Exergy analysis of photovoltaic thermal (PVT) water collectors partially covered by Photovoltaic module connected in series

2014 ◽  
Author(s):  
Shyam ◽  
G.N. Tiwari
Keyword(s):  
Exergy Analysis ◽  
Photovoltaic Module ◽  
In Series

Investigation of Shading Characteristics of Mono-Crystalline and Poly-Crystalline Photovoltaic Modules Connected in Series

2015 ◽  
Vol 785 ◽  
pp. 220-224 ◽  
Author(s):  
Jin Chuan Teo ◽  
Rodney H.G. Tan ◽  
V.H. Mok
Keyword(s):  
Ideality Factor ◽  
Photovoltaic Module ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
In Series

This paper presents the investigation of partial shading characteristics of mono-crystalline and poly-crystalline photovoltaic module connected in series. Simulink models are developed to assist the investigation to determine the ideality factor for mono-crystalline and poly-crystalline photovoltaic module. Commercially available mono-crystalline and poly-crystalline photovoltaic module are used to extract measurable parameters for the model to study the behaviour of I-V curve. Measurements have been conducted for the investigation includingmono-crystalline only, poly-crystalline only, both unshaded, mono-crystalline shaded and poly-crystalline shaded. This paper contributes to the understanding of partial shading characteristics of different materials presence in photovoltaic string.

Studies of Heat Pumps Using Direct Expansion Type Solar Collectors

Solar Energy ◽  
2003 ◽  
Author(s):  
Sadasuke Ito ◽  
Naokatsu Miura ◽  
Yasushi Takano
Keyword(s):  
Heat Pump ◽  
Thermal Performance ◽  
Pressure Loss ◽  
Heat Pumps ◽  
Hot Water ◽  
Photovoltaic Module ◽  
Direct Expansion ◽  
Reduced Pressure ◽  
In Series ◽  
Hot Water Supply

A photovoltaic and thermal hybrid panel which was made of an aluminum roll -bond panel with a photovoltaic module on the surface was developed recently for use as an evaporator of a heat pump for residential hot water supply and room heating.1) Pressure loss of the refrigerant at the evaporator was large. Therefore, in the present study, shapes of the inlet and the outlet of the panel were modified to reduce pressure loss; also, thermal performance of the heat pump which adopted three evaporator panels connected in series was examined. Total area of the panels was about 1.9 m2 and the rated capacity of the compressor was 250 W. These modifications reduced pressure loss and improved thermal performance. The effect of the location of the feeler bulb on performance of the heat pump was also examined. It was inferred that the feeler bulb fixed on the tube at the outlet of the evaporator should be as close as possible to the evaporator outlet.

Overall Optimization and Exergy Analysis of an Air Conditioning System Using a Series-Series Counterflow Arrangement of Water Chillers

2019 ◽  
Vol 27 (04) ◽  
pp. 1950034 ◽  
Author(s):  
Nguyen Minh Phu
Keyword(s):  
Air Conditioning ◽  
Exergy Analysis ◽  
Cooling Tower ◽  
Exergy Efficiency ◽  
Air Conditioning System ◽  
In Series ◽  
Main Components ◽  
Compressor Power ◽  
Cooling Coil ◽  
Optimal Set

When water chillers are arranged in series-series counterflow (SSCF), the compressor lift of each chiller is decreased in comparison with that of water chillers in parallel. This means that the compressor power of SSCF chillers is lower than that of parallel chillers. In this paper, models of the main components in an air conditioning system were developed and verified to predict the behaviors of the whole system with respect to SSCF chillers. The results showed that performance was maximized with three SSCF chillers when the system was operated with normal set points. The performance was further improved to 26% and decreased with the number of SSCF chillers when the system was operated with optimal set points. The SSCF chiller system also demonstrated higher exergy efficiency regardless of the number of SSCF chillers. The irreversibility of components in SSCF chillers was rather low. However, the irreversibility of the cooling tower and cooling coil was slightly higher and lower, respectively, than those in the parallel chiller system.

Modelling and Simulation of Solar Photovoltaic Cell for Different Insolation Values Based on MATLAB/Simulink Environment

2014 ◽  
Vol 550 ◽  
pp. 137-143 ◽  
Author(s):  
S. Narendiran ◽  
Sarat Kumar Sahoo
Keyword(s):  
Photovoltaic Cell ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Electrical Characteristics ◽  
Array Type ◽  
Matlab Simulink ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Current Input ◽  
In Series

The paper discuss about the modelling and electrical characteristics of photovoltaic cell and its array type of construction in matlab-simulink environment at different insolation levels. The photovoltaic module is modelled using the diode electrical characteristic equation. The photovoltaic cell is analysed by voltage input and current input modules, The voltage and current input photovoltaic modules are simulated with different insolation values by varying the construction of PV modules. The results conclude that the current input PV module is well suited for applications were it shares same current when connected in series and voltage input PV module, where it shares same voltage when connected in parallel.

scholarly journals Application of “PolySwitch” fuses for the limitation of current overloads in photovoltaic systems of solar arrays

2018 ◽  
Vol 26 (1) ◽  
pp. 77-82 ◽  
Author(s):  
A. V. Ivanchenko ◽  
A. S. Tonkoshkur ◽  
S. V. Mazurik
Keyword(s):  
Short Circuit ◽  
Electrical Energy ◽  
Complete Loss ◽  
Total Power ◽  
Photovoltaic Module ◽  
Photovoltaic Modules ◽  
Solar Arrays ◽  
Current Voltage ◽  
In Series ◽  
Parallel Connections

The results of experimental study of the transformation of the light current-voltage and volt-watt characteristics for the parallel connections of photovoltaic modules when using “PolySwitch” polymer resettable fuses are given. The conditions for selecting such fuses which allow their correctly triggering and minimize the current overload are formulated and experimentally verified. It is established that if resettable fuses are connected in series to the circuits of all photovoltaic modules, which are connected in parallel thus forming a unit, this prevents such a situation as the complete loss of electrical energy generated by this unit due to the short circuit of one of its modules. At the fuse triggering the total power loss of the unit of  parallelly connected photovoltaic modules is mainly determined by the decrease of its current by the amount that is equal to the current of the disconnected photovoltaic module.

scholarly journals Performance of 20w Solar Photovoltaic Module for Energy and Exergy Analysis

2021 ◽  
Vol 7 (05) ◽  
pp. 102-106
Author(s):  
Rajendra. G, Sai Ranjith Reddy.K and Ganesh Kumar. I.R S. Yoga Sainath Reddy, Jagannath Reddy
Keyword(s):  
Exergy Analysis ◽  
Short Circuit ◽  
Photovoltaic System ◽  
Energy Output ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Solar Module ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis

The solar photovoltaic system generates both thermal energy and electrical energy by utilizing solar energy. In this paper an experimental attempt has made for calculating energy output as well as exergy output of solar PV panel installed at R.L.J.I.T. Bangalore. Energy and exergy analysis was performed by using first and second law of thermodynamics to evaluate energy and exergy. The framework involved in this process are ambient temperature, overall heat transfer, open-circuit voltage, short-circuit current, fill factor, solar radiations etc. It is predicted that temperature of pv solar module has most effect on the efficiencies. By the help of water or air the heat can be removed to improve both energy and exergy efficiencies.

scholarly journals Modelling and Design of Five Parameter Single Diode Photovoltaic Model with Artificial Intelligent MPPT Power System

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1063-1068
Keyword(s):  
Photovoltaic System ◽  
Photovoltaic Module ◽  
Voltage Versus ◽  
Control Approach ◽  
Power Extraction ◽  
Pv Module ◽  
Mathematical System ◽  
Perturb And Observe ◽  
In Series ◽  
Current Characteristics

In this article, an improved single diode Photo Voltaic mathematical system with novel Fuzzy Logic Control (FLC) based maximum power extraction approach was developed. The photovoltaic module voltage versus current characteristics derivation were developed and it’s utilized to extract the photovoltaic module unknown arguments via as saturation current, light generated current, shunt and ideality factor, series resistance at reference. The various mathematical models are utilized to determine the photovoltaic system arguments at reference circumference by acquainting equations to calculate the value of resistance in series and shunt. The production of highest power of PV modules were equated with dissimilar manufactured PV model with various environmental conditions. The percentage relative error and highest power is computed and compared with previous models in the survey for dissimilar photovoltaic modules. Further, in this paper added with improved Perturb and Observe (P&O) based FLC control approach utilized to extract the highest energy from solar panel. The output of the developed system exposes the good performance during steady state period and transient periods. Moreover to confirm the developed photovoltaic model matches exactly with that of Sandia PV module.

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