning & Design (대한건축학회논문집:계획계)

Architectural Institute of Korea (대한건축학회)
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Regional Preheat Coil Capacity Estimation for Preventing Condensation in Sensible Heat or Energy Recovery Ventilators

열회수형 환기장치의 결로방지를 위한 지역별 예열코일 용량산정 및 분석

  • Received : 2016.08.10
  • Accepted : 2016.10.21
  • Published : 2016.10.30
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Abstract

Heat recovery ventilator and energy recovery ventilator (HRVs/ERVs) save energy load in buildings by reusing the heat from exhaust air. However, when HRVs/ERVs are operated in winter season, condensation may occur in heat exchange process causing negative influence not only on occupants but also on the performance of the system; mold and bacteria are developed through condensation causing respiratory diseases to occupants, and frosts may be developed once the condensation meets the air with the temperature under the freezing point causing the efficiency of exchangers to drop dramatically or even the breakdown of the whole system. Many methods to prevent condensation or frost have been suggested however preheating may be the simplest and the most certified method to guarantee the performance of the HRVs/ERVs systems. In this paper, variable factors for sizing the capacity of preheating coils have been verified. Also, the appropriate preheating capacity of HRVs/ERVs for different regions in Korea have been suggested based on the frost threshold temperature and the design procedure for various conditions.

Keywords

Acknowledgement

Supported by : 한국연구재단, 국토교통과학기술진흥원(KAIA)

References

  1. Anisimov, S., Jedlikowski, A., & Pandelidis, D. (2015). Frost formation in the cross-flow plate heat exchanger for energy recovery, International Journal of HEAT and MASS TRANSFER, 90, 201-217 https://doi.org/10.1016/j.ijheatmasstransfer.2015.06.056
  2. Freund, S., Klein, S., & Reindl, D. (2011). A Semi-Empirical Method to Estimate Enthalpy Exchanger Performance and Comparison of Alternative Frost Control Strategies, HVAC&R Research, 9:4, 493-508
  3. Jeon, B., Kim J., Lee, S., & Lee, Y. (2013). A Study on the Dew Condensation According to the Operatoinal Conditions of Heat Recovery Ventilator, Korean Journal of Air Conditioning and Refrigeration Engineering, 25(10), 529-533 https://doi.org/10.6110/KJACR.2013.25.10.529
  4. Kim, C., Kim, D., Shin, B., & Kum, J. (2014). Study on Anti icing techniques for motor damper of Heat Recovery Ventilator in apartment house, Journal of Korean Institute of Architectural Sustainable Environment and Building Systems, 8(4), 182-186
  5. Kim, I., & Park, W. (2009). A Study on Performance of Energy Recovery Ventilator under Outdoor Conditions in Korea, Journal of academia-industrial technology, 10(1), 52-57
  6. Lee, K. (2012). The magazine of the society of air-conditioning and refrigerating engineers of Korea, The Society of Air-Conditioning and Refrigerating Engineers of Korea, 41(10), 36-43
  7. Liu, P., Nasr, M., Ge, G., Alonso, M., Mathisen, H., Fathieh, F., & Simonson, C. (2016). A theoretical model to predict frosting limits in cross-flow air-to-air flat plate heat/energy exchangers, Energy and Buildings, 110, 404-414 https://doi.org/10.1016/j.enbuild.2015.11.007
  8. Ministry of Land, Infrastructure and Transport in Korea, (2015). Design standard to prevent dew condensation in an apartment houses, 2
  9. Nam, H., Bai, C., Kwon, Y., Kim, S., & Chu, E. (2011). A study on Reducing Condensation in Winter Operating of Total Heat exchanger, The Society of Air Condotioning and Refrigerating Engineers of Korea, 747-750
  10. Nasr, M., Fauchoux, M., Besant, R. & Simonson, C. (2013). A review of frosting in air-to-air energy exchangers, Renewable and Sustainable Energy Reviews, 30, 462-468
  11. Nielsen, T., Rose, J., & Kragh, J., (2009). Dynamic model of counter flow air to air heat exchanger for comfort ventilation with condensation and frost formation, Renewable and Sustainable Energy Reviews, 538-554
  12. Kragh, J., Rose, J., & Svendsen, S. (2016). Mechanical ventilation with heat recovery in cold climate, Proceedings of the 7th Symposium on Building Physics in the Nordic Countries.