Solar chimneys can help to reduce solar heat gain on a building envelope and enhance natural ventilation. In this work, we proposed three configurations of two combined with heated wall for the ventilation room: (I) are connected serially, (II) parallel exhaust air at separate outlets, (III) parallel, but outlets combined. The airflow rate achieved each configuration was predicted Computational...

Investigations of the flow field in scaled solar chimney power plant model were carried out using a two pronged approach: Experiments for 1:30 scale Manzanares and accompanying numerical simulations. Emphasis was on investigating hydrodynamic stability developing inward radial Rayleigh-Bénard-Poiseuille under collector model. Temperature measurements provided reference data comparison with resu...

The thermal impedance Zth(jω) has been measured for a transistor fixed on a cooling fin. We have put the setup inside a cilindrical chimney with an inner diameter around cm and various heights H ranging from  to  cm. The enhancement of the natural convection cooling by the chimney is clearly demonstrated by means of Nyquist plots of the thermal impedance. Depending on the insertion distanc...

The article is focused on the airflow in a ventilation system building. work examines methods which enhance chimney effect. In this paper, three cases with different chimneys were analyzed for full-scale experiment. These characterized by geometrical and material parameters, leading to differences intensity of airflow. common denominator was room air inlet outlet system. between experimental co...

When its hydrothermal supply ceases, hydrothermal sulfide chimneys become inactive and commonly experience oxidative weathering on the seafloor. However, little is known about the oxidative weathering of inactive sulfide chimneys, nor about associated microbial community structures and their succession during this weathering process. In this work, an inactive sulfide chimney and a young chimney...