Results 21 to 30 of about 27,608 (252)

The effect of the air duct tightness on the stability of the indoor air parameters

open access: yesИнженерно-строительный журнал, 2020
The present study aimed to determine the impact of a gradual and lineal increase of the air duct leakage factor on various indoor air stability parameters in ventilation systems across the following scenarios: 1) air leakage effect on the air pressure ...
Aleksejs Prozuments   +3 more
doaj   +1 more source

Air Quality Assessment of Some Selected Hospitals within Baghdad City [PDF]

open access: yesEngineering and Technology Journal, 2019
Hospitals are institutions designed to provide medical assistance to sick people have harm to their bodies, making them more likely to die than others, so indoor air quality (IAQ) of the various facilities of the hospital must be taken into account by ...
Azhar Haleem   +2 more
doaj   +1 more source

Numerical Investigation on the Cooling Performance of Energy Storage System according to Type of HVAC [PDF]

open access: yes한국정밀공학회지, 2020
In this paper, we analyze the cooling performance according to the HVAC types installed in the energy storage system (ESS). Batteries in ESS have the disadvantages of decomposition and catching fire at high temperatures, so it is important to control the
Hwabhin Kwon, Heesung Park
doaj   +1 more source

Review of energy saving technologies research in HVAC systems [PDF]

open access: yesE3S Web of Conferences, 2023
Energy consumption in the building industry occupies a significant portion of the world’s total energy consumption, and heating, ventilation and air conditioning (HVAC) systems are one of the largest energy consumers in buildings.
Pan Yonghao
doaj   +1 more source

Automated energy performance diagnosis of HVAC systems by the 4S3F method

open access: yes, 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

Implementation of DSM strategies at the Kopanang Mine

open access: yesJournal of Energy in Southern Africa, 2017
This paper describes the implementation of Demand Side Management (DSM) strategies at AngloGold’s Kopanang Mine, for a period of three months during 2001.
EH Mathews, M den Boef
doaj   +1 more source

Optimization of Geometric Parameters of Thermal Insulation of Pre-Insulated Double Pipes

open access: yesEnergies, 2019
This paper presents the analysis of the heat conduction of pre-insulated double ducts and the optimization of the shape of thermal insulation by applying an elliptical shape.
Dorota Anna Krawczyk   +1 more
doaj   +1 more source

Effects of Some Geometric Parameters in Energy-Efficient Heat Distribution of Pre-Insulated Double Pipes

open access: yesProceedings, 2018
In the case of a computational example, a few aspects of the twin pipe geometry are presented, which have an effect on heat losses through double heating ducts.
Dorota Anna Krawczyk   +1 more
doaj   +1 more source

A New Method to Determine the Annual Energy Output of Liquid-Based Solar Collectors

open access: yesProceedings, 2019
This article presents a new way of determining the annual energy output of solar thermal collectors. The proposed method, in the first stage, assumes the creation of a database that contains energy gains QSC from the solar collectors, the average annual ...
Miroslaw Zukowski, Paulina Radzajewska
doaj   +1 more source

Modeling of HVAC system for coupled plant and buildings simulation under Modelica [PDF]

open access: yes, 2022
La Tesi espone il lavoro di modellazione e simulazione di quattro componenti fondamentali del sistema HVAC: un umidificatore a vapore, un umidificatore ad evaporazione, uno scambiatore di calore in contro-corrente aria/aria, uno scambiatore di calore ...
Toninato, Caterina
core  

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