Listar Artículos de revista DING - INGS Aldizkari artikuluak por autor UPNA "Astrain Ulibarrena, David"
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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 ... -
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 ... -
Computer simulations of silicide-tetrahedrite thermoelectric generators
With global warming and rising energy demands, it is important now than ever to transit to renewable energy systems. Thermoelectric (TE) devices can present a feasible alternative to generate clean energy from waste heat. ... -
Corrosion behavior in volcanic soils: in search of candidate materials for thermoelectric devices
Thermoelectric generators have emerged as an excellent solution for the energy supply of volcanic monitoring stations due to their compactness and continuous power generation. Nevertheless, in order to become a completely ... -
Enhanced behaviour of a passive thermoelectric generator with phase change heat exchangers and radiative cooling
Heat exchangers are essential to optimize the efficiency of Thermoelectric Generators (TEGs), and heat pipes without fans have proven to be an advantageous design as it maintains the characteristic robustness of ... -
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 development of a novel thermoelectric generator without moving parts to harness shallow hot dry rock fields
Nowadays, geothermal energy in shallow hot dry rock fields is not exploited enough due to the high economic and environmental impact as well as the lack of scalability of the existing technologies. Here, thermoelectricity ... -
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 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 ... -
Heat pipes thermal performance for a reversible thermoelectric cooler-heat pump for a nZEB
The nZEB standards reduce the energy demand of these buildings to a minimum, obtaining this little energy from renewable resources. Taking these aspect into consideration, a thermoelectric cooler-heat pump is proposed to ... -
Improvements in the cooling capacity and the COP of a transcritical CO 2 refrigeration plant operating with a thermoelectric subcooling system
Restrictive environmental regulations are driving the use of CO 2 as working fluid in commercial vapour compression plants due to its ultra-low global warming potential (GWP 100 = 1) and its natural condition. However, at ... -
Influence of temperature and aging on the thermal contact resistance in thermoelectric devices
During thermal design in the first phases development, thermoelectric systems, such as thermoelectric generators, the most important parameter affecting the performance is thermal resistance of the components. This paper ... -
Performance assessment of an experimental CO2 transcritical refrigeration plant working with a thermoelectric subcooler in combination with an internal heat exchanger
Regulations in the refrigeration sector are forcing the transition to low global warming potential fluids such as carbon dioxide in order to decrease direct greenhouse gases emissions. Several technologies have arisen over ... -
Prospects of autonomous volcanic monitoring stations: experimental investigation on thermoelectric generation from fumaroles
Fumaroles represent evidence of volcanic activity, emitting steam and volcanic gases at temperatures between 70 and 100 °C. Due to the well-known advantages of thermoelectricity, such as reliability, reduced maintenance ... -
Prospects of waste-heat recovery from a real industry using thermoelectric generators: economic and power output analysis
One of the options to reduce industrial energy costs and the environmental impact is to recover the waste-heat produce in some processes. This paper proposes the use of thermoelectric generators at a stone wool manufacturing ... -
Thermoelectric heat recovery in a real industry: from laboratory optimization to reality
Thermoelectricity, in the form of thermoelectric generators, holds a great potential in waste heat recovery, this potential has been studied and proved in several laboratory and theoretical works. By the means of a ...