Updating some links

src/app/commercial-hvac/central-plant/pump/eems/eems.component.html

@@ -59,4 +59,4 @@ <h3>Life Cycle Cost Analysis of Pumps</h3>
 <p>For information on life cycle cost (LCC) analysis of pumps and developing a business case, refer to <a href="https://www1.eere.energy.gov/manufacturing/tech_assistance/pdfs/pumplcc_1001.pdf">Pump Life Cycle Costs: A Guide to LCC Analysis for Pumping Systems, Executive Summary</a>.</p>
 
 <h3>Future Pump Capacity Increase Planning</h3>
-<p>To avoid running the equipment at part load, the design should be such that it can be upgraded easily. Planning space for such additions is strongly recommended. For more details about planning for future capacity increases, refer to section 7.3.3., Plan for Future Capacity Increases, in Chapter 7, Pumps and Motors of <a href="https://pdfslide.net/documents/energy-related-best-practices-a-sourcebook-for-the-chemical-.html">Energy-Related Best Practices: A Sourcebook for the Chemical Industry</a> from Iowa State University.</p>
+<p>To avoid running the equipment at part load, the design should be such that it can be upgraded easily. Planning space for such additions is strongly recommended. For more details about planning for future capacity increases, refer to section 7.3.3., Plan for Future Capacity Increases, in Chapter 7, Pumps and Motors of <a href="https://invenoeng.com/wp-content/uploads/2017/08/Energy-Best-Practices-Chemical-Industry-Sourcebook.pdf">Energy-Related Best Practices: A Sourcebook for the Chemical Industry</a> from Iowa State University.</p>

src/app/commercial-hvac/distribution/ahu/cases/cases.component.html

@@ -1,6 +1,6 @@
 <h1>{{ title }}</h1>
 
-<p><a href="https://www.dac-hvac.com/wp-content/uploads/Coil-Cleaning-Saves-Energy-Study.pdf">34-floor building on Times Square in New York city</a><br>
+<p><a href="https://technologyportal.ashrae.org/Journal/ArticleDetail/120">34-floor building on Times Square in New York city</a><br>
   This study involved cleaning the coils of two AHUs with cooling capacities of 121 tons and 81 tons respectively. There were four AHUs in total, serving an area of 1.2 million ft<sup>2</sup>. The coils of the AHU under study were 30 years old. The study resulted in:</p>
 <ul>
   <li>An estimated energy savings of up to $40,000 for the first year</li>

src/app/commercial-hvac/distribution/fans/eems/eems.component.html

@@ -7,7 +7,7 @@ <h2>Resources</h2>
     <br>In-depth discussion of variable air volume system design, best practices, and component design considerations</li>
   <li><a href="https://www.yumpu.com/en/document/read/7625769/advanced-variable-air-volume-vav-system-design-guide">Design Brief: Advanced Variable-Air-Volume (VAV) Systems</a>, Energy Design Resources
     <br>Advanced VAV system design guidance with comparison table for common fan types</li>
-  <li><a href="https://www.amca.org/assets/resources/public/userfiles/file/AMCA_010-013_Brendel.pdf">The Role of Fan Efficiency in Reducing HVAC Energy Consumption</a> by Dr. Michael Brendel, AMCA inmotion
+  <li><a href="https://www.csemag.com/articles/the-role-of-fan-efficiency-in-reducing-hvac-energy-consumption​">The Role of Fan Efficiency in Reducing HVAC Energy Consumption</a> by Dr. Michael Brendel, AMCA inmotion
     <br>Description of the fan efficiency grade (FEG) for classifying fan energy efficiency potential. The FEG is incorporated into ASHRAE Standard 90.1-2013 to specify minimum fan efficiency requirements.</li>
   <li><a href="https://www.amca.org/assets/resources/public/resources/FEG_Whitepaper_single%20pages.pdf">Introducing Fan Efficiency Ratios</a>, Air Movement and Control Association International, Inc.
     <br>Introduction to the fan efficiency ratio, a metric for evaluating fan efficiency relative to a baseline efficiency, both of which are calculated at a single airflow and pressure point.</li>

src/app/commercial-hvac/distribution/fans/procure/procure.component.html

@@ -20,11 +20,11 @@ <h1>{{ title }}</h1>
 
 <h2>Resources</h2>
 <ul>
-  <li><a href="https://www.amca.org/assets/resources/public/userfiles/file/I2SL-Fan%20Codes-Standards-2013-Fan%20Codes-Standards.pdf">Fan Efficiency Codes and Standards</a>, Air Movement and Control Association International, Inc., 2013
+  <li><a href="https://www.amca.org/assets/resources/public/pdf/Education%20Modules/AMCA%20211-13%20(Rev.%2010-18).pdf​">Fan Efficiency Codes and Standards</a>, Air Movement and Control Association International, Inc., 2013
     <br>Description of codes and standards relevant to HVAC fan selection including AMCA Standard 205 and ASHRAE 90.1.</li>
   <li><a href="https://www.aerovent.com/wp-content/uploads/2018/12/Fan-Arrangements-Rotation-Discharge-Motor-Position-FE-3900.pdf">Fan Arrangements, Rotation, Discharge and Motor Position</a>, Fan Engineering: FE-3900, Aerovent
     <br>Descriptions of fan arrangements, rotation, discharge, and motor position using standard industry notations. </li>
-  <li><a href="https://www.amca.org/assets/resources/public/userfiles/file/Energy%20Initiative%20Web%20Pages/024-031_cermak_WEB.PDF">Fan Efficiency Requirements for Standard 90.1-2013</a>, by John Cermak and Michael Ivanovich, ASHRAE Journal, April 2013, reprinted with permission by AMCA International
+  <li><a href="https://technologyportal.ashrae.org/Journal/ArticleDetail/1321">Fan Efficiency Requirements for Standard 90.1-2013</a>, by John Cermak and Michael Ivanovich, ASHRAE Journal, April 2013, reprinted with permission by AMCA International
     <br>Description of AMCA Standard 205 for characterizing fan efficiency and how it is incorporated into ASHRAE 90.1-2013.</li>
 </ul>