A5073674561- Solar Thermal and Photovoltaic Systems
- Photovoltaic System Optimization Techniques
- Solar-Powered Water Purification Methods
- Building Energy and Comfort Optimization
- Solar Radiation and Photovoltaics
- Urban Heat Island Mitigation
- Phase Change Materials Research
- Heat Transfer and Optimization
- Conservation Techniques and Studies
- Wind and Air Flow Studies
- Water-Energy-Food Nexus Studies
- Greenhouse Technology and Climate Control
- Process Optimization and Integration
- Plant Water Relations and Carbon Dynamics
- Atmospheric aerosols and clouds
- Heat Transfer Mechanisms
- Irrigation Practices and Water Management
- Urban Green Space and Health
- Atmospheric Ozone and Climate
- Graphite, nuclear technology, radiation studies
- Heat Transfer and Boiling Studies
- Nuclear reactor physics and engineering
- Photovoltaic Systems and Sustainability
- Noise Effects and Management
- Advanced Surface Polishing Techniques
University of Patras
2007-2022
A numerical study was carried out to investigate charging and discharging processes of different phase change materials (PCMs) used for thermal storage in an innovative solar collector, targeting domestic hot water (DHW) requirements. The aim PCMs that meet all application requirements, considering their performance terms stored retrieved energy, outlet temperatures, flow rate. Work three flat-plate panels sizes. For each panel, a PCM tank with heat exchanger attached on the back plate....
The paper presents a design and operation analysis of an Integrated Collector Storage (ICS) solar water heater, which consists asymmetric Compound Parabolic Concentrating (CPC) reflector trough, while the tank comprises two concentric cylinders. annulus between these vessels is partially depressurized contains small amount in bottom outer vessel dominantly contributes to heat transfer from inner cylinder. A multi-criteria optimization algorithm applied re-evaluate specifications parabolic...
The present work deals with the examination of two different configurations inlet mantle connections, on a solar thermosiphon indirect heating type. In first configuration, heat transfer fluid enters upper side exchanger, while in second it lower mantle. outlet is always placed at bottom mantle, oppositively to inlet. Diurnal tests have been carried out by monitoring and temperatures, as well thermosiphonic flow rates. Also, draw-offs measurements were performed, according ISO 9459-2 EN...
The hourly ambient air temperature information was analyzed for two Greek coastal Mediterranean cities: Patras (for the entire 2018 year) with ten urban and one rural stations, Kalamata 2019 2020 years) eight stations. heating cooling Degree Hours (DH) Days (DD) were calculated, base temperatures of 18 °C 26 °C, respectively. degree hours cities observed to be 19.2% 24%, respectively, lower than that areas. Similarly, 9% 22% higher These findings indicate a distinct heat island effect in...
The ambient air urban heat island effect (at a height of 4÷4.5 m) is studied in the coastal city Patras. For this purpose, 11 fixed temperature stations have been placed chosen representative locations to monitor variations. Temperature are places: at center (intense traffic), around (moderate and rural region outside town ∼10 km). Collected data for June, July, August September 2018 examined statistically results extracted indicating that effects not very intense. An analysis temperatures...
The urban heat island effect for the coastal Mediterranean city of Kalamata is studied, June to September during two consecutive years, 2019–2020. Temperature data were gathered by fixed temperature stations, placed in representative locations, covering all major areas (urban, suburban, and rural). Results showed that area warmer than suburban rural ones. maximum intensity was also estimated, usually achieved nighttime early morning. As there are no such Kalamata, this work helps identify...