ASME EA-1G:2010 pdf free download – Guidance for ASME EA-1, Energy Assessment for Process Heating Systems
1.1 Scope
This guidance document provides an application guide on how to utilize ASME EA-1, Energy Assessment for Process Heating Systems. This guidance document provides background and supporting information to assist in applying the standard.
1.2 Limitations
ASME EA-1 does not provide guidance on how to perform a process heating energy assessment, but sets the requirements that need to be performed during the assessment. ASME EA-1 was written in a form suitable for a standard, with concise text and without examples or explanations. This document was developed to be used in conjunction with the standard in order to give basic guidance on how to fulfll the requirements of the stand- ard. This document is only a guide, does not set any new requirements, and ASME EA-1 can used with or without this document.
2 definition
Sassessment: activities undertaken to identify energy performance improvements in a process heating sys- tem that consider all components and functions, from energy inputs to the work performed as the result of these inputs. Individual components or subsystems might not be addressed with equal weight, but sys- tem assessments shall be suffciently comprehensive to identify the major energy effciency opportunities for improving overall system energy performance. System impact versus individual component characteristics should be discussed.
energy use baseline: amount of energy use measured during the operating conditions existing at the time of the assess- ment. It should be expressed in terms of energy per unit of production, energy per unit of mass or volume pro- duced or in terms of energy per unit of time. Examples of the base line units are Btu/lb (kWh/kg), Btu/hr (kW), or Btu/unit of product (widget) (kWh/unit of product). functional requirement: description of what the plant expects the manufacturing system to do using the heat- ing system. The parameters could be expressed in terms such as production output, quality (insofar as it can be controlled by the heating process), energy consumption (per production unit, if applicable), and emissions. furnace: term generically used in this Standard to describe process heating equipment such as furnaces, melters, ovens, and heaters. heat balance: a procedure in which an imaginary control boundary is placed around a process heating system and all energies and mass fows crossing that boundary are determined and summed. maximum installed
energy input rate: The maximum amount of energy that can be supplied, usually expressed in such terms as Btu/hr, kW, kCal/hr, and kJ/h. In most cases the maximum installed energy input rating can be obtained from the nameplate of the heating equipment, the operating manual, design drawings, or documents provided by the equipment supplier. In some cases this is known as “connected heat input” or power rating.
resource utilization: use of such available resources as energy, money, material, and manpower to perform the necessary functions in plant operation. Sankey diagram: specifc type of fow diagram in which fows are represented by arrows. The width of the arrows is shown proportionally to the fow quantity. They are typically used to visualize energy or material transfers between processes. thermal effciency: for a particular process heating sys- tem, it is the ratio of the energy absorbed by the material being processed to the total energy consumed to heat the system.