ASME EA-2:2009 pdf free download

ASME EA-2:2009 pdf free download.Energy Assessment for Pumping Systems.
An assessment may also include other information, such as recommendations for improving resource utilization, reducing per unit production cost, reducing life-cycle costs, and improving environmental performance related to the assessed system(s). Assessment activities may include, but are not limited to, engaging facility personnel and providing information about the assessment process; collecting and analyzing data on system design, operation, energy use, and performance; identifying energy performance improvement opportunities; and making recommendations for system improvement and implementation in a written report. This report should document system design; quantify energy consumption and performance data; document the assessment process; show results, recommendations and savings projections; and improve facility personnel’s understanding of system energy use and operation.
All system assessments start with identifying the ultimate goal of the system. When the ultimate goal of the system has been established, the assessment continues to investigate how well-suited the existing system is to deliver the needed output from the perspective of both component selection and energy efficiency. See Fig. 1. An assessment thus encompasses more than iust looking at input and output of energy.
This Standard sets requirements for: organizing and conducting a pumping system assessment; analyzing the data from the assessment; and reporting
5.2.2 Level 2 Assessments. Level 2 and Level 3 assessments are quantitative (measurement-based) investigations to determine the energy savings potential of systems and include measurement of system variables, The difference between Level 2 and Level 3 assessments is the complexity of data gathering and, later on, the evaluation of the collected data.
Level 2 assessments shall be performed using data taken from the plant information systems, in paper or electronic format, or by using portable measuring devices. The measurements usually cover a limited amount of time, thus giving a snapshot of the operating conditions at the time of measurement.
In some cases a Level 2 assessment of the system is enough to determine the operating system efficiency and the savings potential. This is the case when it is clear that the observed operating conditions are representative for the operation of the systems and the changes in operating condition are small or nonexistent.
In some cases the pumping system can he fairly simple and straightforward, but the assessment is complicated due to influence on other systems that sets constraints on the possible changes to the pumping system.
5.2.3 Level 3 Assessments. Level 3 assessments shall be made on pumping systems where conditions vary substantially over time. In such systems, the assessment team shall measure system performance over a time period long enough to capture all operating conditions. This activity is usually associated with more extensive use of in-situ monitoring to ensure that the operating conditions can be accurately determined at the various duty points (i.e., design point, normal, maximum and minimum flow rates). The monitoring can be made by connecting transducers to data logging equipment and recording the sensor output, or in some plants, where historical information is stored, the relevant information might be downloaded from the plant information system.
5.3 Walk-Through
After the prescreening has been conducted and systems have been selected for further investigation, the assessment normally starts with a visual examination of each pumping system to be assessed under Level 2 or Level 3. This shall entail walking the systems from start to finish ensuring that the information provided to the assessment team reflects the configuration of the existing systems.