Journal Articles

Permanent URI for this collectionhttps://mro.massey.ac.nz/handle/10179/7915

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Start date: 2023Subject: search.filters.subject.decarbonization

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    Bridging Sustainability and Performance: Conceptualizing Net-Zero Integration in Construction Supply Chain Evaluations
    (MDPI AG, 2025-06-24) Hettiarachchi I; Rotimi JOB; Shahzad WM; Kahandawa Appuhamillage R
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    Decarbonising cities: exploring regional energy justice implications
    (Taylor and Francis Group, 2025-05-06) Regier AJ; Berka AL; Hoicka CE
    To meet energy demand and achieve climate and energy decarbonisation targets, cities adopt a range of mechanisms to facilitate renewable electricity development from their surrounding regions. These mechanisms are likely to have implications for regional community co-benefits, social acceptance of renewable energy projects, and energy justice. This research used document analysis to identify the procurement mechanisms being used by cities to source renewable electricity from surrounding regions and the types of actors involved. The analysis focussed on 27 cities pursuing ambitious 100% renewable energy or carbon neutrality goals and whose plans indicate engagement with their surrounding regions. The results point to eight types of mechanisms used by cities to develop renewable energy in their surrounding region. Of the 56 occurrences identified, 55 involved public actors, 25 involved private actors, and 12 involved civic actors. The findings demonstrate that cities are overcoming their local energy constraints by seeking to develop renewable electricity in their surrounding regions utilising mechanisms that are dominated by the involvement of public and private actors, leaving civic actors underrepresented. Key policy highlights - Cities with ambitious renewable energy goals require large amounts of renewable energy to decarbonise. To achieve their decarbonisation goals, cities are adopting a range of mechanisms to facilitate renewable electricity development in the regions that surround them. - This study identifies eight types of mechanisms used by cities to drive renewable energy development within their surrounding region; power purchase agreements, project acquisition, city-led project development, incumbent-city collaborative project development, niche-city collaborative project development, centralised decision making, advocacy, and market stimulation. Of the 56 occurrences identified, most were dominated by public (n = 55/56) and private actors (n = 25/56), with little involvement of civic actors (n = 12/56) such as households, citizens and community organisations. - Limited citizen involvement in renewable energy development can hinder equitable benefits and social acceptance for regional communities. Civic participation in regional energy development is essential for a just and successful energy transition.
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    Multi-Level Process Integration of Heat Pumps in Meat Processing
    (MDPI (Basel, Switzerland), 2023-04-13) Klinac E; Carson JK; Hoang D; Chen Q; Cleland DJ; Walmsley TG; Zuorro A; Papadopoulos AI; Seferlis P
    Many countries across the globe are facing the challenge of replacing coal and natural gas-derived process heat with low-emission alternatives. In countries such as New Zealand, which have access to renewably generated electricity, industrial heat pumps offer great potential to reduce sitewide industrial carbon emissions. In this paper, a new Pinch-based Total Site Heat Integration (TSHI) method is proposed and used to explore and identify multi-level heat pump integration options at a meat processing site in New Zealand. This novel method improves upon standard methods that are currently used in industry and successfully identifies heat pump opportunities that might otherwise be missed by said standard methods. The results of the novel method application suggest that a Mechanical Vapour Recompression (MVR) system in the Rendering plant and a centralized air-source heat pump around the hot water ring main could reduce site emissions by over 50%. Future research will develop these preliminary results into a dynamic emissions reduction plan for the site, the novel methods for which will be transferrable to similar industrial sites.