Utilizing Skimmer or Curtain Walls to Reduce Entrainment at Cooling Water Intake Structures
At present, there is little information available on the performance of these technologies for reducing entrainment. Therefore, the Electric Power Research Institute (EPRI) is embarking on a three phase approach to investigate if these technologies can achieve quantifiable reductions in entrainment: 1) literature review; 2) study design and rationale; and 3) field and/or laboratory demonstration studies. In a separate but related study, Duke Energy is collecting data at a facility that utilizes a deep skimmer wall (60 feet). This structure was originally designed to withdraw cooler water and improve condenser cooling efficiency. Preliminary data from the 1970s indicated that this structure substantially reduced densities of ichthyoplankton downstream of the wall. The current study is designed to better quantify the benefit of the skimmer wall in reducing entrainment.