Design and Performance of a Small Hybrid Solar Collector

Zielinski, Alex; Dillon, Heather; Baldwin, Becca; Forinash, Caitlin; Zada, Kyle R.; Stillinger, Chad; Dieter, Keaton

doi:10.1115/power2016-59098

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…This design iteration was expected to have a higher efficiency and better performance than the previous design documented by Zielinski et al [13]. Results…”

Section: Discussionmentioning

confidence: 80%

“…In the summer of 2015, the hybrid solar system was redesigned, from a prior version documented by Zielinksi [13] [14]. Multiple changes were implemented in the modified system.…”

Section: Hybrid-solar Collector Designmentioning

confidence: 99%

“…Effect of temperature change on second law efficiency (ε).testing to reach its peak performance. The flow remained at a fixed flow rate for all testing based on experimental work done by Zielinski, et al[13]. Zielinski, et al found that the collector was most efficient when its flow rate was at its lowest, around 0.001 liters/second.…”

mentioning

confidence: 99%

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Performance and Optimization of a Small Hybrid Solar-Thermal Collector

LeBar¹,

Dillon²

2018

SGRE

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A hybrid solar collector was designed to investigate the effects of combining two different solar collector techniques on the overall collector's effectiveness. While most solar collectors focus only on one solar collection method, the small hybrid system uses a flat plate collector in conjunction with five evacuated tubes to absorb the most energy possible from both direct and diffuse solar radiation. Data was collected over four months while the system operated at different flow rates and with various levels of available insolation from the sun to evaluate the performance of the solar collector. To understand the relative contribution of the flat plate collector and the evacuated tubes, temperature differences across each part of the system were measured. The results indicate the average first law efficiency of the hybrid system is 43.3%, significantly higher than the performance of the flat plate alone. An exergy analysis was performed for this system to assess the performance of the flat plate system by itself. Results of the second law analysis were comparable to the exergetic efficiencies of other experimental collectors, around 4%. Though the efficiencies were in the expected range, they reveal that further improvements to the system are possible.

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“…This design iteration was expected to have a higher efficiency and better performance than the previous design documented by Zielinski et al [13]. Results…”

Section: Discussionmentioning

confidence: 80%

“…In the summer of 2015, the hybrid solar system was redesigned, from a prior version documented by Zielinksi [13] [14]. Multiple changes were implemented in the modified system.…”

Section: Hybrid-solar Collector Designmentioning

confidence: 99%

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Performance and Optimization of a Small Hybrid Solar-Thermal Collector

LeBar¹,

Dillon²

2018

SGRE

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“…In the last decade, researchers have made considerable efforts to enhance the thermal performance of ETC by combining various devices [183][184][185], by modifying its applicability [186,187], etc. Bataineh and AL-Karasneh [187] studied and investigated the system performance numerically for direct steam generation in ETC.…”

Section: Solar Trackingmentioning

confidence: 99%

Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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Since it is highly correlated with quality of life, the demand for energy continues to increase as the global population grows and modernizes. Although there has been significant impetus to move away from reliance on fossil fuels for decades (e.g., localized pollution and climate change), solar energy has only recently taken on a non-negligible role in the global production of energy. The photovoltaics (PV) industry has many of the same electronics packaging challenges as the semiconductor industry, because in both cases, high temperatures lead to lowering of the system performance. Also, there are several technologies, which can harvest solar energy solely as heat. Advances in these technologies (e.g., solar selective coatings, design optimizations, and improvement in materials) have also kept the solar thermal market growing in recent years (albeit not nearly as rapidly as PV). This paper presents a review on how heat is managed in solar thermal and PV systems, with a focus on the recent developments for technologies, which can harvest heat to meet global energy demands. It also briefs about possible ways to resolve the challenges or difficulties existing in solar collectors like solar selectivity, thermal stability, etc. As a key enabling technology for reducing radiation heat losses in these devices, the focus of this paper is to discuss the ongoing advances in solar selective coatings and working fluids, which could potentially be used in tandem to filter out or recover the heat that is wasted from PVs. Among the reviewed solar selective coatings, recent advances in selective coating categories like dielectric-metal-dielectric (DMD), multilayered, and cermet-based coatings are considered. In addition, the effects of characteristic changes in glazing, absorber geometry, and solar tracking systems on the performance of solar collectors are also reviewed. A discussion of how these fundamental technological advances could be incorporated with PVs is included as well.

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