In common parabolic trough solar collectors (PTC), solar irradiation is concentrated at the bottom of the absorber tube, causing high surface temperatures, thermal stresses, and deflections with subsequent damages and costs. Also, the performance improvement of PTCs is always of significant importance.
In common parabolic trough solar collectors (PTC), solar irradiation is concentrated at the bottom of the absorber tube, causing high surface temperatures, thermal stresses, and deflections with subsequent damages and costs. Also, the performance improvement of PTCs is always of significant importance.
The solar energy, however, needs to be concentrated if a high-temperature source is required. The parabolic trough solar collectors (PTSCs), among other types of concentrating solar collectors, are the most appropriate method for providing solar thermal energy at an intermediate temperature range [19].
The solar collector was allowed to run for over 20 min to achieve quasi-steady state conditions before starting the experiments, and the proper operation of all measuring instruments was checked, including the connection of the temperature indicator to the temperature sensor, pyranometer, anemometer, and tracking of parabolic trough. …
Materials that can attain higher temperatures have resulting efficiency gains leading to lower costs. See How CSP''s thermal energy storage ... A trough solar collector field comprises multiple parabolic trough-shaped mirrors in parallel rows aligned to enable these single-axis trough-shaped mirrors to track the sun from east to west during ...
The mathematical model is based on the temperature of the absorber tube rather than the temperature of the fluid as it also helps to evaluate the performance of the collector for any working fluid other than water. ... in parabolic trough solar collector has great potential to reduce the capital cost and improve the performance of the solar ...
The concentrated sunlight can raise the collector temperature to about 1200F" A very detailed set of plans are included -- !! be careful !! Understanding Solar Concentrators. VITA paper on concentrating solar collectors : VITA paper provides a good deal of information on how a wide variety of concentrating solar collectors work.
Solar thermal collector
The design variables are the inlet temperature, and the outlet and inlet diameters of the PTC receiver tube. ... M. Geometric optimization of parabolic trough solar collector based on the local ...
Soponova 4.0 is a small low-cost, low-land-use collector for low-temperature power generation (up to 300 C), manufactured by Sopogy MicroCSP (USA) …
Because of its wide temperature range (up to 400 °C), the parabolic trough solar collector is the most commonly used in concentrated solar power technology. A …
This study aims to present the state-of-the-art of parabolic trough solar collector technology with a focus on different thermal performance analysis methods and …
Parabolic trough solar collectors are a type of solar thermal collector that can be used to generate electricity. This paper discusses the potential advantages and …
The parabolic trough collectors are the most widely used linear concentrators for the thermodynamic conversion of solar energy, especially in industrial …
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Introduction. Parabolic trough solar collectors (PTSCs) are high-temperature thermal systems which can operate at 550 °C [1].The thermal performances of these systems lower with increased operational temperature due to heat losses from the receiver [2], [3].There are also possible structural problems such as deformation and …
Deals with a parabolic-trough solar collector sizing algorithm for a specific load. ... starts at 310 °C, differing from other HTF that start at 100 °C. The thermo-solar salt outlet temperature is limited by the Second Law of Thermodynamics, where the thermal efficiency at 450 °C is about 0.04, after that it is not possible to obtain ...
They investigated the effects of turbine inlet pressure, temperature, solar radiation, ... Exergy analysis reveals a total destruction of 81.48 MW, in which the parabolic trough solar collectors contribute to a significant share of 85.8%. The exergoeconomic assessment yields a payback period of 4.01 years, while the product exergo …
The parabolic trough solar collector (PTSC) is a dominant technology available today in both commercial and industrial scale among the medium-temperature solar collectors. In comparison to other systems, Fig. 1 shows the temperature ranges of commonly used solar thermal systems [1]. Numerous manufacturing companies have …
A review of the parabolic trough collector (PTC) which is one of the CSP technology with a focus on the components, the working principle, and thermal properties of the parabolic trough collector.
Performance analysis of receiver of parabolic trough solar collector: Effect of selective coating, vacuum and semitransparent glass cover. Subhankar Ray, ... The value of circumferential temperature difference at mid-length of absorber tube was found to be 14.78 K for 750 W/m 2, ...
Present work encompasses developing a new methodology to incorporate the heat transfer characteristics of the evacuated space (vacuum) in the annulus region between the absorber tube and glass cover and the effect of selective coatings on the steel absorber tube for a 3-dimensional computational fluid dynamics model of a parabolic …
A parabolic trough solar collector can be divided into two types based on its applications: low to medium temperature and medium to high temperature. The first category is widely utilized in household hot water, water purification, industrial process heating, desalination, and food processing, among other uses.
A micro-parabolic trough solar collector was designed for integration with buildings. ... In order to achieve >100 °C temperature in a solar thermal collector, some amount of concentration of the incoming sunlight is typically required [6], [7].
A mathematical model was developed for the efficiency of the collector, as well as the temperature of the heat transfer oil on the basis of heat transfer …
Among the Concentrated Solar Collector (CSC) technologies, Parabolic Trough Collector (PTC) is the most mature and commercialized CSC technology today. Currently, solar PTC technology is mainly used for electricity generation despite its huge potential for heating, especially in industrial process heat (IPH) applications. Though the …
This section describes both the heat transfer odel and the hydraulic model of the solar collector field. 2.1 Heat Transfer Model According to Fig. 1, the transient energy balance relationship inside the parabolic trough collectors can be described by the following equations: Temperature homogenization control of parabolic trough solar …
DSG trough solar collector and outlet temperature control. Taking the recycling DSG in Refs. [2], [3] as an example, the opening of each parabolic mirror is 5.76 m, the total length of the parabolic concentrator is 550 m, the length of evaporation module is 425 m, and the length of superheating module is 75 m. The outlet temperature of ...
Parabolic trough solar collector is the most mature solar concentrating technology [22] which is used for power production [23], ... For any type solar field, the outlet temperature is restricted by HTF properties – so HTF with high thermal stability are preferred. For PTC system, typical HTF is a biphenyl/diphenyl oxide fluid (synthetic oil ...
Because of its wide temperature range (up to 400 ℃), the parabolic trough solar collector is the most commonly used in concentrated solar power technology. A parabolic trough solar...
For this, our study will target parabolic trough solar collectors due to the lack of precise studies necessary to find the three-dimensional distribution of the temperature of the absorber tube. The distribution of temperature is investigated by studying the effect of uniform solar heat flux on parabolic trough collector.