Performance evaluation and simulation of solar photovoltaic pumping system round the year
Loading...
Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Punjab Agricultural University, Ludhiana
Abstract
The present study was undertaken to analyze the performance of solar photovoltaic (SPV) pumping system parameters, variation of solar insolation and amount of water pumped per month under different seasons. The average flow rate in summer, monsoon, post monsoon and winter season was 3.0 Lps, 2.17 Lps, 3.44 Lps and 2.93 Lps, respectively. The amount of water pumped in summer, monsoon, post monsoon and winter season was 110.7m3/9hr/day, 75.16 m3/9hr/day, 105.93 m3/9hr/day and 83.98 m3/7hr/day, respectively. The average conversion efficiency in summer, monsoon, post monsoon and winter season was 14.36 %, 15.13 %, 17.04 % and 16.85 %, respectively. Based on this relationship between solar irradiance and flow rate; panel temperature and conversion efficiency under different seasons were developed. The major factor which influences the performance of any SPV pumping system is the conversion efficiency and conversion efficiency is significantly affected by the panel temperature. The range of optimum panel temperature should be between 12 ˚C to 32 ˚C at which conversion efficiency will be maximum varying from 18.39 % to 21.0 %. The relationship between solar irradiance and flow rate during summer, monsoon, post monsoon and winter season followed linear equation having R2 value of 0.70, 0.89, 0.81 and 0.92, respectively. The relationship between panel temperature and conversion efficiency during summer, monsoon, post monsoon and winter season followed linear equation having R2 value of 0.75, 0.83, 0.71 and 0.78, respectively. The presence of clouds significantly affected/lowe-red down the current, RPM and flow rate but the temperature did not change much which reveals that temperature has minimum effect on the development of current and voltage in solar photovoltaic cells. Flow rate was estimated using utilizability method and simulated by PV SYST model. The coefficient of variation between estimated flow rate by utilizability method and measured flow rate and simulated flow rate and measured flow rate was found to be 9.00 % and 15.08 %, respectively.
Description
Keywords
null