Results 31 to 40 of about 37,909 (240)
Automated energy performance diagnosis of HVAC systems by the 4S3F method
, 2022 In practice, faults in building installations are seldom noticed because automated systems to diagnose such faults are not common use, despite many proposed methods: they are cumbersome to apply and not matching the way of thinking of HVAC engineers ...
Taal, Arie (author) +1 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
Thermal Comfort in an Office Room Using Square Diffuser
European Mechanical Science, 2021 The office is an important part of our daily life, people spend most of their time doing works inside of the office and therefore the quality of the indoor environment is a significant factor affecting the productivity and happiness of office users. Many
Alper Yıldırım, Coskun Özalp
doaj +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
doaj +1 more source
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
Machine learning for filter pollution control [PDF]
MATEC Web of Conferences, 2020 Modern buildings usually have an air-tight envelope. Therefore mechanical ventilation is very often necessary. A crucial part of the system is the filter, which allows creating an atmosphere that is free of dust, aerosols, and pollen. As organic material
Krause Ralph +4 more
doaj +1 more source
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
EnergiesTo address the bottleneck that traditional building blinds struggle with, namely synergistically achieve shading control and energy recovery, a vertical mid-pane photovoltaic (PV) louver based on a self-powered feedback mechanism was designed.
Hongwei Gong +3 more
doaj +1 more source
A Year-Round Energy-Efficient Fresh Air Handling System with Two-Stage Heat Pumps and Lake Water Pre-Treatment [PDF]
E3S Web of ConferencesSupplying fresh air is important for indoor air quality, but the energy consumption to treat fresh air is significant. The main problems in existing fresh air system include: supplying single-temperature water to treat fresh air and not applying natural ...
Liang Chenjiyu, Li Xianting
doaj +1 more source
Advanced Science, EarlyView.Hybrid electro‐thermochromic smart windows are developed for dynamic climate control by integrating a redox‐matched black electrochromic gel with a paraffin‐based thermochromic film. This synergistic combination enables multimodal solar modulation, where photothermal heating from the electrochromic layer triggers thermochromic activation at lower ...
Xilu Wu +12 more
wiley +1 more source