Simulation of thermoelectric heat pumps in nearly zero energy buildings: Why do all models seem to be right?

Martínez, Álvaro; Garayo, Sergio Díaz de; Aranguren, Patricia; Araiz, Miguel; Catalán, Leyre

doi:10.1016/j.enconman.2021.113992

Cited by 18 publications

(6 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…More specifically, it is important to calculate the number of modules that provides a sufficient heating and cooling capacity with the highest performance. To this aim, one computational model has been developed in EES (Engineering Equations Solver) [12], which is validated with the previously obtained experimental results. The thermal resistance of heat pipes is directly based on experimental measured data and is integrated in the computational model with a Lookup table.…”

Section: Parametric Studymentioning

confidence: 95%

Next generation of heat pumps for buildings based on thermoelectricity integrated with smart grids

Díaz de Garayo,

Ciria,

Fernández

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This paper proposes a HVAC system that integrates a novel thermoelectric heat pump with a double flux ventilation system and a sensible heat recovery unit able to provide heating, cooling and ventilation to a 74.3m2 pilot passive house in Pamplona (Spain). The heat pump has been previously prototyped and analysed in the laboratory, showing COPs ranging 1.5-4 for heating and 0.5-2 for cooling. This study investigates the energy performance of the combined system (heat pump and ventilation unit) and the comfort conditions of the dwelling one year long, showing the advantages of this technology and the potential integration with PV based building-level smart-grids.

show abstract

Section: Parametric Studymentioning

confidence: 95%

Next generation of heat pumps for buildings based on thermoelectricity integrated with smart grids

Díaz de Garayo,

Ciria,

Fernández

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…The thermal conductivity of the material and the temperature differential together determine the amount of heat transferred [27]. Secondly, when an electric current flows through semiconductors, a phenomenon known as Joule heat generation occurs due to electrical resistance R. This Joule heat, which is proportional to the square of the electric current, is produced equally at the cold and hot sides of the thermoelectric device and ultimately becomes the decisive factor [28]. The joule of heat finally takes over as the determining factor since it depends on electrical resistance and is proportional to the square of the electric current.…”

Section: Thermoelectric Refrigerationmentioning

confidence: 99%

Thermoelectric-Driven Room Air Cooling via a Multi-U Shaped Heat Sink System

Ali,

Reda,

Hussein

et al. 2023

IJHT

View full text Add to dashboard Cite

The compact sizing and lightweight characteristics of thermoelectric devices have garnered significant attention, leading to their widespread use across varied fields. This study experimentally investigates the application of thermoelectric refrigeration in air conditioning, employing a moderately designed system. A unique, multi-U shaped heat sink system was developed, wherein thermoelectric devices were affixed onto rectangular tubes befitting their dimensions, thereby facilitating water as an auxiliary medium for energy transfer. This design enabled the transformation of cold water from the system's cold side to the indoor unit's water-air heat exchanger, while hot water was directed to the outdoor evaporative cooling tank. A Peltier-type thermoelectric device was harnessed for this experiment. The devised setup was subjected to multiple tests to evaluate its thermal performance under the climate conditions of Najaf. Preliminary results validated the effectiveness of the water cooling methodology, with the water temperature observed to decrease to 14℃. Consequently, the room air was cooled by the water-air heat exchanger, reaching temperatures between 20℃ and 24℃. This study underscores the potential of integrating thermoelectric devices with innovative heat sink designs for efficient room air cooling.

show abstract

“…Thermoelectricity could become one of these alternative technologies. Heat pumps operating on the Peltier effect are promising for converting low-potential energy of the earth and water sources for heating and air conditioning buildings [1][2][3]. Thermoelectric generators (TEG) are used wherever reliable power sources are required with a long service life and do not require maintenance.…”

Section: Introductionmentioning

confidence: 99%

Multi-section thermoelements, advantages and problems of their creation

M.Yu.

2022

Semiconductors

View full text Add to dashboard Cite

In this work, the ways of increasing the efficiency of thermoelectric generators are considered. These include an increase in the figure of merit of thermoelectric materials, as well as an increase in the temperature difference between hot and cold junctions of thermoelements and, accordingly, the range of their operating temperatures. The expediency of using thermoelements with multi-section legs has been substantiated. For their creation, effective thermoelectric materials with operating temperatures in the range of 300-1200 K have been proposed. A technique for modeling such thermoelements has been developed. Structures and materials of effective contact systems for multi-section thermoelements have been proposed, a technology for their manufacture has been developed. Ways of switching sections in thermoelement legs are considered. The thermal expansion of thermoelectric materials is investigated and a method for damping thermal stresses in the design of a thermoelement is proposed. The problem of thermoelectric material sublimation at high temperatures was solved by using protective coatings. Key words: thermoelectric generators, multi-section thermoelements, thermoelectric materials, thermal and electrophysical properties, contact systems, protecting coatings.

show abstract

Simulation of thermoelectric heat pumps in nearly zero energy buildings: Why do all models seem to be right?

Cited by 18 publications

References 62 publications

Next generation of heat pumps for buildings based on thermoelectricity integrated with smart grids

Next generation of heat pumps for buildings based on thermoelectricity integrated with smart grids

Thermoelectric-Driven Room Air Cooling via a Multi-U Shaped Heat Sink System

Multi-section thermoelements, advantages and problems of their creation

Contact Info

Product

Resources

About