title: Pinch Analysis of an Industrial Milk Evaporator with Vapour Recompression Technologies

authors: Walmsley, Timothy Gordon

abstract: The present study focuses on applying Pinch Analysis to an industrial milk evaporator case study. Modern milk evaporators are typically integrated using both mechanical and thermal vapour recompression technologies as the primary means for attaining a high level of energy efficiency. A significant step change in energy efficiency for milk evaporators is achieved in this study by modifying the set-up of the concentration processing pathway in combination with an improved heat exchanger network design. To effectively perform the Pinch Analysis, a validated mass and energy balance model of the milk evaporator case study has been implemented in an Excel spreadsheet from which appropriate stream data may be extracted. In particular the Grand Composite Curve plays a critical role in identifying where vapour recompression units, which are a type of heat pump, may be applied to reduce thermal energy use by as much as 67 %, which represents an annual utility cost saving between 640 – 820 k$/y.

text: Pinch Analysis of an Industrial Milk Evaporator with Vapour Recompression Technologies The present study focuses on applying Pinch Analysis to an industrial milk evaporator case study. Modern milk evaporators are typically integrated using both mechanical and thermal vapour recompression technologies as the primary means for attaining a high level of energy efficiency. A significant step change in energy efficiency for milk evaporators is achieved in this study by modifying the set-up of the concentration processing pathway in combination with an improved heat exchanger network design. To effectively perform the Pinch Analysis, a validated mass and energy balance model of the milk evaporator case study has been implemented in an Excel spreadsheet from which appropriate stream data may be extracted. In particular the Grand Composite Curve plays a critical role in identifying where vapour recompression units, which are a type of heat pump, may be applied to reduce thermal energy use by as much as 67 %, which represents an annual utility cost saving between 640 – 820 k$/y.

year: 2015-08-27

title: Landslides research at Omokoroa

authors: Moon, Vicki G.

abstract: Summary of research progress into causes of landsliding at Omokora to the Operations and Monitoring Committee (Komiti Whakahaere) of the Western Bays District Council

text: Landslides research at Omokoroa Summary of research progress into causes of landsliding at Omokora to the Operations and Monitoring Committee (Komiti Whakahaere) of the Western Bays District Council

year: 2017-10-26

title: Integrating Maori perspectives into community resilience frameworks for the built environment

authors: Boston, Megan

abstract: Many governments and organisations have attempted to construct frameworks for improving community resilience, particularly as related to the built environment. Many frameworks, globally and locally, take a large overview of society and miss the potential to incorporate cultural, social, and engineering practices followed by indigenous people. However, there is much to learn from the traditional practices of Maori that could directly improve community resilience after a disaster. To date, little research has worked on integrating Maori cultural views into resilience frameworks. Using survey and interview data investigating Maori cultural views on resilience and aspects of the built environment, five Maori values were identified to strengthen resilience. These values are matauranga (knowledge), kotahitanga (unity), kaitiakitanga (guardianship), whakawhanaungatanga (relationships), and manakitanga (extending love). Further, communities can increase community cohesion and unity through adapting building and community layouts learned from observing traditional Maori practices, such as a central marae.

text: Integrating Maori perspectives into community resilience frameworks for the built environment Many governments and organisations have attempted to construct frameworks for improving community resilience, particularly as related to the built environment. Many frameworks, globally and locally, take a large overview of society and miss the potential to incorporate cultural, social, and engineering practices followed by indigenous people. However, there is much to learn from the traditional practices of Maori that could directly improve community resilience after a disaster. To date, little research has worked on integrating Maori cultural views into resilience frameworks. Using survey and interview data investigating Maori cultural views on resilience and aspects of the built environment, five Maori values were identified to strengthen resilience. These values are matauranga (knowledge), kotahitanga (unity), kaitiakitanga (guardianship), whakawhanaungatanga (relationships), and manakitanga (extending love). Further, communities can increase community cohesion and unity through adapting building and community layouts learned from observing traditional Maori practices, such as a central marae.

year: 2022