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Sustainability </a> </li> <li class="SecondaryNavigation-level1ListItem"> <a class="SecondaryNavigation-level1Link " href="/en-sg/insights/take-a-breath"> Take a Breath </a> </li> <li class="SecondaryNavigation-level1ListItem"> <a class="SecondaryNavigation-level1Link " href="/en-sg/insights/virus-contamination-control"> Virus contamination control </a> </li> </ul> </nav> </div> </div> <div id="camY2NjZjkwNEEwMGI2NDk21" class="camfil-col col-xs-12 col-md-9 "> <div class="row "> <div class="col-12"> <h1 class=" u-heading mt-2"> Pacific coast energy plant power generation camgt4v300 </h1> </div> <div class="col-12 col-md-9 "> <div class="lead"> <p> AN ENERGY PLANT ON THE PACIFIC COAST UPGRADES TO THE CAMGT 4V-300 AIR INLET FILTERS AFTER TESTS SHOW ITS WATER AND SALT HANDLING CAPABILITIES. </p> </div> </div> <div class="col-12 col-md-3"> </div> <!-- RichText start --> <div class="RichText col-12 mb-0"> <div> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style> * { box-sizing: border-box; } /* Create three equal columns that floats next to each other */ .column { float: left; width: 33.33%; padding: 15px; } /* Clear floats after the columns */ .row:after { content: ""; display: table; clear: both; } table { border: 1px solid black; width: 100%; border-collapse: collapse; } th { text-align: center; padding: 16px; background-color: #00673E; color: white; border: 1px solid black; } td{ text-align: center; border: 1px solid black; } </style> <p>In 2016, the engineering team for an energy&nbsp;<span style="font-size: 1rem;">plant located near the Los Angeles Airport in&nbsp;</span><span style="font-size: 1rem;">California conducted a boroscope&nbsp; inspection&nbsp;</span><span style="font-size: 1rem;">on two Siemens 501F gas turbine engines.&nbsp;</span><span style="font-size: 1rem;">The test showed signs of corrosion on&nbsp;</span><span style="font-size: 1rem;">both engines, partly resulting from their&nbsp;</span><span style="font-size: 1rem;">manufacturer standard F8 efficiency filters&nbsp;</span><span style="font-size: 1rem;">installed on-site. The team decided to evaluate&nbsp;</span><span style="font-size: 1rem;">the benefits of a higher efficiency&nbsp; final filter to&nbsp;</span><span style="font-size: 1rem;">reduce ambient salt on the turbine air inlet and&nbsp;</span><span style="font-size: 1rem;">the gas turbines.<br /> <br /> </span></p> <h2>The Site</h2> <p><span style="font-size: 1rem;">The plant is located on the Pacific Coast in a&nbsp;deep hollow, where a thick marine layer (fog)&nbsp;draws in from the nearby ocean and settles in,&nbsp;causing increasingly high humidity conditions.</span></p> <div style="background-color: #CCE4DB; padding: 20px;"> <p><span style="font-size: 1rem;">In environments where salt and other&nbsp;hydrophilic contaminants are present and&nbsp;humidity spikes are frequent, particles on&nbsp;the filter media can swell, causing high&nbsp;pressure drop (dP). High filter dP reduces&nbsp;compressor efficiency and ultimately&nbsp;power output. In an extreme case, it can&nbsp;set off a turbine alarm and force operators&nbsp;to derate. Furthermore, high dP increases&nbsp;the risk of salt migration through the filter&nbsp;media. In the presence of salt, the risk&nbsp;of hot-end corrosion increases, leading to&nbsp;costly turbine repairs.</span></p> </div> <p>&nbsp;</p> <h2>The Test</h2> <p>Camfil‘s CamLab, a portable laboratory for&nbsp;testing filters, successfully completed a&nbsp;blind-test on site for a period of 2 122 hours&nbsp;in order to compare four filters from different&nbsp;manufacturers. All four filters have a 24"x24" face&nbsp;area but slightly different filter element depths.</p> <p>During the test, the filters were exposed&nbsp;to on-site contaminants and atmospheric&nbsp;conditions. Corrosion coupons were also&nbsp;installed downstream of each filter duct&nbsp;to provide an additional reading into the&nbsp;performance of the air inlet filters.</p> <p>After site testing was completed, the filters&nbsp;were sent to Camfil’s lab at the Montreal Test &amp;&nbsp;Learn Center where the filters were retested in&nbsp;order to verify their performance in controlled&nbsp;laboratory conditions. Efficiency and pressure&nbsp;drop were first measured, followed by a deluge&nbsp;test (water spray).</p> <p>&nbsp;</p> <h2>Test Results</h2> <h3>CamLab Corrosion Test</h3> <p>Copper corrosion coupons were installed&nbsp;downstream of each filter duct to measure the&nbsp;level of air and water corrosivity. The coupons&nbsp;consist of high purity strips of copper, which&nbsp;were measured according to ISA 71.04:2013&nbsp;for change in thickness resulting from&nbsp;corrosion of the base metals. Table 1 shows&nbsp;that the competitor filters had between 6900&nbsp;and 7700 angstroms of corrosion. Meanwhile,&nbsp;the CamGT 4V-300 had 3300 angstroms of&nbsp;corrosion. That is twice the protection level to&nbsp;the nearest filter in the corrosion coupon test.&nbsp;This shows that filter efficiency is not enough&nbsp;to prevent corrosion - filters should be bypass-free,&nbsp;have vertical pleats, and good drainage&nbsp;capabilities to reduce corrosion risks.</p> <h3>Efficiency</h3> <p>Final filter efficiency is summarized in Table 1.&nbsp;Three of the four filters achieved an E10 rating&nbsp;according to EN1822:2009, whereas Filter B&nbsp;achieved an F9 rating per EN779:2012.&nbsp;</p> <h3>Pressure Drop</h3> <p>Table 3 summarizes pressure drop results.&nbsp;Filter C had the highest dP at the end of the&nbsp;test, while Filter B had the lowest. The low&nbsp;pressure of Filter B can be explained by the&nbsp;relatively low efficiency, as it is the only F9 filter&nbsp;compared to the three higher rated E10 filters.</p> <p>The CamGT 4V-300 12" filter had an identical&nbsp;pressure to Filter A 17". This shows that overall&nbsp;length of the filter alone does not imply a lower&nbsp;dP.</p> <div class="row"> <div class="column"> <h4>Table 1: Copper Corrosion Coupon Results</h4> <table> <tbody> <tr> <th style="text-align: center;">Filter</th> <th style="text-align: center;">Total&nbsp;Å</th> </tr> <tr> <td style="text-align: center;"><strong>&nbsp;Filter A (E10) 17"</strong></td> <td style="text-align: center;">7749.7</td> </tr> <tr> <td style="text-align: center;"><strong>Filter B (F9) 17"</strong></td> <td style="text-align: center;">7303.2</td> </tr> <tr> <td style="text-align: center;"><strong>Filter C (E10) 12"</strong></td> <td style="text-align: center;">6947.3</td> </tr> <tr> <td style="text-align: center;"><strong>CamGT 4V-300 (E10) 12"</strong></td> <td style="text-align: center;">3386.7</td> </tr> </tbody> </table> </div> <div class="column"> <h4>Table 2: Efficiency Results</h4> <table> <tbody> <tr> <th style="text-align: center;">Filter</th> <th style="text-align: center;">Efficiency (EN1822:2009)</th> </tr> <tr> <td style="text-align: center;"><strong>Filter A (E10) 17"</strong></td> <td style="text-align: center;">E10</td> </tr> <tr> <td style="text-align: center;"><strong>Filter B (F9) 17"</strong></td> <td style="text-align: center;">F9*</td> </tr> <tr> <td style="text-align: center;"><strong>Filter C (E10) 12"</strong></td> <td style="text-align: center;">E10</td> </tr> <tr> <td style="text-align: center;"><strong>CamGT 4V-300 (E10) 12"</strong></td> <td style="text-align: center;">E10</td> </tr> </tbody> </table> <p>*According to EN779:2012</p> </div> <div class="column"> <h4> Table 3: Pressure Drop</h4> <table> <tbody> <tr> <th style="text-align: center;">Filter</th> <th style="text-align: center;">Pressure Drop (inch w.g.)</th> </tr> <tr> <td style="text-align: center;"><strong>Filter A (E10) 17"</strong></td> <td style="text-align: center;">1.02</td> </tr> <tr> <td style="text-align: center;"><strong>Filter B (F9) 17"</strong></td> <td style="text-align: center;">0.66</td> </tr> <tr> <td style="text-align: center;"><strong>Filter C (E10) 2"</strong></td> <td style="text-align: center;">1.51</td> </tr> <tr> <td style="text-align: center;"><strong>CamGT 4V-300 E10 12"</strong></td> <td style="text-align: center;">1.01</td> </tr> </tbody> </table> </div> </div> <p>&nbsp;</p> <h3>Deluge Test Results (Water Spray)</h3> <p>After the completion of all efficiency and dP&nbsp;analysis, a deluge test was performed on the&nbsp;dust-loaded filters from the CamLab test to&nbsp;verify the performance of the final filters when&nbsp;exposed to water spray.</p> <p>The test determines:</p> <ul> <li>Filter resistance to water penetration</li> <li>Rate of pressure drop increase over the filters</li> </ul> <p>4" w.g. or one hour had passed, whichever&nbsp;occurred first. Results in Figure 1 show that&nbsp;each filter had more than 20% water bypass&nbsp;with the exception of the Camfil filter. Further,&nbsp;the CamGT was the only filter that lasted the&nbsp;full 60 minutes, without any substantial amount&nbsp;of water bypass, and ending at a low dP. The&nbsp;results show that the CamGT would perform&nbsp;well in high humidity, fog conditions.</p> <h4>Figure 1: Deluge Test</h4> <p><img alt="Image-Pacific-Coast-Deluge-Graph-ENG.jpg" src="/-/media/images/qbank/__web/insight/case-study/image-pacific-coast-deluge-graph-engjpg.jpg?h=425&amp;w=850&amp;rev=b86bc89d00744b1e9db991ced13f97fd&amp;hash=201AA4AB8E8D75ED163E1EA5B28F7AF3" style="height: 425px; width: 850px;" /></p> <h4>Table 4: Deluge Test</h4> <table> <tbody> <tr> <th>Filter</th> <th>Test Duration (min)</th> <th>Water Sprayed (lbs)</th> <th>Water Bypass</th> <th>Max. dP During Test (inch wg)</th> </tr> <tr> <td>Filter A</td> <td>43</td> <td>47</td> <td>14</td> <td>4.7</td> </tr> <tr> <td>Filter B</td> <td>60</td> <td>66</td> <td>23</td> <td>0.8</td> </tr> <tr> <td>Filter C</td> <td>35</td> <td>39</td> <td>9</td> <td>5.5</td> </tr> <tr> <td>CamGT 4V-300</td> <td>60</td> <td>66</td> <td>0</td> <td>1.2</td> </tr> </tbody> </table> <p>&nbsp;</p> <h2>Upgrade</h2> <p>Satisfied with the results of the tests, the plant&nbsp;upgraded their filtration system to the CamGT&nbsp;4V-300, E10 filters for both engines.</p> <div style="width: 250px; text-align: center; padding: 15px 15px; float: right;"><img alt="CamGT 4V300 Red filter" src="/-/media/images/qbank/__web/insight/case-study/camgt-4v300-red-filter.jpg?h=288&amp;w=250&amp;rev=-1&amp;hash=22547D267E4CECFE2179A66D7652FA3A" style="height: 288px; width: 250px;" /><strong>CamGT 4V-300</strong></div> <h2>Key Takeaways</h2> <p>The CamGT 4V-300 was the only filter to&nbsp;successfully pass all four tests. It showed&nbsp;measurable improvements in corrosion as&nbsp;compared to the other filters in the corrosion&nbsp;coupon test. All filters were equivalent in initial&nbsp;efficiency, however, as the efficiency test on&nbsp;used filters, the corrosion test, as well as&nbsp;the deluge test demonstrate, initial lab test&nbsp;efficiency should not be the only factor to&nbsp;consider. Filters should also be hydrophobic to&nbsp;prevent water and salt penetration.</p> <h2>CamGT 4V-300</h2> <p>CamGT’s supreme performance is based on&nbsp;Camfil’s unique design features that enable&nbsp;stable performance during extreme weather&nbsp;conditions.</p> <h3>Key Features</h3> <ul> <li>Efficient water drainage</li> <li>High filter efficiency</li> <li>Low dP also in wet conditions</li> <li>High burst strength</li> <li>Reduced environmental impact</li> </ul> </div> </div> <!-- RichText end --> <!-- FactBox start --> <div class="col-12 FactBox mb-5 mb-lg-7"> <div class="alert alert-primary text-light FactBox-alert"> <div class="u-heading u-textSize18 mb-2"> User benefits </div> <div class="u-textSize14 FactBox-body"> <ul> <li>Less maintenance shutdowns</li> <li>Increased turbine availability</li> <li>Increased fuel efficiency</li> <li>Higher and more stable power output</li> <li>Extended turbine life</li> <li>Overall increased operating profit</li> </ul> </div> </div> </div> <!-- 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