Ana Gonzalez HernandezUniversity of Cambridge | Cam · Department of Engineering
Ana Gonzalez Hernandez
Doctor of Engineering
About
12
Publications
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283
Citations
Introduction
Currently working as a resource efficiency consultant with Emerson's Operational Certainty Consulting team in Europe.
Additional affiliations
October 2014 - present
October 2010 - June 2014
Position
- Student
Publications
Publications (12)
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 singl...
Chemicals production is responsible for 10% of global energy consumption and 7% of greenhouse gas emissions. Material and energy efficiency are the focus of industrial and policy decision-makers but are often pursued as separate strategies. In addition, the solutions investigated are often localised without exploring the dynamics and efficiency rel...
To achieve agreed targets for reducing global carbon emissions, industry must become more resource- efficient. To this end, two viable strategies exist: energy efficiency and material efficiency. Despite the inherent interdependence of energy and materials in industrial processes, policy and industry treat these two strategies as isolated pursuits,...
Material efficiency is indispensable to reaching agreed targets for industry's energy and carbon emissions. Yet, in the EU, the energy- and emissions-saving potentials of this strategy continue to be framed as secondary outcomes of resource-related policies. Understanding why material efficiency has been overlooked as an energy/climate solution is...
Studies analysing the resource use of industrial production are often performed at highly aggregated levels, e.g. yearly across industry sectors. Conversely, the remit of work performed at the operational level is limited to the management of energy or concerned with aspects such as safety or reliability, both of which fail to consider material eff...
Studies analysing the resource use of industrial production are often performed at highly aggregated levels, e.g. yearly across industry sectors. Conversely, the remit of work performed at the operational level is limited to the management of energy or concerned with aspects such as safety or reliability, both of which fail to consider material eff...
Resource efficiency is an instrumental mitigation option in the steel industry but, existing studies have failed to provide a global analysis of the sector's energy and material use. Despite the interactions between energy and materials in steelmaking, recent studies investigate each of these resources in isolation, providing only partial insight i...
Resource efficiency is an instrumental mitigation option in the steel industry but, existing studies have failed to provide a global analysis of the sector's energy and material use. Despite the interactions between energy and materials in steelmaking, recent studies investigate each of these resources in isolation, providing only partial insight i...
Currently the metrics used to compare plants and to define how well these use resources take the form of energy intensities or yields. Both of these ignore the physical value of material by-products and focus separately on a single resource. A resource efficiency metric is proposed, measured in exergy, as a tool to more holistically compare the eff...
This study measures the resource efficiency of a basic oxygen steelmaking plant and develops visual maps of its resource use using raw energy and material data extracted directly from the control system. Resource efficiency is measured in units of exergy and resource flows are visualised in Sankey diagrams. Both the metric and the visuals are compu...
In this research we propose a physical measure of resource efficiency, based on exergy, which combines energy and material flows in a single dimensionless metric, bounded by 0 and 1. The inclusion of materials in the efficiency metric makes it possible to compare a wide range of industrial devices and processes, and even different sectors, using a...
Future vehicles for clean transport will require new powertrain technologies to further reduce CO2
emissions. Mobile organic Rankine cycle systems target the recovery of waste heat in internal combustion engines, with the exhaust system identified as a prime source. This article presents a design methodology and working fluid selection for radial t...