Effectiveness of ultraviolet germicidal irradiation (UVGI) systems in air handling units in enhancing energy performance

Yi Wang, Chandra Sekhar, William P. Bahnfleth, Sundaram Karuppaiah

Research output: Contribution to conferencePaper

Abstract

This paper presents the impacts of UVGI systems on cooling coil performance in hot and humid climate. The purpose of this study is to investigate the effects of UVGI systems on pressure drop reduction and air-side heat transfer enhancement. Speed variation experiments were employed before and after UVGI operation to comparatively demonstrate the effects of UVGI systems. The results show that pressure drop is more sensitive to the impacts of UVGI than heat transfer coefficient. It takes longer time for UVGI system to take effects on heat transfer coefficient than on pressure drop. In addition, bio-fouling has much more significant impacts on heat transfer reduction than dust fouling. The impacts of dust fouling on pressure drop are more significant than on heat transfer rate. The UVGI system has been in operation for 8 weeks by mid March and the experiment is still in progress. The future impacts will be evaluated as the experiment continuous.

Original languageEnglish (US)
Pages630-636
Number of pages7
StatePublished - Jan 1 2014
Event13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014 - Hong Kong, Hong Kong
Duration: Jul 7 2014Jul 12 2014

Other

Other13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
CountryHong Kong
CityHong Kong
Period7/7/147/12/14

Fingerprint

Hot Temperature
Air
Irradiation
Pressure
Pressure drop
Dust
Heat transfer
Fouling
Heat transfer coefficients
Climate
Biofouling
Experiments
Cooling

All Science Journal Classification (ASJC) codes

  • Pollution
  • Building and Construction
  • Health, Toxicology and Mutagenesis
  • Computer Science Applications

Cite this

Wang, Y., Sekhar, C., Bahnfleth, W. P., & Karuppaiah, S. (2014). Effectiveness of ultraviolet germicidal irradiation (UVGI) systems in air handling units in enhancing energy performance. 630-636. Paper presented at 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, Hong Kong.
Wang, Yi ; Sekhar, Chandra ; Bahnfleth, William P. ; Karuppaiah, Sundaram. / Effectiveness of ultraviolet germicidal irradiation (UVGI) systems in air handling units in enhancing energy performance. Paper presented at 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, Hong Kong.7 p.
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abstract = "This paper presents the impacts of UVGI systems on cooling coil performance in hot and humid climate. The purpose of this study is to investigate the effects of UVGI systems on pressure drop reduction and air-side heat transfer enhancement. Speed variation experiments were employed before and after UVGI operation to comparatively demonstrate the effects of UVGI systems. The results show that pressure drop is more sensitive to the impacts of UVGI than heat transfer coefficient. It takes longer time for UVGI system to take effects on heat transfer coefficient than on pressure drop. In addition, bio-fouling has much more significant impacts on heat transfer reduction than dust fouling. The impacts of dust fouling on pressure drop are more significant than on heat transfer rate. The UVGI system has been in operation for 8 weeks by mid March and the experiment is still in progress. The future impacts will be evaluated as the experiment continuous.",
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Wang, Y, Sekhar, C, Bahnfleth, WP & Karuppaiah, S 2014, 'Effectiveness of ultraviolet germicidal irradiation (UVGI) systems in air handling units in enhancing energy performance' Paper presented at 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, Hong Kong, 7/7/14 - 7/12/14, pp. 630-636.

Effectiveness of ultraviolet germicidal irradiation (UVGI) systems in air handling units in enhancing energy performance. / Wang, Yi; Sekhar, Chandra; Bahnfleth, William P.; Karuppaiah, Sundaram.

2014. 630-636 Paper presented at 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, Hong Kong.

Research output: Contribution to conferencePaper

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Wang Y, Sekhar C, Bahnfleth WP, Karuppaiah S. Effectiveness of ultraviolet germicidal irradiation (UVGI) systems in air handling units in enhancing energy performance. 2014. Paper presented at 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, Hong Kong.