Persona:
Marcos del Cano, José Daniel

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jdmarcos@ind.uned.es
ORCID
0000-0002-2703-0918
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Apellidos
Marcos del Cano
Nombre de pila
José Daniel
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2018 - 201912020 - 20266
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Mostrando 1 - 7 de 7
  • Miniatura
    Publicación
    Intelligence-based prediction of coefficient of performance for a novel high-temperature industrial heat pump: Comparative performance of ANN and ANFIS models
    (Elsevier, 2026-02-02) Golpour, Iman; Marcos del Cano, José Daniel; Barbero Fresno, Rubén; Rovira de Antonio, Antonio José; Butean, Alex; Høeg, Arne; Comisión Europea
    This study presents a comparative evaluation of the artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) approaches for predicting the coefficient of performance (COP) of the HoegTemp, a high-temperature heat pump (HTHP) based on a Stirling cycle (SC) with a design heat capacity of 400 kW. Experimental tests were conducted at the IVAR biogas facility in Stavanger, Norway. This study employed a feedforward backpropagation neural network (FFBPNN) model with one and two hidden layers, with various numbers of neurons and three activation functions, as well as the ANFIS approach, to estimate the COP of the SC-HTHP. The FFBPNN model used the Levenberg-Marquardt (LM) and Bayesian regularization (BR) training algorithms, while the ANFIS model utilized a hybrid optimization method and grid partitioning. The ANN and ANFIS models were evaluated using the following input variables: temperature ratio (1.4–1.6 K/K), average source temperature (21–22 °C), average sink temperature (139–199 °C) and hot water inlet temperature (137–197 °C), with COP as the output variable. The results demonstrated that the FFBP-ANN model exhibited superior predictive accuracy compared to the ANFIS model, achieving R2 = 0.9999, MSE = 0.00010, MAE = 0.00804, and RMSE = 0.01000, whereas the ANFIS approach resulted in R2 = 0.9863, MSE = 0.00019, MAE = 0.01114, and RMSE = 0.01392. The optimal ANN topology was 4–23-16–1 with tansig–logsig–purelin activation functions. In contrast, the best membership functions selected for ANFIS were Gaussian for the input layer and constant for the output layer.
  • Miniatura
    Publicación
    Analysis of internal heat recovery capability in air-cooled indirect fired GAX-based absorption chiller in part-load operation
    (Elsevier, 2024-02-15) Palacios Lorenzo, María Esther; Marcos del Cano, José Daniel
    Single-effect absorption chillers are the most popular because of their low cost, despite their low COP. Among them, GAX-based AirCooled absorption chillers are very interesting because they have improved COP because of their ability to recover internal heat at low thermal lifts. This workshop analysed the ability of these types of chillers to recover internal heat at high thermal lifts by changing the pressure drop of an extra valve, a feature of the Robur absorption chiller when operating in subzero applications. The complete differential mathematical model analyses the components involved in heat supply and recovery and provides information on their operation. A thorough assessment of exergy destruction in the absorption refrigeration system was carried out. The main results show that when the chiller is driven at a temperature of 210 °C and an ambient temperature of 40 °C, a rise in the pressure drop of the additional valve, ΔPval1, from 175 to 700 kPa causes the extension of the vapour purification process to be reduced by 13.7% in the column of distillation and by 70.6% in the rectifier. Despite the adverse effect of ΔPval1 increase on the cooling capacity, there is no risk that the distillation column operates in weeping mode. However, this adjustment increases the internal thermal load of the generator by 26.9%. Furthermore, the mass fraction of the refrigerant flow is very similar. In addition, the occurrence of a two-phase solution flow at the input of a solution cooling absorber is the practical upper limit of ΔPval1. The refrigerant flow in the solution cooling absorber is reduced by 21.3%. Finally, the contribution of the heat recovery loop to the total exergy destruction in the refrigeration system rises slightly by 2.7% when ΔPval1 increases due to the contribution of the vapour purification system, which increases at the expense of that of the re-boiler and the SolutionCooled absorber. The results of this study show to what extent the modified GAX-based cycle can function effectively at high thermal lifts.
  • Miniatura
    Publicación
    Decarbonizing European industry: a novel technology to heat supply using waste and renewable energy
    (MDPI, 2024-10-06) Marcos del Cano, José Daniel; Golpour, Iman; Barbero Fresno, Rubén; Rovira de Antonio, Antonio José; Comisión Europea
    This study examines the potential for the smart integration of waste and renewable energy sources to supply industrial heat at temperatures between 150 °C and 250 °C, aiming to decarbonize heat demand in European industry. This work is part of a European project (SUSHEAT) which focuses on developing a novel technology that integrates several innovative components: a Stirling cycle high-temperature heat pump (HTHP), a bio-inspired phase change material (PCM) thermal energy storage (TES) system, and a control and integration twin (CIT) system based on smart decision-making algorithms. The objective is to develop highly efficient industrial heat upgrading systems for industrial applications using renewable energy sources and waste heat recovery. To achieve this, the specific heat requirements of different European industries were analyzed. The findings indicate that industrial sectors such as food and beverages, plastics, desalination, textiles, ceramics, pulp and paper, wood products, canned food, agricultural products, mining, and chemicals, typically require process heat at temperatures below 250 °C under conditions well within the range of the SUSHEAT system. Moreover, two case studies, namely the Pelagia and Mandrekas companies, were conducted to validate the effectiveness of the system. An analysis of the annual European heat demand by sector and temperature demonstrated that the theoretical potential heat demand that could be met by the SUSHEAT system is 134.92 TWh annually. Furthermore, an environmental impact assessment estimated an annual significant reduction of 19.40 million tonnes of CO2 emissions. These findings underscore the significant potential of the SUSHEAT system to contribute to the decarbonization of European industry by efficiently meeting heat demand and substantially reducing carbon emissions.
  • Miniatura
    Publicación
    A solar air-cooled high efficiency absorption system in dry hot climates: Reduction of water consumption and environmental impact
    (VINČA Institute of Nuclear Sciences, 2018) Lizarte, Raquel; Palacios Lorenzo, María Esther; Blanco Marigorta, Ana María; Marcos del Cano, José Daniel; Varela Díez, Fernando
    A solar cooling system with an optimized air-cooled double-effect water/LiBr absorption machine is proposed as a sustainable alternative to meet cooling demands in dry hot climates. This system allows eliminating the cooling towers in those regions of the planet where water is scarce. This work analyses the environmental benefits of this air-cooled system, as well as its environmental foot-prints, compared to a solar water-cooled single effect. In this regard, a methodology has been applied to calculate the annual saving in water consumption produced in a case study: a hospital located in Almería, in South of Spain. Further-more, the reduction in energy consumption and CO2 emissions is also quantified since this machine can be driven by solar energy and with higher efficiency than those of single effect.
  • Miniatura
    Publicación
    Exergetic sustainability assessment of a semi-industrial convective dryer employing waste heat recovery for drying wood chips: A BPANN-based approach
    (Elsevier, 2026-01-12) Zohrabi, Saman; Sadegh Seiiedlou, Seyed; Golpour, Iman; Mellmann, Jochen; Sturm,Barbara; Marcos del Cano, José Daniel; Blanco-Marigorta, Ana M.; Didaran, Fardad; Lefsrud, Mark
    This study investigates the exergy-based performance and sustainability of a semi-industrial convective dryer equipped with a waste heat recovery unit for drying poplar wood chips. Four key exergy-related indicators, namely exergetic improvement potential (EIP), exergetic sustainability index (ESI), universal exergetic efficiency (UEE), and overall exergetic efficiency (OEE) were examined and then predicted using a feedforward backpropagation multilayer perceptron neural network (FFBP-MLPNN) with the Levenberg-Marquardt (LM) learning algorithm and a single hidden layer. The network evaluated different numbers of neurons in the hidden layer and utilized tansig and purelin activation functions in the hidden and output layers, respectively. Experimental trials demonstrated that increasing the air recirculation ratio enhances the ESI due to improved heat recovery and reduced exergy losses, while it reduces the EIP, indicating lower thermodynamic inefficiencies and less potential for further improvement. In contrast, lower recirculation ratios yielded lower ESI values and higher EIP, highlighting greater exergy destruction and larger optimization potential. Additionally, increased air temperatures and flow rates improved both indices. The results indicated that the neural network can predict all four outcomes with R2 > 0.97. Additionally, 0.013601 (using a 4–23–1 topology), 6.4137 × 10−6 (4–15–1 topology), 3.186 × 10−6 (4–30–1 topology), and 0.036108 (4–32–1 topology) were the mean squared error (MSE) values for predicting the EIP, ESI, UEE, and OEE, respectively. Hence, this study suggests that the ANNs approach could be an effective tool for analyzing thermal sustainability indicators in industrial convective drying processes.
  • Miniatura
    Publicación
    Downsizing strategy for an air-cooled indirect-fired single-effect ammonia-water absorption chiller in part-load operation in hot climates
    (Elsevier, 2024) Palacios Lorenzo, María Esther; Marcos del Cano, José Daniel
    A modular mathematical model has been created to simulate an ammonia-water absorption refrigeration system indirectly fired and air-cooled. The model includes governing equations based on mass, species, and energy balances, implemented for the main components of the system. It accounts for both thermal and mass resistances in the transfer processes that occur in the system. The study evaluates the performance of the ROBUR® absorption refrigeration system, model ACF60-00 LB, operating under part-load conditions, driven by hot water temperatures ranging between 160 and 210 °C, while the ambient temperature remains up to 40 °C. This refrigeration system is characterised by including an extra valve that allows active control of the pressure levels of the system. The analysis focusses on the effect of its active control on the size of the system. The results show that increasing the pressure loss in this valve reduces the size of the air-cooled absorber to 37.3 % of its nominal size at an ambient temperature of 40 °C, while the reduction in refrigerant mass flow is 18.5 %, while the condenser size decreases 3.1 times. Evaporator, air-cooled absorber and condenser effectiveness are minimally affected. Additionally, contribution of condenser and evaporator to exergy destruction is balanced.
  • Miniatura
    Publicación
    Thermodynamic analysis and systematic comparison of solar-heated trigeneration systems based on ORC and absorption heat-pump
    (MDPI, 2021-08-01) García Domínguez, Jesús; Marcos del Cano, José Daniel
    Modular and scalable distributed generation solutions as combined cooling, heating and power (CCHP) systems are currently a promising solution for the simultaneous generation of electricity and useful heating and cooling for large buildings or industries. In the present work, a solar-heated trigeneration approach based on different organic Rankine cycle (ORC) layouts and a single-effect H2O/LiBr absorption heat pump integrated as a bottoming cycle is analysed from the thermodynamic viewpoint. The main objective of the study is to provide a comprehensive guide for selecting the most suitable CCHP configuration for a solar-heated CCHP system, following a systematic investigation approach. Six alternative CCHP configurations based on single-pressure and dual-pressure ORC layouts, such as simple, recuperated and superheated cycles, and their combinations, and seven organic fluids as working medium are proposed and compared systematically. A field of solar parabolic trough collectors (SPTCs) used as a heat source of the ORC layouts and the absorption heat pump are kept invariant. A comprehensive parametric analysis of the different proposed configurations is carried out for different design operating conditions. Several output parameters, such as energy and exergy efficiency, net electrical power and electrical to heating and cooling ratios are examined. The study reveals that the most efficient CCHP configuration is the single-pressure ORC regenerative recuperated superheated cycle with toluene as a working fluid, which is on average 25% and 8% more efficient than the variants with single-pressure simple cycle and the dual-pressure recuperated superheated cycle, respectively. At nominal design conditions, the best performing CCHP variant presents 163.7% energy efficiency and 12.3% exergy efficiency, while the electricity, cooling and heating productions are 56.2 kW, 223.0 kW and 530.1 kW, respectively