Residential apartments in Hong Kong are usually equipped with up to three window-type air conditioners, placed in living rooms and bedrooms, operated over seven months of hot and humid weather. Analyses the arrangement of room furniture to minimise cold air draughts. The performances were modelled using FLOVENT.
Investigates the possibility of limiting ventilation in archival storage areas when the outside conditions would have a detrimental effect on the humidity. Conducted measurement-based simulations on the Vaud state archives in Lausanne, Switzerland, with a continental mild climate. Recommends good insulation and high thermal mass.
The study developed a method to assess the capability of outdoor air utilized for summer cooling in urban apartments in the hot, humid climate of Taiwan (average yearly temperature 23 Deg C, average humidity 85%). The assessment method is approached using three aspects of identifying the maximum comfort room temperature, estimating the cooling capacity of applied outdoor air volume, and calculating the required outdoor air and pre-cooled outdoor air volumes for cooling through cooling load calculations.
Presents the main features of a preliminary HVAC system project relative to a university complex, based on principles of sustainability. The design involves installation of a cogeneration system. It is proposed to incorporate hybrid and natural ventilation for energy efficiency. Gives examples of architectural designs for the various areas.
Describes best practice for energy labelling for existing residential buildings in four countries. Also describes the specific features of a Belgian procedure for on-site evaluation of both equipment and building envelope. The results can be used by other countries as general guidelines to develop or optimise efficient and effective energy labelling procedures.
Proposed an alternative method to the LCA, the so-called Eco-Indicator, intended to tackle the total environmental impact on a number of different levels (e.g. materials, energy, waste, etc). It is based on a weighting method, and only a single score for the total environmental impact is calculated. It can be used to optimise heating and cooling systems.
Describes part of a global study on carbon dioxide emission associated with electricity consumption in Belgium. Two commercial buildings were the subject of a simulation. HVAC energy consumption and corresponding CO2 emission were calculated after an identification of the heating and cooling demands. It was found that they are strongly dependant on occupancy rates, and coexist throughout the year.
Describes the process of designing a supervisory control to provide thermal comfort and adequate air distribution inside a single-sided naturally ventilated test room. The controller is based on fuzzy logic reasoning. Inputs are the outside wind velocity, direction, outside and inside temperatures. Output is the opening position. The strategy is then validated using experimental data from a naturally ventilated test room. Presents the initial results of the study, which show that the controller is capable of providing better thermal comfort inside the room.
Describes a system designed to maintain good ventilation consisting of special window ventilators that permit a trickle air flow rate to pass and to maintain a background ventilation. The apparatus for measuring the characteristics of window grilles are described and the results obtained from some commercial window grilles discussed.