Review on solar air heater hybrid systems thermal performances

Abstract

As conventional fossil fuel systems release toxicants into the atmosphere, humanity is increasingly moving towards sustainability, towards using products that do not cause negative effects on the environment, have a long service life and offer multiple benefits. Solar air heating systems are increasingly used in household applications, even in industrial ones at times. The principle of operation of systems of this type is established on the existence of solar radiance, without this the panels have little or no efficiency at all, so they are limited to sunny periods. One of the methods of increasing the impact and performance of these systems is the realization of hybrid systems that offer several benefits with regard to heating the air in rooms, heating water and ventilating spaces. The meaning of this article is to present a summary of the existing literature, in the sphere of solar hybrid air heating systems, on the methods of improvement and the performance achieved.

Future Research Tendencies and Possibilities of Using Cogeneration Applications of Solar Air Heaters: A Bibliometric Analysis

“…The absorption surface of the solar air heating panel was changed with an integrated photovoltaic panel. Ribs with uneven cross-section were attached to the module to augment the performance of heat transfer amongst the air flow and the photovoltaic module [13,58].…”

“…The system allows the use of heated air based on solar radiation and a heat exchange system when solar energy is missing or does not provide enough thermal energy. The main components of the realized system are a transpired solar air heater, capillary tubes for heat exchange between cold air and hot water, and an integrated plate for the heat exchange between SAH and the compressor [13,14].…”

“…Use of solar air heaters in hybrid, cogeneration, trigeneration or polygeneration systems [13,14,58].…”

“…Among the dried products with such systems, we mention the following: figs [4], grapes [5], tapioca [6], medicinal herbs [7], red algae [8], black pepper [9], chili peppers [10], corn kernels [11], and bananas [12]. In addition, solar air heaters can be used in hybrid and cogeneration systems, such as a transpired solar air heater with a heat exchanger type capillary tube [13,14]; solar air heater, heat pump and ionic liquids; SAH and PV-T; SAH with thermochemical heat storage system; and solar air heater with a ventilation system [13].…”

Off-Grid Hybrid Renewable Energy System Operation in Different Scenarios for Household Consumers

“…Using these different sources, such as the sun and wind, to produce energy, which is vital for mankind, is a cost-effective solution that has high reliability and power characteristics [2]. The combination of two or more renewable energy sources, such as solar, wind, fuel cells, and biomass, results in a hybrid system for producing energy from environmentally friendly, low-cost renewable resources [3,4]. The use of stand-alone PV systems or wind turbine installations needs storage systems with an overall high cost of output energy.…”