Sustainability
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- Published on Thursday, 01 September 2011 13:32
- Written by Super User
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The analysis of the sustainability of buildings involves a holistic view that includes the entire life cycle of the building (production, use, decommissioning) according to the Life Cycle Analysis (LCA) approach.
The software tools used for this kind of analysis typically make use of eco-labels of building materials and products available on the market, according to the International Standard of the Environmental Product Declaration (EPD), with the possibility of considering alternative scenarios for the recovery and reuse of waste materials that are specific to the site where the building is located.
Multi-criteria and analytical scoring tools are also used, typical of the most common environmental certification schemes such as LEED (https://www.usgbc.org/leed), BREEAM (https://kb.breeam.com/) and WELL, capable of assigning a score according to sustainability criteria such as the consumption of embodied energy, drinking water and land use.
The most commonly used tools to simulate environmental comfort and calculate the most relevant comfort indicators are listed and described at the following link:
http://www.ibpsa-italy.org/en/software-en/sustainability.html
Environmental comfort
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- Published on Friday, 26 August 2011 08:22
- Written by Super User
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When dealing with environmental comfort, building simulations are useful to predict the time trends of dry bulb temperature, relative humidity, air velocity and possibly pollutant concentration in indoor and outdoor spaces. In this case, building simulations are frequently performed with the same software tools that are used to estimate the energy performance, but they are conducted under “free running” conditions, i.e. without considering any mechanical systems able to control the above parameters.
Then, the results of the building simulations must be post-processed through suitable tools that can assess a series of comfort parameters and indicators, according to International Standards that integrate well-known comfort theories, such as ANSI ASHRAE Standard 55-2020 and EN Standard 16798-1:2019.
The most commonly used tools to simulate environmental comfort and calculate the most relevant comfort indicators are listed and described at the following link:
http://www.ibpsa-italy.org/en/software-en/environmental-comfort-en.html
Lighting
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- Published on Friday, 26 August 2011 08:22
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Heat and mass transfer
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- Published on Friday, 26 August 2011 08:21
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Combined Heat, Air and Moisture Transfer (HAMT) simulations are useful when one needs to investigate the transient hygrothermal performance of buildings and building components, with a special focus on moisture transfer and storage both in vapor and liquid form. This allows, for instance, to predict possible moisture-related damage either in wood-based materials (or other organic moisture-sensitive ones) or in historical buildings. HAMT simulations can be also used to quantify heat losses in thermal bridges.
HAMT simulations tools numerically solve combined heat and mass balances in 1D or 2D geometries over medium-to-long time spans, and require the availability of reliable updated weather data. The results (in terms of temperature, relative humidity, and moisture content in the various wall layers) can be post-processed to assess a series of risk indicators widely available in the literature, while also investigating the effectiveness of possible mitigation strategies, such as waterproof and vapour-open membranes.
The most commonly HAMT simulation tools are listed and described at the following link:
http://www.ibpsa-italy.org/en/software-en/heat-and-mass-transfer.html