Parametric investigation of solar chimney with new cooling tower integrated in a single room for New Assiut city, Egypt climate

Abstract

Houses in Egypt are often designed without taking the climate into account sufficiently. Consequently, new houses often have a poor indoor climate, which affects comfort, health and building efficiency. In hot and arid climates, passive cooling system employs non-mechanical procedures to maintain suitable indoor temperature. Thus, they have been increasing the influence of the traditional cooling concepts but with new technology. Therefore, these conditions encourage such a concept to enhance natural ventilation with evaporative cooling and save energy in the New Assiut city. In the present study, the effect of solar chimney parameters on wind tower parameters was numerically investigated as a second phase of the new integrated model. All the detailed mathematical equations and system description are presented in phase one. A numerical simulation is implemented in Transient systems simulation program-Conjunction of multizone infiltration specialists program softwares. The parametric studies of the integrated system in phase two were studied to achieve high performance with new compact small design especially for the hottest days in the summer season. The temperature and airflow rates are predicted iteratively taking into account the zone pressure and the pressure drop in the evaporative cooler component. The result shows that the system achieves nearly at least close to 80 % acceptable comfort range according to Adaptive Comfort Standard of American Society of Heating, Refrigerating and Air-Conditioning Engineers with optimum ventilation rate 414 m 3 /h for the hottest day. The findings show that the system achieves high performance in the hottest day with small solar chimney dimension and is easy to integrate in the building envelope than the proposed system before parametric studies in phase one.

Application of renewable energy sources and new building technologies for the Philippine single family detached house

“…In residential buildings, energy conservation through the application of high-performance envelopes [1,2], ventilation [3,4], energy efficient lighting [5] and appliances [6] is becoming common in developed countries such as Japan [7,8]. In some residential buildings, installation of nonconventional energy utilization devices such as solar thermal collector [9,10], photovoltaic panels [11] and even wind turbines [12] has been done. In other countries such as in Germany, it was demonstrated that the utilization of different renewable energy sources along with the application of new building technologies can make even a whole town energy independent [13].…”

A review on windcatcher for passive cooling and natural ventilation in buildings, Part 1: Indoor air quality and thermal comfort assessment

“…The system was subject to computational analysis to study the supply rates, the mean age of air (MAA) and air change Furthermore, an IAQ assessment in an occupied space which was naturally ventilated by a commercial windcatcher during the summer period was conducted in [100]. The work involved in-situ measurements of indoor air temperature, humidity and CO 2 concentration.…”

“…[98], [99], [100], [101], [103] and [104]. Only two different publications have been identified reporting the windcatcher applications in the houses in hotarid and tropical climates [102] and [105].…”

Optimum energy consumption by using kinetic shading system for residential buildings in hot arid areas

“…Consequently, new houses often have a poor indoor climate, which affects comfort, health and building efficiency. In hot and arid climates, passive cooling system employs non-mechanical procedures to maintain suitable indoor temperature [6]. Thus, we measure the influence of the new kinetic shading system in energy saving.…”