Application Method of a Simplified Heat and Moisture Transfer Model of Building Construction in Residential Buildings

Kim, Joowook; Brandemuehl, Michael J.

doi:10.3390/en14144180

Cited by 3 publications

(3 citation statements)

References 20 publications

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“…Airflows between internal zones and between indoor and outdoor spaces can cause problems in relation to indoor environmental quality (IEQ) and building energy consumption, such as air pollutant transfer [1][2][3], excessive energy consumption due to air infiltration [4][5][6][7], as well as occupants' discomfort [8,9]. The key to mitigating these problems is to investigate in real time the variations in indoor environmental parameters such as the concentration of air pollutants, temperature, humidity, and the absolute pressure.…”

Section: Introductionmentioning

confidence: 99%

A Sensing-Based Visualization Method for Representing Pressure Distribution in a Multi-Zone Building by Floor

Jing

Lee

Joe

et al. 2023

Sensors

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Airflow in a multi-zone building can be a major cause of pollutant transfer, excessive energy consumption, and occupants discomfort. The key to monitoring airflows and mitigating related problems is to obtain a comprehensive understanding of pressure relationships within the buildings. This study proposes a visualization method for representing pressure distribution within a multi-zone building by using a novel pressure-sensing system. The system consists of a Master device and a couple of Slave devices that are connected with each other by a wireless sensor network. A 4-story office building and a 49-story residential building were installed with the system to detect pressure variations. The spatial and numerical mapping relationships of each zone were further determined through grid-forming and coordinate-establishing processes for the building floor plan. Lastly, 2D and 3D visualized pressure mappings of each floor were generated, illustrating the pressure difference and spatial relationship between adjacent zones. It is expected that the pressure mappings derived from this study will allow building operators to intuitively perceive the pressure variations and the spatial layouts of the zones. These mappings also make it possible for operators to diagnose the differences in pressure conditions between adjacent zones and plan a control scheme for the HVAC system more efficiently.

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Section: Introductionmentioning

confidence: 99%

A Sensing-Based Visualization Method for Representing Pressure Distribution in a Multi-Zone Building by Floor

Jing

Lee

Joe

et al. 2023

Sensors

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“…In the imaging process of super-resolution images, degradation processes such as optical and motion blur, down sampling and noise are often generated due to the physical conditions of the imaging system or many external factors, which make the resolution of the image not reach the people's requirements [12][13][14][15][16]. Therefore, the effective enhancement of small features of super-resolution images has become a problem to be solved in this field [17][18].…”

Section: Introductionmentioning

confidence: 99%

Study on the application of multi-angle imaging related technology in the construction process

Gao

2023

Applied Mathematics and Nonlinear Sciences

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The mufti-angle imaging technique is proposed to address the wall position offset and the side flaps and gate flaps caused by the sparse array in the ultra-wide band through-wall radar building layout imaging, using the characteristic that the azimuth upward distance profile is similar around the main flap but different around the side flap/gate flap. Firstly, after the backward projection algorithm obtains the wall image of each viewpoint, the mufti-directional two-dimensional matching filter is used to enhance the image of each viewpoint and eliminate the effect of side flaps and raster flaps. Then the images of each viewpoint are decomposed by combining the multistage transform, i.e., the non-down sampling contour let transform, and the obtained low-frequency components and high-frequency components are fused using the corresponding fusion rules, respectively. Finally, the final fused building layout image is obtained by non-down sampling contour let inverse transform. The simulation experimental data show that the running time of the method in this paper is 10.99s. It shows that the proposed method enhances the outline and detail information of the building wall, and the final fused image obtained has prominent wall image, clearer edge contours, and good retention of overall detail information. The quality of image fusion is greatly improved than other methods, which paves the way for subsequent fusion methods including chatterers such as construction building corners and windows and doors.

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“…It is also crucial for energy efficiency and for creating a comfortable indoor environment. Joowook et al [ 16 ] proposed a simplified heat and moisture transfer model for building envelopes. Ivanov et al [ 17 ] revealed a numerical study of the risk of condensation over the exterior wall of a typical residential room, and the resulting surface and dew point temperature distribution are derived over the simulated exterior wall.…”

Section: Introductionmentioning

confidence: 99%

Influence of geographical location and outdoor meteorological parameters on indoor humidity environment in rural residential buildings during the Plum Rains Season in the hot summer and cold winter region

He,

Zhou,

Liu

et al. 2023

PLoS ONE

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Plum Rains Season (PRS) has the typical characteristics of outdoor air temperature dramatic changes and high air humidity in the hot summer and cold winter region in China. When the outdoor temperature rises rapidly during PRS, the building envelope surface temperature is probably lower than the indoor air dew point temperature, resulting in moisture condensation. This paper evaluates the influence of geographical location and outdoor meteorological parameters on the indoor humidity environment. The effects of critical parameters such as altitude, average temperature, relative humidity, total precipitation, total precipitation days, atmospheric pressure, and wind speed on the building envelope moisture condensation in nine typical cities in the hot summer and cold winter region were simulated and analyzed. The results show that the Condensation Frequency (CFn) in the western, central, and eastern regions reached the highest in April, May, and June, respectively. Among the nine typical cities, Changsha has the highest Condensation Risk (CR). In addition, the altitude, total precipitation, and atmospheric pressure have little effect on the indoor humidity environment, and it is not directly related to CR; The average temperature and total precipitation days were not related to CR in the western and eastern regions and positively correlated with CR in the central region; The wind speed was positively correlated with CR in the western and central regions and negatively correlated in the eastern region; The relative humidity can affect the indoor humidity environment and moisture condensation on the inner surface of walls, when the relative humidity increases, the CR increases.

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Application Method of a Simplified Heat and Moisture Transfer Model of Building Construction in Residential Buildings

Cited by 3 publications

References 20 publications

A Sensing-Based Visualization Method for Representing Pressure Distribution in a Multi-Zone Building by Floor

A Sensing-Based Visualization Method for Representing Pressure Distribution in a Multi-Zone Building by Floor

Study on the application of multi-angle imaging related technology in the construction process

Influence of geographical location and outdoor meteorological parameters on indoor humidity environment in rural residential buildings during the Plum Rains Season in the hot summer and cold winter region

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