Performance modeling of PVT collectors: Implementation, validation and parameter identification approach using TRNSYS

Jonas, Danny; Lämmle, Manuel; Theis, Danjana; Schneider, Sebastian; Frey, Georg

doi:10.1016/j.solener.2019.09.047

Cited by 53 publications

(20 citation statements)

References 14 publications

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“…The overall electrical efficiency η ref , electrical power output P el , and specific electrical power output p el can be calculated using the following equations 18 :…”

Section: Electrical Performance Model Of Pvtmentioning

confidence: 99%

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Numerical simulation of geothermal‐PVT hybrid system with PCM storage tank

Kamazani

Aghanajafi

2021

Intl J of Energy Research

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As the increase in greenhouse emissions, climate changes, and other irreversible repercussions stems from environmentally destructive energies such as fossil fuels, exploiting solar and geothermal energy as unlimited clean sources of energy in the renewable energy technologies can survive the planet earth, which is facing a catastrophe on a global scale. The main purpose of this research is to study Techno analysis of the combined ground source heat pump (GSHP) and photovoltaic thermal collectors (PVTs) with a "phase-change material" (PCM) storage tank to fulfill the energy demands of a residential building. In the first step of this study, in order to model the heat pump behavior in multi-usage operation modes (heating and cooling), a numerical transient simulation of a water-to-water GSHP, which includes a vertical U-type ground source heat exchanger (GSHX) and a variable speed drive (VSD) compressor, was conducted by developing a numerical code in Engineering Equation Solver software. To study the thermodynamic aspect of the hybrid system in terms of exergy and energy, a transient numerical simulation was accomplished using the TRNSYS program. Also, the impact of effective characteristics of ingredients such as areas of PVT panels and the volume of the storage tank of PCMs on the performance of the hybrid system are investigated. On top of that, the two types of the GSHP-PVT-PCMs and GSHP-PV from the energy and exergy points of view are compared. The obtained results demonstrate that the irreversibility of the solar modules of the GSHP-PVT-PCMs is 6.6% lower than that of the GSHP-PV. Furthermore, the calculation of the annual required load of the building for these two kinds of hybrid systems shows that the use of collectors in this combined system has reduced the total load of the building by 6.5%. The use of collectors in the GSHP-PVT-PCM gives rise to a difference in the value of solar factor (SF) of this system by 1.4% more than the one for the hybrid system without thermal collectors.

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“…The overall electrical efficiency η ref , electrical power output P el , and specific electrical power output p el can be calculated using the following equations 18 :…”

Section: Electrical Performance Model Of Pvtmentioning

confidence: 99%

“…where η el,ref denotes the electrical efficiency at reference conditions, PR tot is the overall performance ratio, G expresses the overall radiation on PVT surface, and A PVT represents the gross PVT collector area. 18 The overall performance ratio is obtained by multiplying three kinds of losses 18 :…”

Section: Electrical Performance Model Of Pvtmentioning

confidence: 99%

Numerical simulation of geothermal‐PVT hybrid system with PCM storage tank

Kamazani

Aghanajafi

2021

Intl J of Energy Research

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“…This is a very similar approach to the one used in Section 2.2.1.3, with an increase on the level of detail due to the consideration of multiple layer temperatures. [D. Jonas et al 2019])…”

Section: Analytical Model (Based On Contribution By M Herrando)mentioning

confidence: 99%

Status Quo of PVT Characterization

Kramer¹,

Amrizal²,

Beyssac³

et al. 2020

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Report B1: This report therefore aims at displaying the Status Quo of PVT Characterization in order to support PVT technology in its further development and applications. The report is hence of interest for researchers as well as public and private sector stakeholders. A key finding is that the reliability and durability of PVT modules are especially challenged at elevated temperatures and higher humidity loads. The test methods available from the IEC and ISO standards are covering the specifics of PV and ST module’s, most of which are similar for PVT modules, too.

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“…Energy simulation software known as TRNSYS [84] was used to model and perform dynamic simulation of the energy systems. This simulation software is widely used by the scientific community, for instance, in [85,86] and validated by the Drake landing community, Canada [47]. In TRNSYS, the modules used were as follows: photovoltaic (TYPE 194), heat pump (TYPE 668), tank (TYPE 543), borehole thermal energy storage (TYPE 557a), control of set points (TYPE 2b), temperature control (TYPE 11f), and weather data (TYPE 15).…”

Section: Simulation Of Energy Systemsmentioning

confidence: 99%

EU Emission Targets of 2050: Costs and CO2 Emissions Comparison of Three Different Solar and Heat Pump-Based Community-Level District Heating Systems in Nordic Conditions

et al. 2020

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In Finland, old apartments (1980s) contribute toward emissions. The objective is to reduce CO2 emissions to reach Europe’s targets of 2050. Three different centralized solar-based district heating systems integrated either with non-renovated or renovated old buildings in the community were simulated and compared against the reference city-level district heating system. The three proposed centralized systems were: Case 1: photovoltaic (PV) with a ground source heat pump (GSHP); Case 2: PV with an air-water heat pump (A2WHP); and Case 3: PV with A2WHPs, seasonal storage, and GSHPs. TRNSYS simulation software was used for dynamic simulation of the systems. Life cycle cost (LCC), CO2 emissions and purchased electricity were calculated and compared. The results show that the community-level district heating system (Case 3) outperformed Case 1, Case 2, and the city-level district heating. With non-renovated buildings, the relative emissions reduction was 83% when the reference energy system was replaced with Case 3 and the emissions reduction cost was 3.74 €/kg.CO2/yr. The relative emissions reduction was 91% when the buildings were deep renovated and integrated with Case 3 when compared to the reference system with non-renovated buildings and the emission reduction cost was 11.9 €/kg.CO2/yr. Such district heating systems could help in meeting Europe’s emissions target for 2050.

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Performance modeling of PVT collectors: Implementation, validation and parameter identification approach using TRNSYS

Cited by 53 publications

References 14 publications

Numerical simulation of geothermal‐PVT hybrid system with PCM storage tank

Numerical simulation of geothermal‐PVT hybrid system with PCM storage tank

Status Quo of PVT Characterization

EU Emission Targets of 2050: Costs and CO2 Emissions Comparison of Three Different Solar and Heat Pump-Based Community-Level District Heating Systems in Nordic Conditions

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