By solving the equation of the power balance of a room analytically, the thermal characteristic of a room is traced back to only three parameters: the loss factor, the time constant and the gain-to-loss ratio. With them, the free-run-temperature of the room is computed and therefrom a generally...

The transient state heat transfer formulation has been used to determine the air conditioning cooling load for two selected one room buildings in Khartoum: one made from brickwork and the other from wood. This formulation has been achieved by applying an explicit finite difference numerical...

A new type of residence with solar heating, earth cooling and air circulation(the SEA House) has been proposed by the authors. In winter, the house is heated by solar energy. Thermal insulation, heat storage and air circulation are used to maintain the room temperature at a comfortable level and...

The thermal performance of a passively heated zone is predicted by calculating the transient temperature variation of each node in the system using a finite-difference model. The sensitivity of the zone air temperature to the change in some of the zone features is examined. Some of these...

This paper is concerned with the optimisation of some design criteria of SHW systems intended for residential and hotel applications. For this purpose, a system model based on TRNSYS programme has been used to correlate the performance and cost effectiveness of the system with a number of key...