Showing papers on "Photovoltaic thermal hybrid solar collector published in 1983"
Book•
01 Jan 198352 citations
TL;DR: In this paper, the use of inorganic photochemical reactions for the conversion and storage of solar energy was considered, and the primary emphasis was on reactions occurring in a homogeneous so...
Abstract: In this article, the author considers the use of inorganic photochemical reactions for the conversion and storage of solar energy. The primary emphasis is on reactions occurring in a homogeneous so...
38 citations
TL;DR: In this article, the performance of a thermophotovoltaic (TPV) converter for solar energy is compared with that of direct solar energy conversion by silicon and germanium solar cells.
29 citations
Patent•
15 Jul 1983
TL;DR: In this paper, a system for converting solar energy into electric power for driving an electro-mechanical pump to pump liquid by processing electric power furnished by solar cells of variable level was described, where the solar energy was converted into pulses of constant electric power, the pulses spaced from one another as a function of the level of solarization.
Abstract: A system converting solar energy into electric power for driving an electro-mechanical pump to pump liquid by processing electric power furnished by solar cells of variable level, which includes converting the solar energy into pulses of constant electric power, the pulses spaced from one another as a function of the level of solarization.
28 citations
Patent•
3M1
TL;DR: In this article, a solar concentrator with wide effective aperture is disclosed, which comprises at least one linear echelon reflector element which is inclined with respect to the direction of incident solar radiation to direct incident solar rays to a line focus.
Abstract: A solar concentrator with wide effective aperture is disclosed, which comprises at least one linear echelon reflector element which is inclined with respect to the direction of incident solar radiation to direct incident solar radiation to a line focus.
27 citations
TL;DR: In this article, a computer simulation of a regenerating-type solar collector is presented, which is used for the regeneration of a liquid desiccant and forms part of an open-cycle solar air-conditioning system.
26 citations
Patent•
09 Feb 1983
TL;DR: A solar collector-skylight assembly with movable parabolic concentrators is described in this article, where the concentrators direct solar energy to a collector to heat fluid circulating there through to provide a solar heater, and when the concentrator is moved to another position, the assembly functions as a skylight wherein the solar energy is allowed to pass through the collector, to illuminate the interior of a building.
Abstract: A solar collector-skylight assembly having movable parabolic concentrators wherein, in one position the parabolic concentrators direct solar energy to a collector to heat fluid circulating therethrough to thereby provide a solar heater; and when the concentrators are moved to another position, the assembly functions as a skylight wherein the solar energy is allowed to pass through the collector, to thereby illuminate the interior of a building upon which the solar collector-skylight assembly is mounted.
24 citations
TL;DR: In this article, a 12-station network located in and around Vancouver, B.C. has been used to define the local (mesoscale) variations in solar energy, along with temperature, are the inputs required by the simulation models used to assess the significance of these variations on the performance and economics of both active and passive solar heating systems.
Abstract: A 12‐station network located in and around Vancouver, B.C. has been used to define the local (mesoscale) variations in solar energy. Numerical models are used to convert the horizontal data to inclined surface irradiances which, along with temperature, are the inputs required by the simulation models used to assess the significance of these variations on the performance and economics of both active and passive solar heating systems. Solar radiation differences over the study area have a marked influence on the operation of a domestic hot water heating system while the temperature variations between the same stations have a comparatively small impact. For both active and passive space heating the situation is reversed because temperature has a large impact on the energy demand and hence on the extent of solar energy utilization. The results suggest that local variations of solar radiation should be incorporated in solar domestic hot water design studies while spatial variations in temperature shou...
24 citations
Book•
01 Jan 1983
TL;DR: In the southeast, there exist many climate zones where heating needs are low to minimal as mentioned in this paper, and if designed properly, a passive solar heating system can provide most of a home's heating needs for much of the heating season.
Abstract: In the southeast, there exist many climate zones where heating needs are low to minimal. If designed properly, a passive solar heating system can provide most of a home’s heating needs for much of the heating season. Because the sun is the main source of heat, a passive solar home includes four features that distinguish it from a conventionally heated home: ♦ A method to collect solar energy; ♦ A way of storing that energy; ♦ A system to distribute heat to the living spaces; and ♦ A means for controlling the heat that reaches living spaces. A passive solar home should always be built to meet high energy conservation standards for the region in which it is built. Carefully planning and designing a home to balance the glass and thermal mass storage areas is crucial in the southeast. Otherwise, the house may overheat, underheat, or have undesirable temperature swings.
23 citations
TL;DR: In this paper, a study of system interactions between large-scale photovoltaic plants, for electrical energy supply, and water electrolysis is carried out, in view of their combination with solar electricity source.
Patent•
01 Aug 1983
TL;DR: In this article, a heterojunction photovoltaic device, containing a highly conductive coating material having a band gap greater than 0 to about 3.0 e.V. on a substrate containing a semiconductor material, is utilized in highly efficient phot-voltaic cells and radiometric detection cells.
Abstract: A heterojunction photovoltaic device, containing a highly conductive coating material having a band gap greater than 0 to about 3.0 e.V. on a substrate containing a semiconductor material, is utilized in highly efficient photovoltaic cells and radiometric detection cells.
TL;DR: In this article, the optimum temperature of operation of a solar concentrator and thus the maximum power obtained from a solar thermal power plant has been calculated, and results are plotted graphically and discussed.
Patent•
03 Nov 1983
TL;DR: An apparatus for controlling the charge rate and voltage of storage batteries of a solar power generating system using a single voltage regulator module to monitor and control the state of charge of any number of cells of a battery and a number of solar modules is described in this article.
Abstract: An apparatus for controlling the charge rate and voltage of storage batteries of a solar power generating system using a single voltage regulator module to monitor and control the state of charge of any number of cells of a battery and a number of solar modules.
TL;DR: In this article, the state of the art of the evacuated tubular solar energy collector has been discussed, and various designs, and special features which have distinguished it from conventional flat plate collectors have been highlighted.
Patent•
01 Jun 1983
TL;DR: In this paper, a system for heating a building adapted to confine animals includes a solar collector, means for storing the heat absorbed by the collector and heat radiating floor mats which use such heat.
Abstract: A system for heating a building adapted to confine animals includes a solar collector, means for storing the heat absorbed by the collector and heat radiating floor mats which use such heat. The collector includes panels each having lightweight, clear, parallel plastic tubes secured at their ends to headers of similar material. The tubes are disposed in troughs in the panel base having inclined reflective side walls to concentrate reflected solar energy on the tubes. The heat radiating floor mats comprise tubes and headers like those used in the solar collector panels.
Patent•
24 Jun 1983
TL;DR: In this article, a solar energy system consisting of a collector and a heat transporting medium performing a primary circulation, which is thermally coupled by the downward run with a working medium circuit is presented.
Abstract: The invention relates to a solar energy system comprising a collector consisting of a sloping space exposed to solar light for a heat transporting medium performing a primary circulation, which is thermally coupled by the downward run with a working medium circuit. An object of the invention is to design a solar energy system in a manner such that in contrast to the conventional system no control or safety apparatus is required, since solely natural, physical mechanisms are used so that a self-controlling operation is obtained, as a result of which the risk of disturbances and standstill is considerably reduced and the intrinsic safety is enhanced. The above-mentioned purposes are, in general, achieved by means of a system set forth in the preamble, the primary circulation of which takes place in a vessel partly filled with fluid and partly with the vapor thereof and operating as a heat pipe. The invention further provides a solar heat collector, the active surface of which is divided into cells bounded by upright ribs. Owing to the provision of such cells the dissipation of heat by convection due to wind brushing past can be reduced to negligible proportions.
27 Jun 1983
TL;DR: In this article, the low voltage, high current characteristics of a thermoelectric generator were used to produce hydrogen gas in a practical demonstration of solar energy conversion and storage using evacuated glass tubes as concentrators of solar heat.
Patent•
15 Apr 1983
TL;DR: In this article, a relay connects the photovoltaic panel and capacitor to the inductive load when the output voltage of the capacitor has reached a predetermined level which corresponds to an optimum operating voltage range.
Abstract: The invention comprises a photovoltaic panel for converting solar energy into electric energy, a load and a capacitor connected to the photovoltaic panel for receiving current produced by the panel and storing the current to produce an output voltage which increases with the amount of stored current. A relay connects the photovoltaic panel and capacitor to the inductive load when the output voltage of the capacitor has reached a predetermined level which corresponds to an optimum operating voltage range of the photovoltaic panel.
TL;DR: In this article, the thermal performance of solar air heaters consisting of a porous textile absorber between two PVC foils was investigated, and it was found that the linear approximation for the Hottel-Bliss equation leads to erroneous estimations for the collector's parameters when the absorber is porous; for the same type of collector with a denser textile as absorber, however, such an approximation yields, as usual, correct numerical values for the characteristic parameters of the collector.
Abstract: The thermal performance of solar air heaters consisting of a porous textile absorber between two PVC foils has been investigated. The efficiency of the heaters depends strongly on the characteristics of the textile forming the absorber and on the back insulation. For an incident solar radiation of 687 W/m2 at the collector's surface, a temperature rise of 16-6°C in the air flowing through the solar collector at a rate of 800 m3/h, was achieved, thus yielding an efficiency of nearly 71 percent.
Further it was found that the linear approximation for the Hottel-Bliss equation leads to erroneous estimations for the collector's parameters when the absorber is porous; for the same type of collector with a denser textile as absorber, however, such an approximation yields, as usual, correct numerical values for the characteristic parameters of the collector.
TL;DR: In this paper, the theory of solar energy collectors which utilise sheets of fluorescent plastic is described and a method of producing fluorescent plastic by applying a thin film coating to clear plastic is evaluated and found to be superior to conventional doping techniques.
Abstract: The theory of solar energy collectors which utilise sheets of fluorescent plastic is described. A method of producing fluorescent plastic by applying a thin film coating to clear plastic is evaluated and found to be superior to conventional doping techniques. Two small scale test collectors were constructed and measurements to assess performance were made. The quantum efficiency of each collector was found to be 15+or-5% in direct sunlight and an energy efficiency estimate of 2.5% was made for the collector/solar cell combination.
TL;DR: An analysis of a honeycomb-stabilized, saltless solar pond as a solar energy collector and long term (spanning seasons) storage system is presented in this article, where the solar pond is considered with a nonconvective zone made up of an oil layer and air honeycomb configuration.
TL;DR: In this paper, a heating system best suited to the local requirements and resources of Quebec, Canada, was developed, where solar collectors may be operated at evaporation temperatures lower than their ambient temperature.
Abstract: A heating system best suited to the local requirements and resources of Quebec, Canada, was developed. Solar source heat pump systems with solar collectors cooled directly with R 12 appear to be a promising means of utilizing solar energy in cold climates. The solar collectors may be operated at evaporation temperatures lower than their ambient temperature, and performance improved by cooling it with an evaporative refrigerant, rather than a single phase fluid.
TL;DR: In this article, the behaviour of luminescent solar concentrators (LSCs) as bifacial captors was considered and the effect of various geometries, LSC materials and diffusing surfaces was also studied.
Patent•
14 Feb 1983
TL;DR: A heat exchange system operates on solar energy, supplemented by nonsolar manufactured fuels such as electricity, natural gas, propane and the like as discussed by the authors, which includes a solar heat collector and a heat exchanger for delivering the collected solar heat to a water heater and furnace.
Abstract: A heat exchange system operates on solar energy, supplemented by nonsolar manufactured fuels such as electricity, natural gas, propane and the like. The system includes a solar heat collector and a heat exchanger for delivering the collected solar heat to a water heater and furnace. Supplemental heating means utilizing a nonsolar fuel will heat the collector if an insufficient amount of solar heat is available. The system can also include an air conditioning system.