دانلود رایگان مقاله بهینه سازی راندمان پمپ با طرز کار خصوصیات پمپ های مختلف

abstract

This paper concentrates on an algorithm for the prediction of steady running variable speed pumps (VSPs) working in parallel to keep them running close to the best efficiency point (BEP) provided by the pump manufacturer. Special focus is on the pumps that have different efficiency and performance characteristics. The complex optimization task to maximize the total efficiency of the pump system and thereby minimize energy consumption was solved with the customized optimization software using the Levenberg–Marquardt algorithm (LMA). Three different theoretical scenarios were analyzed: with working pumps having identical, slightly and largely different characteristics. The transition curves are proposed on the basis of optimization that indicate water discharge and pressure head when an additional pump should be switched on to ensure the highest total efficiency of the pump system.

3. Conclusions

Our investigation demonstrated that • Optimization software can be used to estimate the best combined efficiency of the pumps working in parallel. • Identical pumps work at the best combined efficiency if the discharge is identical for all pumps, as reported in several investigations. • Non-identical pumps work at the best combined efficiency if the water discharges are different. • The optimal number of working pumps can also be estimated using the optimization software.