Listar por autor UPNA "Aranguren Garacochea, Patricia"
Mostrando ítems 1-20 de 35
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Advanced phase-change intermediate heat exchanger development for multistage thermoelectric heat pumps
The need to reach a full energy decarbonisation is well known. Heating and cooling consumption is almost half of the global energy end-use. Thus, development of low-carbon and highly efficient power-to-heat technologies ... -
Assessing the reliability of current simulation of thermoelectric heat pumps for nearly zero energy buildings: expected deviations and general guidelines
This paper makes evident that a rigorous review of simulation methods for thermoelectric heat pumps in nearly-zero energy buildings is needed, as incoherent results during verification and validation of simulation models ... -
Auxiliary consumption: a necessary energy that affects thermoelectric generation
Waste heat recovery can apply to a wide range of applications, from transportation, or industries to domestic appliances. Thermoelectric generation technology applied to those cases could produce electrical energy and thus ... -
Computational and experimental study of a complete heat dissipation system using water as heat carrier placed on a thermoelectric generator
The heat dissipation systems which have liquids as heat carriers outperform conventional dissipation systems at thermoelectric generators (TEGs). However, new elements need to be introduced such as pumps, secondary heat ... -
Computational study of geothermal thermoelectric generators with phase change heat exchangers
The use of thermoelectric generators with phase change heat exchangers has demonstrated to be an interesting and environmentally friendly alternative to enhanced geothermal systems (EGS) in shallow hot dry rock fields ... -
Design and experimental development of thermoelectric generators for shallow geothermal anomalies of volcanic origin
En el contexto energético actual, caracterizado por un incesante aumento en el consumo de energía y una gran dependencia de los combustibles fósiles, resulta imprescindible apostar por sistemas eficientes y basados en ... -
Development and experimental validation of a thermoelectric test bench for laboratory lessons
The refrigeration process reduces the temperature of a space or a given volume while the power generation process employs a source of thermal energy to generate electrical power. Because of the importance of these two ... -
Effect of dietary quercetin and sphingomyelin on intestinal nutrient absorption and animal growth
Research on cancer and other conditions has shown flavonoids and sphingolipids to be food components capable of exerting chemoprotective action. Nevertheless, little is known about their effects on healthy individuals and ... -
Energía sostenible: sin malos humos
¿Puede España ser sostenible energéticamente? Si alguna vez te has planteado esta pregunta, o quieres saber en qué gastamos la energía y de dónde podría ser obtenida, aquí encontrarás respuestas. Nuestros recursos ... -
Estudio y optimización de los sistemas de intercambio de calor en generación termoeléctrica aplicada al aprovechamiento del calor residual
La presente tesis doctoral estudia el aprovechamiento del calor residual mediante generación termoeléctrica para la obtención de potencia eléctrica generada gracias al efecto Seebeck. Dos son las aproximaciones empleadas, ... -
Experimental analysis of one and two-stage thermoelectric heat pumps to enhance the performance of a thermal energy storage
This experimental study demonstrates the possibility to enhance the performance of a low-temperature thermal energy storage system (~160 ¿C) based on airflow heating using electrical heaters by including thermoelectric ... -
Experimental and computational study on thermoelectric generators using thermosyphons with phase change as heat exchangers
An important issue in thermoelectric generators is the thermal design of the heat exchangers since it can improve their performance by increasing the heat absorbed or dissipated by the thermoelectric modules. Due to its ... -
Experimental enhancement of a CO2 transcritical refrigerating plant including thermoelectric subcooling
CO2 is an excellent natural refrigerant that can be used in almost any commercial cooling application thanks to its useful range of evaporative temperatures and excellent environmental properties. However, due to its low ... -
Experimental evaluation of a transcritical CO2 refrigeration facility working with an internal heat exchanger and a thermoelectric subcooler: performance assessment and comparative
The use of carbon dioxide in transcritical state has become one of the most used solutions to comply with the F-Gas directive and reduce greenhouse gases emissions from refrigeration systems at high ambient temperatures. ... -
Experimental evidence of the viability of thermoelectric generators to power volcanic monitoring stations
Although there is an important lack of commercial thermoelectric applications mainly due to their low efficiency, there exist some cases in which thermoelectric generators are the best option thanks to their well-known ... -
Experimental investigation of the applicability of a thermoelectric generator to recover waste heat from a combustion chamber
A thermoelectric generator prototype has been built; it produces 21.56 W of net power, the produced thermoelectric power minus the consumption of the auxiliary equipment, using an area of 0.25 m2 (approximately 100 W/m2). ... -
Experimental study and optimization of thermoelectric-driven autonomous sensors for the chimney of a biomass power plant
In the work discussed in this paper a thermoelectric generator was developed to harness waste heat from the exhaust gas of a boiler in a biomass power plant and thus generate electric power to operate a flowmeter installed ... -
Experimental study of a multistage thermoelectric heat pump using different internal heat exchangers
The current need to carry out an energy transition towards a 100 % renewable horizon places the energy storage as the key. Thermal energy storage has the potential to be an optimal technology. Nowadays electrical resistors ... -
Experimental validation and development of an advanced computational model of a transcritical carbon dioxide vapour compression cycle with a thermoelectric subcooling system
The inclusion of a thermoelectric subcooler as an alternative to increment the performance of a vapour compression cycle has been proved promising when properly designed and operated for low-medium power units. In this ... -
Gamification and a low-cost laboratory equipment aimed to boost vapor compresion refrigeration learning
The nowadays European educational framework boosts applying the learned theoretical concepts to real situations. Hence, practice sessions are key resources to present students direct applications of the theoretical concepts ...