Download or read book Natural Convection Suppression in Solar Collectors written by Stephanus Johannes Maria Linthorst and published by . This book was released on 1985 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Methods of Reducing Heat Losses from Flat Plate Solar Collectors written by K. G. T. Hollands and published by University of Waterloo Research Institute. This book was released on 1976 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improvements to flat plate solar collectors for heating and cooling of buildings have been evaluated through three parallel studies. The first study has demonstrated suppression of free convection by a honeycomb at all angles of inclination. Reductions by a factor of 5 in the free convective heat loss are reported, and equations and charts permitting the rational design of honeycombs for convection suppression in solar collectors are presented. The second study has resulted in a precise, easily programmable set of equations for the free convective heat loss through the air gaps in flat plate solar collectors, for any angle of tilt. The third study has theoretically and experimentally demonstrated that the solar transmittance of a flat transparent cover for a solar collector can be very substantially increased by V-corrugating. Since V-corrugating should also decrease the free convective and radiant losses, substantial improvements in collector efficiency are predicted.
Download or read book Studies on Methods of Reducing Heat Losses from Flat Plate Solar Collectors Progress Report August 1 1974 January 31 1976 written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improvements to flat plate solar collectors for heating and cooling of buildings have been evaluated through three parallel studies. The first study has demonstrated suppression of free convection by a honeycomb at all angles of inclination. Reductions by a factor of 5 in the free convective heat loss are reported, and equations and charts permitting the rational design of honeycombs for convection suppression in solar collectors are presented. The second study has resulted in a precise, easily programmable set of equations for the free convective heat loss through the air gaps in flat plate solar collectors, for any angle of tilt. The third study has theoretically and experimentally demonstrated that the solar transmittance of a flat transparent cover for a solar collector can be very substantially increased by V-corrugating. Since V-corrugating should also decrease the free convective and radiant losses, substantial improvements in collector efficiency are predicted.
Download or read book Solar Collectors Energy Storage and Materials written by Francis DeWinter and published by MIT Press. This book was released on 1990 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar Collectors, Energy Storage, and Materials covers the materials and basic components needed for solar thermal energy systems. Using thermal performance and durability as the major criteria, the twenty six chapters emphasize the modeling and assessment of devices rather than their application or cost. Each part begins with an overview and concludes with an assessment of current issues and opportunities. The contributors have been careful to document failures as well as successes in materials research. This is the fifth volume in a series that distills the results of the intensive research on and development of solar thermal energy conversion technologies from 1975 to 1986. Francis de Winter is President of the Altas Corporation, Santa Cruz, California and a member of the Santa Cruz Energy Advisory Committee. Contents: Solar Collectors. Collector Concepts and Designs. Optical Theory and Modeling of Solar Collectors. Thermal Theory and Modeling of Solar Collectors. Testing and Evaluation of Stationary Collectors. Testing and Evaluation of Tracking Collectors. Optical Research and Development. Collector Thermal Research and Development. Collector Engineering Research and Development. Solar Pond Research and Development. Reliability and Durability of Solar Collectors. Environmental Degradation of Low-Cost Solar Collectors. Energy Storage for Solar Systems. Storage Concepts and Design. Analytical and Numerical Modeling of Thermal Conversion Systems. Testing and Evaluation of Thermal Energy Storage Systems. Storage Research and Development. Materials for Solar Technologies. Materials for Solar Collector Concepts and Designs. Theory and Modeling of Solar Materials. Testing and Evaluation of Solar Materials. Exposure Testing and Evaluation of Performance Degradation. Solar Materials Research and Development.
Download or read book Design and Performance of Large Solar Thermal Collector Arrays written by and published by . This book was released on 1985 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods for Reducing Heat Losses from Flat Plate Solar Collectors written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improvements to flat plate solar collectors for heating and cooling of buildings were investigated through two parallel studies. The first study, which deals with the free convective heat loss from V-corrugated absorber plate to a plane glass cover, has shown that, for the same average spacing, the free convective heat loss is greater for a V-corrugated absorber plate than for a plane absorber plate. However, provided the average spacing is large enough, the amount of increase is slight. The second study, which deals with the free convective heat loss in a honeycomb solar collector in which the honeycomb consists of a set of horizontal partitions, or slits, has shown that provided the solar collector is tilted to near vertical, such a honeycomb gives equivalent or superior free convective loss suppression than does a square-celled honeycomb having the same amount of material. Correlation equations for the free convective heat loss are given for both studies.
Download or read book Methods for Reducing Heat Losses from Flat Plate Solar Collectors written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study extends earlier studies by examining the effect of the emissivities of both the absorber plate and the glass cover on the honeycomb's ability to suppress free convection, and on the radiative and conductive heat transfer which takes place across the honeycomb in the absence of free convection. By means of heat transfer measurements on ten Mylar honeycombs, this study has shown that the effect of the above emissivities on the suppression of convection by the honeycomb is slight, and can probably be ignored. On the other hand, the measurements also showed that the effect of these emissivities on the non-convective heat transfer is substantial, but not nearly so large as would have been predicted by existing theories. To explain this latter result theories were developed which take into account the important coupling (ignored by previous theories) between the conductive and radiative modes of heat transfer. These new theories predict the measured heat transfer rates to with about +-15%, depending on the emissivities. The results of this study have direct application to evaluating solar collectors which combine a selective surface with a honeycomb.
Download or read book Forced and Natural Convection Studies on Solar Collectors for Heating and Cooling Applications written by Joseph T. Pearson and published by . This book was released on 1983 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Engineering of Thermal Processes written by John A. Duffie and published by John Wiley & Sons. This book was released on 2013-04-03 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt: The updated fourth edition of the "bible" of solar energy theory and applications Over several editions, Solar Engineering of Thermal Processes has become a classic solar engineering text and reference. This revised Fourth Edition offers current coverage of solar energy theory, systems design, and applications in different market sectors along with an emphasis on solar system design and analysis using simulations to help readers translate theory into practice. An important resource for students of solar engineering, solar energy, and alternative energy as well as professionals working in the power and energy industry or related fields, Solar Engineering of Thermal Processes, Fourth Edition features: Increased coverage of leading-edge topics such as photovoltaics and the design of solar cells and heaters A brand-new chapter on applying CombiSys (a readymade TRNSYS simulation program available for free download) to simulate a solar heated house with solar- heated domestic hot water Additional simulation problems available through a companion website An extensive array of homework problems and exercises
Download or read book Flat plate Solar Collectors with Slat Convection Suppression Devices written by Jeff G. Symons and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Transmittance of Convection Suppression Devices for Flat Plate Solar Collectors written by Alan William Dickerson and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of proposed standards for testing solar collectors and thermal storage devices written by James E. Hill and published by . This book was released on 1976 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Heat Transfer written by and published by Academic Press. This book was released on 1987-08-24 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heat Transfer
Download or read book NBS Technical Note written by and published by . This book was released on 1976-02 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Visualization of Natural Convection in Flat plate Solar Collectors written by Benjamin Okechukwu Okeke and published by . This book was released on 1979 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy Utilization written by Hafit Yüncü and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until very recently, energy supply of the world has been treated as being nearly inexhaustible. Nowadays about 90 percent of the energy used is obtained from non-renewable resources: oil, natural gas, coal and uranium. These resources are being used up at an alarming rate. To meet our demands we are now searching for new sources of energy. One of these new sources of energy is solar energy which will assume increasing importance. It is free but means must be developed to use it economically. Research is actively under way to reduce the storage cost of this low intensity energy and for the design of economical systems. The purpose of this Institute is to provide an international forum for the dissemination of information on solar energy utilization: fundamentals and applications in industry. This meeting is primarily a high level teaching activity. The subject is treated in considerable depth by lecturers eminent in their field. The other participants include scientists, engineers, and senior graduate students who themselves are involved in a similar research and who wish to learn more about current developments, as well as scientists from other areas who are planning to research on solar energy. The lectures are supplemented by informal discussions designed to encourage the free and critical exchange of ideas. A limited number of contributions are also included. This volume contains both basic and applied information contributed during the Institute. The editors appreciate the cooperation of Martinus Nijhoff Publishezsin making the proceedings widely available.
Download or read book Solar Energy Update written by and published by . This book was released on 1982 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
