Jonathan Cullen results 34
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From CO2 emissions to resource efficiency: a new simplified methodology for assessing resource use in clinker manufacturingNARA Subscribed
A new simplified methodology for calculating industrial exergy-based Resource Efficiency (RE), estimating clinker manufacturing RE from publicly available CO 2 emissions data and existing technical knowledge, is proposed. The analysis builds on previous control-data exergy-based RE analysis of a real cement plant. The results of the two models tested follow the same trends found in the plant’s exergy-based RE analysis employin...
Greenhouse gas (GHG) emissions datasets are often incomplete due to inconsistent reporting and poor transparency. Filling the gaps in these datasets allows for more accurate targeting of strategies aiming to accelerate the reduction of GHG emissions. This study evaluates the potential of machine learning methods to automate the completion of GHG datasets. We use three datasets of increasing complexity with 18 different gap‐fil...
Mapping material use and embodied carbon in UK constructionNARA Subscribed
A decade of surface meteorology and radiation fluxes at Brewster Glacier in the Southern Alps of New ZealandNARA Subscribed
High‐altitude observations of mountain meteorology remain extremely rare in the Southern Alps despite their importance for detecting changes in seasonal snow and glacier extent. To address this, we present a unique in situ analysis of surface meteorology, including radiative forcing from clouds, using automatic weather station data obtained near the terminus of Brewster Glacier in the Southern Alps of New Zealand over the peri...
As the power and transport sectors decarbonize, industrial emissions will become the main focus of decarbonization efforts. Exergy analysis provides a combined material and energy efficiency approach to assess industrial plants, both of which are necessary to tackle industrial emissions. Existing studies typically use simulated, static data that cannot inform real plant operators. This paper performs an exergy analysis on data...
Calculating the chemical exergy of materialsNARA Subscribed
Modern society requires large amounts of materials which lead to emissions of greenhouse gases. Effective climate policy should focus on not just energy efficiency but material efficiency as well. Exergy analysis is a powerful metric used to identify opportunities for efficiency improvement in industrial resource flow systems. Exergy offers a single unified measure of energy and material resources and indicates the real thermo...