2 edition of An analysis of a liquid desiccant dehumidifier regenerated with waste or solar power found in the catalog.
by Massachusetts Institute of Technology
Written in English
advances in Desiccant-Based Dehumidification Unlike “cold-coil” dehumidification, which removes moisture from the air by condensing it on a cold surface, desiccant dehumidification relies on adsorption or absorption. This EN reviews recent advances in the application of desiccant dehumidification in commercial and institutional buildings. • Desiccant dehumidifiers: In this type of dehumidifier, moist air is drawn through a filter made of a desiccant material (a chemical drying agent). The desiccant traps the moisture, which then Author: Glenda Taylor.
Low grade heat can be utilized to regenerate the desiccants [7 –10] such as solar energy and waste heat. The dehumidifier is one of the essential parts of the system, where the air is dehumidified by a liquid desiccant. Its performance greatly influences the performance of Cited by: 7. A dehumidification and regeneration system is described. A liquid desiccant solution may be used to extracts moisture from ambient air in a first location within a dehumidifier with a base. A regenerator in fluid communication with the dehumidifier may extract moisture from the liquid desiccant solution. One or more pumps may circulate the liquid desiccant through the by:
Unsure whether to buy a compressor or a desiccant dehumidifier? This short video will help you decide which is best for you. for more advice please visit . The size of this rotor and the speed at which it rotates varies depending on the unit’s specifications for target humidity and air volume. Most of the cost of desiccant dehumidifiers is in the desiccant wheel. The blower on a desiccant moves the air through the desiccant wheel. Most portable desiccant dehumidifiers use a single blower.
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An analysis of a liquid desiccant dehumidifier regenerated with waste or solar power. An analysis of a liquid desiccant dehumidifier regenerated with waste or solar power.
by Vorthman, Robert George. Publication date Topics Mechanical engineering Publisher Massachusetts Institute of TechnologyPages: constructed and tested a grain drying system using liquid calcium chloride with annual solar regeneration of the desiccant.
Farmer et al. () studied direct solar paunch drying, supplemented by solar regenerated desiccant. The prospect of using desiccants for dehumidification is.
Qiu, G., et al, ‘Experimental investigation of a liquid desiccant cooling system driven by flue gas waste heat of a biomass boiler’, IJ Low-Carbon Technologies, Jain, S., et al, ‘Performance analysis of liquid desiccant dehumidification systems’, IJ Refrigeration, vol issue 5, August– The environmental air was introduced into the dehumidifier cocurrently flowing with the liquid desiccant, and the liquid desiccant was sprayed on the top of the packing material.
The air-to-liquid mass flow ratio was controlled in a range of to As the moisture was absorbed from air by the TEG solution, the solution was by: 4. Desiccant based air-conditioning systems offers a promising alternative to vapour compression refrigeration air-conditioning systems especially, under conditions involving high latent loads.
This technique allows the use of low-temperature industrial waste heat or solar power. A solar-regenerated liquid desiccant ventilation pre-conditioning system has been installed and experiments were carried out for a period of nine months covering rainy, cold, and hot seasons in a.
Liquid desiccant systems have also been suggested as a way to shift latent loads to times when energy is cheaper and/or renewable or waste energy is abundant. Latent load shifting can be accomplished with liquid desiccant, which is a relatively inexpensive form of storage.
Liquid. Kathabar liquid desiccant dehumidification systems operate on the principle of chemical absorption of water extracted by the Kathabar dehumidifier is modulated to exactly match the load by controlling coolant flow flow capacities, heat sources, space limitations and power requirements determine which Liquid Desiccant System will provide File Size: 1MB.
Liquid desiccant cooling systems are one of the alternatives in this regard which is not only environmental friendly (no use of any refrigerant which deplete ozone layer) but at the same time make a good use of alternative sources of energy like, solar, biomass by: Artificial neural network analysis of liquid desiccant dehumidification system Article in Energy 36(2) February with 91 Reads How we measure 'reads'.
There are solid and Liquid(solution) desiccant martials. lithium chloride, calcium chloride, lithium bromide, Silica gel, and natural zeolite and activated ammonia, are the most frequently utilized desiccants, by using the heat energy to evaporate the excessive moisture from the desiccant solution, the desiccant dehumidifier can be regenerated.
Advanced Commercial Liquid-Desiccant Technology Development Study Andy Lowenstein AIL Research, Inc. Steven Slayzak, Joe Ryan, and Ahmad Pesaran National Renewable Energy Laboratory National Renewable Energy Laboratory Cole Boulevard Golden, Colorado A national laboratory of the U.S.
Department of Energy Managed by Midwest File Size: 2MB. Desiccant systems find applications in a very large variety of industrial and daily usage products including the new HVAC installations. An overview of liquid desiccant technology has been presented in this paper along with a compilation of experimental performance data of liquid desiccant dehumidifiers, empirical dehumidification effectiveness and mass transfer correlations in a useful and Cited by: Robert George Vorthman has written: 'An analysis of a liquid desiccant dehumidifier regenerated with waste or solar power' -- subject(s): Mechanical engineering.
Mazzei et al.  compared the operating costs of the desiccant and traditional systems using the computer simulation tool and predicted operating cost savings of about 35% and a reduction of thermal power up to 52%.
In the case were the desiccant would be regenerated by waste heat, the authors projected operating costs savings reaching up to Author: Nanda Kishore P.V.R, Dilip D.
How desiccant dehumidifiers work and their benefits compared to other types of dehumidifiers such as compressor dehumidifiers. Ionmax dehumidifiers are available in Australia and New Zealand, and. This paper presents the experimental tests on the chemical dehumidification of air by a liquid desiccant and desiccant regeneration carried out in an absorption/desorption tower with random packing.
The experimental set-up is fully described together with measurements, Cited by: Siebe, D.A., et al., “Heat and Mass Transfer Characteristics of Open-Flow Liquid Desiccant Solar Regenerators,” Solar Energy Research Lab, Arizona State University, Report CR Cited by: The Primary Research on Liquid Desiccant Dehumidifier with Cooling Capacity Using Compressible Heat Pump System AnMin WU1,ChunLin LI2,HeFei ZHANG3 1Institute of Air-Conditioning & Solar Energy, School of Dynamics and Energy, Northwesern Polytechnical University, Xi’an, ShaanXi, ,China Phone E-mail:[email protected] by: 1.
Principles of Liquid Desiccant. Alfa Laval Kathabar liquid systems utilize a liquid absorbent known as Kathene. This absorbent which is primarily composed of water and lithium chloride salt will dehumidify or humidify its surrounding environment in order to maintain equilibrium.
A compressor based dehumidifier uses a compressed refrigerant to cool metal coils (evaporator coils). The hot humid air that enters the dehumidifier condenses on these cool coils.
This leaves the air that exhausts out of the dehumidifier still warm but drier than when it entered. Desiccant dehumidifiers work quite differently. Instead of using condensation (on Read More».There are two primary types of desiccant dehumidification: desiccant wheels and liquid desiccants.
Learn more about when to use each one. Emergency: Liquid Desiccant System - Liquid Desiccant Unit Hourly Operating Cost $ $ Annual Operating Time (hours) 5, 5, Annual Operating Cost $25, $18, Annual Operational Savings None $7, Liquid Desiccant equipment was less expensive than the more energy-intensive outdoor air unit it .