Using Static Concentrator Technology to Achieve Global Energy Goal
Abstract
:1. Introduction
2. Target, Materials and Methods
3. Solar Concentrator: A Historic Overview
4. Low Concentrating Photovoltaics: Technology Overview
4.1. Compound Parabolic Concentrator
4.2. V-trough Solar Concentrator
4.3. Elliptical Concentrators
4.4. Luminescent Concentrating Systems
4.4.1. Luminescent Solar Concentrator
4.4.2. Quantum Dot Solar Concentrator
5. Discussions
6. Conclusions
- Despite the SDG 7 goal to provide access to affordable energy for all by 2030, the IEA predicts that 700 million people will still lack access to electricity by 2030, significantly compromising their quality of life.
- Global initiatives such as the African Renewable Energy initiative (AREI) and the UN’s Sustainable Energy for All initiative will play a great part in accelerating the adoption of solar energy, which is predicted to generate 13% of the world’s electricity by 2030.
- Although the cost of solar panels reaching a low of $0.71/W in China, the technology is still considered prohibitively expensive in developing countries that lack the economies of scale.
- Solar concentrators can potentially reduce the cost of solar installations by 36.5% by replacing expensive PV material with cheaper reflective or refractive material. Static concentrators are particularly promising as they can operate without tracking thus reducing maintenance and cost demands.
- CPCs offer high acceptance angle but suffer from irradiance distribution and increases in temperature. Nanofluids are gauging increasing interest as solution to reduce the gain within solar concentrators, but they are still not economically feasible and are not suitable for turbulent cooling.
- V-trough concentrators can operate without tilt adjustment given a concentration ratio below 2X but they suffer from non-uniform illumination most of the year
- LSCs do not suffer from hot spots like CPC but they have significantly lower efficiency than the other reviewed concentrators because of the presence of losses due to escape cone, reflection on the surface, larger optical path, scattering, and reabsorption.
- This paper argues that static solar concentrators can help achieve the SDG 7 goal by 2030 by reducing the cost of solar, which make it economically and financially sustainable. The LCA studies also indicated that the CPV has much lower embodied energy requirement during manufacturing process and produces much lower CO2 emission throughout their life time when compared with the traditional PV system, making the system more desirable.
- However, many challenges such as the irradiance distribution in CPC, the non-uniform illumination in V-trough and low efficiencies of luminescent concentrators need to be overcome if concentrators are to truly offer a more cost-effective solution than standard PV panels. A comprehensive economic, social and technical overview of static solar concentrator and their potential to help achieved SDG 7 goals is provided here to support this viewpoint.
Author Contributions
Funding
Conflicts of Interest
References
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Project | Location | Capacity (MW) |
---|---|---|
Golmud 2 | Golmud, China | 79.83 |
Golmud 1 | Golmud, China | 57.96 |
Touwsrivier | Touwsrivier, South Africa | 44.19 |
Alamosa Solar Project | Colorado, USA | 35.28 |
Hami Phase II | Hami, China | 5.88 |
Year | Author(s) | Type of CPC | Findings |
---|---|---|---|
2012 | Su et al. [62] | 2-D Lens walled CPC | Looking at the monthly accumulated solar energy collection, the lens-walled CPC was able to achieve 20 to 30% larger than mirror CPC. |
2013 | Sellami and Mallick [74] | 3-D CCPC | The experimental results deviated from the simulation by 12%. During the experiment, the designed CCPC was able to concentrate the sunlight for 5 h with an optical efficiency of more than 80% providing an optical concentration of 2.88. |
2014 | Abu-Bakar et al. [57] | 3-D RACPC | The optical concentration gain increases as the height of the concentrator was increased, however, it showed a negative effect on the acceptance angle. The predicted annual power output from the system was about 220 kWh per year showing that the system increased the electricity output by 3.25 times. |
2014 | Li et al. [63] | Lens walled with air Gap (2-D) | It was observed that the fill factor of the mirror CPC dropped more drastically than lens-walled CPC with air gap after the incident angles were greater than 14.5°. The flux distribution in both the lens-walled and lens-walled with air gap showed improvement. |
2017 | Xuan et al. [64] | ALCPC | An asymmetric lens-walled CPC with a geometrical concentration ratio of 2.4 was tested. Maximum power output and short circuit current were 1.74 and 1.67 times higher than a bare cell respectively. |
2018 | Lu et al. [65] | BFI-ACP-PV | A building façade integrated asymmetric parabolic photovoltaic concentrator with a geometric concentration ratio of 2.0 and wide acceptance half angles of 0° and 55°. Electrical conversion that is higher by 5% and 10% at solar irradiance of 280 W/m2 and 670 W/m2 respectively compared to a system without PCM (phase change material). |
2019 | Tian et al. [73] | dCCPC | A dielectric CCPC with an inner, outer half-acceptance angles and refractive index of 14.47°, 22.02° and 1.49 respectively was tested. Total energy savings in buildings reached up to 13%, 10% and 5% in hot, continental and cold climates respectively. |
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Alamoudi, A.; Saaduddin, S.M.; Munir, A.B.; Muhammad-Sukki, F.; Abu-Bakar, S.H.; Mohd Yasin, S.H.; Karim, R.; Bani, N.A.; Abubakar Mas’ud, A.; Ardila-Rey, J.A.; et al. Using Static Concentrator Technology to Achieve Global Energy Goal. Sustainability 2019, 11, 3056. https://0-doi-org.brum.beds.ac.uk/10.3390/su11113056
Alamoudi A, Saaduddin SM, Munir AB, Muhammad-Sukki F, Abu-Bakar SH, Mohd Yasin SH, Karim R, Bani NA, Abubakar Mas’ud A, Ardila-Rey JA, et al. Using Static Concentrator Technology to Achieve Global Energy Goal. Sustainability. 2019; 11(11):3056. https://0-doi-org.brum.beds.ac.uk/10.3390/su11113056
Chicago/Turabian StyleAlamoudi, Abdullah, Syed Muhammad Saaduddin, Abu Bakar Munir, Firdaus Muhammad-Sukki, Siti Hawa Abu-Bakar, Siti Hajar Mohd Yasin, Ridoan Karim, Nurul Aini Bani, Abdullahi Abubakar Mas’ud, Jorge Alfredo Ardila-Rey, and et al. 2019. "Using Static Concentrator Technology to Achieve Global Energy Goal" Sustainability 11, no. 11: 3056. https://0-doi-org.brum.beds.ac.uk/10.3390/su11113056