3 edition of Solar heating, radiative cooling and thermal movement found in the catalog.
Solar heating, radiative cooling and thermal movement
William C. Cullen
by [U.S. Dept. of Commerce, National Bureau of Standards], for sale by the Superintendent of Documents, U.S. Govt. Print. Off. in Washington
Written in English
|Series||United States. National Bureau of Standards. Technical note, 231, NBS technical note ;, 231.|
|LC Classifications||QC100 .U5753 no. 231|
|The Physical Object|
|Pagination||ii, 33 p.|
|Number of Pages||33|
|LC Control Number||64060306|
In addition to the solar thermal technologies above, technologies such as solar photovoltaic modules can produce electricity, and buildings can be designed to capture passive solar heat. Solar energy is considered a renewable resource because it is continuously supplied to the Earth by the sun. Standard solar cells heat up under sunlight. The resulting increased temperature of the solar cell has adverse consequences on both its efficiency and its reliability. We introduce a general approach to radiatively lower the operating temperature of a solar cell through sky access, while maintaining its solar absorption. We first present an ideal scheme for the radiative cooling of solar cells.
driven (and solar absorption) cooling exacerbate the urban heat island problem, which arises mainly from the combination of low urban albedos and high thermal masses. The desiccant is regenerated by using solar heat to dry it out. Absorption chiller systems, the most common solar cooling systems, use solar water heating collectors and a thermal-chemical sorption process to produce air-conditioning, without using electricity. The process is nearly identical to that of a refrigerator, only no compressor is used.
Heating water with the sun is a practice almost as old as humankind itself. Solar Water Heating, now completely revised and expanded, is the definitive guide to this clean and cost-effective technology.. Beginning with a review of the history of solar water and space heating systems from prehistory to the present, Solar Water Heating presents an introduction to modern solar energy systems /5(72). Earth's longwave thermal radiation intensity, from clouds, atmosphere and surface. Radiative cooling is the process by which a body loses heat by thermal radiation. As Planck's law describes, every physical body spontaneously and continuously emits electromagnetic radiation.
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Get this from a library. Solar heating, radiative cooling and thermal movement: their effects on built-up roofing. [William C Cullen; United States. National Bureau of Standards.]. The system performance as well as the indoor thermal comfort is analyzed.
Finally, some information on design, control, and operation of hybrid cooling and heating systems are included. The study also refers to a comparison of various solar thermal-powered cooling systems, and to some use suggestions of these systems.
When sunlight heats one or more collectors sufficient for heating, sensors and a controller activate the pump to circulate either water from the storage tank or antifreeze solution. When antifreeze solution is used, the solar heat is transferred to water in the storage tank through a heat exchanger (HX).
Photonic thermal management plays a crucial role in the thermal behavior of outdoor energy consumption by the functions of solar heating and radiative cooling. Here, we provide a conceptive design of self-adaptive photonic thermal management by tunable radiative cooling and solar heating, which are determined by the absorption Solar heating of the Author: Wanlin Wang, Zhongping Zhao, Qixuan Zou, Binbin Hong, Wang Zhang, Guo Ping Wang.
Climate change is becoming more important day after day. The main actor to decarbonize the economy is the building stock, especially in the energy used for Domestic Hot Water (DHW), heating and cooling. The use of renewable energy sources to cover space conditioning and DHW demands is growing every year.
While solar thermal energy can cover building heating and DHW demands, there is no Author: Sergi Vall, Marc Medrano, Cristian Solé, Albert Castell. Solar Heating and Cooling Systems: Fundamentals, Experiments and Applications provides comprehensive coverage of this modern energy issue from both a scientific and technical level that is based on original research and the synthesis of consistent bibliographic material that meets the increasing need for modernization and greater energy efficiency to significantly reduce CO2 emissions.
Solar Energy in Buildings presents solar radiation fundamentals and their applications in buildings, supported by theoretical analysis and results of original simulation studies in solar energy availability, collection, and conversion for both active and passive use.
In-depth coverage of energy balance and heat transfer in building envelopes is supported by the inclusion of calculations and. range of thermal radiation from terrestrial bodies at typical temperatures.
Terrestrial bodies can therefore cool down by sending thermal radiation into outer space. Both nighttime [14–23] and daytime [15,24–27] radiative cooling has been studied previously.
Most of these studies sought to achieve an equilibrium temperature that is below. Although some solar reflecting materials were reported, daytime cooling below the ambient temperature was not achieved as the absorbed solar energy exceeded the emitted energy by thermal radiation.
25, 26 It was only the recent demonstrations where the use of advanced nanophotonics led to daytime radiative cooling well below the ambient Cited by: Radiative sky cooling cools an object on the earth by emitting thermal infrared radiation to the cold universe through the atmospheric window (8–13 μ m).
It consumes no electricity and has great potential to be explored for cooling of buildings, vehicles, solar cells, and even thermal power plants.
Radiative sky cooling has been explored in the past few decades but limited to Cited by: With introductory sections for each technology described, material includes chapters on: geothermal energy use for the heating and cooling of buildings; a chapter on electrically driven heat pumps/chillers; material on night radiative cooling, photovoltaic thermal collectors, temperature modelling and thin film photovoltaic modelling.
This solar heating combisystem is in Guajiayu Village of the Pinggu District in Beijing. There are 71 houses in the village in which solar heating combisystems have been installed.
Figure shows this village. The range of building area of each house where installed solar heating system is 90 ～ m 2 and the solar collector areas and volumes of water tanks in different houses range 1. The thermal performance of roof-mounted cooling radiators.
Roof ponds have often been proposed as a means of providing thermal comfort in buildings in hot-arid regions.In a building cooled by means of a roof pond, the water in the roof pond absorbs excess heat through the ceiling, which should have a high thermal by: Spanish researchers have discovered a material said to offer radiative cooling and self-cleaning of devices which undergo critical heating during.
Based on the existing works on solar energy harvesting and radiative cooling and emerging efforts for converting outgoing thermal radiation to electricity, there are multiple promising pathways to. Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody Linxiao Zhua,1, Aaswath P.
Ramanb,1, and Shanhui Fanb,2 aDepartment of Applied Physics, Stanford University, Stanford, CA ; and bGinzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, CA Edited by John B. Pendry, Imperial College London, London Cited by: Due to the refractive index matching and high thermal emissivity property, a transparent radiative cooling function can be utilized to reduce the temperature of solar module.
Thermal experiment demonstrated that the embedded cellulose membrane can be reduced about 2 °C for solar module under routine working : Tiezheng Lv, Jiangpin Huang, Wei Liu, Rong Zhang. A great book covering passive solar basics, passive solar design, and building of passive solar heating and cooling projects such as solar rooms, solar windows, solar walls, and solar thermosyphon collectors.
A free download thanks to the authors. In particular, it was shown that the radiative cooling to below ambient air temperature can be achieved, with a photonic structure that reflects almost all incident sunlight and simultaneously emits significant thermal radiation in the midinfrared.
Such a structure, being a near-perfect solar reflector, makes no use of incident by: At night, passive cooling below ambient air temperature has been demonstrated using a technique known as radiative cooling, in which a device exposed to the sky is used to radiate heat Cited by:.
Recent works have demonstrated that daytime radiative cooling under direct sunlight can be achieved using multilayer thin films designed to emit in the infrared atmospheric transparency window while reflecting visible light.
Here, we demonstrate that a polymer-coated fused silica mirror, as a near-ideal blackbody in the mid-infrared and near-ideal reflector in the solar spectrum, achieves Cited by: Optics-Based Approach to Thermal Management of Photovoltaics: Selective-Spectral and Radiative Cooling Abstract: For commercial one-sun solar modules, up to 80% of the incoming sunlight may be dissipated as heat, potentially raising the temperature °C higher than the by: Radiative cooling, as a passive cooling method, is an effective way to save energy and reduce emissions by dissipating heat into space through the "sky window," without consuming any additional.