Development of a Cheap and Simple Sensor-Based Polar Tracking System

2007 ◽  
Author(s):  
Ulises Castro ◽  
Nicola´s Vela´zquez ◽  
Mario Mora ◽  
Iva´n O. Herna´ndez ◽  
Jesu´s A. Cantu´
Keyword(s):  
Cooling System ◽  
Tracking System ◽  
Electric Energy ◽  
Photovoltaic Module ◽  
Radiation Measurement ◽  
Water Pump ◽  
Pv Module ◽  
Evaporative Cooling System ◽  
Solar Thermal Cooling ◽  
Thermal Cooling

The present work describes the design and construction of a Sensor-Based Polar Tracking System. It was implemented to drive a Photovoltaic module with four panels parallel connected, but it can be used to work with any concentrator with this type of tracking. This system looks for the most incidence radiation region, increasing the amount of collected energy, and therefore increasing the amount of electric energy produced. To control the motion of the electromechanical mounting, a very simple and economic circuit has been developed. Whole system has been tested in different applications like: solar radiation measurement, supplying the energy to a water pump for a Solar Thermal cooling and also to an evaporative cooling system. Experimental results show an increase of the collected energy up to 29% compared with a fixed PV module.

Thermal Analysis of a Conical Receiver in a Parabolloid Dish to be Used as Generator in an Advanced Solar Thermal Cooling System

2006 ◽  
Author(s):  
D. Sauceda ◽  
N. Vela´zquez ◽  
R. Beltra´n ◽  
M. Quintero
Keyword(s):  
Thermal Analysis ◽  
Cooling System ◽  
Focal Length ◽  
Tracking System ◽  
Solar Thermal ◽  
Refrigeration System ◽  
Glass Cover ◽  
Solar Tracking ◽  
Solar Thermal Cooling ◽  
Thermal Cooling

In this paper an experimental thermal analysis made to a conical receiver attached to a solar parabolloid dish concentrator is presented, the purpose of this study is to know if it fulfills the requirements as far as quality and amount of energy demanded by a generator of a solar thermal cooling system (Solar-Branched-GAX Cycle). The analyzed system consists of a conical receiver of 19 cm of diameter by 20 cm of height, which was mounted to a focal length of 80 cm in a communications conventional antenna of 190 cm diameter, prepared with a reflecting coat. The concentrator was mounted in a multipurpose proving stand of solar collectors, with a solar tracking system in two axes. The analysis was carried out by evaluating experimentally three cases, which consisted of: A) receiver smooth, B) Receiver smooth with glass cover and C) Receiver with fins in the inner tail cone. According to the obtained results it can be concluded that the system of parabolloid disc concentrator using a conical receiver with fins is a very interesting option to be used as a generator of a solar thermal refrigeration system, since steam for a volumetric flow of 0.480 l/min can be generated.

Model predictive control of a high efficiency solar thermal cooling system with thermal storage

2019 ◽  
Vol 196 ◽  
pp. 214-226 ◽  
Author(s):  
Sergio Pintaldi ◽  
Jiaming Li ◽  
Subbu Sethuvenkatraman ◽  
Stephen White ◽  
Gary Rosengarten
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
High Efficiency ◽  
Cooling System ◽  
Thermal Storage ◽  
Solar Thermal ◽  
Solar Thermal Cooling ◽  
Thermal Cooling

Comparative Efficiency of Solar Panel by Utilize DC Water Pump and DC Hybrid Cooling System

2015 ◽  
Vol 793 ◽  
pp. 398-402
Author(s):  
Y.M. Irwan ◽  
W.Z. Leow ◽  
M. Irwanto ◽  
M. Fareq ◽  
N. Gomesh ◽  
...  
Keyword(s):  
Output Power ◽  
Solar Irradiance ◽  
Output Voltage ◽  
Cooling System ◽  
Water Pump ◽  
Output Current ◽  
Comparative Efficiency ◽  
Pv Module ◽  
Voltage Output ◽  
Hybrid Cooling

The purpose of this paper is discussed about comparative efficiency of solar panel by utilize DC water pump and DC hybrid cooling system. Ambient temperature and solar irradiance are played main role of the efficiency of PV module. When temperature of PV module increase, the efficiency of PV module will decreased and vice versa. When solar irradiance increase, output current and output power will increase with linear and output voltage will increase with marginal and vice versa. A solution is provided to solve problem of low efficiency of PV module which is DC cooling system. DC brushless fan and water pump with inlet/outlet manifold were designed for actively cool the PV module to improve efficiency of PV cells. The PV module with DC water pump cooling system increase 3.52 %, 36.27 %, 38.98 % in term of output voltage, output current, and output power respectively. It decrease 6.36 °C compare than to PV module without DC water pump cooling system. While PV module with DC hybrid cooling system increase 4.99 %, 39.90 %, 42.65 % in term of output voltage, output current, and output power respectively. It decrease 6.79 °C compare to PV module without DC water pump cooling system. The higher efficiency of PV module, the payback period of the system can be shorted and the lifespan of PV module can be longer.

Simulation and Optimization of Solar Thermal Cooling System in Manufacturing Research Center Building to Reduce Operational Cost Using Software EnergyPlus and GenOpt

2015 ◽  
Vol 780 ◽  
pp. 81-86 ◽  
Author(s):  
Nasruddin ◽  
K. Rahadian ◽  
M.I. Alhamid ◽  
Arnas
Keyword(s):  
Cooling System ◽  
Solar Thermal ◽  
Research Center ◽  
Operational Cost ◽  
Water Heater ◽  
Air Conditioning System ◽  
Simulation And Optimization ◽  
Solar Thermal Cooling ◽  
Absorption Cycle ◽  
Thermal Cooling

Solar Thermal Cooling System with its absorption cycle is expected to replace the conventional air conditioning system with vapor compression cycle because it is more efficient in terms of cost and energy. However, due to the heat of the sun is not always stable, the system needs to be equipped with a backup energy source, one of which is CNG. In the Manufacturing Research Center building, the lack of facilities that support availability of CNG causes large operational cost. Therefore, optimization efforts with the aim to reduce operational cost are needed. Simulation and optimization performed with EnergyPlus and GenOpt. The conclusion is that the installation of 187.5 kW electric tankless water heater is able to reduce total operational cost by 34.65% compared to system that uses combination of solar thermal and CNG and 49.69% compared with system that uses only CNG.

scholarly journals Analysis and Fabrication of an Active Cooling System for Reducing Photovoltaic Module Temperature

2017 ◽  
Vol 7 (5) ◽  
pp. 1980-1986
Author(s):  
A. Q. Jakhrani ◽  
A. R. Jatoi ◽  
S. H. Jakhrani
Keyword(s):  
Wind Speed ◽  
Flow Rate ◽  
Cooling System ◽  
Performance Comparison ◽  
Heat Extraction ◽  
Photovoltaic Module ◽  
Climatic Parameters ◽  
Photovoltaic Modules ◽  
Active Cooling ◽  
Pv Module

The purpose of this study is to fabricate and analyze an active cooling system for reducing photovoltaic (PV) module temperature and increasing its efficiency. An active cooling system was devised to cool the PV module. Two modules of same specifications were used for this study. One module was cooled, and other was left un-cooled for performance comparison. Solar radiations, wind speed, ambient temperature and temperatures at different points of the fabricated system were measured. The modules were mounted on a frame facing true south at the inclination of the latitude of the location. The measurements were taken during daytime with one hour intervals for two weeks. The temperatures at various points on cooled and un-cooled photovoltaic modules were noted using two different flow rates with 1 lit/min and 2 lit/min. It was discovered that the efficiency of PV module was enhanced from 6% to 7% during study period. The flow rate of 1lit/min was found more feasible for heat extraction as compared to the flow rate of 2lit/min. The wind speed was found to be more helpful for heat extraction from the modules as compared to other climatic parameters.

Comparative Analysis of Solar Thermal Cooling and Solar Photovoltaic Cooling Systems

2011 ◽  
Author(s):  
N. Fumo ◽  
V. Bortone ◽  
J. C. Zambrano
Keyword(s):  
Energy Consumption ◽  
Fossil Fuels ◽  
Cooling System ◽  
Solar Thermal ◽  
Solar Photovoltaic ◽  
Solar Thermal Energy ◽  
Cooling Systems ◽  
Solar Cooling ◽  
Solar Thermal Cooling ◽  
Thermal Cooling

The Energy Information Administration of the United States Department of Energy projects that more than 80% of the energy consumption of the U.S. by 2035 will come from fossil fuels. This projection should be the fuel to promote projects related to renewable energy in order to reduce energy consumption from fossil fuels to avoid their undesirable consequences such as carbon dioxide emissions. Since solar radiation match pretty well building cooling demands, solar cooling systems will be an important factor in the next decades to meet or exceed the green gases reduction that will be demanded by the society and regulations in order to mitigate environmental consequences such as global warming. Solar energy can be used as source of energy to produce cooling through different technologies. Solar thermal energy applies to technology such as absorption chillers and desiccant cooling, while electricity from solar photovoltaic can be used to drive vapor compression electric chillers. This study focuses on the comparison of a Solar Thermal Cooling System that uses an absorption chiller driven by solar thermal energy, and a Solar Photovoltaic Cooling System that uses a vapor compression system (electric chiller) driven by solar electricity (solar photovoltaic system). Both solar cooling systems are compared against a standard air cooled cooling system that uses electricity from the grid. The models used in the simulations to obtain the results are described in the paper along with the parameters (inputs) used. Results are presented in two figures. Each figure has one curve for the Solar Thermal Cooling System and one for the Solar Photovoltaic Cooling System. One figure allows estimation of savings calculated based the net present value of energy consumption cost. The other figure allows estimating primary energy consumption reduction and emissions reduction. Both figures presents the result per ton of refrigeration and as a function of area of solar collectors or/and area of photovoltaic modules. This approach to present the result of the simulations of the systems makes these figures quite general. This means that the results can be used to compare both solar cooling systems independently of the cooling demand (capacity of the system), as well as allow the analysis for different sizes of the solar system used to harvest the solar energy (collectors or photovoltaic modules).

scholarly journals Performance Analysis of Photovoltaic Module with Different Passive Cooling Methods

2021 ◽  
Vol 945 (1) ◽  
pp. 012016
Author(s):  
Muhammad Arif bin Azahari ◽  
Chua Yaw Long ◽  
Koh Yit Yan
Keyword(s):  
Output Power ◽  
Cooling System ◽  
Operating Temperature ◽  
Passive Cooling ◽  
Photovoltaic Module ◽  
Back Side ◽  
Cooling Systems ◽  
Pv Module ◽  
Passive Cooling Systems ◽  
Cotton Wick

Abstract This paper analyses the difference in terms of performance of passive cooling systems for photovoltaic (PV) modules. The objective of this paper is to identify which passive cooling systems offers the best results in reducing the operating temperature and improving the generation of output power. The performance of photovoltaic (PV) module will gradually decrease as the operating temperature increases. The energy from the sun’s photons are not enough to knock out the electrons from the atom to generate more electricity. That being the case, two passive cooling systems is developed which is the cotton wick structures with water and aluminium fins were attached to the back side of the photovoltaic (PV) module. The cotton wick structures with water utilises the capillary action of the water to extract excess heat from the module while the aluminium fins act as a heat sink that can remove heat from module to the adjacent air. Results showed that the cooling systems managed to enhance the output power by an average of 3.94% for the module with cotton wick structures with water while an average of 2.67% increment for the module under aluminium fin mounted as the cooling system.

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