scholarly journals Computational Fluid Dynamics Analysis of an Evaporative Cooling System

2016 ◽  
Vol 66 (2) ◽  
pp. 117-124
Author(s):  
N. Kapilan ◽  
M. Manjunath Gowda ◽  
H. N. Manjunath
Keyword(s):  
Climate Change ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Urban Areas ◽  
Cooling System ◽  
Evaporative Cooling ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Computational Fluid Dynamics Analysis ◽  
Evaporative Cooling System

Abstract The use of chlorofluorocarbon based refrigerants in the air-conditioning system increases the global warming and causes the climate change. The climate change is expected to present a number of challenges for the built environment and an evaporative cooling system is one of the simplest and environmentally friendly cooling system. The evaporative cooling system is most widely used in summer and in rural and urban areas of India for human comfort. In evaporative cooling system, the addition of water into air reduces the temperature of the air as the energy needed to evaporate the water is taken from the air. Computational fluid dynamics is a numerical analysis and was used to analyse the evaporative cooling system. The CFD results are matches with the experimental results.

scholarly journals Disain dan Uji Kinerja Pendingin Evaporatif Tipe Aliran Searah Menggunakan CFD (Computational Fluid Dynamics)

2021 ◽  
Vol 10 (3) ◽  
pp. 338
Author(s):  
Hikmah Yuliasari ◽  
Kavadya Syska ◽  
Ropiudin Ropiudin
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Cooling System ◽  
Evaporative Cooling ◽  
Cold Chain ◽  
Cfd Analysis ◽  
Direct Flow ◽  
Flow Type ◽  
Evaporative Cooling System ◽  
Evaporative Cooler

 After harvesting, fruits will change due to physiological, physical, chemical, and microbiological influences, and they are living materials. Therefore, it is necessary to know how to harvest and handle fresh fruits and their storage conditions to handle the fruits after harvesting so that the quality of the products can be maintained. One of the first treatments in the fruit cold chain is evaporative cooling. In order to get an evaporative cooling system that has an even temperature distribution, it is necessary to make a spatial model when designing an evaporative cooling system using CFD (Computational Fluid Dynamics). The objectives of this research are: (1) design of direct flow type evaporative cooling systems and (2) test the performance of direct flow type evaporative coolers. This research method uses design methods, experiments, and computer simulations. The results showed the performance of the evaporative cooler system in the scenario with the roof on, the highest effectiveness value was 1.198, the highest approximation value was 2.832, and the highest range value was 4.589. In the scenario without a roof on the evaporative cooler system, the highest effectiveness value was 1.767, the highest approach value was 2.139, and the highest range value was 4.835. The CFD analysis in the scenario with a roof had the highest temperature value of 25.9 ° C and the lowest temperature of 21.9 ° C, while the CFD analysis in the scenario without roof had the highest temperature of 23.7 ° C and the lowest temperature of 20.4 ° C. Keywords: CFD, direct flow type,  evaporative cooler, quality, fruit

scholarly journals Evaluation of hydrodynamic behavior of biosand filters using computational fluid dynamics combined with the design of experiments

2021 ◽  
Author(s):  
Dominique Martins Sala ◽  
Ricardo Vicente de Paula Rezende ◽  
Sandro Rogério Lautenschlager
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Design Of Experiments ◽  
Urban Areas ◽  
Hydrodynamic Characteristics ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Ansys Cfx ◽  
Commercial Code ◽  
Biosand Filters

Abstract Biosand filters (BSFs) are widely used in rural and urban areas where access to drinking water is limited or non-existent. This study applies computational fluid dynamics in the assessment of hydrodynamic characteristics considering changes in the design of two BSF models to make construction options available to communities, without losing hydrodynamic efficiency. The commercial code ANSYS-CFX 20.1 together with a central composite design of experiments methodology to simulate the flow was used under different combinations of porosities, permeabilities, pipe diameters, and filter diameters and heights. These parameters were combined statistically from Statistica 13.3. Our results have shown that combining greater filter depths with smaller pipe diameters has played a key role in the BSF best performance, and the CAWST V10 model has performed better than HydrAid, with lower velocities and longer hydraulic retention times.

scholarly journals Filipino Farmers’ Awareness and Adaptation to Climate Change

2018 ◽  
Vol 1 (1) ◽  
pp. p8
Author(s):  
Genalyn Panganiban Lualhati ◽  
Shiela R. Lumbaga ◽  
Nazarene Carlo M. Pagaspas ◽  
Ma. Fatima N. Quimio
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Group Discussion ◽  
Conservation Agriculture ◽  
The Philippines ◽  
Vital Role ◽  
Adaptation To Climate Change ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
The Government

In the Philippines, agriculture plays a vital role because this sector can contribute a lot in the development of the economy. The value of documenting the agriculture growth annually and the problems encountered is being done by the government particularly, the Department of Agriculture (DA) to come up with interventions or programs to support the Filipino farmers, both in rural and urban areas. Hence, this study focused on determining the farmers’ awareness on climate change and their adaptation strategies in one municipality in Batangas Province. By employing mixed method through self-made questionnaire and focus group discussion, this study revealed that respondents are highly aware on climate change and the best strategy to use in adapting to climate change was conservation agriculture. The study offered recommendations that different authorities can employ to strengthen the farmer’s awareness and adaptation on climate change.

scholarly journals Vulnerability to Climate Change and Socio-Economic Factors: A Comparison of Selected Districts of Punjab

2021 ◽  
Vol 5 (1) ◽  
pp. 79-110
Author(s):  
Ali Raza ◽  
Muhammad Hassan Shahid ◽  
Aimen Tayyab ◽  
Usman Mustafa
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Jel Classification ◽  
Living Standard ◽  
Economic Factors ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Vulnerability To Climate Change ◽  
Vulnerability Score ◽  
Socio Economic Factors

This study analyzes ten districts of the province Punjab of Pakistan to investigate and compare the vulnerability of selected districts. Total Three sub-groups (socio-economic variables, adaptive capacity, bio-physical variables) are generated by using the data from Pakistan Social & Living Standard Measurement Survey (PSLM) and Pakistan Meteorological Department of the years 2014-15, to calculate total vulnerability. Using primary variables at the district level, this study determines each district’s rural and urban areas' total vulnerability score. The results show that few districts, e.g., Rawalpindi has 0.74 total vulnerability score out of 1, are highly vulnerable compared to other districts despite having a better socio-economic situation. On the other hand, few districts, like Multan, have a low vulnerability to climate change and socio-economic factors. Keywords: CO2, socio-economic, bio-physical, environment, Vulnerability. JEL Classification Codes: Q3, O13, P28.

scholarly journals The Influence of Gender Relations on Women’s Involvement and Experience in Climate Change Adaptation Programs in Bangladesh

SAGE Open ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 215824401881262 ◽  
Author(s):  
Mumita Tanjeela ◽  
Shannon Rutherford
Keyword(s):  
Climate Change ◽  
Climate Change Adaptation ◽  
Urban Areas ◽  
Climate Adaptation ◽  
Climate Change Impacts ◽  
Power Dynamics ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
History Of ◽  
Adaptation Practices

The nexus between poverty and climate change is a major concern, especially in a country like Bangladesh where lack of resources is a significant problem in both rural and urban areas. Climate change affects a wide demographic of the population in Bangladesh, and among those affected, women are more vulnerable to climate change impacts, as is evident from the history of climate-induced disasters in the country. Climate change increases women’s socio-economic vulnerabilities by directly impacting their family’s food security, water consumption, and livelihood. Hence, their roles and contributions are critical in responding through adaptation. Nonetheless, in Bangladesh, challenges remain to incorporate women as distinct actors and active agents in climate adaptation programs considering the gender power dynamics that exist. In this context, this study focuses on women’s contributions as individuals or as a group and reveals their significant influence in climate change adaptation practices.

Climate change governance: An analysis of the climate change legal regime in Kenya

2020 ◽  
Vol 22 (3) ◽  
pp. 170-183
Author(s):  
Meissy Janet Naeku
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Biodiversity Loss ◽  
Climate Justice ◽  
Legal Regime ◽  
Rural And Urban Areas ◽  
Climate Resilience ◽  
Rural And Urban ◽  
Starting Point ◽  
Legal Frameworks

Kenya’s climate change legal environment is considered progressive, with the country being one of the first in the African continent to enact robust climate law and policies that guide national and local action. The presence of a comprehensive legal regime is meant to provide an opportunity for the country to coordinate climate change issues in a more structured manner. Despite this, Kenya continues to grapple with challenges presented by climate change, which have increased the country’s vulnerability to biodiversity loss, ecosystem degradation and immense impacts on livelihoods and infrastructure in both rural and urban areas. Climate-related disasters and extreme events have plagued the most vulnerable communities, particularly with the most affected being Indigenous People and marginalised local communities. It is against this backdrop that the extent to which procedural mechanisms and the substantive legal frameworks produced needs to be reflected upon, to determine their interaction and feedback with the ongoing climate crisis and their sufficiency to adequately deliver climate justice across various levels of climate change law implementation. As a starting point, this article builds a comprehensive understanding on the existing climate laws in Kenya and explores how this translates to climate resilience building. The coherences, practicalities and implementation dynamics of the legal instruments are analysed to provide a clear picture of how the country responds to international, regional and national expectations and obligations. We argue that the adequacy of climate instruments in Kenya has not satisfactorily translated into climate resilience. Although most of the instruments are informed by sustainability principles for climate justice and resilience building, they still face diverse socio-economic and political dynamics that impede its effective implementation.

Management of minor ailments in primary schoolchildren in rural and urban areas

1996 ◽  
Vol 22 (3) ◽  
pp. 167-174
Author(s):  
J A Cantrill ◽  
B Johannesson ◽  
M Nicholson ◽  
P R Noyce
Keyword(s):  
Urban Areas ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Primary Schoolchildren ◽  
Minor Ailments
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