Structural modifications on passive cooling tiles

Considering the rising global temperatures, it is becoming increasingly relevant to find sustainable solutions that help alleviate the exacerbated effects of climate change. The reliance on appliances like Heating, Ventilation, and Air Conditioning (HVAC) systems intensifies this vicious cycle of en...

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Main Author: Tripathi, Kartikeya
Other Authors: Hong Li
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2024
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Online Access:https://hdl.handle.net/10356/176708
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1767082024-05-25T16:49:40Z Structural modifications on passive cooling tiles Tripathi, Kartikeya Hong Li School of Mechanical and Aerospace Engineering ehongli@ntu.edu.sg Engineering Passive cooling Concrete GGBS Evaporative cooling Porous concrete Considering the rising global temperatures, it is becoming increasingly relevant to find sustainable solutions that help alleviate the exacerbated effects of climate change. The reliance on appliances like Heating, Ventilation, and Air Conditioning (HVAC) systems intensifies this vicious cycle of environmental degradation and necessitates alternative cooling methods. This research explores the development of a new concrete mixture, that maximizes porosity for concrete tiles, to leverage passive cooling techniques, particularly evaporative cooling, and acts as an alternative to traditional cooling methods. Conventional solutions to using concrete for passive cooling involved implementing external attachments, like reflectors and sheet coatings, or merely varying the geometry of concrete structures. However, these have been proven to be costly, and ineffective, when considering the context of tropical climates like Singapore, which have high humidity and solar irradiance. Hence, this study aims to address such limitations by modifying the very concrete mixtures used and by incorporating passive cooling directly into them. To create concrete tiles with a new composition in the mixture, this research varies the key ingredient proportions in the form of the water-to-cement (W/C) ratio and incorporates a Supplementary Cementitious Material: Ground Granulated Blast Furnace Slag (GGBS). An iterative process of varying these different parameters was followed, so as to find the optimum composition that maximizes porosity, water absorption, and cooling capabilities, while maintaining mechanical strength. Various samples were fabricated and tested under standard conditions by quantitatively measuring their Water Absorption %, Maximum Compressive Stress (MPa), and Temperature variations. The findings indicate the feasibility of creating concrete tiles that meet the requirements for porosity, water absorption, and strength, as well as the general trend for how these parameters might vary with different compositions of W/C Ratio and GGBS%. Overall, this research contributes to the development of sustainable cooling solutions and highlights the importance of incorporating concepts like Passive cooling into everyday life through the construction industry. The paper provides a base and framework for future research into optimizing W/C ratios, porosity, and mechanical strength such that cooling can be achieved. Additionally, the study also highlights the potential for future exploration, including long-term performance studies, integration with building designs, and incorporation of other sustainable cooling elements. Bachelor's degree 2024-05-23T00:33:51Z 2024-05-23T00:33:51Z 2024 Final Year Project (FYP) Tripathi, K. (2024). Structural modifications on passive cooling tiles. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/176708 https://hdl.handle.net/10356/176708 en A093 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
Passive cooling
Concrete
GGBS
Evaporative cooling
Porous concrete
spellingShingle Engineering
Passive cooling
Concrete
GGBS
Evaporative cooling
Porous concrete
Tripathi, Kartikeya
Structural modifications on passive cooling tiles
description Considering the rising global temperatures, it is becoming increasingly relevant to find sustainable solutions that help alleviate the exacerbated effects of climate change. The reliance on appliances like Heating, Ventilation, and Air Conditioning (HVAC) systems intensifies this vicious cycle of environmental degradation and necessitates alternative cooling methods. This research explores the development of a new concrete mixture, that maximizes porosity for concrete tiles, to leverage passive cooling techniques, particularly evaporative cooling, and acts as an alternative to traditional cooling methods. Conventional solutions to using concrete for passive cooling involved implementing external attachments, like reflectors and sheet coatings, or merely varying the geometry of concrete structures. However, these have been proven to be costly, and ineffective, when considering the context of tropical climates like Singapore, which have high humidity and solar irradiance. Hence, this study aims to address such limitations by modifying the very concrete mixtures used and by incorporating passive cooling directly into them. To create concrete tiles with a new composition in the mixture, this research varies the key ingredient proportions in the form of the water-to-cement (W/C) ratio and incorporates a Supplementary Cementitious Material: Ground Granulated Blast Furnace Slag (GGBS). An iterative process of varying these different parameters was followed, so as to find the optimum composition that maximizes porosity, water absorption, and cooling capabilities, while maintaining mechanical strength. Various samples were fabricated and tested under standard conditions by quantitatively measuring their Water Absorption %, Maximum Compressive Stress (MPa), and Temperature variations. The findings indicate the feasibility of creating concrete tiles that meet the requirements for porosity, water absorption, and strength, as well as the general trend for how these parameters might vary with different compositions of W/C Ratio and GGBS%. Overall, this research contributes to the development of sustainable cooling solutions and highlights the importance of incorporating concepts like Passive cooling into everyday life through the construction industry. The paper provides a base and framework for future research into optimizing W/C ratios, porosity, and mechanical strength such that cooling can be achieved. Additionally, the study also highlights the potential for future exploration, including long-term performance studies, integration with building designs, and incorporation of other sustainable cooling elements.
author2 Hong Li
author_facet Hong Li
Tripathi, Kartikeya
format Final Year Project
author Tripathi, Kartikeya
author_sort Tripathi, Kartikeya
title Structural modifications on passive cooling tiles
title_short Structural modifications on passive cooling tiles
title_full Structural modifications on passive cooling tiles
title_fullStr Structural modifications on passive cooling tiles
title_full_unstemmed Structural modifications on passive cooling tiles
title_sort structural modifications on passive cooling tiles
publisher Nanyang Technological University
publishDate 2024
url https://hdl.handle.net/10356/176708
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