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Developments in life cycle assessment applied to evaluate the environmental performance of construction and demolition wastes
(Elsevier, 2016-04)
This paper provides a review of the literature that applies the life cycle assessment (LCA) methodology to the assessment of the environmental performance of the life cycle of construction and demolition waste (CDW) ...
Conversion of a direct to an indirect commercial (HFC134a/CO2) cascade refrigeration system: Energy impact analysis
(Elsevier, 2017)
Energy impact of conversion of a direct HFC134a/CO2 cascade refrigeration system to an indirect HFC134a-secondary fluid / CO2 cascade for commercial applications is experimentally analysed. Refrigeration systems, fully ...
Simulation of bubbly flow in vertical pipes by coupling Lagrangian and Eulerian models with 3D random walks models: Validation with experimental data using multi-sensor conductivity probes and Laser Doppler Anemometry
(Elsevier, 2012)
A set of two phase flow experiments for different conditions ranging from bubbly flow to cap/slug flow have been performed under isothermal concurrent upward air-water flow conditions in a vertical column of 3 m height. ...
Drop-in substitutes for R-600a. Experimental evaluation and optimization of a commercial fridge
(Elsevier, 2022-07-05)
This work aims to validate the hypothesis that refrigerant blends could allow energy savings in real refrigeration systems. For that purpose, five selected blends have been evaluated as drop-in substitutes in a domestic ...
Influence of Slenderness on High-Strength Rectangular Concrete-Filled Tubular Columns with Axial Load and Nonconstant Bending Moment
(American Society of Civil Engineers, 2012)
Forty-nine experimental tests were conducted on rectangular and square tubular columns filled with high-strength concrete (f'c=90 MPa) subjected to axial load and a nonconstant bending moment distribution. The test parameters ...
Optimal design of passive viscous dampers for controlling the resonant response of orthotropic plates under high-speed moving loads
(Elsevier, 2011)
In this article, the resonant response of plates traversed by moving loads is addressed being its main application the dynamic performance of railway bridges underhigh-speed traffic. An innovative alternative to reduce the ...
Flow regime transition criteria for two-phase flow in a vertical annulus
(Elsevier, 2011)
In this work, a new flow regime transition model is proposed for two-phase flows in a vertical annulus. Following previous works, the flow regimes considered are bubbly (B), slug (S) or cap-slug (CS), churn (C) and annular ...
Life cycle assessment of ceramic tiles: Environmental and statistical analysis
(Springer, 2011)
Purpose. The aim of this paper is to conduct a life cycle assessment study of ceramic tiles (single-fired glazed stoneware) in order to identify the stages that produce the greatest impact on the environment and the materials ...
Analysis of collection systems for sorted household waste in Spain
(Elsevier, 2012-09)
This work analyses the separate collection systems used in Spanish towns with between 5000 and 50,000 inhabitants. The study looks at the systems and their efficiency by means of the indicators fractioning rate, quality ...
Experimental evaluation of HCFC-22 replacement by the drop-in fluids HFC-422A and HFC-417B for low temperature refrigeration applications
(Elsevier, 2011-05)
The Regulation CE-1005/2009 has banned the use of virgin HCFC-22 in Europe from the 31st December 2009, because it contains chlorine, although its use is allowed up to the 31st December 2014 if it is recycled. Now, ...