TY - JOUR
TI - Design and performance analysis of hybrid solar powered geyser in Islamabad, Pakistan
AU - Elahi Hassan
AU - Tamoor Ali
AU - Basit Abdul
AU - Israr Asif
AU - Swati R F
AU - Ahmad Shamraiz
AU - Ghafoor Usman
AU - Shaban M
JN - Thermal Science
PY - 2020
VL - 24
IS - 2
SP - 757
EP - 766
PT - Article
AB - As a consequence of energy crisis and pollution around the globe, many  countries are shifting towards the renewable energy resources which are  environmental friendly too i.e., solar energy. The aim of this research work  is to design a solar powered geyser that can be used for domestic as well as  for industrial purposes. The analytical model is constructed to understand  the behavior of water temperature with respect to time and to the energy  that can be generated from solar panel with and without glass glazing. The  extensive experimentation was carried out at self designed test rig in  Islamabad, Pakistan for six months i.e., Aug 2017 - Jan 2018. The response  of the power output to the time in specific month and its efficiency is  predicted and optimized. Moreover, electrical backup was integrated in  closed loop feedback circuit to achieve maximum efficiency even in dark  cloudy weather or a sunny day. Moreover, it is calculated that how much  external power is required by the system in order to perform the task at  different time intervals of the day. Analytical results were in good  agreement with experimental results, with error of 9%.