Technical and economic feasibility of solar flat-plate collector thermal energy systems for small and medium manufacturers

Karki, Saroj; Haapala, Karl R.; Fronk, Brian M.

doi:10.1016/j.apenergy.2019.113649

Cited by 53 publications

(20 citation statements)

References 23 publications

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“…Usually, a mixture of water and glycol is mainly used for DHW and to partly cover the heating energy demand of a building. Systems should be able to provide the required heat demand at low and medium-temperature ranges, from 40 to 80 • C, which corresponds to the largest share of heat consumption in DHW and space heating [6,7]. Therefore, the solar collectors are the key elements of the solar thermal systems because the collector technology should be able to meet the application needs at the lowest cost [6].…”

Section: Technology Backgroundmentioning

confidence: 99%

“…Systems should be able to provide the required heat demand at low and medium-temperature ranges, from 40 to 80 • C, which corresponds to the largest share of heat consumption in DHW and space heating [6,7]. Therefore, the solar collectors are the key elements of the solar thermal systems because the collector technology should be able to meet the application needs at the lowest cost [6]. The thermal collector converts the solar radiation in thermal energy, which is further transferred to a thermal fluid circulating through the panel.…”

Section: Technology Backgroundmentioning

confidence: 99%

“…The system was sized considering distinct weather conditions (ambient temperature and solar radiation intensity). Marion et al [21] developed a theoretical model in which 2), hydraulic pump (3), solar controller (4), auxiliary water heater (5), valve (6), temperature sensors (7); (b) with forced circulation of the water with antifreeze, expansion vessel (8), and heat exchanger (9) to separate the domestic hot water circuit from the solar.…”

Section: Brief Literature Reviewmentioning

confidence: 99%

“…Some of those models are based on thermal-economic analysis that combines thermodynamic and economic principles to assess the costs of energy production of power plant components [32,33]. Karki et al [6] presented a simplified model to assess a solar flat-plate collector energy system performance based on a modified f-chart implementation that accounts the amount of energy collected. The model also includes system cost determination.…”

Section: Brief Literature Reviewmentioning

confidence: 99%

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Multi-Objective Optimization of Solar Thermal Systems Applied to Portuguese Dwellings

et al. 2020

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Solar thermal systems have been widely used to increase energy efficiency in the building sector, since the use of renewable energy sources became one of the top priorities to meet environmental targets. The main objective of this study is the thermo-economic optimization of solar thermal systems for residential building applications, considering a multi-objective approach. The simulations were performed through a MatLab code by implementing an elitist variant of Non-dominated Sorting Genetic Algorithm-II (NASGA-II). The solar collection area and the linear loss coefficient as well as the tank storage volume were defined as decision variables. A two-dimensional Pareto front was obtained, considering as objective functions the minimization of the annualized investment cost and the maximization of the solar collection efficiency. Based on the best trade-off between both objectives and considering that the solar thermal systems can operate for a period of at least 15 years, the Pareto analysis led to the conclusion that a system with an annualized investment cost between 270 and 280 €/year allows reaching a collection efficiency of 60%. After the analysis of the optimal solution points, a configuration was selected to estimate the system total purchasing cost: a panel with a solar area of 4.17 m2 and with a linear coefficient loss of 3.684 W/m2.K; a storage volume of 0.275 m3; and a pump flow rate of 0.1364 m3/h. For this configuration, we estimated a total purchasing cost of 2545.0 €, whereas the solar collector and the storage tank are the most expensive components, representing a share of 42% and 43%, respectively. These results represent a specific cost of 610.3 €/m2 per solar collection area.

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Section: Technology Backgroundmentioning

confidence: 99%

Section: Technology Backgroundmentioning

confidence: 99%

Section: Brief Literature Reviewmentioning

confidence: 99%

Section: Brief Literature Reviewmentioning

confidence: 99%

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Multi-Objective Optimization of Solar Thermal Systems Applied to Portuguese Dwellings

et al. 2020

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“…Mostly efficient energy buildings are oriented and designed to capture irradiance from different directions [23,24]. Even though solar systems for hot water heating are a proven technology with reliable performance, their implementation conditions are still more favorable in the industrial sector than in the residential one [25]. This is because, for residential purposes, solar thermal systems are limited to usage for the need of hot water preparation and space heating, while industry applications have greater possibilities regarding the integration of solar thermal systems.…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study

2020

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In Poland, various solar collector systems are used; among them, the most popular are flat plate collectors (FPCs) and evacuated tube collectors (ETCs). The work presents two installations located at a distance of 80 km apart, working in similar external conditions. One of them contains 120 flat plate collectors and works for the preparation of hot water in a swimming pool building; the second one consists of 32 evacuated tube collectors with a heat pipe and supports the preparation of domestic hot water for a multi-family house. During the comparison of the two quite large solar installations, it was confirmed that the use of evacuated tube solar collectors shows a much better solar energy productivity than flat plate collectors for the absorber area. Higher heat solar gains (by 7.9%) were also observed in the case of the gross collector area. The advantages of evacuated tube collectors are observed mainly during colder periods, which allows for a steadier thermal energy production.

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Applications in Renewable Energy

Józsa

Kovács

2019

Power Systems

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Technical and economic feasibility of solar flat-plate collector thermal energy systems for small and medium manufacturers

Cited by 53 publications

References 23 publications

Multi-Objective Optimization of Solar Thermal Systems Applied to Portuguese Dwellings

Multi-Objective Optimization of Solar Thermal Systems Applied to Portuguese Dwellings

The Comparison of Solar Energy Gaining Effectiveness between Flat Plate Collectors and Evacuated Tube Collectors with Heat Pipe: Case Study

Applications in Renewable Energy

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