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Characterization study of a thermal oil-based carbon black solar nanofluid
Elsevier (2019)Carbon nanoparticles are very useful in solar thermal applications, since they absorb much of the solar spectrum, are cheap and have excellent optical properties. Carbon nanoparticlesthermal oil-based nanofluid was ... -
Circular concrete-filled dual steel columns with ultrahigh-strength concrete
Ernst und Sohn: OnlineOpen (2016)This paper presents the results of an experimental campaign in which the buckling resistance of 12 concrete-filled dual steel columns was ascertained. Whereas some papers in the literature describe investigations into ... -
Circularity indicator for municipal solid waste treatment plants
Elsevier (2022-11-04)Circular Economy (CE) has become an essential paradigm to achieve sustainability, and waste processing plants are an important element to minimise loss of resources in the production and consumption system. To incorporate ... -
CO2 with Mechanical Subcooling vs. CO2 Cascade Cycles for Medium Temperature Commercial Refrigeration Applications Thermodynamic Analysis
MDPI (2017-09)A recent trend to spread the use of CO2 refrigeration cycles in warm regions of the world is to combine a CO2 cycle with another one using a high performance refrigerant. Two alternatives are being considered: cascade and ... -
Colloidal stability of molten salt –based nanofluids: Dynamic Light Scattering tests at high temperature conditions
Elsevier (2019)The use of molten salt-based nanofluids as heat transfer fluids or thermal energy storage materials to increase the efficiency of Concentrated Solar Power plants has gained attention due to the use of the renewable ... -
Combinación de tecnologías en el levantamiento de planos. La iglesia parroquial de Portell
Asociación de profesores de expresión gráfica aplicada a la edificación (APEGA) (2015)La sucesiva aplicación de las nuevas tecnologías a la expresión gráfica arquitectónica ha supuesto una revolución en cada uno de los pasos que dan como resultado el levantamiento de planos. En general se puede decir ... -
Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat
Elsevier (2018)The thermal properties of various alkylthreo-9, 10-dihydroxystearates (DHSEs) prepared from non-edible fat were studied. Non-edible animal fat was hydrolyzed in a 93% yield with R. oryzae resting cells. Crude unsaturated ... -
Combining O-LCA and O-LCC to support circular economy strategies in organizations: Methodology and case study
Elsevier (2022-01-21)The pathway to sustainable development requires the transition from a linear economy to a circular economy (CE). For this transition to succeed, it is necessary for all kinds of organizations to participate actively by ... -
El combustible sólido recuperado: Producción y marco regulador
Instituto de Optica "Daza de Valdes": Instituto de Relaciones Internacionales "Daza de Valdes" (2017)En los diferentes modelos de plantas de tratamiento de residuos domiciliarios, además de recuperar materiales destinados al reciclaje, se generan unos rechazos que no tiene utilidad y que generalmente se destina a vertedero. ... -
Comments on "what the back of the object looks like: 3D reconstruction from line drawings without hidden lines"
Institute of Electrical and Electronics Engineers (2009-08)I comment on a paper describing a method for deducing the hidden topology of an object portrayed in a 2D natural line drawing. The principal problem with this paper is that it cannot be considered an advance on (or even ... -
Comments on “Vibration of simply supported beams under a single moving load: A detailed study of cancellation phenomenon” by C.P. Sudheesh Kumar, C. Sujatha, K. Shankar
Elsevier (2017-08)In a recent paper, Sudheesh Kumar et al. analysed, from dif- ferent points of view, the phenomenon of cancellation in simply supported beams under constant moving loads [1] . This article presented some novel facts ... -
Commercial refrigeration – An overview of current status
Elsevier (2015)Commercial refrigeration comprises food freezing and conservation in retail stores and supermarkets, so, it is one of the most relevant energy consumption sectors, and its relevance is increasing. This paper reviews the ... -
Comparative analysis of HFO-1234ze(E) and R-515B as low GWP alternatives to HFC-134a in moderately high temperature heat pumps
Elsevier (2020-12-17)This article provides a theoretical energy performance and carbon footprint analysis of the hydrofluoroolefin HFO-1234ze(E) and the mixture R-515B as low global warming potential (GWP) refrigerants to replace the ... -
Comparative evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a variable speed reciprocating compressor
Elsevier (2016-11-01)A comparative energetic evaluation of R1234yf, R1234ze(E) and R450A as alternatives to R134a in a variable speed compressor is carried out. A compressor model based on dimensionless numbers was obtained using the ... -
Comparative evaluation of the intermediate systems employed in two-stage refrigeration cycles driven by compound compressors
Elsevier (2010)This work presents an experimental evaluation, from an energy analysis point of view, for two of the most used inter-stage systems in two-stage vapour compression cycles driven by compound compressors: the direct liquid ... -
Comparative study of transcritical vapor compression configurations using CO2 as refrigeration mode base on simulation
Elsevier (2013-03)Despite of the excellent efficiency of the CO2 transcritical cycle in heat pump mode, there is a loss of efficiency in refrigeration mode compared with the subcritical vapor compression cycle with HFC refrigerants. This ... -
Comparison of different collection systems for sorted household waste in Spain
Elsevier (2010)The purpose of this study was to identify the different selective collection systems implemented in Spanish cities and to analyse the efficiency and extent to which the targets proposed by current law are met in each case. ... -
Comparison of environmental impacts of building structures with in situ cast floors and with precast concrete floors
Elsevier (2009)In this paper, the environmental impacts of two types of slab systems are studied. The first type, a concrete-based one-way spanning slab, is the most common solution in residential buildings in Spain. The second type, a ... -
Comparison of Grasping Performance of Tendon and Linkage Transmission Systems in an Electric-Powered Low-Cost Hand Prosthesis
The American Society of Mechanical Engineers (ASME) (2018-12-24)The popularization of fused deposition modelling technology and open-source microcontrollers have permitted the explosion of electric hand prostheses that can be designed, shared, built and operated at a low-cost, under ... -
Comparison of the carbon footprint of different patient diets in a Spanish hospital
Sage (2015)Abstract Objectives: Mitigating climate change requires management strategies to reduce greenhouse gas emissions in any sector, including the health system. Carbon footprint calculations should play a key role in ...