Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology
This paper proposes an innovative system that integrates two thermoelectric heat pumps (one air–water and the other water–water) with two thermal storage tanks at different temperatures to provide heating and domestic hot water to a 73.3 m<sup>2</sup> passive-house-certified dwelling in...
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MDPI AG
2024-12-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/12/3988 |
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| author | Javier Ordóñez Sergio Díaz de Garayo Álvaro Martínez Fernando Algarra David Astrain |
| author_facet | Javier Ordóñez Sergio Díaz de Garayo Álvaro Martínez Fernando Algarra David Astrain |
| author_sort | Javier Ordóñez |
| collection | DOAJ |
| description | This paper proposes an innovative system that integrates two thermoelectric heat pumps (one air–water and the other water–water) with two thermal storage tanks at different temperatures to provide heating and domestic hot water to a 73.3 m<sup>2</sup> passive-house-certified dwelling in Pamplona (Spain). The air–water thermoelectric heat pump extracts heat from the ambient air and provides heat to a tank at intermediate temperature, which supplies water to a radiant floor. The water–water heat pump takes heat from this tank and provides heat to the other tank, at higher temperature, which supplies domestic hot water. The system performance and comfort conditions are computationally analyzed during the month of January under the climate of Pamplona and under different European climates. The COP of the system lays between 1.3 and 1.7, depending on the climate, because of the low COP of the air–water thermoelectric heat pump. However, it is able to provide water for the radiant floor and to maintain the temperature of the dwelling above 20 °C 99.8% of the time. Moreover, it provides domestic hot water at a temperature above 43 °C 99.9% of the time. Noteworthy is the fact that the water–water heat pump presents a COP close to 4, which opens up the possibilities of working in combination with more efficient heat pumps for the first stage. |
| format | Article |
| id | doaj-art-da5c64ff6d864ea48372e7a440eec8ce |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-da5c64ff6d864ea48372e7a440eec8ce2025-08-20T02:43:29ZengMDPI AGBuildings2075-53092024-12-011412398810.3390/buildings14123988Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric TechnologyJavier Ordóñez0Sergio Díaz de Garayo1Álvaro Martínez2Fernando Algarra3David Astrain4National Renewable Energy Centre, 31621 Sarriguren, SpainNational Renewable Energy Centre, 31621 Sarriguren, SpainEngineering Department, Public University of Navarre, 31006 Pamplona, SpainEngineering Department, Public University of Navarre, 31006 Pamplona, SpainEngineering Department, Public University of Navarre, 31006 Pamplona, SpainThis paper proposes an innovative system that integrates two thermoelectric heat pumps (one air–water and the other water–water) with two thermal storage tanks at different temperatures to provide heating and domestic hot water to a 73.3 m<sup>2</sup> passive-house-certified dwelling in Pamplona (Spain). The air–water thermoelectric heat pump extracts heat from the ambient air and provides heat to a tank at intermediate temperature, which supplies water to a radiant floor. The water–water heat pump takes heat from this tank and provides heat to the other tank, at higher temperature, which supplies domestic hot water. The system performance and comfort conditions are computationally analyzed during the month of January under the climate of Pamplona and under different European climates. The COP of the system lays between 1.3 and 1.7, depending on the climate, because of the low COP of the air–water thermoelectric heat pump. However, it is able to provide water for the radiant floor and to maintain the temperature of the dwelling above 20 °C 99.8% of the time. Moreover, it provides domestic hot water at a temperature above 43 °C 99.9% of the time. Noteworthy is the fact that the water–water heat pump presents a COP close to 4, which opens up the possibilities of working in combination with more efficient heat pumps for the first stage.https://www.mdpi.com/2075-5309/14/12/3988thermoelectricsheat pumpnZEBsimulationheatingDHW |
| spellingShingle | Javier Ordóñez Sergio Díaz de Garayo Álvaro Martínez Fernando Algarra David Astrain Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology Buildings thermoelectrics heat pump nZEB simulation heating DHW |
| title | Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology |
| title_full | Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology |
| title_fullStr | Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology |
| title_full_unstemmed | Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology |
| title_short | Design and Analysis of a Two-Stage Cascade System for Heating and Hot Water Production in Nearly Zero-Energy Buildings Using Thermoelectric Technology |
| title_sort | design and analysis of a two stage cascade system for heating and hot water production in nearly zero energy buildings using thermoelectric technology |
| topic | thermoelectrics heat pump nZEB simulation heating DHW |
| url | https://www.mdpi.com/2075-5309/14/12/3988 |
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