The Analysis of Coupled Heat and Moisture Transfer in Building Envelop Based on Numerical Simulation

2012 ◽  
Vol 450-451 ◽  
pp. 1471-1476
Author(s):  
Shui Yu ◽  
Xu Zhang
Keyword(s):  
Numerical Simulation ◽  
Moisture Transfer ◽  
Heat And Moisture Transfer ◽  
Building Envelop ◽  
Coupled Heat And Moisture ◽  
Heat And Moisture

Numerical Simulation of Heat and Moisture Transfer in System of Human-Clothing with Phase Change Materials-Environment

2011 ◽  
Vol 88-89 ◽  
pp. 470-474
Author(s):  
Feng Zhi Li ◽  
Peng Fei Wang ◽  
Yi Li
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Phase Change ◽  
Skin Temperature ◽  
Phase Change Materials ◽  
Moisture Transfer ◽  
Heat And Moisture Transfer ◽  
Model Predictions ◽  
Coupled Heat And Moisture ◽  
Heat And Moisture

A model of heat and moisture transfer in human-clothing with PCM-environment system is developed. In the model, the improved 25-node model is used for simulating human thermo- regulation, and the coupled heat and moisture model is applied to the PCM’s clothing. The model predictions and experimental data are compared. Also, the influences of the PCM on human skin temperature and sweat accumulation are predicted. The results are helpful to design of thermal functional clothing.

The Analysis of Coupled Heat and Moisture Transfer in Building Envelop Based on Numerical Simulation

2012 ◽  
Vol 450-451 ◽  
pp. 1471-1476
Author(s):  
Shui Yu ◽  
Xu Zhang
Keyword(s):  
Building Materials ◽  
Moisture Transfer ◽  
Capillary Condensation ◽  
Building Energy ◽  
Environment Impact ◽  
Heat And Moisture Transfer ◽  
Common Structure ◽  
Building Envelop ◽  
Coupled Heat And Moisture ◽  
Heat And Moisture

The research of coupled heat and moisture transfer is a complex process, which is the fundamental of decreasing building energy consumption; improving IAQ and increasing the durability of building envelop. CHAMPS-BES software is an outcome of a joint effort between Building Energy and Environmental Systems Laboratory (BEESL) and Institute for Building Climatology (IBK). This software is used for analysis and prediction of hygrothermal performance of building enclosures; impact of outdoor climate and pollution on indoor environment; impact of VOC emissions from building materials and indoor furnishings on indoor air quality. This paper introduces the basic mathematic and physic model, boundary condition, climate condition etc, and analyzes the coupled heat and moisture transfer through common structure of building envelop in Shanghai. According to simulation results, main materials of the wall in ITIS have to endure larger range of temperature than ETIS that leads to the life of materials shorter. Capillary condensation occurs on inside surface of the wall easily when RH is larger than 70% and the minimum pore size of finish layer is around 5×10-9m avoiding capillary condensation and mold growth

Development of a numerical approach to assess the effect of coupled heat and moisture transfer on energy consumption of residential buildings in Moroccan context

2021 ◽  
pp. 174425912110560
Author(s):  
Yassine Chbani Idrissi ◽  
Rafik Belarbi ◽  
Mohammed Yacine Ferroukhi ◽  
M’barek Feddaoui ◽  
Driss Agliz
Keyword(s):  
Energy Consumption ◽  
Building Materials ◽  
Moisture Transfer ◽  
Residential Buildings ◽  
Building Design ◽  
Energy Performance ◽  
Climatic Conditions ◽  
Heat And Moisture Transfer ◽  
Coupled Heat And Moisture ◽  
Heat And Moisture

Hygrothermal properties of building materials, climatic conditions and energy performance are interrelated and have to be considered simultaneously as part of an optimised building design. In this paper, a new approach to evaluate the energy consumption of residential buildings in Morocco is presented. This approach is based on the effect of coupled heat and moisture transfer in typical residential buildings and on their responses to the varied climatic conditions encountered in the country. This approach allows us to evaluate with better accuracy the response of building energy performance and the indoor comfort of building occupants. Annual energy consumption, cooling and heating energy requirements were estimated considering the six climatic zones of Morocco. Based on the results, terms related to coupled heat and moisture transfer can effectively correct the existing energy consumption calculations of the six zones of Morocco, which currently do not consider energy consumption due to coupled heat and moisture transfer.

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