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Full-Text Articles in Business

Sensitivity Studies Of A Low Temperature Low Approach Direct Cooling Tower For Building Radiant Cooling Systems, Medhi Nasrabadi, Donal Finn, Ben Costelloe Jul 2012

Sensitivity Studies Of A Low Temperature Low Approach Direct Cooling Tower For Building Radiant Cooling Systems, Medhi Nasrabadi, Donal Finn, Ben Costelloe

Conference Papers

Recent interest in cooling towers as a mechanism for producing chilled water, together with the evolution of radiant cooling, have prompted a review of evaporative cooling in temperate maritime climates. The thermal efficiency of such systems is a key parameter, as a measure of the degree to which the system has succeeded in exploiting the cooling potential of the ambient air. The feasibility of this concept depends largely however, on achieving low approach water temperatures within an appropriate cooling tower, at acceptable levels of energy performance. Previous experimental work for a full scale evaporative cooling system has shown that it …


Mathematical Modelling Of A Low Approach Evaporative Cooling Process For Space Cooling In Buildings, Medhi Nasrabadi, Donal Finn, Ben Costelloe Jan 2012

Mathematical Modelling Of A Low Approach Evaporative Cooling Process For Space Cooling In Buildings, Medhi Nasrabadi, Donal Finn, Ben Costelloe

Conference Papers

This paper describes a mathematical model of a low approach open evaporative cooling tower for the production of high temperature indirect cooling water (14-16°C) for use in building radiant cooling and displacement ventilation systems. There are several potential approaches to model evaporative cooling, including: the Poppe method, the Merkel method and the effectiveness-NTU (ε-NTU) method. A common assumption, applied to the Merkel and ε-NTU methods, is that the effect of change in tower water mass flow rate due to evaporation is ignored, which results in a simpler model with reduced computational requirements, but with somewhat decreasedaccuracy. In this paper, a …


Serious Gaming Learning: Supply Chain Multi-Agent Web-Based Simulation Game, Ayman Tobail, John Crowe, Amr Arisha Jan 2012

Serious Gaming Learning: Supply Chain Multi-Agent Web-Based Simulation Game, Ayman Tobail, John Crowe, Amr Arisha

Conference Papers

High levels of complexity and uncertainty, and various sources of risks, create challenges for supply chain networks in achieving satisfactory performance, but advances in Information Technology can help supply chain decision makers predict the magnitude and impact of the risks related to their decisions. The framework proposed in this paper offers a solution that integrates intelligent-agents, simulation modelling, and optimisation. Its friendly, animated, interactive web-based interface is especially designed to engage the user in a ‘serious game’ environment. Each user plays a specific role in the supply chain network, and encounters the consequences of their decisions. The optimisation engine embedded …


The Use Of Audio Feedback To Develop Deeper Learning In Business Education, Daire Hooper Jan 2012

The Use Of Audio Feedback To Develop Deeper Learning In Business Education, Daire Hooper

Conference Papers

It is widely regarded that providing students with feedback is central to their learning (Biggs & Tang, 2007). Traditionally feedback has been given to students either in person or in writing, however, due to advancements in technology, audio is now employed by a small minority of educators in Higher Education (Ice et al., 2007; Merry & Orsmond, 2007; Middleton, 2007; Nortcliffe & Middleton, 2007). Audio feedback is a feedback mechanism whereby feedback is given to students via mp3. To date, research on audio feedback has focused on students’ perceptions of audio as a feedback mechanism, and its ability to increase …