ASME EA-1–2009 pdf free download.Energy Assessment for Process Heating Systems.
2 DEFINITIONS
activities undertaken to identify energy performance improvements in a process heating system 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 system assessments shall be sufficiently comprehensive to identify the major energy efficiency opportunities for improving overall system energy performance. System impact versus individual component characteristics should be discussed.
a furnace into which the entire work load is introduced periodically.
continuous furnace: a furnace into which the work load is introduced continuously or at short time intervals.
erergy intensity (also called speculc energy): the ratio of the energy used during a heating operation to the product unit or mass that absorbs the energy.
amount of energy use measured during the operating conditions existing at the time of the assessment. It should be expressed in terms of energy per unit of production, energy per unit of mass or volume produced or in terms of energy per unit of time. Examples of the baseline units are: Btuflb (kWh/kg), Btu/hr (kW), or Btu/unit of product (widget) or (kWh/unit of product).
description of what the plant expects the manufacturing system to do using the heating 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: a term generically used in this Standard to dc- scribe process heating equipment, such as furnaces, melters, ovens, and heaters.
(C) other information sources, such as drawings, manuals, test reports, historical utility bill information, computer monitoring and control data, control panels, and calibration records
4.5 Assessment Goals and Scope
The overall goals and scope of the assessment shall be discussed and agreed upon at an early stage by the assessment team. The overall goal of the assessment shall include identification of performance improvement opportunities in the process heating system being assessed and using a systems approach. The scope of the assessment shall define the portion(s) of the facility that are to be assessed.
4.6 InItial Data Collection and Evaluation
The following data shall be obtained for each of the process heating systems being evaluated:
(a) Type of energy (fuel, electricity, steam, etc.) used and power input ratings (when available) in terms of units, such as kW or Btu/h.
t’b) Actual production throughputs and energy use of specific processes in terms of Btu, kCal, kJ, or kWh over a defined time interval (hour, shift, day, week, month, etc.) collected from individual equipment meters or other available resources. Where individual meters are not installed on the equipment, the process heating energy use information shall be collected at the plant level closest to the process heating equipment, if it is useful.
(c) Where individual meters are not available, energy use should be estimated by using information on operating hours, percentage of the installed or designed equipment heat input rate, and equipment up-time or load factor.
4.6.1 Initial Facility Specialist Interviews. The assessment team shall contact personnel and specialists within the plant to collect information on operating practices and any specific operating considerations that affect energy use for the equipment. This information shall be used to help develop the site-specific goals and assessment plan of action (paras. 4.7 and 4.8).
4.6.2 Energy Project History. The assessment team shall collect and review information on energy saving projects, assessments, audits, baselines, or benchmarking already conducted for the process heating system.
4.6.3 PrImary Energy Cost. The cost data shall include values in terms of units such as cost per million Btu (MMl3tu) or kWh, or other similar terms, considering all charges, such as purchased cost, transportation cost, demand charges, neak rates. time-of-the—day rate.