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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 38 for “"dehumidification"”.
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Desiccant dehumidification analysis
Desiccant dehumidification has been given increasing interest in the air conditioning industry. Compared with conventional vapor compression air conditioning systems, desiccant dehumidification saves energy by separating humidity control from temperature control and also improves the indoor air …
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DEHUMIDIFICATION OF GREENHOUSES IN COLD REGIONS
… The field experimental results proved that dehumidification was needed most of the year with high RH occurring from April to November. The heat exchangers and dehumidifiers controlled RH very well in winter, early morning and night in other seasons, and saved heating cost; however, in mild …
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Aerogel coated metal foams for dehumidification applications
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-08-30T14:44:52Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Nawaz_Kashif.pdf: 3672800 bytes, checksum: aba11b231fa7266a2a5495204b4f469b (MD5) Nawaz_Kashif.pdf: 6965739 bytes, …
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Heat pipe dehumidification for supermarket energy savings
… unit of a supermarket to increase the level of dehumidification of the inside air. This dehumidification is expected to reduce the energy consumption of the refrigeration system due to an improved efficiency of the heat transfer at the display case. This increase in efficiency will be due to …
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Numerical balancing in a humidification dehumidification desalination system
… and concentration balancing of a humidification dehumidification desalination system. The system operates similarly to the natural rain cycle. Seawater is heated, sprayed into an airstream to increase the air's humidity, then pure water is condensed out of the same stream in a separate unit. …
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Model predictive control for energy efficient cooling and dehumidification
… cooling system and to explore different dehumidification strategies that can be used in combination with the LLCS. This research significantly advances the knowledge of simulation and performance of the LLCS. The developed MPC algorithm enables a systematic study of primary factors …
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Membrane based dehumidification and evaporative cooling using wire mesh media
Membrane dehumidification and evaporative cooling applications have the potential to significantly improve the energy efficiency of air conditioning equipment. The use of wire mesh media in such membrane applications is feasible but has not been studied extensively. Therefore, the aim of this work …
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Room Temperature Ionic Liquid (Rtil) Membranes For Bio-Methane Dehumidification
… to become useable. Typically membrane-based gas dehumidification uses hydrophilic polymer membrane materials, such as polydimethylsiloxane (PDMS) and cellulose acetate (CA). The main problems with polymer dehumidification membranes are methane loss and the susceptibility of polymer materials to …
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A global strategy for the deployment of humidification-dehumidification technology
The world is suffering from a severe shortage of potable water. This effect is most noticeable in third-world regions, specifically in rural Africa and Asia. In these regions, clean water exhaustion has resulted in a myriad of negative affects such as diarrhea, infant death syndrome, hepatitis, and …
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Second law analysis and optimization of humidification-dehumidification desalination cycles
Humidification-Dehumidification (HD) desalination is a thermal distillation method that has the potential to be driven using solar heating. It is a promising technology that can potentially bring safe drinking water to people of the developing world. Surprisingly, few systematic efforts have been …
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Solar-driven humidification dehumidification desalination for potable use in Haiti
… such as solar-driven humidification dehumidification (HDH), are needed to help provide clean drinking water to people living in coastal areas. This thesis explores the question of whether the fills used in the humidifier of the HDH system, which allow for increased contact area …
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Extraction based thermodynamic balancing for a humidification dehumidification desalination plant
Humidification dehumidification (HDH) desalination is a thermal driven desalination technology. One of the main issues with HDH desalination is the high energy consumption involved. The energy efficiency of thermal desalination systems is given by a non-dimensional number known as the gained output …
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Dehumidification Effect by Coupling an Electroosmotic Material With a Desiccant Interface
An electroosmotic dehumidifier system is modeled in order to estimate the area (size), voltage and power needed per unit mass flow of water to be transferred from a region. The operation of an A/C system with and without the electroosmotic dehumidifier is compared and situations where savings is …
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Thermal design of humidification dehumidification systems for affordable and small-scale desalination
The humidification dehumidification (HDH) technology is a carrier-gas-based thermal desalination technique ideal for application in a small-scale system but, currently, has a high cost of water production (about 30 $/m³ of pure water produced). The present thesis describes fundamental contributions …
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Modelling, Simulation and Optimisation of Multistage Humidification and Dehumidification Desalination Plant Using Solar Energy. Performance Evaluation and Improvement of the Humidification-Dehumidification Desalination Process through Modelling, Simulation and Optimisation Techniques
… reason, a new method known as Humidification-Dehumidification (HDH) desalination process has been developed to address the challenge of water shortage. The aim of this research was to build the detailed mechanistic models with the increased capability to predict more accurately as well as to …
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Saturation curve analysis of humidification-dehumidification desalination systems and analysis of reversible ejector performance
… upon the efficiency of humidification-dehumidification (HDH) desalination systems are investigated. Secondly, ejector technologies are analyzed as a means of powering desalination systems thermally. Thermal desalination systems offer advantages over membrane technologies in terms of …
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Design of a mobile community level water treatment system based on Humidification Dehumidification desalination
… model of the technology. This Humidification Dehumidification (HDH) based technology aims to be applied at community level water supplies, bringing clean water to those countries with inadequate water infrastructure. The mobility provided by the model would allow the HDH based desalination …
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Development of a multi-stage bubble column dehumidifier for application in a hymidification dehumidification desalination system
… Research Laboratory is the Humidification Dehumidification desalination system, or HDH. In many ways HDH resembles the natural rain cycle for producing fresh water, in that sea water is evaporated from oceans into humid air that travels up into the atmosphere, before condensing and …
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Entropy generation minimization of a heat and mass exchanger for use in a humidification-dehumidification desalination system
… is particularly relevant in humidification-dehumidification desalination systems, where minimizing entropy generation per unit water produced is critical to maximizing system performance. Control volume techniques are first employed, and shown to be ill-suited to understanding why and how …
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Numerical fixed-effectiveness and fixed-area models of the humidification dehumidification desalination system with air extractions and injections/
The humidification dehumidification (HDH) desalination system can be advantageous in small-scale, off-grid applications. This system is very robust and can tolerate a wide range of feed salinities, making it a good candidate for treating produced water from hydraulically fractured natural gas …
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