The relative importance of ventilation in the energy balance of buildings has been increasing,as a consequence of control of heat exchanges through the envelope and internalgains. It is therefore very important to clearly understand the main factors that affect energyconsumption due to ventilation and potential ways to decrease the energy demand withoutaffecting IAQ.This study was developed within the European project TIP-VENT (JOULE).
Dynamic computer simulations were used to compare residential ventilation methods to identifyan approach that would improve indoor air quality with minimum energy penalty while maintainingcomfort.
Although Saudi Arabia empowers the world with energy, the country is faced with unprecedented demand on electric energy. The issue, however, is neither affordability nor shortage but the exponential growth of demand on electricity, which reached an annual rate of 17% [Ministry of Industry and Electricity (MIE), 1995). This figure indicates that we need to double the number of our power generation plants within few years in order to meet the kingdom's present and near future demand.
The thermal behaviour of an office building is presented and discussed, as well as the results of a sensitivity study, which analyses the impact of architectural decisions and the effect of occupancy in terms of energy consumption (cooling and heating loads). This study was carried out using one floor of an office building, with large glazed facades, recently built in S. Paulo in Brazil, which was monitored for a short period (11 days)]. This building has been used as reference, for the sensitivity studies carried out for two climates, S. Paulo in Brazil and Lisbon in Portugal.
In 1991 the UK Audit Commission produced energy performance indicators for hospitals based on the type of care provided. However, an analysis of over I 00 hospitals throughout 1he United Kingdom has found the type of care provided to have relatively little effect on rhe energy performance of hospital . Although other factors influenced energy use to some degree, the major factor affecting performance was found to be the plan of the hospital, as this influenced the amount of mechanical ventilation required.
The Netherlands Agency for Energy and the Environment(NOVEM) is conducting a program for the implementation of Low Temperature Heating (LTH) systems in buildings. The primary goal is to enable the use of Low Talued Energy as a heating source. Major savings in enery consumption can be realised by fully utilising the potential of Low Valued Enery. Besides the argument of savings in energy supply, there are additiond benefits in the fields of. Indoor Air Quality (particles, mites, lower air temperature, annoyance and dust);.
Login