Experimental and numerical investigation on the effect of heat and moisture coupling migration of unsaturated lateritic clay for the soil thermal storage system

Xu, Yunshan; Zeng, Zhaotian; Sun, De’an

doi:10.1016/j.enbuild.2022.112499

Cited by 11 publications

(6 citation statements)

References 33 publications

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“…Soil temperature and humidity can have an impact on the coupled heat and moisture transfer [22]. The ground temperature is set at 23.3 • C, and the water absorption rate of ancient grey bricks generally ranges from 14% to 25% [23], so the water absorption rate of grey bricks is set at 14% in this work.…”

Section: Indoor Flooring Parametersmentioning

confidence: 99%

The Numerical Study on Indoor Heat and Moisture Transfer Characteristics of an Ancient Palace Building in Beijing

et al. 2023

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The heritage of ancient buildings is an important part of the world’s history and culture, which has extremely rich historical–cultural value and artistic research value. Beijing has a large number of ancient palace buildings, and because of the age of their construction, many of them have problems with varying degrees of peeling and molding on the inner surfaces of the envelope. To solve the problems of damp interiors of palace buildings, a mathematical model of indoor heat and moisture transfer was established based on an ancient wooden palace building in Beijing. The model was validated by fitting the measured and simulated data. And the effects of outdoor relative humidity, soil moisture, wall moisture, and other factors on indoor heat and moisture transfer of ancient buildings were simulated and analyzed via the control variables method. The results showed that the measured and simulated data are within the error range, which verifies the accuracy of the model. And the simulation of indoor humidity matched the measured humidity. Thus, the simulation results were consistent with the actual situation. The variable trend of the relative humidity of the indoor environment with the outdoor humidity is inconsistent from plane to plane, i.e., it increases or remains constant with the increase in the outdoor humidity. Indoor ambient relative humidity increased with increasing wall moisture. And the indoor average temperature is 24.5 °C, and indoor relative humidity ranged between 87.4% and 92.4%. Soil moisture and wall moisture were the main factors affecting indoor relative humidity.

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Section: Indoor Flooring Parametersmentioning

confidence: 99%

The Numerical Study on Indoor Heat and Moisture Transfer Characteristics of an Ancient Palace Building in Beijing

et al. 2023

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“…Moisture content [15,23,24,26,[48][49][50][51][52][53][54][55][56][57][58] Relative humidity [25,[59][60][61][62][63][64][65][66][67][68][69][70][71][72][73] Capillary pressure [74][75][76][77][78][79][80] Vapor pressure [81][82][83][84][85]…”

Section: Driving Potential Referencesmentioning

confidence: 99%

“…As shown by many authors, it is possible to explicitly present the temperature by modifying the saturation pressure term as it can be expressed as a function of temperature. The novel system of coupled heat and mass transfer equation becomes [65][66][67][68][69][70]:…”

Section: Models Using Relative Humidity As Driving Potentialmentioning

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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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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“…Temperature distributions were measured for establishing a reduced model of a mosque and a church, and CFD modeling (with the MSJ-CFD model) was performed to study the flow fields associated with two configurations under three distinct scenarios [15]. Xu et al [16] investigated the potential effect of coupled moisture-heat migration on the heat transfer characteristics of buried pipes through a series of modeling tests. A three-dimensional model considering the variation in the soil thermal conductivity with temperature was established and validated.…”

Section: Introductionmentioning

confidence: 99%

“…A three-dimensional model considering the variation in the soil thermal conductivity with temperature was established and validated. The model was utilized to further evaluate the effects of the heat storage temperature and initial soil moisture content on the heat transfer characteristics of buried pipes [16]. Liu et al [17] proposed an energybalanced routing protocol that could minimize the energy consumption of the network.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of the Temperature and Humidity Variations of Burial-Type Stone Relics and a Fitting Model

Liu,

Shi,

Sun

et al. 2024

Applied Sciences

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Burial stone relics remain in a humid, semi-enclosed environment for long periods, and temperature and humidity variations can cause deterioration acceleration. Yang Can’s tomb was selected as the research object, and field monitoring and simulations were performed to investigate the characteristics of temperature and humidity variations, after which the simulation results were evaluated. The monitoring results showed that solar radiation, rainfall, wind speed, and depth of entry are important factors affecting the variation in the temperature and humidity of burial stone relics. The temperature outside the chamber is greatly affected by seasonal variations, while the humidity inside the chamber is influenced by seasonal variations, so appropriate measures should be implemented inside and outside the chamber during different seasons to alleviate deterioration. On the basis of the above analysis, a temperature and humidity model for the interior chamber of burial stone relics was established in COMSOL software 5.6, combined with a porous medium heat transfer model and computational fluid dynamics (CFD) model. The temperature and humidity inside the chamber can be calculated by the temperature and humidity outside the chamber. This study provides data support for hydrothermal, condensation and other related studies of burial stone relics.

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Experimental and numerical investigation on the effect of heat and moisture coupling migration of unsaturated lateritic clay for the soil thermal storage system

Cited by 11 publications

References 33 publications

The Numerical Study on Indoor Heat and Moisture Transfer Characteristics of an Ancient Palace Building in Beijing

The Numerical Study on Indoor Heat and Moisture Transfer Characteristics of an Ancient Palace Building in Beijing

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

Characteristics of the Temperature and Humidity Variations of Burial-Type Stone Relics and a Fitting Model

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