BS ISO 50045:2019,Technical guidelines for the evaluation of energy savings of thermal power plants.BS ISO 50045:2019 pdf free download here.
BS ISO 50045:2019 gives general technical guidelines for evaluating energy savings of thermal power plants before and/or after implementing energy performance improvement action(s) (EPIAs). It includes evaluation, unit component efficiency, indexes calculation, analyses and reporting.
BS ISO 50045:2019 is applicable to existing thermal power generating units (TPGUs), where fossil fuels (e.g. coal, oil, natural gas) are combusted to generate electricity only or to supply thermal energy with the additional production of electricity (i.e. combined cycle power plants).
Results obtained in accordance with this document can be used either to evaluate the potential of energy savings or to determine fulfilment of contract guarantees. They do not provide a basis for comparison of the energy savings between TPGUs.
BS ISO 50045:2019 does not prescribe performance tests or measurements for TPGU equipment components/systems, the sampling and analysis of the fuels used, substances added for control of emissions (e.g. halide, limestone) and by-products (e.g. ash, gypsum), and instruments to be employed, but it does specify parameters of interest in the determination of energy savings. Applicable procedures can be found in relevant documents (published or to be published).
This document provides a general and practical framework for evaluating energy savings of thermal power plants, including steam power plants based on the Rankine cycle, gas turbine plants and combined cycle systems. These power plants mainly comprise one or several thermal power generating anits (TPGUs) to produce electricity only or both electricity and heat (i.e. cogeneration facilities and combined heat and power systems) by burning coal, oil products, natural gas and/or other fuels.
This document covers principles, procedures, evaluation indexes and calculation methods when determining the potential of energy savings of an existing TPGU before (an) energy performance mprovement action(s)(EPlAs) or evaluating the contract guarantees of its energy savings after the EPIA(s)(e.g. energy performance contracting).
5.2 Principles
The following principles should be followed.
—The appropriate measurement boundary for the EPlA should be determined, and interactive effects
should be taken into account.
—The relevant variables affecting energy performance should be identified for the equipment involved
in the EPIA.
—The appropriate baseline measurement period should be determined to effectively represent energy
under expected operating conditions.
—The appropriate modelling approach (e.g. thermodynamic or statistical) should be determined to
account for changes in relevant variables for the baseline case.