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Tuesday, August 4, 2020 | History

2 edition of Desiccant cooling with solar energy found in the catalog.

Desiccant cooling with solar energy

Gerrit HoМ€fker

Desiccant cooling with solar energy

by Gerrit HoМ€fker

  • 98 Want to read
  • 4 Currently reading

Published by De Montfort University in Leicester .
Written in English


Edition Notes

Thesis (Ph.D) - De Montfort University, Leicester 2001.

StatementGerrit Höfker.
ContributionsDe Montfort University.
ID Numbers
Open LibraryOL18561747M

In desiccant cooling, the air is first dehumidified before its temperature is reduced by evaporative cooling. Desiccant materials remove moisture from humid air, when air is passes through the of solid desiccants offer several designs and performance advantages over liquid desiccants, when solar energy is used for regeneration. @article{osti_, title = {Desiccant cooling using unglazed transpired solar collectors}, author = {Pesaran, A A and Wipke, K}, abstractNote = {The use of unglazed solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are lower in cost than conventional glazed flat-plate collectors.

“Our vision combines several technologies currently in development at KAUST: energy-efficient, transparent solar panels; low-energy desiccant cooling; salt-tolerant edible plants; and algal biotechnology.” Coastal locations in the MENA region have ample access to .   She had material on desiccant cooling technology published in the proceedings of the ISE Solar World Congress in , and her previous book (Solar Technologies for Buildings, published by Wiley) is a recommended title on the Green Building engineering course at Canada's leading research-intensive university, Queens.

Whether using passive solar cooling to reduce the sun's impact on your home, solar thermal energy for solar absorption cooling or desiccant cooling, or PV panels to power conventional air conditioners, using a solar cooling system to keep your home cool during the hot summer months makes a . DESICCANT COOLING IN COMBINATION WITH SOLAR ENERGY - TECHNOLOGY AND PILOT PLANT WITH SOLAR ENERGY AS HEAT SOURCE Hans-Martin Henning, Carsten Hindenburg Fraunhofer Institute for solar energy systems ISE, Oltmannsstr. 5, D Freiburg, Germany +49//, +49//, [email protected]


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Desiccant cooling with solar energy by Gerrit HoМ€fker Download PDF EPUB FB2

Desiccant cooling is an open cycle which uses a desiccant wheel and thermal wheel to achieve both cooling and dehumidification. Solar thermal energy or waste heat can be used to re-activate the desiccant. The thermal wheel is a rotary heat exchanger positioned within the supply and exhaust air streams in order to recover the heat energy, and the desiccant wheel works in a similar way.

T.S. Ge, J.C. Xu, in Advances in Solar Heating and Cooling, Abstract. Desiccant cooling systems operate on the principle of adsorption dehumidification and evaporative cooling.

Such systems use a natural working fluid and can be driven by low-grade thermal energy, which makes them especially useful for integration with solar collector systems. Desiccant cooling is an open cycle which uses a desiccant wheel and thermal wheel to achieve both cooling and dehumidification.

Solar thermal energy or waste heat can be used to re-activate the desiccant. The thermal wheel is a rotary heat exchanger positioned within the supply and exhaust air streams in order to recover the heat energy, and.

Hybrid solar-powered rotary desiccant wheel cooling systems have a much wider application range because auxiliary cooling power is provided, and the hybrid systems can provide great energy savings compared with the vapor compression systems.

Many solar cooling technologies such as solar absorption, solar adsorption, desiccant, and ejector systems have been studied by researchers. Among these technologies, solar absorption is the most widely used technology with 59% of the installed systems in Europe against 11% for solar adsorption and 23% for desiccant cooling.

Many Author: Salman Ajib, Ali Alahmer. G.G. Maidment, A. Paurine, in Comprehensive Renewable Energy, Desiccant Cooling System.

In a desiccant cooling system, air can be passed over common solid desiccants such as zeolite or silica gel for dehumidification and to sensibly cool the air well below ambient temperature conditions in some form of evaporative cooling process.

Also, liquid dessicants such as lithium or. Paradoxically, solar air-conditioning can contribute significantly to the alleviation of the problem. This book includes fully detailed treatment of the theory and applications of the techniques involved: vapour absorption systems, solar absorption systems, solar absorption cooling, radiative cooling and desiccant cooling.

Part of the Green Energy and Technology book series (GREEN) Abstract Tu R, Liu XH, Jiang Y () Performance analysis of a two-stage desiccant cooling system. Appl Energy – CrossRef () Application of zeolitic materials prepared from fly ash to water vapor adsorption for solar cooling. Appl Energy – CrossRef.

• desiccant/adsorption cycling; • ejector cooling and heat pumps; and • solar concentration and thermoelectric units. The book shows how innovative solar systems applicable to rural and urban buildings can be analysed and demonstrates the successful implementation of.

Solar cooling is a system that converts heat from the sun into cooling that can be used for refrigeration and air conditioning. A solar cooling system collects solar power and uses it in a thermally driven cooling process which is in turn used to decrease and control the temperature for purposes like generating chilled water or conditioning air for a building.

Principles of desiccant cooling [4] nections. The solar system consists of solar collectors, a. Principles of desiccant cooling. Desiccant cooling technology consists in dehumidifying the in-take air stream by passing it from beginning to end a desiccant material and then drying the air to the desired indoor temperature.

Download Solar Energy For Cooling And Refrigeration complete Project Report. A new area of interest is the use of desiccant wheel technology for solar powered air conditioning. This website is created solely for the engineering students and graduates to download an engineering e-books.

Solar Cooling, Dehumidification and Air Conditioning Technion – Israel Institute of Technology 3 Demand for A/C associated with increased demand for primary energy • Solar Cooling can Alleviate the Problem • Closed-cycle systems: Absorption, Adsorption, Jet-cooling.

• Open-cycle systems: Liquid desiccant. DAI Yanjun () is a full professor (since ), and head of the department of power and energy engineering (since ), Shanghai Jiao Tong University, P. China, as well as Vice director of engineering research center of solar energy, Ministry of Education, China (since ).His research interests involve solar heating and cooling, solar buildings, desiccant dehumidification and.

Generally, the working of desiccant system is run by the thermal energy and this energy can be obtain from heat sources of low-temperature and it’s a renewable type of energy and in a liquid desiccant system this solar energy can be purpose to regenerate the desiccant solution.

include solar energy, waste heat, and natural gas heating, and the possibility of energy recovery within the system. In the case of a liquid desiccant cooling being used, the heat of regeneration is furnished. A hybrid solid desiccant cooling system (SDCS), which combines a solid desiccant system and a vapor compression system, is considered to be an excellent alternative for commercial and residential air conditioning systems.

In this study, a solar-assisted hybrid SDCS system was developed in which solar-heated water is used as an additional heat source for the regeneration process, in addition to. Solid Desiccant Cooling. The main components of a solar assisted desiccant cooling system are shown in the figure on the right.

The basic process in providing conditioned air may be described as follows. Warm and humid air enters the slowly rotating desiccant wheel and is dehumidified by adsorption of water ().

This book, based on the research experience and outcomes of a group of international contributors, addresses a range of advanced energy efficiency technologies and their applications in solar heating, cooling and power generation, while also providing solutions for tackling recurring low efficiency problems in today’s systems.

The heat required to regenerate the desiccant can be supplied from low-temperature sources such as waste heat or solar energy [6,7,10]. Utilising solar energy for this application is particularly interesting because the greatest demand for cooling occurs during times of highest solar insolation.

Approach: The performance analysis of desiccant cooling with solar energy are analyzed. The system was designed, constructed and tested in National University of Malaysia.

This system consist of a.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-R .Desiccant cooling systems are basically open cycle systems, using water as refrigerant in direct contact with air.

The thermally driven cooling cycle is a combination of evaporative cooling with air dehumidification by a desiccant material. For this purpose, liquid or solid materials can be used.