Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 47 for “"Water Harvesting"”.
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Tree-Inspired Water Harvesting
… we were motivated to develop novel devices for water harvesting inspired by natural trees, and to understand their collection efficiency and working principles. We accomplished that with scale-model and large-scale fog harps, floating leaves, and synthetic trees. Fluids mechanics, physics, and …
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Thermoresponsive polymer desiccants for water harvesting
Atmospheric water is a ubiquitous yet underutilised source of potable water. Polymeric desiccants are a particularly promising candidate for atmospheric water harvesting given their adaptability and scalability. However, the relative nascency of the field leaves many classes of polymers yet …
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Thermoresponsive polymer desiccants for water harvesting
Atmospheric water is a ubiquitous yet underutilised source of potable water. Polymeric desiccants are a particularly promising candidate for atmospheric water harvesting given their adaptability and scalability. However, the relative nascency of the field leaves many classes of polymers yet …
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Tailoring Metal–Organic Frameworks for Water Harvesting
Water sorbents enable technologies that have the potential to mediate water insecurity, meet an increasing energy demand, and push towards sustainability. Metal-organic frameworks (MOFs) are candidate sorbents for such technologies as a direct result of their inherent chemical modularity – …
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Multi-stage adsorption-based atmospheric water harvesting
Atmospheric water harvesting (AWH) is the capture and collection of water that is present in the air either as vapor or small water droplets. Adsorption-based AWH uses adsorbent materials to collect water vapor from the air, the advantage being that the adsorbents can be regenerated by low-grade …
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Sorption-based atmospheric water harvesting: from atoms to applications
Thirteen thousand trillion liters of water in the atmosphere is a natural resource found anywhere on the earth, and available to anyone. Sorption-based atmospheric water harvesting (SAWH) is the extraction of water vapor using sorbent materials across a broad spectrum of relative humidity, which …
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Development of adsorption-based atmospheric water harvesting and thermal energy storage technologies
… can be used to efficiently harvest fresh water from the atmosphere and to store thermal energy for climate control. Recent advances in porous adsorbents such as metal-organic frameworks (MOFs), with high sorption capacity and low regeneration temperature requirements, allow us to …
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System-level Design, Fabrication, and Optimization of Sorbent-based Atmospheric Water Harvesting Devices
Sorption-based atmospheric water harvesting (SAWH) has been demonstrated as a promising avenue to addressing the increasing problem of water scarcity, especially in arid inland regions where alternative technologies are limited. However, current sorbent materials are often limited in their …
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Thermodynamic modeling and design of high-performance adsorption-based atmospheric water harvesting devices
Water scarcity is a grand global challenge since more than two-thirds of world’s population is experiencing water shortage. Atmospheric water harvesting (AWH) addresses this challenge by enabling decentralized freshwater supply in water-stressed and infrastructure-limited areas. Adsorption-based …
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Understanding the Limits of Coupled Condensation and Desorption in Sorption-Based Atmospheric Water Harvesting (SAWH) Devices
Access to clean water is a serious challenge around the world, with almost 2/3 of the global population experiencing water scarcity at some point during the year, especially in dry regions. One solution to this problem is sorbent-based atmospheric water harvesting (SAWH) due to its ability to …
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Atmospheric Water Harvesting: An Experimental Study of Viability and the Influence of Surface Geometry, Orientation, and Drainage
<p>Fresh water collection techniques have gained significant attention due to global dwindling of fresh water resources and recent scares such as the 2011-2017 California drought. This project explores the economic viability of actively harvesting water from fog, and techniques to maximize water …
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Using Open Space Design and Water Harvesting as a Strategy to Bring Hydrological and Social Benefits to Dense Cities
… is finding solutions for meeting the nonpotable water use demand by applying water harvesting while also creating open green spaces for residents in urban communities. The design thesis explored the level of benefits that can be achieved by harvesting water from impervious surfaces like rooftops …
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Effect of sodium catchments on soluble soil salts, leaf ion concentration, and the yield of fruit in a water harvesting system.
… was applied at a rate of.5 kg m⁻² to Cropped Water Ways (CWW). Four peach cultivars planted in single rows with 2, 3 and 4 meter spacing in one cropped waterway, were selected for this study. Soil samples were collected at 20 cm intervals to a total depth of 160 cm. Twelve sites were selected …
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Indigenous Knowledge and Sustainable Development: The Case of Rwanda's Agricultural Sector.
… with a focus on Rwanda's Land, Husbandry water harvesting and Hillside irrigation (LWH) project as a unit of analysis. Furthermore, the research assessed whether the Rwandan water harvesting, and irrigation IK played a role in the overall project conceptualization, design and …
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Pressure Swing Assisted Desorption for Atmospheric Water Collection
Ensuring water equity is an urgent and challenging issue in the light of climate change, global conflict, and socioeconomic disparities. Atmospheric water harvesting provides a promising option to collect water from the air, even in considerably dry conditions (RH < 40%), expanding the reach of …
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Feasibility of translating earthships in Africa and future design considerations
… passive solar buildings with renewable power, water harvesting, and sewage systems, designed to be off grid with minimal reliance on public utilities, and use recycled and natural materials. Due to high initial capital cost and resources needed, earthships have primarily been implemented in …
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Design and Optimization of Adsorption Systems for Automotive Climate Control
… direct air carbon capture, to atmospheric water harvesting, to thermal energy storage. Decades of research and development have led to the optimization of adsorption materials to customize them for a specific application by tailoring their affinity for particular molecules, among other …
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Agricultural Spray Dynamics for Automated Pollination of Kiwifruit
… anatomy and models for uid capture used in water harvesting applications, which reduce the problem to drops impacting bers/cylinders. The appropriateness of this analogy is made evident through high speed images of drop impacts with blossoms, and by comparing simulations to pollen capture …
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