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Articles 211 - 240 of 613
Full-Text Articles in Construction Engineering
Stochastic Hybrid Embodied Co2-Eq Analysis: An Application To The Irish Apartment Building Sector, Adolf Acquaye, Aidan Duffy, Biswajit Basu
Stochastic Hybrid Embodied Co2-Eq Analysis: An Application To The Irish Apartment Building Sector, Adolf Acquaye, Aidan Duffy, Biswajit Basu
Articles
Although embodiedCO2-eq analysis has seen recent developments as evident in the establishment of the ISO14040 and 14044 LCA standards, it is recognized that due to weaknesses in gathering data on product-related emissions,embodiedCO2-eq values are probabilistic. This paper presents a stochastic analysis of hybrid embodied CO2-eq in buildings to account for this weakness in traditional methods and, by way of example, applies it to an Irish construction-sector case study. Using seven apartment buildings, 70,000 results are simulated with Monte Carlo analysis and used to derive probabilistic and cumulative embodied CO2-eq intensity distributions for apartment buildings in Ireland. A Wakeby distribution with …
Thermal Bridging - Understanding Its Critical Role In Energy Efficiency, Joseph Little, Beñat Arregi
Thermal Bridging - Understanding Its Critical Role In Energy Efficiency, Joseph Little, Beñat Arregi
Articles
Plane element heat loss[1] and thermal bridging[2] together constitute all the conduction heat loss (measured in W/K, watts per kelvin) through the thermal envelope[3] of a building. Perversely insulating the plane elements more and more without carefully dealing with junctions can lead to a significant increase in thermal bridging heat loss. This is often more significant in poorly thought-out energy-focused retrofits than in existing or new buildings.
To Dallas And Back - The Oaklin Design Build Experience, Lloyd Scott
To Dallas And Back - The Oaklin Design Build Experience, Lloyd Scott
Books/Book Chapters
No abstract provided.
Top Tips For Domestic Refurbishment, Joseph Little
Top Tips For Domestic Refurbishment, Joseph Little
Articles
1) It stands to reason that insulating a wall should not affect its strength or longevity, nor should it result in a buildup of moisture (inter-stitial condensation) or mould. However the Industry is currently gripped with a desire to insulate to the highest standard (U-value) at the lowest financial cost, as quickly as possible, with little thought of these issues. An appropriate, robust solution must take the original wall, the occupant’s health, the room’s function and even the building’s location into account.
Breaking The Mould 5 : Comparative Simulation Of Internal Insulation Systems, Joseph Little
Breaking The Mould 5 : Comparative Simulation Of Internal Insulation Systems, Joseph Little
Articles
In the last edition of Construct Ireland ‘Breaking the Mould IV’ established the standard that should be used to evaluate thermal upgrades of single leaf walls, described steps to physically prepare the wall, explained some of the mechanisms that affect the likelihood of mould and gave criteria for judging the simulations outputs. The next step is to simulate a number of permutations of typical internal insulation systems using WUFI Pro under IS EN 15026.
Breaking The Mould 3, Joseph Little
Breaking The Mould 3, Joseph Little
Articles
This article is the third in a series looking at thermal upgrades to single-leaf walls of existing houses. The theme for this article was intended to be an analysis of various drylining options for brick and rubble-built walls of older properties. That will follow. The following events forced a change in focus.
An Independent Analysis Of The Thermal Characteristics Of Irish Concrete Hollow Blocks And Hollow Block Wall Upgrades And A Discussion On Hollow Block Design, Joseph Little, Beñat Arregi Goikolea Mr
An Independent Analysis Of The Thermal Characteristics Of Irish Concrete Hollow Blocks And Hollow Block Wall Upgrades And A Discussion On Hollow Block Design, Joseph Little, Beñat Arregi Goikolea Mr
Articles
Hollow block walls, whether originally built with external render and internal plaster, or more recently with external render and insulated drylining, represent the most common form of wall construction in Leinster over the last 50 years (see image in Figure 8). In terms of vapour movement, air movement and thermal performance it is also one of the least understood forms of construction practiced in Ireland.
This technical paper and two articles by the same author published by Construct Ireland in February and May 2009 (Issues 6 & 7, Vol. 4) form a concerted effort to rectify this knowledge deficit. It …
Breaking The Mould 2 : An Analysis Of Single-Leaf Insulation Upgrades, Joseph Little
Breaking The Mould 2 : An Analysis Of Single-Leaf Insulation Upgrades, Joseph Little
Articles
This article is the second in a series looking at thermal upgrades to single-leaf walls of existing houses. It compares a range of ways of upgrading masonry single-leaf walls, particularly the ubiquitous hollow block wall, and the impact of those decisions on moisture content, wind- and airtightness, cost and heating. Future articles will look at various drylining approaches for a range of walls including brick walls of various widths.
Breaking The Mould 1 : A Study Of Condensation In Single-Leaf Concrete Wall Upgrades, Joseph Little
Breaking The Mould 1 : A Study Of Condensation In Single-Leaf Concrete Wall Upgrades, Joseph Little
Articles
This article is the first of a series looking at upgrade options and issues associated with single-leaf walls of existing houses. This article will focus on insulated drylined concrete block walls of the ubiquitous housing estate house. This will include the findings of software that dynamically models moisture movement through the wall over several years. The article following this will look at a range of options for replacing existing drylining or installing drylining where it never was before, be that for a solid block wall of a 1950s house or a solid brick wall of an 1850s house.
In Transit - Transition Movement Inspires Dramatic Carbon Cuts In House Refurb, Joseph Little
In Transit - Transition Movement Inspires Dramatic Carbon Cuts In House Refurb, Joseph Little
Articles
Drawing on the ‘Energy Descent Action Plan’ he developed at Kinsale, Rob Hopkins and his team launched Transition Town Totnes (in the UK) one and a half years ago. 64 recognised transition communities and 600 other groups (and counting) are now in communication with Rob’s team to launch their versions of this initiative in their communities worldwide.1 The Transition Ireland Network is coordinated by Davie Philip of Cultivate and several transition initiatives are underway here.