Real-time control of comfort in indoor spaces needs models of temperature distribution and the air velocity field.
Volume 6: 2007-2008
International Journal of Ventilation, Volume 6, 2007-2008
A State Space Model for Real-Time Control of the Temperature in Indoor Space - Principle, Calibration and Results | 2008 | English
The purpose of ventilation is to dilute indoor contaminants that an occupant is exposed to. In a multi-zone environment such as a house, there will be different dilution rates and different source strengths in every zone.
An Investigation into Parameters Affecting an Optimum Ventilation Design of High Density Cities | 2008 | English
This paper addresses the process of optimising the benefits of the natural (air) environment in the case of a high density city in which the amount of building volume is ultimately constrained.
Application of the PHACES Tool in the Design of Natural Ventilation for Passive Cooling | 2007 | English
Natural ventilation associated with shading techniques is an alternative way to reduce the use of expensive and environmentally harmful active systems, while providing summer thermal comfort and good indoor air quality.
Aspects of CFD Modelling of a Fan and Pad Evaporative Cooling System in Greenhouses | 2008 | English
A methodology approach to simulate, by means of computational fluid dynamics (CFD) tools, a greenhouse equipped with a fan and pad evaporative cooling system is presented.
The important error sources associated with measurements using low velocity thermal anemometersincorporating an omnidirectional velocity sensor (LVTA) are identified and quantified.
Several building simulation programs have been developed for design, analysis and prediction of thedistribution of temperature, airflow and heat transfer between the inside and outside of a building, and/or between different zones of the building.
Carbon Dioxide Concentration and its Application in Estimating the Air Change Rate in Typical Irish Houses | 2007 | English
In this study, the function of carbon dioxide as an index of indoor air quality and as a tracer gas to estimate the air exchange rate in naturally ventilated single family houses was investigated.
Combining Junction Losses on Channel Sections in Ventilation Duct System Flow Analyses | 2007 | English
When the airflow pressure losses at the junctions of ducts in ventilation systems are taken into account, the analysis becomes more complicated since no unique value for the static pressure is associated with a junction.
Ventilation is essential for the health and comfort of building occupants. It is particularly required to dilute and/or remove pollutants emitted by occupants' metabolism and activities.
The buildings sector is a major energy consumer as it accounts for almost 40% of the EU’s energy requirements and for about 1/3 of the total energy related CO2 emissions.
Recent work has begun to consider the potential for using freeze flow techniques in Computational Fluid Dynamics programs for carrying out long term simulations of time dependent flows.
Embedded Detail Microscopic Models of Rooms within Macroscopic Models of Whole Building Systems | 2007 | English
Established methods of computational fluid dynamics (CFD) have been applied to predict the details of airflow, contaminant dispersal and thermal transport within isolated zones, yet zone transport processes do not occur in isolation.
Exergy Analysis as an Assessment Tool of Heat Recovery of Dwelling Ventilation Systems | 2007 | English
This paper presents steady-state energy and exergy analyses for dwelling ventilation with and without air-to-air heat recovery, and discusses the relative influence of heat and electricity on the exergy demand by ventilation airflows.
Experimental Analysis of a Genetic-Fuzzy Inverter DX VAV A/C System for Automatically Ventilated Buildings | 2007 | English
In recent years, the quest has been focused on energy efficient building design.
Passive cooling techniques such as night time cross ventilation can potentially provide substantial cooling energy savings in warm climates.
Impact of Occupant Modelling on the Prediction of Airflow around Occupants in a Ventilated Room | 2007 | English
Localized ventilation systems typically create highly asymmetric or non-isothermal environments around occupants with significant vertical temperature gradient and highly non-uniform airflow regimes that could be directed toward a segment of the b
Knowledge of ventilation rates in dairy buildings is essential for determining indoor air quality and for estimating green house gases and particle emissions.
Monitoring Results of a Naturally Ventilated and Passively Cooled Office Building in Frankfurt, Germany | 2007 | English
Ventilation, cooling and air-conditioning contribute significantly to the energy consumption of many existing office buildings, particularly when primary energy factors are taken into account.
Natural Ventilation - A New Method based on the Walton Model Applied to Cross-Ventilated Buildings having Two Large External Openings | 2007 | English
In order to provide comfort in a low energy consumption building, it is preferable to use natural ventilation rather than HVAC systems.