ISO 13579-3:2013

Overview

ISO 13579-3:2013 provides a standardized methodology for measuring the energy balance and calculating the energy efficiency of batch-type aluminium melting furnaces. Published by ISO, this part defines measurement methods, calculation procedures, and the format for an energy balance and efficiency calculation evaluation report. It focuses specifically on the furnace system as designed by manufacturers and is not applicable to process efficiencies outside batch-type aluminium melting furnaces.

Key technical topics and requirements

• Scope and reference conditions: Measurements and calculations are based on defined reference conditions (e.g., location elevation adjustments where applicable).
• Energy flow and symbols: Uses a consistent energy flow diagram and symbol set (total energy input, fuel equivalent energy, thermal energy output, recycled energy, electrical generation loss).
• Types of energy covered:
  • Fuel equivalent energy (calorific value of fuel, waste, source gas, and electricity converted to fuel equivalent)
  • Other energy inputs (sensible heat of air, atomization agents, heat of reaction)
  • Thermal energy outputs (effective energy in products, exhaust gas sensible heat, wall losses, storage losses, cooling water loss)
  • Electrical energy and generation losses
  • Recycled energy (e.g., waste heat recovery)
• Measurement methods: Prescribes measurement points and methods for:
  • Fuel and atomization agents
  • Combustion air and exhaust gas
  • Product mass/temperature and furnace inner/surface temperatures
  • Inner furnace pressure, cooling water, and electrical auxiliary equipment
  • Utility generation and recycled energy capture
• Calculations:
  • Total energy input and output calculations
  • Determination of total energy efficiency
  • Reporting format for the energy balance and efficiency evaluation
• Documentation and uncertainty:
  • Includes annexes with a sample measurement report and guidance on assessment of uncertainty of the total energy efficiency.

Practical applications and users

ISO 13579-3:2013 is intended for:

• Furnace manufacturers validating design energy performance
• Plant engineers and maintenance teams performing energy audits and benchmarking
• Energy managers and sustainability officers tracking consumption and emissions reductions
• Consultants and certifiers preparing compliance and efficiency reports
• R&D teams evaluating retrofit options and heat recovery systems

Typical uses:

• Benchmarking specific energy intensity of aluminium melting operations
• Designing or verifying waste heat recovery and recycling systems
• Supporting regulatory compliance, capital investment decisions, and energy-efficiency improvements

Related standards

• ISO 13579-1:2013 - General methodology for measuring energy balance and calculating efficiency
• ISO 13574 - Vocabulary for industrial furnaces and associated processing equipment

Keywords: ISO 13579-3:2013, batch-type aluminium melting furnaces, energy balance, energy efficiency, measurement methods, thermal energy balance, furnace energy audit.