Piezoelectric vibration energy harvesting from airflow in HVAC (Heating Ventilation and Air Conditioning) systems [PDF]
, 2017 This study focuses on the design and wind tunnel testing of a high efficiency Energy Harvesting device, based on piezoelectric materials, with possible applications for the sustainability of smart buildings, structures and infrastructures.
Bontempi, Franco +2 more
core +1 more source
Optimization of operation times of a heating system in office building
Journal of Asian Architecture and Building Engineering, 2020 A method is proposed for optimizing the operation times of a heating system in an office building for saving energy. The method involves determining the optimal start and stop times of the heating system by using an optimized artificial neural network ...
Inho Yang
doaj +1 more source
IAQ in Conference Room whit Surveys [PDF]
E3S Web of Conferences, 2019 The work presents three basic air pollutants in the room, degrading the indoor air quality. The only source of pollution in the analysed room are people.
Gładyszewska-Fiedoruk Katarzyna
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Very long distance connection of gigawatt size offshore wind farms: extra high-voltage ac versus high-voltage dc cost comparison [PDF]
, 2016 This study presents a cost comparison between commercially available high-voltage DC (HVDC) and extra high-voltage AC shore connection (±320 kV voltage source converter and 420 kV-50 Hz single-core and three-core cables), for a 1 GW offshore wind farm ...
LAURIA, Stefano +3 more
core +1 more source
Comparative Investigation of the Energy Efficiency of Mini-Split Air Conditioning with Variable Refrigerant Flow Systems for Office Buildings in Hot Climate. [PDF]
JES: Journal of Engineering SciencesEgypt is confronted with a critical issue of increasing electricity consumption, mainly attributable to the extensive usage of air conditioning equipment, especially in areas with high temperatures and dry circumstances such as Aswan city.
Ahmed Hussien, Ahmed Ali, Ibrahim Ismail
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Electrical tree degradation in high-voltage cable insulation: progress and challenges
High Voltage, 2020 High-voltage direct current (HVDC) and high-voltage alternating current (HVAC) cables are the most important equipment for high-voltage, large-capacity and long-distance power transmission. Electrical tree is a pre-breakdown phenomenon leading to failure
Jingang Su +4 more
doaj +1 more source
Numerical laminar forced convection modelling in a ceramic and concrete solar collector with non-circular duct [PDF]
E3S Web of Conferences, 2019 The paper presents simulations of laminar forced convection in non-circular piping of flat solar collectors made of ceramics or concrete, which are characterized by a low thermal conduction coefficient.
Teleszewski Tomasz Janusz
doaj +1 more source
Analysis of building energy upgrade technologies for implementing the dual energy efficiency and demand response scheme for non-residential buildings [PDF]
, 2019 The continuous growth of renewable energy and the transition to a more de-centralised electricity generation adds significant complexity to balance power supply and demand in the grid.
Bucur, Mircea +7 more
core +2 more sources
Free Cooling Potential HVAC System Integrated with PCM Materials: Experimental and Numerical Investigation [PDF]
Iranian Journal of Chemistry & Chemical EngineeringThis research explores the use of energy storage systems in combination with PCM to enhance air conditioner (AC) efficiency by lowering inlet air temperature.
Abbas Saeedian +4 more
doaj +1 more source
RESEARCH OF THE SCOPE OF TESTING REQUIRED FOR QUALIFICATION OF THE HVAC SYSTEM [PDF]
Proceedings on Engineering Sciences, 2019 In the pharmaceutical industry, HVAC system qualification is carried out by applying a risk management model in accordance to relevant GMP requirements.
Ilija Tabašević, Dragan D. Milanović
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