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 36 for “"desiccant"”.
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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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Regenerated desiccant devices for cooling stored grains
… augmentation of ambient aeration, which uses a desiccant device placed in a heat exchanger to produce the air that has a sufficiently low enthalpy to cool grains to safe storage temperatures.
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Heat and Mass Transfer Characteristics of Desiccant Polymers
Desiccant-enhanced air conditioning equipment has exhibited both the capability to improve humidity control and the potential to save energy costs by lowering the latent energy requirement of the supply air stream. The resulting increasing popularity of desiccant-enhanced air conditioning systems …
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Anaerobic storage of corn with and without a desiccant
Thesis (M.S.)--Michigan State University. Dept. of Crop Science, 1966
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Study of Liquid Desiccant Air-Conditioning for High Performance Greenhouses
… loads experienced by a greenhouse. Liquid desiccant air-conditioning (LDAC) have been found to provide high latent cooling capacities, which is perfect for the application of a humid greenhouse microclimate. TRNSYS simulations were undertaken to study the feasibility of two liquid desiccant …
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Analysis of a Flat-Plate, Liquid-Desiccant, Dehumidifier and Regenerator
… isothermal and non-isothermal flat-plate liquid-desiccant dehumidifiers and regenerators was developed and implemented. The two-dimensional model takes into account the desiccant, water and air flow streams. A parametric analysis was performed to evaluate the influence of some of the most …
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Evaluation of Heat Rejection Strategies for Liquid Desiccant Air-Conditioning Systems
… One promising technology is the use of a Liquid Desiccant Air-Conditioning (LDAC). An evaporative cooling tower (ECT) was used as a cooling device to reject the heat from a LDAC at Queen’s University. Investigation of the ECT showed significant power consumption and ineffective operation in humid …
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Solar desiccant evaporative cooling with multivalent use of solar thermal heat
Solar DEC (Desiccant and Evaporative Cooling) air-conditioning is a renewable technological approach to the future air-conditioning of buildings driven with solar-thermal heat. The principal acceptance of solar airconditioning has led to system prototypes mainly across Europe, however the diffusion …
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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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Design and development of a novel liquid desiccant air-conditioning system
… (DECAL) system is a novel high efficiency liquid desiccant air-conditioning (LDAC) system which runs primarily on thermal energy rather than electricity. It is designed for residential cooling in hot and humid climates where demand is growing rapidly and incumbent direct-expansion system …
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Selection of the liquid desiccant in a run-around membrane energy exchanger
In this thesis, several possible liquid desiccants (aqueous solutions of LiCl, LiBr, MgCl2 and CaCl2) are investigated to find the most appropriate working fluid to be used in a run-around membrane energy exchanger (RAMEE). The liquid desiccant is one of the main components of the RAMEE and …
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Improved Desiccant Coatings for Heat and Water Vapour Transfer on the Matrix Surfaces of Air-To-Air Regenerative Wheels
… the feasibility of using agglomerated desiccant particle coatings to improve the performance of regenerative wheels used in HVAC air-to-air heat and moisture exchange and energy recovery applications. Desiccant particles coated on wheels lose most of their water vapor sorption capacity …
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Analyzing the effect of pressure drop on flow rate of hot water in the intercoolers assembly of the Lean Operation Rotary Adsorption Cooling System
… a readily available low-grade heat and using desiccant wheel to provide a cooling power, was tested this semester. Specifically, this experimental study focuses on the pressure drop of hot water in the two intercoolers that are part of the desiccant wheel module and the flow rate. The measured …
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Humidity control in different building applications; restaurant and operation theatre
… this study that consists of economizer damper, desiccant wheel and heat pipe heat exchanger (HPHX).The economizer damper analysed base on fresh air intake requirement for ventilation purposes on standard ASHRAE 55 (2010). Manufacturing software by Novelaire and HPC were used to perform the …
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Studies on the Degradation of Desiccants in Temperature Swing Adsorption Processes and the Adsorptive Separation of Sulfur Compounds from Industrial Fluids
… continuously for several years. The study on desiccant degradation is an essential addition to the field. Nevertheless, little research is available investigating what factors influence desiccant degradation. The most common technology for removing H2S and CO2 from industrial fluids is aqueous …
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Thermoresponsive polymer desiccants for water harvesting
… 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 unexplored. This thesis details efforts into …
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Thermoresponsive polymer desiccants for water harvesting
… 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 unexplored. This thesis details efforts into …
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An experimental apparatus for the measurement of moisture permeability of building materials
… system using distilled water and molecular sieve desiccant humidifies or dries the chamber air as needed. The moisture transfer rate across the specimen is determined gravimetrically: the desiccant column is weighed to measure its change in mass as a result of moisture diffusion across the …
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EXPERIMENTAL CHARACTERIZATION OF CRYSTALLIZATION FOULING IN LIQUID-TO-AIR MEMBRANE ENERGY EXCHANGERS
… transfer both heat and moisture between liquid desiccant and air streams, while preventing cross-contamination between the fluids. However, the porous membranes used in LAMEEs are prone to crystallization fouling from liquid desiccants, and this may compromise the performance of LAMEEs. The …
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