ORCID Profile
0000-0002-6688-6305
Current Organisation
University of Leeds
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Publisher: Thomas Telford Ltd.
Date: 06-2009
DOI: 10.1680/ENSU.2009.162.2.101
Abstract: Many aspects of the performance of infrastructure slopes are affected by vegetation, but many are conventionally overlooked by engineers. This paper explores in detail the engineering aspects associated with vegetation on infrastructure slopes and the conflicts that must be managed in order to maintain safety and serviceability. It also examines the importance of roadside corridors as grassland habitats and the difficulties of managing and maintaining the ersity of species using safe and economic management practices. The bio ersity of roadside grassland habitats is discussed in this paper, but it is expected that these findings will offer general lessons for the vegetation management of infrastructure slopes.
Publisher: MDPI AG
Date: 03-12-2017
DOI: 10.3390/EN10122044
Abstract: Increasing use of the ground as a thermal reservoir is expected in the near future. Shallow geothermal energy (SGE) systems have proved to be sustainable alternative solutions for buildings and infrastructure conditioning in many areas across the globe in the past decades. Recently novel solutions, including energy geostructures, where SGE systems are coupled with foundation heat exchangers, have also been developed. The performance of these systems is dependent on a series of factors, among which the thermal properties of the soil play a major role. The purpose of this paper is to present, in an integrated manner, the main methods and procedures to assess ground thermal properties for SGE systems and to carry out a critical review of the methods. In particular, laboratory testing through either steady-state or transient methods are discussed and a new synthesis comparing results for different techniques is presented. In situ testing including all variations of the thermal response test is presented in detail, including a first comparison between new and traditional approaches. The issue of different scales between laboratory and in situ measurements is then analysed in detail. Finally, the thermo-hydro-mechanical behaviour of soil is introduced and discussed. These coupled processes are important for confirming the structural integrity of energy geostructures, but routine methods for parameter determination are still lacking.
Publisher: Springer International Publishing
Date: 24-08-2018
Publisher: MDPI AG
Date: 15-07-2019
DOI: 10.3390/EN12142700
Abstract: Energy piles are a novel form of ground heat exchanger (GHE) used in ground source heat pump systems. However, characterizing the pile and ground thermal properties is more challenging than for traditional GHEs. Routine in-situ thermal response testing (TRT) methods assume that steady state conditions in the GHE are achieved within a few hours, whereas larger diameter energy piles may take days or even weeks, thereby incurring significant costs. Previous work on pile TRTs has focused on small diameters up to 450 mm. This paper makes the first rigorous assessment of TRT methods for larger diameter piles using field and laboratory datasets, the application of numerical and analytical modelling, and detailed consideration of costs and program. Three-dimensional numerical simulation is shown to be effective for assessing the data gathered but is too computationally expensive for routine practice. Simpler fast run time steady state analytical models are shown to be a theoretically viable tool where sufficient duration test data is available. However, a new assessment of signal to noise ratio (SNR) in real field data shows how power fluctuations cause increased uncertainty in long duration tests. It is therefore recommended to apply transient models or instead to carry out faster and more cost-effective borehole in-situ tests for ground characterization with analytical approaches for pile characterization.
Publisher: Elsevier BV
Date: 12-2022
Publisher: Elsevier BV
Date: 11-2016
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Fleur Loveridge.