Nikolas Makasis

Analytical interpretation and numerical analysis of multiple energy pile thermal response tests

LA Bandeira Neto, GA Narsilio, N Makasis

Journal article  |  2023  |  Computers and Geotechnics

Thermal response tests (TRT) are an essential in situ test for the sizing of ground source heat pump systems. Its application on e..

Thermo-hydraulic analysis in geothermal energy walls

Yu Zhong, Asal Bidarmaghz, Guillermo A Narsilio, Nikolas Makasis

Journal article  |  2023  |  TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY

A ground source heat pump (GSHP) system provides efficient space heating and cooling and thus is regarded as a contributor to achi..

Investigating the Effectiveness of Energy Tunnels in Cooling Underground Substations

A Bidarmaghz, N Makasis, W Fei, GA Narsilio

Book Chapter  |  2023

Energy geo-structures have received rapid attention as part of the pursuit for renewable energy since they can exchange heat betwe..

Numerical investigation of geothermal pavements: Design optimisation & boundary conditions

Y Motamedi, N Makasis, X Gu, GA Narsilio, A Arulrajah, S Horpibulsuk

Journal article  |  2022  |  Transportation Geotechnics

Geothermal pavements comprise a newfound type of thermal geo-structures, an innovation in pavement construction contributing to gr..

Geothermal pavements: field observations, numerical modelling and long-term performance

Xiaoying Gu, Nikolas Makasis, Yaser Motamedi, Guillermo A Narsilio, Arul Arulrajah, Suksun Horpibulsuk

Journal article  |  2022  |  GEOTECHNIQUE

Geothermal pavement systems are a novel type of energy geostructure. They use sub-surface structures to exchange heat with the gro..

Investigating the thermal performance of energy soldier pile walls

Nikolas Makasis, Guillermo A Narsilio

Journal article  |  2022  |  GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT

Energy geo-structures are a promising application of shallow geothermal energy technologies utilising underground structures prima..

Experimental and numerical studies on an energy piled wall: The effect of thermally activated pile spacing

Yu Zhong, Guillermo A Narsilio, Nikolas Makasis, Calum Scott

Journal article  |  2022  |  GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT

Over the last decades, converting foundation elements such as piles, retaining walls and tunnel linings into energy geo-structures..

Bayesian parameter inference for shallow subsurface modeling using field data and impacts on geothermal planning

Monika J Kreitmair, Nikolas Makasis, Kathrin Menberg, Asal Bidarmaghz, Gareth J Farr, David P Boon, Ruchi Choudhary

Journal article  |  2022  |  DATA-CENTRIC ENGINEERING

Understanding the subsurface is crucial in building a sustainable future, particularly for urban centers. Importantly, the thermal..

Impact of simplifications on numerical modelling of the shallow subsurface at city-scale and implications for shallow geothermal potential.

N Makasis, MJ Kreitmair, A Bidarmaghz, GJ Farr, JM Scheidegger, R Choudhary

Journal article  |  2021  |  Sci Total Environ

Anthropogenic infrastructures in the shallow subsurface, such as heated basements, tunnels or shallow geothermal systems, are know..

Ground-Source Heat Pump Systems: The Effects of Variable Trench Separations and Pipe Configurations in Horizontal Ground Heat Exchangers

Yu Zhou, Asal Bidarmaghz, Nikolas Makasis, Guillermo Narsilio

Journal article  |  2021  |  ENERGIES

Ground-source heat pump systems are renewable and highly efficient HVAC systems that utilise the ground to exchange heat via groun..