Solar PV energy: From material to use, and the most commonly used techniques to maximize the power output of PV systems: A focus on solar trackers and floating solar panels

Solar tracker error impact on linear absorbers efficiency in parabolic trough collector – Optical and thermodynamic study

Experimental outdoor performance assessment and energy efficiency of 11.28 kWp grid tied PV systems with sun tracker installed in saharan climate: A case study in Ghardaia, Algeria

In order to reduce accidents at the port of entry that may be due to weather factors, it is necessary to not only improve navigation skills but also use current advanced nautical technology to prov...

Big data analytics of safety assessment for a port of entry: A case study in Keelung Harbor:

Many studies in the literature aim to increase the amount of solar radiation falling on photovoltaic (PV) panel surface to improve its performance. Most of these studies concentrate on solar tracking systems and few studies focus on manually adjustable tilt mechanisms. However, no studies in the literature compare these two methods techno-economically. Therefore, as its main contribution, this study makes a techno-economic comparison of solar trackers and manually adjustable tilt mechanisms. First, the electricity production of fixed-tilt, manually adjustable tilt mechanisms (monthly and seasonal adjustment), and automatic solar trackers (single-axis east-west (SA-EWT), single-axis south-north (SA-SNT), and dual-axis (DAT)) systems are technically analyzed for three provinces in Turkey with different solar characteristics. After that, the systems are compared economically and evaluated over levelized cost of electricity (LCoE), discounted payback period (DPBP), and internal rate of return (IRR). Finally, a detailed sensitivity analysis is made and the impact of changes in initial investment costs and real interest rates is examined. Eventually, the payback period of fixed-tilt systems is found to be 10.3–13.3 years in Turkey. Dual-axis solar trackers provide the highest electricity production increase (30.4–34.6%) compared to fixed-tilt but with the highest payback period (16.7–24 years) among all alternatives. Monthly manual tilt adjustment provides the most feasible solution by decreasing the payback period of fixed-tilt systems by around 8 months to 9.6–12.6 years and with an electricity production increase of 3.6–5%. • Techno-economic comparison of manual tilt adjustment and automatic solar tracking. • The most feasible alternative is monthly manual tilt adjustment. • Payback period of fixed-tilt system is 10.3–13.3 years in Turkey. • Monthly tilting increases production by 3.6–5%, payback period is 9.6–12.6 years. • 2-axis tracker increases production by 30.4–34.6%, payback period is 16.7–24 years. 

A comparative techno-economic assessment of manually adjustable tilt mechanisms and automatic solar trackers for behind-the-meter PV applications

Dual-axis solar tracker with satellite compass and inclinometer for automatic positioning and tracking

The purpose of this study is to develop a model to evaluate navigation safety for vessels sailing to Taiwanese commercial harbours, based on a dataset of marine casualties. In order to devise the practical model, linear programming and Data Envelopment Analysis (DEA) are applied to develop a DEA model algorithm. Firsly, a simplified DEA model structure is constructed with one input variable, eleven output variables and four decision-making units (DMUs). Then, a dataset of marine casualties are employed to obtain all variables, as well as to appraise the superiorities of all DMUs. Finally, utilising a DEA solver, the highest navigation safety for the DMUs can be evaluated. Furthermore, an empirical survey of navigation safety in Taiwanese commercial harbours is performed to appraise the systematic approach, ie, the DEA model. The results of this study show that: (1) Keelung and Kaohsiung are the most dangerous harbours; (2) Taiwan’s safest commercial harbour is Haulien, followed in ranking by Taichung, Kao...

Hui-Chiao Wang

Papers

Dual-axis solar tracker with satellite compass and inclinometer for automatic positioning and tracking

Evaluating navigation safety for harbours in Taiwan:An empirical study