Effect analysis of the different channel length and depth of photovoltaic thermal system with ∇-groove collector

The converted Solar energy as electrical and thermal energy was named photovoltaic thermal (PVT). The aim of this study is to the analysis of different length and depth channel effect of photovoltaic thermal with ∇-groove collector by a mathematical model. The matrix inversion was used to analyze the energy balance equation. Simulation results were conducted below the solar intensity of 800 W/m2 and mass flow rate between 0.0069 kg/s and 0.0491 kg/s. Electrical and thermal efficiency was done to assess the effect of different length and channel depth of PVT system with ∇-groove collector. The effect of different length and depth of ∇-groove collector for electrical and thermal performance is caused by changed mass flow rate. The effect Increasing of the mass flow rate of collector increased the thermal and electrical performance of the ∇-groove collector.

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Thermal and Cost Analysis of a Multi-Pass Solar Air Heater with Reversed Absorber and Reflector

International Journal for Research in Engineering Application & Management ◽

10.35291/2454-9150.2020.0379 ◽

2020 ◽

pp. 141-146

Keyword(s):

Cost Analysis ◽

Mass Flow Rate ◽

Mass Flow ◽

Flow Rate ◽

Cost Effective ◽

Solar Air Heater ◽

Constant Mass ◽

Air Heater ◽

Effectiveness Model ◽

Solar Intensity

Solar air heater is a major component of solar dryer. A model of multi pass solar air heater (MPSAH) with reversed absorber and reflector was developed. Exhaustive Study over the performance of MPSAH with and without reversed absorber and cost analysis was done. The performance curves show the effect of solar intensity on MPSAH with and without reversed absorber at constant mass flow. It was observed that the thermal efficiency of MPSAH is depending on solar intensity and losses when mass flow rate remain constant. At constant mass flow rate 26.90 gm/sec, the collector efficiency increased by 9% at average solar intensity 457w/m². Theoretical and experimental analysis showed close agreement. In addition the cost-effectiveness model has been used to examine the performance MPSAH with and without reverse absorbers. The air heaters annual cost (AC) estimation and annual power acquirement (AG) was analyze. The result is evidence for that multi-pass solar air heater with reverse absorbers and reflector is more cost-effective than multi-pass solar collectors without reverse absorber.

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Improvement Potential and Exergy Analyses of Photovoltaic Thermal with and without ∇-absorber Collector

International Journal of Power Electronics and Drive Systems (IJPEDS) ◽

10.11591/ijpeds.v9.i4.pp1792-1798 ◽

2018 ◽

Vol 9 (4) ◽

pp. 1792

Author(s):

Saprizal Hadisaputra ◽

Muhammad Zohri ◽

Hardani Hardani ◽

Ahmad Fudholi

Keyword(s):

Mass Flow Rate ◽

Mass Flow ◽

Flow Rate ◽

Photovoltaic System ◽

Photovoltaic Panel ◽

Hot Air ◽

Improvement Potential ◽

Photovoltaic Thermal System ◽

National University ◽

Exergy Analyses

The combination of a solar thermal and photovoltaic system is called photovoltaic thermal system (PVT). The PVT system with and without -absorber has been intended to harvest both hot air and electricity. The hot air that is produced is used in the cooling process of the photovoltaic panel and then to improve the efficiency of the photovoltaic panel. The experimental investigation was conducted at the mass flow rate from 0.0069 kg/s to 0.0491 kg/s and solar radiation of 522 W/m2 and 820 W/m2 in the National University of Malaysia. The using -absorber collector increases exergy and exergy efficiency of PVT system. The improvement potential comparatively upsurges with cumulative the mass flow rate.

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Process-Consistency in Additive Printed Multilayer Substrates With Offset-Vias Using Aerosol Jet Technology

ASME 2020 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems ◽

10.1115/ipack2020-2680 ◽

2020 ◽

Author(s):

Pradeep Lall ◽

Kartik Goyal ◽

Scott Miller

Keyword(s):

Mass Flow Rate ◽

Mass Flow ◽

Process Parameters ◽

Flow Rate ◽

Printed Electronics ◽

Mechanical Performance ◽

High Volume ◽

Electrical Performance ◽

Load To Failure ◽

High Volume Production

Abstract The transition of additive printed electronics into high-volume production requires process consistency to allow quality control of the manufactured product. Process recipes are needed for multilayer substrates with z-axis interconnects in order to enable complex systems. In this paper, process recipes have been developed through fundamental studies of the interactions between the process parameters and the mechanical-electrical performance achieved for multilayer substrates. The study reported in this paper focuses on printed vias also known as donut vias. Aerosol jet process parameters studied include carrier mass flow rate, sheath mass flow rate, exhaust mass flow rate, print speed, number of passes, sintering time and temperature, uv-intensity for uv-cure, and standoff height. The electrical performance has been quantified through the measurements of resistance. The mechanical performance has been quantified through measurement of shear load-to-failure. The effect of sequential build-up on the mechanical-electrical properties vs process parameters have been quantified for up tp 8-layers designs. The performance of 5-layer and 8-layer additively printed substrate designs and effect of multiple vias has been compared to assess process consistency.

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