Experimental study of modified dual slope hybrid photovoltaic (PV/T) solar thermal still

Abstract

Potable water and energy are the two basic requirements for everyday life of human. The world is now known to the crisis of potable water and availability of energy in daily life utilities. The greatest challenge in front of the people is to get the pure water for daily uses. In this paper experimental studies and a comparison of modified dual slope hybrid photo voltaic (PV/T) solar thermal still and a photo voltaic thermal (PVT) double slope active solar still with two flat plate collectors connected and integrated to the basin of solar still has been performed at KIET Group of Institutions Ghaziabad, India at Campus premises of hostel roof top in two steps, also a solar powered modified PMDC motor has been used to circulate the water in the basin to increase the yield of the system for water production. Hybrid photo voltaic-thermal (PV/T) generates electrical energy and heat. A modified dual slope hybrid photo voltaic thermal (PV/T) dual slope solar thermal still has been designed and fabricated to study the performance for water production. Experimental data for distillate yield, water temperature have been included. The methodology for the modification in design and fabrication of dual slope active solar still has been discussed in detail. The actual setup specifications in addition to the mode of performing the experiment also given in details with the results proven after comparisons. The model of modified distillation system for water production is validated with experimental data. It has been also proven that the yield obtained from modified dual slope hybrid photo voltaic (PV/T) solar thermal still significantly more in comparison to the previous dual slope solar stills in use. Actual photograph of the setup and site are included.

The use of a hybrid photovoltaic/thermal (PV/T) collector system as a sustainable energy-harvest instrument in urban technology

“…Second, it is a clean technology that can operate without using or producing toxic waste, such as radioactive materials. However, the disadvantages are obvious and cannot be ignored: the cooling effect is uneven, an innovative water absorption design is required, the efficiency is low, the payback period is long, and the return is not ideal [ 60 ]. The possibility of photovoltaic collectors being used as an energy source for this technology will also increase.…”

Performance Evaluation of a Photovoltaic-Thermal Collector Coupled Stepped Solar Still for Indian Climatic Conditions

“…A popular and affordable solar still system called tiered solar still provides more freshwater than a basin-type solar still. Due to the thinner water layer and forced flow concept, the evaporation rate in stepping stills is noticeably greater [17]. Several studies have been conducted on the performance analysis of step solar stills; PV-and PVT-based desalination has been performed in recent years.…”