10 Intermediate-level'o computer codes are advocated as being the most appropriate for meeting the requirements of dynamic building thermal models. Such codes may be developed via the .4 computer-generalizationA Of analytical solutions and data correlations, which are then verified using higher-level ccoputational procedures and/or experimental measurements. Two intermediate-level ccniputer codes are described: one to model the convective heat exchange at the external facades of a building (WIND-CHT program), and the other to calculate the hourly mean rates of air infiltration into buildings (FLOW program). These codes take into account most of the key parameters such as wind speed and direction, the change in shape and height of the atmospheric boundary-layer over different terrains, the relative dimensions of the building, the indoor-outdoor temperature difference and the leakage characteristics of the building. Both the WIND-CHT and FLOW programs are carpared with field experimental data, and good agreement is shown. The sensitivity of two dynamic building thermal models to the external convection and air infiltration input data are then assessed. The NBSLD (National Bureau of Standards Load Determination) 'response factor' program (1981) and the BM (British Research Establishment) 'admittance procedure' program (1984) were chosen for this purpose. The sensitivity of these models to the internal convection input data was also assessed. In this case the ROOM-CHT program, developed by Alamdari and Hammond (1982) was employed. Both models displayed a considerable variation in their results when the 'traditional' input data were replaced by the 'improved' values, although the extend of the impact of the convection and infiltration models is likely to depend on the conditions prevailing in and around the particular building being simulated.

The meaning of a place results from accumulated interactions between an individual's life history and a setting. Place experiences often include some feeling of ownership. Ownership in this case is a psychological phenomenon that does not require legal title to a piece of land or a building, but rather, a sense that the person has some uncommon, special relationship with that particular setting. Although much of what characterizes a place may be very personal. Groups and even entire communities can develop place attachments. The objective of the study is the design of agri-tourism facilities within the realm of local community development. These facilities need to meet a variety of criteria to fulfil the expectations of the three main stakeholders, being agriculture, tourism and local community. A design that is context, and energy conscious, with a sympathy to existing ecological systems and self-sustainability, will determine the success of this project. The design, including before mentioned criteria, of an agri-tourism complex , incorporates local skills training which form part of the activities on the farm Madi A Thava, Makhado district in the Limpopo province. These facilities must meet the needs of the different clientele for each of the three entities. Each facility has its own identity arising from its specific function. The agri-tourism complex will have a dominant agricultural character, as this facility houses the main activity to ensure self-sustainability of the farm as a whole. / Dissertation (MArch(Prof))--University of Pretoria, 2007. / Architecture / unrestricted