In this paper, we study a modified hybrid inertial algorithm of generalized f-projection for approximating maximal monotone operators and solutions of generalized mixed equilibrium problems in Banach spaces. Our results generalize and improve many recent announced results in the literature.

Thermal comfort in a space equipped with a direct evaporative cooler is a function of the height of the cooler's supply air outlet. This article attempts to numerically investigate the impact of hybrid downdraft evaporative cooler (HDEC) supply outlet height on occupant thermal comfort in an office building. DesignBuilder CFD parametric simulations was carried out by varying the height of the HDEC supply outlet from 0.1m to 2.4 m, step 0.1 m above ground level, using Predictive Mean Vote (PMV) as an objective function. The results show that the best PMV of -0.27 was obtained at 0.4m above the floor level.

In office buildings, provision of thermal comfort for occupant’s high intellectual concentration, efficiency and productivity is imperative. This study experimentally and numerically investigates the thermal comfort performance of HDEC system equipped to an office building. The experiment was carried out in September, October and November for 24 working days and the thermal comfort Predicted Mean Vote (PMV) index being the objective function was determined using Centre for Built Environment thermal comfort tool. DesignBuilder CFD simulation software was employed to numerically determine the PMV index of the test office using ASHRAE Standard-55 thermal comfort range of PMV=±0.5. Minitab 19 software was used to validate the numerical results against the experimental results. The Pearson correlation coefficient and the P-value at 95% confidence level were 0.717 and 0.00 respectively while the RMSE computed was 0.653 indicating a good agreement between the numerical and the experimental results. Both PMV results indicate that the HDEC system is suitable for the provision of thermal comfort in office buildings and any other similar building.

The hybrid downdraft evaporative cooler (HDEC) conditions a building by cooling with humidification and hence, inappropriate location of its supply outlet on a building facade has a great impact on the indoor air quality (IAQ) which affect the health, concentration, and productivity of the occupants. This paper investigates the effect of the height of the HDEC supply outlet on the IAQ of an office building equipped with the HDEC system in Bayero University Kano. The building model was created using DesignBuilder software while DesignBuilder CFD was employed for the parametric simulation using air change effectiveness (ACE) as the performance criterion. The height of the HDEC supply outlet was varyfrom 0.1m to 2.4m step 0.1m above the floor level. The results show that higher values of ACE in the occupants’ breathing zone were obtained at lower heights of the HDEC supply outlets with the best ACE of 1.1588 obtained at 0.3m. This information could help engineers to optimally position the HDEC supply outlet on the façade of an office building or any other building with similar characteristics.

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