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Full-Text Articles in Engineering
Advancing The Facilities Management Process In Ireland Through The Implementation Of Building Information Modelling Within The Public Sector, Barry Mcauley, Alan V. Hore, Roger West
Advancing The Facilities Management Process In Ireland Through The Implementation Of Building Information Modelling Within The Public Sector, Barry Mcauley, Alan V. Hore, Roger West
Conference papers
It is widely accepted that it costs up to five times more to operate and maintain a building than to construct it. Despite this statistic the Irish construction sector has done little to move towards cutting edge technologies that will help in addressing this impact on life cycle cost. This is due partly to the fact that the Irish construction sector continues to operate in a depressed state. Despite this harsh reality Ireland must find a way to create a public sector that has a more energy efficient and enhanced physical environment in which to operate without sacrificing user thermal …
Heating Effects Through Harmonic Distortion On Electric Cables In The Built Environment, Kevin O'Connell
Heating Effects Through Harmonic Distortion On Electric Cables In The Built Environment, Kevin O'Connell
Doctoral
Under ideal circumstances, electric power supply voltage and current waveforms should be sinusoidal. However, this is very seldom the case in the built environment, due to the proliferation of non-linear loads. Examples of non-linear loads are those containing switched mode power supplies, reactors and electronic rectifiers/inverters. Common devices such as personal computers, fluorescent lighting, electric motors, variable speed drives, transformers and reactors and virtually all other electronic equipment are examples of non-linear loads. Non-linear loads are the norm in the built environment rather than the exception. Such loads produce complex current and voltage waves and simple spectral analysis of these …