Impact of coupled heat and moisture transfer on indoor comfort and energy demand for residential buildings in hot-humid regions

Xia, Dawei; Zhong, Zhengnan; Huang, Yu; Zou, Yukai; Lou, Siwei; Zhan, Qiaosheng; Guo, Jialiang; Yang, Jiahao; Guo, Tongye

doi:10.1016/j.enbuild.2023.113029

Cited by 9 publications

(6 citation statements)

References 45 publications

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“…These facilities differ only in the way convective boundary conditions were controlled. The wall scale can be divided into exposure to controlled conditions in the climate chamber (including one-sided and doubled-sided responses) [93,[118][119][120][121][122] or natural outdoor conditions on one side (including single-layer and multilayer walls) [2,[124][125][126].…”

Section: Experimental Validationmentioning

confidence: 99%

“…Indeed, buildings are subjected to various internal and external solicitations that have an effect on their hygrothermal behavior. Inhabitant comfort and indoor air quality are both significantly impacted by these requests, and temperature and moisture play a crucial role [1,2]. This has led to the development of humidity control materials such as geo-based material [3][4][5][6][7] (rammed earth, cob earth material), bio-based material [8][9][10][11] (natural fiber components, straw, hemp), and generally the innovative ecofriendly materials.…”

Section: Introductionmentioning

confidence: 99%

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A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

Sawadogo,

Godin,

Duquesne

et al. 2023

Buildings

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Buildings are submitted to various external and internal solicitations that could affect its energy performance. Among these solicitations, temperature and moisture play a crucial role and could irrevocably affect the comfort of the occupants and the indoor air quality of the living environment. To assess the impact of the solicitation on building performance, a precise modeling of the heat, air, and moisture transfer phenomenon is necessary. This work proposes an extensive review of the hygrothermal models for building envelopes. The different models are divided into nodal and HAM techniques for heat, air, and moisture (HAM) transfer models. The HAM approach has been classified based on four driving potentials: moisture content, relative humidity, capillary pressure, and vapor pressure. Phase change materials (PCMs), alongside hygroscopic materials, enhance building thermal capacity and energy efficiency. There are various approaches to studying phase changes, with enthalpy-based and heat capacity approaches being the most popular. Building performance can be improved by combining PCM thermal inertia with hygroscopic moisture management. This review has exhibited the need for numerical models that address phase change and moisture behavior in these hybrid materials, capable of controlling temperature and humidity.

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Section: Experimental Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

Sawadogo,

Godin,

Duquesne

et al. 2023

Buildings

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“…Figure 1 displays a typical meteorological year for Guangzhou from 2014 to 2018, indicating an annual average air temperature of approximately 22 • C and an annual average relative humidity of around 77%. In August, the average air temperature is about 26 • C, with an average relative humidity of approximately 73% [41]. With the combination of high temperatures and high humidity in Guangzhou, summer thermal environments often experience moderate to high levels of heat stress [42].…”

Section: Study Sitesmentioning

confidence: 99%

Investigation on the Perception of Microclimatic Factors by the Elderly in Humid and Hot Areas: The Case of Guangzhou, China

Lin,

Feng,

Huang

et al. 2023

Atmosphere

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The problem of population aging in China is becoming increasingly serious. Increasing outdoor space can increase the frequency of outdoor activities for the elderly and effectively improve their quality of life. In this study, we examined the thermal comfort of outdoor activity spaces for older adults in summer using a subjective questionnaire in Guangzhou City, calculated and analyzed the perception and comfort range of microclimatic factors for older adults in hot and humid areas, and explored gender differences. The specific results were as follows: (1) The neutral physiological equivalent temperature (PET) for the overall respondents was 30.4 °C, compared to an acceptable PET of 33.8 °C. The neutral wind speed and acceptable wind speed for the overall respondents were both 0.4 m/s. The neutral relative humidity for the overall respondents was 56.49%, whereas the acceptable relative humidity was 64.94%. (2) Gender differences were observed among older respondents regarding PET and relative humidity, while no significant gender differences were found among older respondents regarding wind speed. (3) Summer thermal sensation voting for older adults in hot and humid areas were mainly centered on “hot” (30.2%), and “not too hot nor cold” (38.7%). The wind sensation voting was centered on “not high or low” (44.6%). Humidity sensation voting was mainly concentrated on “not wet nor dry” (69.4%). This study provides guidance to urban planners and architects to help them create urban environments that are more comfortable and responsive to the needs of the aging population.

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“…For example, porous materials are used in power plants, heat and mass transfer devices, heat pumps, etc. [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Given that almost all technologies are associated with porous media and heat- and mass-transfer processes in them both in technological processes and in nature, the area of scientific applications of PM is practically unlimited.…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer in Porous Materials

Pavlenko

2023

Materials

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Impact of coupled heat and moisture transfer on indoor comfort and energy demand for residential buildings in hot-humid regions

Cited by 9 publications

References 45 publications

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

A Review on Numerical Modeling of the Hygrothermal Behavior of Building Envelopes Incorporating Phase Change Materials

Investigation on the Perception of Microclimatic Factors by the Elderly in Humid and Hot Areas: The Case of Guangzhou, China

Heat and Mass Transfer in Porous Materials

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