Low Cost High Performance Solar Air Heating Systems Using Perforated Absorbers
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Author | : International Energy Agency. Solar Heating and Cooling Programme. Task 14 Air Systems Working Group |
Publisher | : |
Total Pages | : 146 |
Release | : 1999 |
Genre | : Solar collectors |
ISBN | : |
Author | : Robert Hastings |
Publisher | : Routledge |
Total Pages | : 293 |
Release | : 2013-10-18 |
Genre | : Architecture |
ISBN | : 1134256787 |
Active solar systems for air heating are a straightforward yet effective way of using solar energy for space heating and tempering ventilation air. They offer some unique advantages over solar water systems, can offer improved comfort and fuller use of solar gains than passive solar systems and are a natural fit with mechanically ventilated buildings. They can be economical, with short pay-back periods and can act not only as space heating or ventilation air heating but also for water pre-heating, sunshading, electricity generation (with hybrid photovoltaic systems) and can help induce cooling. This design handbook takes architects and building engineers through the process of designing and selecting an active solar system from the six types presented, optimizing the system using nomograms and curves, and finally dimensioning the components of the system. Tips are offered regarding the construction and how to avoid problems. The book will provide essential design information for all architects, building engineers and other building design professionals and all those concerned to reduce the environmental impact of buildings.
Author | : S. C. Bhatia |
Publisher | : CRC Press |
Total Pages | : 752 |
Release | : 2014-04-14 |
Genre | : Technology & Engineering |
ISBN | : 1782422730 |
The book is a complete treatise on renewable energy sources and also includes issues relating to biofuels. It aims to serve as a text for undergraduate and postgraduate students in relevant disciplines and a reference for all the professionals in the related fields.
Author | : Long Shi |
Publisher | : Springer Nature |
Total Pages | : 209 |
Release | : |
Genre | : |
ISBN | : 3031452186 |
Author | : |
Publisher | : |
Total Pages | : 560 |
Release | : 1979 |
Genre | : Solar air conditioning |
ISBN | : |
Author | : Robert Hastings |
Publisher | : Routledge |
Total Pages | : 225 |
Release | : 2014-05-01 |
Genre | : Architecture |
ISBN | : 1134256507 |
Thirty-five different buildings with successfully installed solar air systems are described and documented. The building types cover single family houses, apartment buildings, schools, sports halls, and industrial commercial buildings with six different configurations of solar air systems used. Each example building is described over several pages, with plans, performance details and illustrations provided. This is supplemented by a summary of the types of system used.
Author | : Pinakeswar Mahanta |
Publisher | : Springer Nature |
Total Pages | : 681 |
Release | : 2021-10-21 |
Genre | : Technology & Engineering |
ISBN | : 9811634971 |
This book comprises the select proceedings of the International Conference on Recent Trends in Developments of Thermofluids and Renewable Energy (TFRE 2020). The major topics covered include aerodynamics, alternate energy, bio fuel, bio heat transfer, computational fluid dynamics, control mechanism for constant power generation, and energy storage. The book also discusses latest developments in the fields of electric vehicles, hybrid power systems, and solar and renewable energy. Given the scope of its contents, this book will be useful for students, researchers, and professionals interested in the field of thermofluids and renewable energy resources.
Author | : |
Publisher | : |
Total Pages | : 566 |
Release | : 1979 |
Genre | : Solar air conditioning |
ISBN | : |
Author | : Edward K. Summers |
Publisher | : |
Total Pages | : 135 |
Release | : 2010 |
Genre | : |
ISBN | : |
Compared to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HD) Desalination cycle air heating offers significant performance gains for the cycle. Solar collectors can be over 40% of an air-heated HDH system's cost, thus design optimization is crucial. Best design practices and sensitivity to material properties for solar air heaters are investigated, and absorber solar absorptivity and glazing transmissivity are found to have the strongest effect on performance. Wind speed is also found to have a significant impact on performance. Additionally a well designed collector includes a double glazing, roughened absorber plates for superior heat transfer to the airstream. A collector in this configuration performs better than current collectors with an efficiency of 58% at a normalized gain of 0.06 K m2/W. Additionally, maintaining a constant air outlet temperature is also important for HD cycle performance. The use of built in phase change material storage (PCM) is found to produce consistent air outlet temperatures throughout the day or night. Using PCM directly below the absorber plate avoids heat transfer inefficiencies by using the working fluid to transfer energy to another storage system. Using a two dimensional finite element model it is found that a PCM layer of 8 cm below the absorber plate is sufficient to produce a consistent output temperature close to the PCM melting temperature with a time-averaged collector efficiency of 35%. However, this efficiency is significantly lower than a collector without storage, indicating a trade-off between efficiency and constant temperature heating, and suggesting alternative forms of energy storage might be more viable. Collectors that can deliver consistent outlet temperatures with good efficiency increase the performance of the HDH cycle. A prototype collector with storage is also built.
Author | : |
Publisher | : |
Total Pages | : 702 |
Release | : 1988 |
Genre | : Mechanics, Applied |
ISBN | : |