Browsing by Author "Lal, Nathan S."

Now showing items 1-5 of 6

  • Accounting for stream variability in retrofit problems using Monte Carlo simulation

    Lal, Nathan S.; Atkins, Martin John; Walmsley, Michael R.W.; Neale, James R.; Walmsley, Timothy Gordon (2018)
    The aim of this paper is to use Monte Carlo simulation to analyse the effect of stream data variation on the economic performance of retrofit designs. The input stream data is fitted to a distribution which can be sampled ...
  • Automated retrofit of heat exchanger networks

    Lal, Nathan S. (The University of Waikato, 2020)
    In a large industrial processing plant, a significant amount of process heat is generated using fossil fuels, contributing to New Zealand’s overall greenhouse gas emissions. While New Zealand’s renewable energy sources ...
  • Flexibility Analysis of Heat Exchanger Network Retrofit Designs using Monte Carlo Simulation

    Lal, Nathan S.; Atkins, Martin John; Walmsley, Timothy Gordon; Walmsley, Michael R.W.; Neale, James R. (2019)
    The aim of this paper is to use Monte Carlo Simulation (MCS) to conduct an analysis of the flexibility and controllability of retrofitted Heat Exchanger Network (HEN) designs. Historical plant data is often uncertain and ...
  • A modified energy transfer diagram for heat exchanger network retrofit bridge analysis

    Walmsley, Michael R.W.; Lal, Nathan S.; Walmsley, Timothy Gordon; Atkins, Martin John (AIDIC (Italian Association of Chemical Engineering), 2017)
    The aim of this paper is to modify the Energy Transfer Diagram (ETD) to be able to graphically determine retrofit options and the amount of heat transferred. The ETD is a graphical methodology to represent a process and/or ...
  • Relating bridge analysis for heat exchanger network retrofit identification to retrofit design

    Walmsley, Timothy Gordon; Lal, Nathan S.; Varbanov, Petar S.; Klemeš, Jiří Jaromír (AIDIC Servizi S.r.l., 2018)
    The aim of the paper is to improve a recently developed automated HEN retrofit targeting method by linking the shapes of the Exchanger Shifted Composite Curve (ESCC) and Exchanger Grand Composite Curve (EGCC) to the required ...