S.A. Tassou

Brunel University of London

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Georgios A. Florides

Cyprus University of Technology

Soteris A. Kalogirou

Cyprus University of Technology

Y.T. Ge

London South Bank University

C.J. Marquand

University of Westminster

D.R. Wilson

Edison International (United States)

Nicoletta Kythreotou

Brunel University of London

Paul Christodoulides

Cyprus University of Technology

Valentina Stojceska

Brunel University of London

L.C. Wrobel

Pontifical Catholic University of Rio de Janeiro

Giannis Katsaros

Brunel University of London

Cooperative Institutions

Brunel University of London

Centre for Sustainable Energy

Cyprus University of Technology

Newcastle University

University of Manchester

Ministry of Agriculture, Natural Resources and Environment

Geological Survey Department

Imperial College London

London South Bank University

Norwegian University of Science and Technology

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An investigation of the recent advances of the integration of solar thermal energy systems to the dairy processes

Renewable and Sustainable Energy Reviews (2022)

Kemal Masera Hadi Tannous Valentina Stojceska S.A. Tassou

The dairy industry uses a number of energy intensive thermal processes like cooling, heating and cleaning that require thermal and electrical energy. Those processes use temperatures between 4 °C and 200 °C that could be potentially powered using solar thermal energy but one of the main challenges is the complexity of selection and integration of the components used for the solar system such as solar collectors, solar heating and cooling equipment. The heating processes with the temperature requirements between 300 °C and 400 °C are mainly powered using solar parabolic trough collectors and linear Fresnel reflectors while cooling processes with solar absorption chillers. The excesses of energy of above 200 °C could be stored in a thermal energy storage system. This study critically evaluates the thermal demands of the dairy processes, reviews their existing solar thermal applications and recommends a concept design for solar thermal energy integration based on the available data. The concept design includes connection of the solar collectors and thermal energy storage to the thermal energy supply line through the absorption chiller and steam drum. The benefits comprise flexibility of the heat transfer fluid selection, independency of solar energy production to conventional production and no further modification of the conventional production system or additional capacity to support the future upgrades are required.

Chiller

Absorption refrigerator

Parabolic trough

Thermal energy

10.1016/j.rser.2022.113028

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Citations (39)

Crossing CO2 equator with the aid of multi-ejector concept: A comprehensive energy and environmental comparative study

Energy (2018)

Paride Gullo Konstantinos M. Tsamos Armin Hafner Krzysztof Banasiak Y.T. Ge

Carbon Footprint

10.1016/j.energy.2018.08.205

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Citations (58)

Modelling and control approaches for energy reduction in continuous frying systems

Applied Energy (2013)

Hongwei Wu S.A. Tassou Tassos G. Karayiannis

Transient (computer programming)

10.1016/j.apenergy.2013.01.084

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Citations (11)

A proposed methodology for the calculation of direct consumption of fossil fuels and electricity for livestock breeding, and its application to Cyprus

Energy (2012)

Nicoletta Kythreotou Georgios A. Florides S.A. Tassou

Consumption

Benchmarking

10.1016/j.energy.2012.01.077

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Citations (31)

Social sustainability assessments of industrial level solar energy: A systematic review

Renewable and Sustainable Energy Reviews (2023)

Imaad Zafar Valentina Stojceska S.A. Tassou

This study discusses the application of Social Life Cycle Assessment on existing Solar Thermal Energy and similar energy systems used in industrial supply chains. Practitioners assessing STE supply chains using the current assessment framework appraised social issues such as fair payment and employee health and safety by collecting quantitative data on employee salary and social risk. Qualitative assessment methods were also deployed through community questionnaires to measure social acceptance and audits to evaluate health and safety policy compliance. The resulting data was processed using Type 1 protocol, a model which measures social performance to assess the magnitude of a company's social impact on its stakeholders. This parameter was found to take regional and universal social standards as neutral criteria to grade the level of policy compliance, regarding fairness of employee pay and client relationships. Qualitative feedback from social audits and interview dialogue was also compared to these standards, to determine the level of a company's compliance with social policy. Our literature review revealed that current practitioners provided limited elaborative commentary on an organisation's social performance within a given case study, limiting managerial insight into observed gaps in social performance. This was found to be rooted in the lack of comprehensive and empirically driven methodology adopted by most practitioners. Our research aims to develop a framework that will provide more critical insight for managerial decision-making in order to improve the social sustainability of newly developed STE and related renewable energy systems.

Salary

10.1016/j.rser.2023.113962

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Citations (12)

Energy analysis of buildings employing thermal mass in Cyprus

Renewable Energy (2002)

Soteris A. Kalogirou Georgios A. Florides S.A. Tassou

TRNSYS

Glazing

Thermal mass

Cooling load

Dynamic insulation

10.1016/s0960-1481(02)00007-1

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Citations (90)

Parametric analysis of the factors affecting the efficiency of ground heat exchangers and design application aspects in Cyprus

Renewable Energy (2016)

Panayiotis Pouloupatis S.A. Tassou Paul Christodoulides Georgios A. Florides

The objective of this paper is to examine the factors affecting the sizing and positioning of Ground Heat Exchangers (GHEs) in Cyprus. This is achieved through the investigation of the influence of the temperature, thermal conductivity, specific heat and density of the ground as well as pipe diameter on the performance of GHEs using computer software modelling in conjunction with test data. Also, the long term temperature variation of the ground around the boreholes is examined since this affects the positioning of the GHEs. Because of the large number of parameters involved in the design the desired result can be achieved in various ways by considering the specific parameters. The results of the simulations have shown that, generally speaking, the island of Cyprus is suitable for geothermal heat pumps.

10.1016/j.renene.2016.11.006

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Citations (15)

Evaluation of the application of Phase Change Materials (PCM) on the envelope of a typical dwelling in the Mediterranean region

Renewable Energy (2016)

Gregoris Panayiotou Soteris A. Kalogirou S.A. Tassou

In this work the application of macroencapsulated Phase Change Materials (PCM) on the envelope of a typical dwelling in the Mediterranean region is evaluated. This is the first time PCMs are evaluated for application under the specific climatic conditions of Cyprus. The simulation process is carried out using Transient Systems Simulation software (TRNSYS). Two types of simulations have been carried out: the energy rate control test and the temperature level control test. The energy savings achieved by the addition of the PCM layer on the envelope of the test cubicle compared to the base case (no insulation) ranged between 21.7 and 28.6%. The optimum PCM case was also combined with a common thermal insulation topology in Cyprus. The results showed that the maximum energy savings per year was achieved by the combined case (66.2%). In the temperature level control test the constructions containing PCM performed better during summer. The results of the optimum PCM case and the combined case were economically evaluated using Life Cycle Cost (LCC). The results of this analysis showed that the PCM case has a very long payback period (14 ½ years) while this is changing when it is combined with insulation where the payback period is reduced to 7 ½ years.

TRNSYS

Payback period

Phase-change material

Envelope (radar)

Building envelope

Transient (computer programming)

10.1016/j.renene.2016.05.043

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Citations (130)

A review of simple to scientific models for anaerobic digestion

Renewable Energy (2014)

Nicoletta Kythreotou Georgios A. Florides S.A. Tassou