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José Mª Marín

Bio: José Mª Marín is an academic researcher from University of Zaragoza. The author has contributed to research in topics: Thermal energy storage & Heat transfer. The author has an hindex of 2, co-authored 4 publications receiving 3810 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a review of the history of thermal energy storage with solid-liquid phase change has been carried out and three aspects have been the focus of this review: materials, heat transfer and applications.

4,019 citations

Journal ArticleDOI
TL;DR: In this paper, a thermal energy storage (TES) using air as heat transfer medium, efficient mainly for free cooling but also for other applications, improving the low heat transfer rates dues to the thermal conductivity of the materials usually employed in these systems, phase change materials (PCM).

186 citations

Proceedings ArticleDOI
TL;DR: GLY demonstrated superiority of GLY compared to TIO in terms of FEV 1 AUC 0-4h after the first dose of treatment, further supporting better bronchodilation with GLY during the 4 h following administration.
Abstract: Background: Inhaled long-acting antimuscarinic agents are first line bronchodilator options for treatment of stable moderate-to-severe COPD patients (pts). In the GLOW2 trial glycopyrronium (GLY) demonstrated faster onset of action vs open-label tiotropium (TIO), with greater levels of bronchodilation in the initial 4 h following administration. Aim: To show superiority of GLY (50 μg) compared to TIO (18 μg)in FEV1AUC0-4h after first dose in symptomatic patients with moderate to severe COPD. Secondary efficacy objectives included comparisons of symptoms on Day 1 and 28. Methods: This was a prospective multi-centre, randomized, blinded, two-period cross-over study; each treatment lasted 28 days, with 14-19 days wash-out between treatments. Results: Of 124 pts randomized, 70.2% were male, mean age was 65.7 y. Least square means (95% CI) FEV1AUC0-4h after first treatment dose was 1.74 (1.71, 1.77)L for GLY and 1.71 (1.68, 1.74)L for TIO; difference 0.030 (0.004, 0.056)L, p=0.025, in favour of GLY. A numerical difference in improvement of morning COPD symptoms was observed in favour of GLY [mean (SD) -6.9 (6.6) vs -5.9 (6.6) for GLY and TIO respectively (p=0.144)]. GLY was also numerically better in FEV1AUC0-4h when compared to TIO on Day 28. The Day 28 PRO-morning COPD symptom score was not different between treatments. There were no differences in the safety profile between GLY and TIO. Conclusions: GLY demonstrated superiority of GLY compared to TIO in terms of FEV1AUC0-4h after the first dose of treatment, further supporting better bronchodilation with GLY during the 4 h following administration.

2 citations


Cited by
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Journal ArticleDOI
24 Jun 2011-Science
TL;DR: This work synthesized a porous carbon with a Brunauer-Emmett-Teller surface area, a high electrical conductivity, and a low oxygen and hydrogen content that has high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes.
Abstract: Supercapacitors, also called ultracapacitors or electrochemical capacitors, store electrical charge on high-surface-area conducting materials. Their widespread use is limited by their low energy storage density and relatively high effective series resistance. Using chemical activation of exfoliated graphite oxide, we synthesized a porous carbon with a Brunauer-Emmett-Teller surface area of up to 3100 square meters per gram, a high electrical conductivity, and a low oxygen and hydrogen content. This sp 2 -bonded carbon has a continuous three-dimensional network of highly curved, atom-thick walls that form primarily 0.6- to 5-nanometer-width pores. Two-electrode supercapacitor cells constructed with this carbon yielded high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes. The processes used to make this carbon are readily scalable to industrial levels.

5,486 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the phase change materials (PCM) and their application in energy storage is presented, where the main advantages of encapsulation are providing large heat transfer area, reduction of the PCMs reactivity towards the outside environment and controlling the changes in volume of the storage materials as phase change occurs.

2,636 citations

Journal ArticleDOI
TL;DR: In this paper, the phase change problem has been formulated using pure conduction approach but the problem has moved to a different level of complexity with added convection in the melt being accounted for, which makes it difficult for comparison to be made to assess the suitability of PCMs to particular applications.
Abstract: This paper reviews the development of latent heat thermal energy storage systems studied detailing various phase change materials (PCMs) investigated over the last three decades, the heat transfer and enhancement techniques employed in PCMs to effectively charge and discharge latent heat energy and the formulation of the phase change problem. It also examines the geometry and configurations of PCM containers and a series of numerical and experimental tests undertaken to assess the effects of parameters such as the inlet temperature and the mass flow rate of the heat transfer fluid (HTF). It is concluded that most of the phase change problems have been carried out at temperature ranges between 0 °C and 60 °C suitable for domestic heating applications. In terms of problem formulation, the common approach has been the use of enthalpy formulation. Heat transfer in the phase change problem was previously formulated using pure conduction approach but the problem has moved to a different level of complexity with added convection in the melt being accounted for. There is no standard method (such as British Standards or EU standards) developed to test for PCMs, making it difficult for comparison to be made to assess the suitability of PCMs to particular applications. A unified platform such as British Standards, EU standards needs to be developed to ensure same or similar procedure and analysis (performance curves) to allow comparison and knowledge gained from one test to be applied to another.

1,630 citations

Journal ArticleDOI
TL;DR: In this article, the authors summarized previous works on latent thermal energy storage in building applications, covering PCMs, the impregnation methods, current building applications and their thermal performance analyses, as well as numerical simulation of buildings with PCMs.

1,569 citations

Journal ArticleDOI
TL;DR: In this article, the different storage concepts are reviewed and classified, and modellization of such systems is reviewed, and all materials considered in literature or plants are listed. But only a few plants in the world have tested high temperature thermal energy storage systems.
Abstract: Concentrated solar thermal power generation is becoming a very attractive renewable energy production system among all the different renewable options, as it has have a better potential for dispatchability. This dispatchability is inevitably linked with an efficient and cost-effective thermal storage system. Thus, of all components, thermal storage is a key one. However, it is also one of the less developed. Only a few plants in the world have tested high temperature thermal energy storage systems. In this paper, the different storage concepts are reviewed and classified. All materials considered in literature or plants are listed. And finally, modellization of such systems is reviewed.

1,445 citations