Numerical Investigation on Effect of Wind and Gas Injection on Indirect Dry Cooling Towers: A Case Study of Shaheed Rajaee Power Plant
Year: 2018
Type: article
Abstract: Numerical study of effective parameters on natural convection heat transfer in a dry cooling tower is carried out by using the commercial software of Ansys-Fluent. The modelled dry cooling tower has the same geometry as in Shahid Rajaee power plant in Iran. For a particular performance of the cooling tower, numerical and experimental results are compared, and suitable algorithm and turbulence model are determined. Results show that k-e-RNG full buoyancy effect model is the most accurate approach for modeling the turbulence and COUPLED algorithm is the best for solving for the coupling between pressure and velocity fields. Grid independency is validated, and the best numerical grid is selected. Due to presence of external flow, domain independency is also checked, and the best domain is selected. Effect of wind and force convection on cooling process is also studied. At the end, effect of high velocity air injection on increasing momentum and efficiency of the cooling process is studied. At moderate atmospheric condition, air injection slightly improves the amount of heat transfer, but it can reinforce the flow in unstable conditions like stormy weather and thus sustain the cooling process.
Authors: Reza Amini, Mehdi Kashfi, Mohsen Amini
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2905541973