title: Relating bridge analysis for heat exchanger network retrofit identification to retrofit design

authors: Walmsley, Timothy Gordon

abstract: 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 HEN retrofit design measures. The automated HEN retrofit targeting method is based on Bridge Analysis, which identifies new and existing utility paths for energy saving through the enhancement and/or addition of heat exchanger area and the installation of new exchangers. To build the required understanding, generic cases are analysed, one of which is presented. Links between the Exchanger Composite Curves with the required HEN retrofit design are established. The analysis concludes that the Heat Surplus-Deficit Cascade for some recovery exchangers may be divided two sections – Pinched and non-Pinched sections – to better represent and identify the number and type of modifications that a retrofit opportunity will require.

text: Relating bridge analysis for heat exchanger network retrofit identification to retrofit design 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 HEN retrofit design measures. The automated HEN retrofit targeting method is based on Bridge Analysis, which identifies new and existing utility paths for energy saving through the enhancement and/or addition of heat exchanger area and the installation of new exchangers. To build the required understanding, generic cases are analysed, one of which is presented. Links between the Exchanger Composite Curves with the required HEN retrofit design are established. The analysis concludes that the Heat Surplus-Deficit Cascade for some recovery exchangers may be divided two sections – Pinched and non-Pinched sections – to better represent and identify the number and type of modifications that a retrofit opportunity will require.

year: 2018

title: Short-Term viscoelastic properties of bloodmeal-based thermoplastics

authors: Bier, James Michael

subjects: biopolymers

abstract: The effects of sodium sulfite (SS) content and injection molding temperature on the viscoelasticity of bloodmeal-based thermoplastics were assessed using creep, recovery, and stress relaxation. Both SS and processing temperature affected standard mechanical properties and time-dependent behavior. Increased SS content led to greater creep, greater strain at break, and reduced modulus and mechanical strength of the material. Furthermore, the use of a higher injection molding temperature also reduced modulus and strength. Higher molding temperature also caused an increase in the fraction of creep recovered in 20 min. These results confirmed that increased SS increased chain mobility and that injection molding at 140°C instead of 120°C did not cause excessive thermal cross-linking.

text: Short-Term viscoelastic properties of bloodmeal-based thermoplastics The effects of sodium sulfite (SS) content and injection molding temperature on the viscoelasticity of bloodmeal-based thermoplastics were assessed using creep, recovery, and stress relaxation. Both SS and processing temperature affected standard mechanical properties and time-dependent behavior. Increased SS content led to greater creep, greater strain at break, and reduced modulus and mechanical strength of the material. Furthermore, the use of a higher injection molding temperature also reduced modulus and strength. Higher molding temperature also caused an increase in the fraction of creep recovered in 20 min. These results confirmed that increased SS increased chain mobility and that injection molding at 140°C instead of 120°C did not cause excessive thermal cross-linking.

year: 2014

title: [Review of Sociocultural realities: exploring new horizons by Angus Macfarlane, Sonja Macfarlane and Melinda Webber]

authors: McNae, Rachel Elizabeth

abstract: This article reviews the book "Sociocultural realities: exploring new horizons", by Angus Macfarlane, Sonja Macfarlane and Melinda Webber, Christchurch, New Zealand, Canterbury University Press, 2015, 220 pp., $45 (softcover), ISBN 9781927145722

text: [Review of Sociocultural realities: exploring new horizons by Angus Macfarlane, Sonja Macfarlane and Melinda Webber] This article reviews the book "Sociocultural realities: exploring new horizons", by Angus Macfarlane, Sonja Macfarlane and Melinda Webber, Christchurch, New Zealand, Canterbury University Press, 2015, 220 pp., $45 (softcover), ISBN 9781927145722

year: 2017