Open Access

ARTICLE

Heat and Humidity Transport Analysis Inside a Special Underground Building

Jian Ai¹, Jie Xue^1,*, Jiabang Yu^1,2, Xinyu Huang², Pan Wei^1,2, Xiaohu Yang², Bengt Sundén^3,*

1 China Northwest Architecture Design and Research Institute, Co., Ltd., Xi’an, 710018, China
2 School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
3 Lund University, Lund, 22100, Sweden

* Corresponding Authors: Jie Xue. Email: ; Bengt Sundén. Email:

Frontiers in Heat and Mass Transfer 2023, 21, 47-63. https://doi.org/10.32604/fhmt.2023.045134

Received 18 August 2023; Accepted 05 October 2023; Issue published 30 November 2023

Abstract

The calculation of heat and humidity load serves as the cornerstone of Heating, Ventilation, and Air Conditioning (HVAC) design. Nevertheless, as the heat and humidity load characteristics of underground structures differ substantially from those of above-ground structures, it is a challenge to derive their accurate calculation procedure through engineering experience. Therefore, it is particularly important to carry out quantitative research on heat and humidity load. This study used Design Builder software to study the influence of the design state point of air conditioning in underground buildings on energy consumption. The study showed that compared with the single design temperature of 18°C, setting the temperature of 16°C in winter and 22°C in summer could reduce energy consumption by about 59%. And the hourly heat load, cooling load and humidity load in one year are simulated and calculated so as to quantitatively analyze the characteristics of the load. This provides a database for selecting suitable HVAC equipment. It is further emphasized that dehumidification is the key to HVAC design of underground structures, which provides a reference for similar engineering designs.

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Keywords

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