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

Olczak, Piotr; Matuszewska, Dominika; Zabagło, J.

doi:10.3390/en13071829

Cited by 31 publications

(13 citation statements)

References 37 publications

(45 reference statements)

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“…They investigated the effect of the weather conditions and operating parameters on the thermal performance of the evacuated tube solar collector. Olczak et al [25] carried out a comparison study of solar energy gaining effectiveness between flat plate collectors and evacuated tube collectors with heat pipe. Greco et al [26] carried out a comparison study TRNSYS software, using of the energy performances of flatplate collectors (fpcs) and evacuated-tube collectors (etcs) in domestic solar water heating systems located in different climate areas Their Investigations were carried out on single fpcs and etcs and also for strings of four panels connected in series.…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation of Flat Plate and Evacuated Tube Collectors under Jordan Climate Conditions Using TRNSYS Software

Al-Odat¹,

Rawashedsh²,

Al-Hasan³

2021

MMEP

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The performance of the Flat Plate Collector (FPC) and Evacuated Tube Collector (ETC) for domestic hot water applications under Jordan climate conditions was theoretically investigated using TRNSYS software. The presented simulation model can provide a long-term evaluation of system performance at different weather conditions. This simulation was carried out during 24 hours in 21 June, is considered as a hot climate and 21 January is considered as a cold climate; under the meteorological conditions of both Irbid and Aqaba cities in Jordan. The inlet water temperature of the first collector, collector area, water flow rate and tilt angle were considered 15℃, 2.04 m2, 0.0139 kg/s and 45 degrees respectively. The outlet temperature of each collector was considered as the inlet of the previous collector. Three collectors in series were applied to increase the output temperature up to 90-100℃. The results showed that TE increased with the decrease in the inlet temperature, which means the useful energy gain (Qu) of the first collector is greater than the 2nd and the 3rdcollector. The useful energy gain (Qu) of ETC is greater than of FPC, and the useful energy gain (Qu) of cold climate is less than hot climate. The output temperature of ETCs is greater than that of FPCs for Irbid city in cold and hot climate. Furthermore, for Aqaba in cold climate and in hot climate the outlet temperature of ETCs is higher than FPCs. Additionally, the daily thermal performance of the ETCs is significantly better than the FPCs in cold climate. Meanwhile, thermal performance of both collectors are close in a hot climate.

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Section: Introductionmentioning

confidence: 99%

Performance Investigation of Flat Plate and Evacuated Tube Collectors under Jordan Climate Conditions Using TRNSYS Software

Al-Odat¹,

Rawashedsh²,

Al-Hasan³

2021

MMEP

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“…A literature review shows that existing studies focus primarily on comparing, in terms of energy, vacuum collectors with flat collectors [64][65][66][67][68][69][70][71][72][73][74]. In the majority of instances, the evacuated tube collector exhibits better efficiency compared to the flat collector.…”

Section: Introductionmentioning

confidence: 99%

“…Although the presented methods could be more attractive than LCA owing to the simplicity of approach, yet they include only one index, which might result in an excessive simplification of the analysis made. A considerable number of works related to environmental analysis include comparison of the evacuated tube collector with the flat collector [64][65][66][67][68][69][70]73]. The results show that, for the majority of cases examined, the vacuum collector system is more environmentally friendly than the flat collector system.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of the Use of Phase Change Material in an Evacuated Solar Tube Collector

Jachura

Sekret

2021

Energies

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This paper presents an environmental impact assessment of the entire cycle of existence of the tube-vacuum solar collector prototype. The innovativeness of the solution involved using a phase change material as a heat-storing material, which was placed inside the collector’s tubes-vacuum. The PCM used in this study was paraffin. The system boundaries contained three phases: production, operation (use phase), and disposal. An ecological life cycle assessment was carried out using the SimaPro software. To compare the environmental impact of heat storage, the amount of heat generated for 15 years, starting from the beginning of a solar installation for preparing domestic hot water for a single-family residential building, was considered the functional unit. Assuming comparable production methods for individual elements of the ETC and waste management scenarios, the reduction in harmful effects on the environment by introducing a PCM that stores heat inside the ETC ranges from 17 to 24%. The performed analyses have also shown that the method itself of manufacturing the materials used for the construction of the solar collector and the choice of the scenario of the disposal of waste during decommissioning the solar collector all play an important role in its environmental assessment. With an increase in the application of the advanced technologies of materials manufacturing and an increase in the amount of waste subjected to recycling, the degree of the solar collector’s environmental impact decreased by 82% compared to its standard manufacture and disposal.

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“…Although the price of ETCs can be a limiting factor, this technology is increasingly used instead of FPCs because ETCs are better at maintaining the recovered heat. However, relatively speaking, ETCs are more expensive than FPCs [8].…”

Section: Introductionmentioning

confidence: 99%

“…In Turkey, the United States, Mexico and China, FPCs account for 99.0%, 86.0%, 36.0%, and 5.0% of all STCs, respectively [9][10][11]. The improved performance of ETCs is particularly noticeable in cold and cloudy climates [8]; in summer, with seasonal climates such as that in Lithuania, the two types of collectors can produce similar amounts of energy [7]. Ayompe et al [12] concluded that for a domestic system, ETCs are approximately 23.0% more efficient than FPCs.…”

Section: Introductionmentioning

confidence: 99%

Residential Solar Thermal Performance Considering Self-Shading Incidence between Tubes in Evacuated Tube and Flat Plate Collectors

et al. 2021

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The performance of solar thermal technology under high-altitude equatorial climatic and solar path conditions has not been determined. Evacuated tube solar collectors are more efficient than flat plate collectors in cold and cloudy regions; however, due to their dependence on orientation, the irradiation incidence between the tubes of these collectors can be blocked. In this study, the performance of these types of collectors was analyzed to determine the implications of their orientation under these specific climate conditions. Four solar thermal systems were installed: two of the systems used evacuated tube collectors, and two used flat plate collectors. Each collector was connected to storage and discharge points to simulate residential consumption when observing the real performance of the four systems in terms of irradiation availability. The evacuated tube collectors were more efficient and reduced the backup energy requirement by up to 20.6% more on average than the flat plate collectors. In addition, the performance of the evacuated tube collectors increased by up to 9.8% when the tubes were arranged parallel to the solar path, compared to when they were arranged perpendicular to the solar path, verifying that the blockage effect is an important parameter to consider for evacuated tube technology. The main novelty of this research is the comparison of these two technologies under different orientations, with perpendicular and parallel dispositions toward the solar path, in a high-altitude equatorial location where solar collectors are not typically oriented in any particular orientation. To the best of our knowledge, this is the first complete analysis of real systems deployed under these conditions.

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

Cited by 31 publications

References 37 publications

Performance Investigation of Flat Plate and Evacuated Tube Collectors under Jordan Climate Conditions Using TRNSYS Software

Performance Investigation of Flat Plate and Evacuated Tube Collectors under Jordan Climate Conditions Using TRNSYS Software

Life Cycle Assessment of the Use of Phase Change Material in an Evacuated Solar Tube Collector

Residential Solar Thermal Performance Considering Self-Shading Incidence between Tubes in Evacuated Tube and Flat Plate Collectors

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