John Gelegenis
John Gelegenis
Dr Chemical Engineer
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Optimization of biogas production by co-digesting whey with diluted poultry manure
J Gelegenis, D Georgakakis, I Angelidaki, V Mavris
Renewable energy 32 (13), 2147-2160, 2007
Optimization of biogas production from olive-oil mill wastewater, by codigesting with diluted poultry-manure
J Gelegenis, D Georgakakis, I Angelidaki, N Christopoulou, M Goumenaki
Applied Energy 84 (6), 646-663, 2007
Optimum insulation thickness for external walls on different orientations considering the speed and direction of the wind
I Axaopoulos, P Axaopoulos, J Gelegenis
Applied Energy 117, 167-175, 2014
Optimal economic thickness of various insulation materials for different orientations of external walls considering the wind characteristics
I Axaopoulos, P Axaopoulos, G Panayiotou, S Kalogirou, J Gelegenis
Energy 90, 939-952, 2015
A simplified quadratic expression for the approximate estimation of heating degree-days to any base temperature
JJ Gelegenis
Applied Energy 86 (10), 1986-1994, 2009
An advanced eLearning environment developed for engineering learners
M Samarakou, E Fylladitakis, WG Fruh, A Hatziapostolou, JJ Gelegenis
International Journal of Emerging Technologies in Learning 10 (3), 22-33, 2015
Heating of a fish wintering pond using low-temperature geothermal fluids, Porto Lagos, Greece
J Gelegenis, P Dalabakis, A Ilias
Geothermics 35 (1), 87-103, 2006
Perspectives of energy efficient technologies penetration in the Greek domestic sector, through the analysis of Energy Performance Certificates
J Gelegenis, D Diakoulaki, H Lampropoulou, G Giannakidis, ...
Energy Policy 67, 56-67, 2014
Optimum external wall insulation thickness considering the annual CO2 emissions
I Axaopoulos, P Axaopoulos, J Gelegenis, ED Fylladitakis
Journal of Building Physics 42 (4), 527-544, 2019
Undergraduate studies in energy education–A comparative study of Greek and British courses
JJ Gelegenis, DJ Harris
Renewable energy 62, 349-352, 2014
Estimation of hourly temperature data from their monthly average values:: case study of Greece
JJ Gelegenis
Renewable energy 18 (1), 49-60, 1999
Technical and economic assessment of geothermal soil heating systems in row covered protected crops: A case study from Greece
P Dalampakis, J Gelegenis, A Ilias, A Ladas, P Kolios
Applied Energy 203, 201-218, 2017
Analysis of Muskingum equation based flood routing schemes
JJ Gelegenis, SE Serrano
Journal of Hydrologic Engineering 5 (1), 102-105, 2000
An analytical study of critical factors in residential cogeneration optimization
J Gelegenis, G Mavrotas
Applied Energy 185, 1625-1632, 2017
Determination of fixed expenses in central heating costs allocation: An arising issue of dispute
JJ Gelegenis, D Harris, D Diakoulaki, H Lampropoulou, G Giannakidis
Management of Environmental Quality: An International Journal 26 (6), 810-825, 2015
Analysis of the energy and cost savings caused by using condensing boilers for heating dwellings in Greece
V Bonaros, J Gelegenis, D Harris, G Giannakidis, K Zervas
The 5th International Conference on Applied Energy ICAE, 2013
Feasibility for the use of flat booster reflectors in various photovoltaic installations
JJ Gelegenis, P Axaopoulos, S Misailidis, G Giannakidis, M Samarakou, ...
International Journal of Renewable Energy Research 5 (1), 82-98, 2015
Rapid estimation of geothermal coverage by district-heating systems
J Gelegenis
Applied energy 80 (4), 401-426, 2005
A multi-parametric mathematical approach on the selection of optimum insulation thicknesses in buildings
J Gelegenis, P Axaopoulos
Buildings 7 (1), 15, 2017
Consider heat pumps for CPI applications
JJ Gelegenis, NG Koumoutsos
Chemical engineering progress 92 (2), 1996
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