The paper provides the results of monitoring on the specifics of indoor air quality in Latvian dwellingbuildings. It will present the results of the evaluation of the ventilation systems operation in differentworking regimes in Latvian climatic conditions.Until the end of 90-ties all dwelling buildings in Latvia were equipped with mandatory naturalventilation systems with stack effect.
The paper is devoted to the analysis of possibility for construction of low energy buildings withenvelopes controlled for minimization of energy consumption by air conditioning systems. It describes the possibilities to reduce energy consumption of large public buildings mainly in summer time when there are the highest electricity demands for cooling. The paper proposes constructive suggestion to create buildings whose walls, roofs and glassed surfaces have changeable thermal characteristics and methodology of control for separate elements.
Energy used for building heating, ventilating and air conditioning contributes to a great share in thetotal energy consumption worldwide. Better understanding and management of energy distribution inthose processes is essential for the improvement of process quality and efficiency of energy use. This paper presents a data-based mechanistic modelling approach to model the dynamic indoortemperature distribution in an imperfectly mixed ventilated airspace based on energy input to thesystem.
The paper presents the results and analysis of the energy consumption of a newly designed office building in relation to quality of the indoor environment. The main energy consuming process in such a type of buildings is air-conditioning and cooling. The building was designed as a low-energy one, cooled by means of cooling ceilings. The architects and designers assumptions were checked by numerical simulation applying ESP-r software. Basing on the simulation results, the seasonal energy consumption was analyzed for different strategies of cooling.
China has been undergoing fast urbanization during the last three decades. Air tightness designequipped with air-conditioning units are currently popular in commercial rather than residential buildings to meet the policy needs of energy conservation. Meanwhile, indoor chemical contamination mainly derived from excessive interior decorating activities causes broad attentions to indoor heath concerns. This paper reviews the development of building ventilation and energy-conservation as well as indoor-air-quality (IAQ) related standards in China.
Air renovation inside buildings is crucial to have productive workers, since the lack of good indoor conditions affects human activity and promotes diseases (Fisk, 2000). This happens particularly in non-residential buildings where usually there is high occupation and thus big needs for fresh air. To achieve good indoor air quality (IAQ), actual ventilation solutions need a significant amount of energy, which is estimated to be about 10% of the total energy used in Europe (RESHYVENT, 2004).
Buildings are a man-made environment built innature. The relation between the indoorenvironment and outdoor nature has becomestrained since much energy was consumed inorder to create a comfortable and safe indoorclimate in the 20th century.It seems that as the indoor climate becomessafer and more comfortable, the more pollutedthe outdoor environment becomes, resulting in akind of structural dilemma in our society. Inother words, the separation of indoor andoutdoor space was expedited as air conditioningtechnology became prevalent.
The aim of this paper is to have a generaldiscussion of the status regarding energybuilding codes in relation to TAQ concerns.First, there is a brief discussion of the trends inenergy regulations and in IAQ concerns. Thenthe objectives and outcome of a recentworkshop on trends in national buildingventilation markets and drivers for change aregiven. This is followed by a brief overview ofsome areas where there might be majoropportunities but at the same time threats.Finally, information about 2 informationplatforms is given as well as some overallconclusions
The Energy Conservation for Buildings andCommunities Systems (ECBCS) is anImplementing Agreement among 23 countriesof the IEA (International Energy Agency) forenergy research and development in buildingsand communities. The ECBCS has nowcompleted 43 major international projectsresulting in demonstrated and adoptedtechnologies and tools with major impacts onenergy efficiency and environmental impacts inbuildings and communities. The ECBCS hasnow completed its 2008-13 strategic plan.
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