A Comprehensive Review on Efficiency Enhancement of Solar Collectors Using Hybrid Nanofluids

Abstract

Because of its potential to directly transform solar energy into heat and energy, without harmful environmental effects such as greenhouse gas emissions. Hybrid nanofluid is an efficient way to improve the thermal efficiency of solar systems using a possible heat transfer fluid with superior thermo-physical properties. The object of this paper is the study the latest developments in hybrid applications in the fields of solar energy systems in different solar collectors. Hybrid nanofluids are potential fluids with better thermo-physical properties and heat transfer efficiency than conventional heat transfer fluids (oil, water, ethylene glycol) with single nanoparticle nanofluids. The research found that a single nanofluid can be replaced by a hybrid nanofluid because it enhances heat transfer. This work presented the recent developments in hybrid nanofluid preparation methods, stability factors, thermal improvement methods, current applications, and some mathematical regression analysis which is directly related to the efficiency enhancement of solar collector. This literature revealed that hybrid nanofluids have a great opportunity to enhance the efficiency of solar collector due to their noble thermophysical properties in replace of conventional heat transfer working fluids. Finally, some important problems are addressed, which must be solved for future study.

Study of the Magnetized Hybrid Nanofluid Flow through a Flat Elastic Surface with Applications in Solar Energy

“…As a result, nanofluids are a handy and efficient solution to filling this gap, as well as good for increased heat transmission. There are several benefits for employing nanofluids in solar energy, for instance [ 10 , 11 , 12 ]: Nanofluids have remarkable optical characteristics, demonstrating a strong absorption and la ow remittance in both the solar and infrared spectra. Nanofluids have a greater stability rate and an excellent absorption medium across a broad range of temperatures.…”

Global Challenges of Current Building-Integrated Solar Water Heating Technologies and Its Prospects: A Comprehensive Review

“…Many researchers have experimented with nanofluids as the working fluid within the collector pipes [50][51][52]. Nanofluids are proven to have improved the overall efficiency of the FPC itself [53]. In an indirect, closed-loop flat-plate collector solar water heating (FPC-SWH) system, flat-panel collectors absorb solar radiation from the sun and convert it to heat before transferring it to the transition fluid inside the panel's copper pipes.…”

Heat Transfer Enhancements Assessment in Hot Water Generation with Phase Change Materials (PCMs): A Review

“…This underscores the urgency of transitioning to cleaner energy sources to diminish dependence on fossil fuels, especially for vital requirements like heating water. Solar energy offers a sustainable solution to decrease conventional energy consumption, cut costs, and mitigate greenhouse gas emissions [1][2][3]. Despite the promising strides in solar energy applications, challenges persist, including intermittency, lower thermal efficiency compared to conventional sources, and temporal imbalances [4].…”

“…If the temperature rises, neither fin has a significant enhancement difference. 1 PCM is not specified/disclosed. 2 HTF is no specified/disclosed.…”

“…By reducing the capsule's size and the metal foam's porosity, a higher cover thickness is achieved, and thus, better melting time results are achieved. 1 PCM is not specified/disclosed. 2 HTF is not specified/disclosed.…”