scholarly journals Experimental Study of a Parabolic Trough Medium Temperature Solar Thermal System

2015 ◽  
Vol 70 ◽  
pp. 504-509 ◽  
Author(s):  
Hang Qu ◽  
Mingtao Wang
Keyword(s):  
Experimental Study ◽  
Solar Thermal ◽  
Thermal System ◽  
Parabolic Trough ◽  
Medium Temperature ◽  
Solar Thermal System

scholarly journals Experimental Investigation of Heat Losses from a Heat Pipe Based Parabolic Trough Collector used for Direct Steam Generation

2021 ◽  
pp. 31-39
Author(s):  
Abiem Louis Tersoo ◽  
Akoshile Clement Olufemi
Keyword(s):  
Experimental Investigation ◽  
Thermal Efficiency ◽  
Glass Tube ◽  
Heat Losses ◽  
Solar Thermal ◽  
Thermal System ◽  
Steam Generation ◽  
Parabolic Trough ◽  
Direct Steam ◽  
Solar Thermal System

The performance of a thermosiphon based parabolic trough collector (PTC) used for direct steam generation depends largely on the heat losses of the solar thermal system. This paper presents an experimental investigation of the heat losses in a thermosiphon based solar thermal system that used a linear receiver with a PTC for the generation of low temperature steam. A locally constructed PTC was used to concentrate sun rays to a linear copper pipe enclosed in an evacuated glass tube and held at the focal line of the PTC to heat water and generate steam. Circulation of the water in the closed-loop solar thermal system was through natural convection. A solar meter was used to measure the incident radiation flux at the experimental site and PT100 temperature sensors were installed at different points of the system to measure the temperature distribution within the system. The thermal efficiency and overall heat losses of the system were investigated by fitting the experimental data to standard equations. The results showed that the instantaneous thermal efficiency of the system was 46.48%, 43.1% and 45.32% respectively for three days examined. The overall heat losses in the system were 1211.95, 974.32 and 911.26 kwh per day respectively for the three days investigated. Heat losses from the tank accounted for over 83% of the losses for all the days examined. The evacuated glass tube reduced heat losses from the receiver to very low values of 2.31, 1.63 and 1.43 KWh per day respectively for the three days tested. The use of a better insulating material on the tank was recommended to reduce convective and conductive heat losses, thereby enhancing the performance of the system.

scholarly journals Design of automation control thermal system integrated with parabolic trough collector based solar plant

2021 ◽  
pp. 218-218
Author(s):  
Anbuchezhian Nattappan ◽  
Suganya Priyadharshini Ganesan ◽  
Velmurugan Thiagarajan ◽  
Krishnamoorthy Ranganathan
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Solar Thermal ◽  
Thermal System ◽  
Solar Concentrator ◽  
Parabolic Trough ◽  
Parabolic Trough Collector ◽  
Automation Control ◽  
Solar Thermal System ◽  
Noisy Condition

This paper presents enhanced design for Automation control of processes involved in a solar system which utilizes programmable logic controller to automate tracking system for obtaining maximum solar radiation. Three areas are involved in this proposed multi area system where first and second area considers solar power plant with thermal system based parabolic trough collector with fixed solar isolation and random isolation of solar energy whereas third area comprises of solar thermal system with dish Stirling realistic unit. Energy efficiency can be increased by using solar concentrator along with Stirling engine. Optimization of gain of the controller is by utilizing crow search novel algorithm. Crow search algorithm is an optimization technique, which provides better performance at complex time varying noisy condition and time in-varying noisy condition. The Proposed controller is evaluated by obtaining the optimized parameters of the system whose comparison is done by operating proposed controller with & without renewable sources of energy thereby revealing better performance for both conditions. Testing is done in different areas with fixed solar isolation and random stisolation of solar energy involved in solar thermal power plant based on parabolic trough collector. Gain and parameters of the controller of the solar power plant are optimized by utilizing automation for operation of solar concentrator with parabolic Trough collector. Data acquisition and monitoring is done by human machine interface (HMI) in order to report safe operation. The Simulation results of integrated solar thermal system involving dish Stirling with parabolic trough collector, shows that dynamic response of the proposed controller operating with renewable solar energy is better than that of non-renewable energy source.

Design, Installation, and Performance Characterization of a Laboratory-Scale Solar Thermal System for Experiments in Solar Energy Utilization

2012 ◽  
Author(s):  
Stephanie Drozek ◽  
Christopher Damm ◽  
Ryan Enot ◽  
Andrew Hjortland ◽  
Brandon Jackson ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Laboratory Scale ◽  
Energy Utilization ◽  
Solar Thermal ◽  
Thermal System ◽  
Performance Characterization ◽  
And Performance ◽  
Solar Thermal System

The purpose of this paper is to describe the implementation of a laboratory-scale solar thermal system for the Renewable Energy Systems Laboratory at the Milwaukee School of Engineering (MSOE). The system development began as a student senior design project where students designed and fabricated a laboratory-scale solar thermal system to complement an existing commercial solar energy system on campus. The solar thermal system is designed specifically for educating engineers. This laboratory equipment, including a solar light simulator, allows for variation of operating parameters to investigate their impact on system performance. The equipment will be utilized in two courses: Applied Thermodynamics, and Renewable Energy Utilization. During the solar thermal laboratories performed in these courses, students conduct experiments based on the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) 93-2010 standard for testing and performance characterization of solar thermal systems. Their measurements are then used to quantify energy output, efficiency and losses of the system and subsystem components.

scholarly journals Technological Advancement of Solar Thermal System Desalination Process – A Review

2021 ◽  
Vol 1059 (1) ◽  
pp. 012061
Author(s):  
B Kalidasan ◽  
R Divyabharathi ◽  
AK Pandey ◽  
C Subramaniyan ◽  
S Mohankumar
Keyword(s):  
Solar Thermal ◽  
Thermal System ◽  
Technological Advancement ◽  
Solar Thermal System

Optimization of a building integrated solar thermal system with seasonal storage using TRNSYS

2019 ◽  
Vol 137 ◽  
pp. 56-66 ◽  
Author(s):  
Christodoulos N. Antoniadis ◽  
Georgios Martinopoulos
Keyword(s):  
Solar Thermal ◽  
Thermal System ◽  
Solar Thermal System
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