The Impact of Ventilation on Indoor Air Quality and Air Change Rate

Savanti, Fisa; Setyowati, Erni; Hardiman, Gagoek

doi:10.5109/4774237

Cited by 8 publications

(6 citation statements)

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“…The rapid development has led to severe air pollution, with Delhi being the most polluted city in the Delhi NCR. Addressing air pollution and maintaining safe and healthy air quality has become a crucial concern for the region [15][16][17] . Given its diverse physical surroundings and varying levels of socioeconomic development, Delhi NCR serves as an ideal location to compare and assess the effectiveness of different urban area mapping techniques using nighttime light data.…”

Section: Study Areamentioning

confidence: 99%

Mapping Urban Extent Associated with Socioeconomic Modelling from VIIRS/DNB Data and Landsat Imagery

Singh,

Varun Narayan Mishra,

Shukla

et al. 2023

Evergreen

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This research paper introduces a novel approach for estimating Gross Domestic Product (GDP) in the National Capital Region (NCR) of Delhi using remote sensing data. The study utilizes night-time light data from the Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) to investigate the relationship between urbanization and GDP in the region. Land Use Land Cover (LULC) changes were analyzed using Landsat data for the years 1998, 2008, and 2018, while VIIRS/DNB data was employed to extract urban areas for the years 2012, 2015, 2018, and 2021. GDP estimates for NCR Delhi were derived from state-wise statistics of Delhi, Uttar Pradesh, and Haryana for the years 2012 to 2021. The analysis reveals a statistically significant correlation between urban area growth and GDP growth in the Delhi NCR. Regression analysis is employed to establish the relationship between GDP and night time light data, resulting in the prediction of an estimated GDP of 1,02,00,000 million INR for the year 2023. This study demonstrates the potential of remote sensing data for estimating socioeconomic indicators and provides valuable insights into the changing landscape of the Delhi NCR.

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Section: Study Areamentioning

confidence: 99%

Mapping Urban Extent Associated with Socioeconomic Modelling from VIIRS/DNB Data and Landsat Imagery

Singh,

Varun Narayan Mishra,

Shukla

et al. 2023

Evergreen

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“…Another significant aspect of a healthy and comfortable building design is the availability of an adequate ventilation system. In buildings, ventilation functions for circulation and air conditioning to keep the rooms fresher, healthier, and more comfortable [16], [17]. The stale and warm air inside the room must be vented outside to replace it with cooler and cleaner air.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Air Ventilation Cooling With Earth-Water Heat Exchangers in Residential Buildings

Lapisa,

Jasman,

Kurniawan

et al. 2024

TEM Journal

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This study investigated the cooling effect of an Earth Water-Air Heat Exchanger (EWAHE) device for ventilation applications. To address the lack of data on EWAHE performance in moderate climates, we measured temperature parameters (inlet-outlet, indoor-outdoor, water, and soil) continuously for three days. Air temperatures, air flowrate, light intensity are measured using a multi-channel data logger with several sensors. Results showed that the EWAHE effectively reduced indoor air temperature by an average of 7.5°C with a maximum reduction of 9.3°C, offering a promising passive cooling solution for buildings. The primary limitation of this study is that it requires open space around the building to place the device, so this method is inappropriate for building in a dense urban area. Future studies could investigate the association between ground-water cooling effect and natural ventilation without using energy for air circulation.

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“…al and Bahar et. al 15,28) investigated the effect of ventilation on indoor air quality and air exchange rate using SPSS software. They found that a lack of natural ventilation reduces the rate of air exchange, which affects air quality.…”

Section: Introductionmentioning

confidence: 99%

Simulating the Fluid Flow via Ceiling Diffuser Using OpenFOAM

Gupta¹

2023

Evergreen

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HVAC (heating ventilation and air conditioning) deals with cooling and heating buildings and providing clean conditioned air for indoor environments such as commercial office spaces, cinemas, and hotels to name a few. Diffusers help to effectively distribute air coming from HVAC ducts into indoor environments. Understanding the flow distribution from the diffuser is of great significance as it helps in locating the optimal location for the diffuser as well helps in designing a better diffuser. With the advent of high-performance computing, numerical simulation is mainly being used to predict airflow via Computational fluid dynamics (CFD). OpenFOAM is an open-source CFD solver written in C++ for solving fluid dynamics problems. In this work, a free architecture design tool called PCON was used to create the geometry of the office/home along with the furniture. OpenFOAM was used to create a mesh and simulate the flow through a square ceiling diffuser and understand the Coanda effect which is created by such a diffuser. Open source code called Paraview was used to analyze the CFD simulations and the results were reported in this paper. In central A/C systems, Freon has been used for decades. Freon, just like R12, has been linked to environmental damage. This work shows how diffusers can help with the efficient distribution of conditioned air in closed spaces. With the efficient distribution of air, Freon would be used less and in turn, more efficiently in a given space. This could prevent environmental damage to some extent.

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The Impact of Ventilation on Indoor Air Quality and Air Change Rate

Cited by 8 publications

References 0 publications

Mapping Urban Extent Associated with Socioeconomic Modelling from VIIRS/DNB Data and Landsat Imagery

Mapping Urban Extent Associated with Socioeconomic Modelling from VIIRS/DNB Data and Landsat Imagery

Optimizing Air Ventilation Cooling With Earth-Water Heat Exchangers in Residential Buildings

Simulating the Fluid Flow via Ceiling Diffuser Using OpenFOAM

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