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A New Method for Determining Outdoor Humidity Ratio of Natatorium in Transition Season

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  • Jiaxiang Lei

    (School of Information and Control Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)

  • Honglian Li

    (School of Information and Control Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
    State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, Xi’an 710055, China)

  • Chengwang Li

    (School of Information and Control Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)

  • Minrui Xu

    (School of Environment, Education and Development, The University of Manchester, Manchester M1 5GD, UK)

Abstract

The natatorium’s ventilation problem receives much concern because of its large wet load. The outdoor humidity ratio in transition season is the basic design parameter of the ventilation calculation, directly affecting the rationality of architectural design. At present, the ventilation-curve (V-C) method is the most widely used method to determine the outdoor humidity ratio in the transition season in China. However, due to failing to reflect non-guaranteed hours, the rationality of this value is difficult to assess by employing this approach. This paper presents a new method, the typical transition season method (TTS), for determining the outdoor humidity ratio in the transition season of a natatorium. The TTS method selects the transition season based on the typical meteorological year (TMY) data and calculates the outdoor humidity ratio with multiple non-guaranteed hours. This can well-represent the local perennial climate characteristics and clearly reflect the non-guaranteed hours. In this study, through selecting six typical representative cities in China, the evaluation of the outdoor humidity ratio is achieved through calculating ventilation volume and air change rate, verifying the rationality of this method. The results show that the humidity ratio obtained by the V-C method is lower than that obtained by the TTS method at about 2 g/kg without guarantee of 200 h humidity ratio, and even that the maximum difference is 6.64 g/kg. Meanwhile, the validation results of the ventilation calculation show that the humidity ratio determined by the V-C method cannot meet the minimum design requirements in five cities, while the humidity ratio obtained by the TTS method cannot meet the requirements in only one city.

Suggested Citation

  • Jiaxiang Lei & Honglian Li & Chengwang Li & Minrui Xu, 2023. "A New Method for Determining Outdoor Humidity Ratio of Natatorium in Transition Season," Energies, MDPI, vol. 16(7), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:7:p:2990-:d:1106877
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    References listed on IDEAS

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