Showing papers by "Savvas A. Tassou published in 2012"
TL;DR: In this paper, the design and simulation of two renewable-based standalone energy systems for application in two different locations are carried out, namely, Nicosia, Cyprus and Nice, France.
75 citations
TL;DR: In this paper, the thermophysical properties of paraffin in water emulsions, such as latent heat of fusion, melting and freezing temperature ranges, viscosity and the effect of surfactants, have been tested using appropriate experimental techniques.
75 citations
TL;DR: In this article, a post-print version of the article can be accessed from the link below - http://www. Elsevier.com/content/content-related-articles.
40 citations
TL;DR: In this article, the authors report on experimental and theoretical investigations of such a system and its potential application in a supermarket and show that the system can offer energy savings of 30%, greenhouse gas emission savings of 43% and a payback period of just over 3 years compared to conventional systems.
Abstract: The environmental impact of supermarkets is significant not only because of the indirect effect from CO2 emissions at the power stations but also due to the direct effect arising from refrigerant leakage to the atmosphere. One approach through which the overall energy efficiency can be increased and the environmental impacts reduced, is through the integration of CO2 refrigeration and trigeneration systems where the refrigeration generated by the trigeneration system is used to condense the CO2 refrigerant in a cascade arrangement. This paper reports on experimental and theoretical investigations of such a system and its potential application in a supermarket. The results show that the system can offer energy savings of 30%, greenhouse gas emission savings of 43% and a payback period of just over 3 years compared to conventional systems.
30 citations
TL;DR: The results on energy production provide an indication of the importance of promotion of anaerobic digestion for the treatment of biodegradable waste to the energy balance of the country.
30 citations
TL;DR: In this article, the authors established a methodology for the estimation of the direct consumption of fossil fuels and electricity for livestock breeding, excluding transport, for locations where full data sets are not available.
23 citations
TL;DR: In this paper, the authors considered the energy flows in crisp frying using a First Law of Thermodynamics modelling approach which was verified against data from a potato crisp production line and found that most of the energy used is associated with the evaporation of water present in the potato and on the surface of potato slices.
20 citations
TL;DR: In this article, the potential optimization of the CO 2 evaporator design in an existing multi-deck medium temperature display cabinet charged previously with R404A refrigerant was investigated, and the optimized designs of CO 2 cabinet evaporator coil geometries and refrigerant side operating parameters have been attained.
Abstract: The CO 2 refrigerant is widely applied in retail refrigeration systems to replace HFC fluids such as R404A, but its system performance requires further improvement. One feasible method would be to pinpoint the matching components of the system, in particular its evaporator coils. This paper focuses on the potential optimization of the CO 2 evaporator design in an existing multi-deck medium temperature display cabinet charged previously with R404A refrigerant. To achieve this target, a display cabinet model with an integrated CFD and detailed evaporator sub models was utilized. This model could readily imitate the actual cabinet performance under varied operating conditions and component designs. Various design options of the CO 2 cabinet evaporator were considered and their impacts on the cabinet performances were predicted by the integrated model. Ultimately, the optimized designs of CO 2 cabinet evaporator coil geometries and refrigerant side operating parameters have been attained.
6 citations