A large percentage of total energy consumed in an industrial plant is used for process heating equipment such as furnaces, heaters, ovens, kilns, and boilers. This equipment uses a variety of fuels to supply heat required to raise temperatures of or induce phase change (melting, vaporizing) in a variety of materials. It is possible to reduce the energy use of process heating equipment by conducting an energy audit or assessment that identifies areas of energy use or losses and take actions to reduce these losses, resulting in a reduction in overall energy use.
The Process Heating Assessment and Survey Tool, commonly known as PHAST, was developed to conduct an energy assessment or audit of the heating equipment used by many industries. The tool has been used in several industrial plants in a number of countries to identify energy use distribution and analysis to identify and estimate energy losses, as well as to analyze potential energy savings by applying commonly recommended energy savings measures. The Excel version of PHAST, known as PHASTEx, is specifically designed to enhance the capabilities of PHAST. It can be used where it is necessary to consider multicomponent charge-loads and account for a number of different sections for various areas of energy loss.
PHASTEx can be used to estimate potential energy savings with application of energy saving measures, which are listed as an appendix to the PHASTEx tool and discussed in process heating training workshops. The results of potential energy savings with application of energy saving measures are displayed under a separate column, “modified conditions.”
No installation required, simply open the spreadsheet within Microsoft Excel.
The MIT License
Copyright (c) 2016 PHASTEx, Department of Energy Advanced Manufacturing Office, Oak Ridge National Laboratory
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