this paper investigates the function of windcatchers in dry regions in middle east and compares them in different fields in two areas including yazd-iran, and egypt. the study examines windcatchers in these areas in terms of cooling system and forms, with different plans, forms, constituent components and decorations.reassessment of windcatchers in these areas can shed light on these difference...

Gas turbines play an important role in supplying power for the country especially in peak electricity load. The main disadvantages are the turbines, they produce large changes are a result of climate change. However, in times of peak electricity grid and at the same time warm months, can produce gas turbines under the effect of ambient temperature, the amount of reduced considerably. The method...

There has been a strong interest developing for solar cooling in Australia and this is leading to an increasing number of commercial solar cooling installations. It is timely to review the environment in which an emerging solar cooling industry must operate. This review begins with a look at world leading commercial and research activities in Europe and the benchmarking thus provided. A local c...

Multiple-evaporator/vapor compression cooling systems are used for air conditioning in multi-zone buildings with a refrigerant supplied to each individual zone-evaporator from a central compressor/condenser unit. Such systems, incorporating controlled electronic expansion valves associated to each evaporator and a variable-speed compressor, allow the overall system to be able to operate in diff...

The performance improvement of modern computer systems is usually accompanied by increased computational power and thermal hotspots, which in turn limit the further improvement of system performance. In 3D-ICs, this thermal problem is significantly exacerbated, necessitating the need for active cooling approaches such as micro-fluidic cooling. This paper investigates a co-optimization approach ...

Existing passive cooling solutions limit the short-term thermal output of systems, thereby either limiting instantaneous performance or requiring active cooling solutions. Active cooling requires relatively large amounts of power, and cannot easily and efficiently handle temperature spikes. PCMs (phase change materials) are materials that can change phase at a device’s operating temperature, ab...

OBJECTIVE To examine the effect of cooling the skin with an ice jacket before and between exercise bouts (to simulate quarter and half time breaks) on prolonged repeat sprint exercise performance in warm/humid conditions. METHODS After an initial familiarisation session, seven trained male hockey players performed two testing sessions (seven days apart), comprising an 80 minute intermittent, ...

The influence of cooling rate on the wear and antimicrobial performance of a Cu52Z41Al₇ (at. %) bulk metallic glass (BMG) composite was studied and the results compared to those of the annealed sample (850 °C for 48 h) and to pure copper. The aim of this basic research is to explore the potential use of the material in preventing the spread of infections. The cooling rate is controlled by chang...