Performance Evaluation of Displacement Ventilation System Combined with a Novel Evaporative Cooled Ceiling for a Typical Office in the City of Beirut

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Abstract

The study investigates by modeling the performance of displacement ventilation (DV) aided with a Novel Evaporative Cooled Ceiling, Maisotsenko cycle (M-cycle). The proposed system will increase the load removal of the DV system beyond the 40 W/m2 limit with no additional energy consumption. Predictive mathematical models of the conditioned space and the evaporative cooled ceiling will be developed to study the energy performance of the suggested combined system for typical offices of Beirut. The study identifies different values of supply air relative humidity at a certain supply flow rate and temperature while meeting space load, indoor air quality, and thermal comfort. The proposed system resulted in cooling load removal capacity enhancements of 18.65%, 44.3% and 72.25% at supply air relative humidity of 90%, 50% and 10 °C respectively. The results indicated a better performance at lower supply air relative humidity.

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Itani, M., Ghali, K., & Ghaddar, N. (2015). Performance Evaluation of Displacement Ventilation System Combined with a Novel Evaporative Cooled Ceiling for a Typical Office in the City of Beirut. In Energy Procedia (Vol. 75, pp. 1728–1733). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2015.07.440

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