Search results for " comfort"
showing 10 items of 132 documents
Bio-based Materials. Standardizzazione e processi per la commercializzazione
2021
Il contributo si occupa degli aspetti normativi nel campo della produzione e uso di una malta con componenti organici derivanti dal riciclo di scarti agricoli e silvo-pastorali. Viene prestata attenzione alla normativa internazionale più diffusa e nota, a quella europea e a quella italiana. La riduzione del consumo di suolo e di risorse lapidee, degli scarti, la limitazione dell’utilizzo di materiali di cava naturali sono solo alcuni benefici che hanno indotto la comunità scientifica a investire nell’uso di materie prime-seconde di origine vegetale, ecosostenibili; oggi, lo stato dell’arte è molto ricco. Tuttavia, non ci sono ancora normative tecniche e procedurali relative ai materiali che…
Simplified thermal analysis of naturally ventilated dwellings
1991
Abstract A simplified comprehensive methodology for thermal comfort prediction in a naturally crossventilated room is described. The methodology mainly consists of the following three steps: • - analysis of the dynamic thermal behaviour of the given room, by means of the admittance procedure; • - evaluation of the air flows rates and their velocities in the room, by means of a new simplified method; • - thermal comfort prediction by means of the Fanger's theory. The results obtained appear satisfactory and the simplified methodology makes itself a useful tool for the identification of appropriate choices at the early stages of the design process, regarding naturally ventilated buildings. Th…
Sustainable lighting design through the analysis of spatial and time non-uniformities in natural lighting with the metric of the information theory
2014
The indoor visual comfort of subjects faced with indoor ambient lighting varies with the position of the subject and is not constant over time. Average performance indexes, such as the mean value of Daylight Factor and Daylight Autonomy, are commonly used to analyse lighting distribution. These indexes, however, don’t properly take into account either the spatial or the time distribution of values affecting the non-uniformity of environmental lighting. Indeed, these are limited to the definition of a mean value or to the assessment of time availability of daylighting. This paper examines spatial and temporal non-uniformities in indoor lighting as possible causes of discomfort for occupants.…
Evaluation through adaptive model (ATC) in the levels of thermal comfort in summer in offices in Mediterranea locations.
2014
The design of the building-plant system in the case of office buildings has rarely considered the adaptive model of comfort almost always limited to the control of temperature and humidity and only in some cases of PMV and PPD. Specifically when the building interacts with a climate characterized by high values of external temperature and humidity for long periods, and with high solar radiation in the presence of large glazed areas, it is crucial to take into account relevant aspects of the principle of thermal adaptation. The long stay of the occupants in an air-conditioned environment leads, at the request of colder temperatures very distant from those indicated by the criteria of accepta…
Thermo-hygrometric comfort in hospital rooms conditioned by means of a primary air system and ceiling radiant panels
2008
In this work the first results of experimental research are described, which began in the 2006 summer season and is still underway, on the performance of a primary air system integrated with radiant ceiling panels that runs in the hospital rooms in the maternity ward of the Maggiore Hospital of Bologna. The choice of this kind of environment is based the fact that there is more and more attention toward literature on comfort standards that must be guaranteed in the hospital environment, due to the presence of typically weak users, both from the clinical and psychological point of view. The performance of the air conditioning system is taken into account in relation to the conditions of comf…
Proposte per il risparmio energetico negli edifici pubblici: Edificio 16 di Parco D'Orleans
2010
Obiettivo dello studio è di valutare le condizioni microclimatiche all’interno di alcuni ambienti di un edificio scolastico esistente e di elaborare una proposta di soluzioni per la riqualificazione energetica dell’edificio. La ricerca riguarda l’edificio della Facoltà di Biologia dell’Università di Palermo, il cui progetto è stato sviluppato dal gruppo Vittorio Gregotti & Associati nella prima metà degli anni ‘70. L’attenzione è concentrata sull’analisi delle condizioni microclimatiche e sulla riduzione dei consumi energetici del Dipartimento di Biologia Cellulare e dello Sviluppo. Si è proceduto ad una classificazione degli ambienti occupati, al fine di individuare ed indagare quattro tip…
A Sustainable and Zero Energy Healthcare Facility in Mozambique
2016
Sustainable urban development, especially in economically disadvantaged regions, has increasingly become a major strategic priority. New settlements and urban regeneration programs have to improve the quality of social life, promote economic growth, increase environmental protection practices, and ensure the appropriate use of local resources. In that framework, a well-structured healthcare service is commonly conceived as vital for urban development. In response, this paper proposes the construction of one such healthcare facility in a deprived urban area in Maputo, Mozambique. Prioritising typical pillars of sustainability, the project’s design considers traditional building typology and …
Multi-Agent Systems as Effective Tools for the User-Based Thermal Comfort: an Introduction
2010
Through the paper the characterization of a comfort model, enriching that proposed by Fanger with an adaptive approach, is carried out using a Multi Agent System (MAS). This is a well suited coordinated set of Intelligent Agents, that are software applications interacting in order to follow user in his own needs and preferences in relation to indoor comfort, adapting to the changes of context variables. As a matter of fact, MAS are systems aware of the scenery where users live, following them in their own needs and preferences and adapting to their expectations. Indeed, thermal comfort conditions in the built environment are strictly related not only to the thermal and geometric building fe…
Integrated analysis of performances of facades for indoor comfort purposes
2002
Some guidelines for a method able to evaluate different physical characteristics of building facades, equipped with glazed surfaces, and of indoor environments in order to attain indoor comfort conditions are proposed. New graphs are introduced, showing at the same time the behaviours of several technical-physical parameters of walls, in order to allow comparative analysis of different design configurations in terms of acoustics, lighting and heat transfer properties. Similar graphs are also constructed with reference to parameters characteristic of indoor environment, in order to allow synthetic analysis of comfort conditions. The method would represent a contribution toward the definition…
RESEARCH ON MICROCLIMATE LIGHT CONDITIONS IN A SCHOLASTIC ENVIRONMENT, BASED ON ADAPTIVE MODEL
2010
This paper shows the results of a deep research, carried out on a scholastic setting and based on a questionnaire, to evaluate the light microclimate and the satisfaction degree of the users. Through simulations, we have previously identified a number of classrooms where the conditions could be critical, both in terms of over-lightning, glare and disrespected values (suggested by the current normative). The proposed method consist in using device-made-surveys, a simulation software and questionnaires submission to users of the studied rooms. The questionnaires, based on an adaptive model, has been developed to detect subjective data (place, visus…) and other information about the setting an…