Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade

Heinz-Axel Guo

doi:doi:10.11648/j.ijmea.20231101.12

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Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade

Heinz-Axel Guo

Published in International Journal of Mechanical Engineering and Applications (Volume 11, Issue 1)

Received: 8 January 2023 Accepted: 4 February 2023 Published: 24 February 2023

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Abstract

The final effect of a thermal activated façade (TAF) wouldn’t only be influenced by the thermal character of the wall, dimensions and distance of the embedded pipes besides flow rate and temperature of the medium, but also by the location of the pipes. The location of the embedded pipes not only affects the final effect of thermoactivated, there is at the same time an obvious correspondence with the temperature of the medium. The simulations and lab investigations have concluded that the optimization the depth of embedded pipes, is necessary in order to use low-grade natural thermal energy/waste heat (LGTE) to achieve TAF. Using the bench mark of the “equivalent thermal resistance” (ER-Value), it is clear that the closer the pipes are located to the outside, the less energy grade is required. However, not all of the LGTE with higher temperature than outdoor air can be used for TAF. The limit of LGTE is the “Invalid Medium Temperature” (IVMT); although there is still a temperature difference between the medium and the outdoor environment, its thermal driving potential is not enough to form an effective heat transfer between the pipe and its surrounding per unit length, so that the medium circulation in the wall hardly contributes to changing the temperature gradient in the wall.

Published in	International Journal of Mechanical Engineering and Applications (Volume 11, Issue 1)
DOI	10.11648/j.ijmea.20231101.12
Page(s)	9-25
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Thermoactivated Façade/Envelop/Wall (TAF), Low-Grade Thermal Energy (LGTE), Equivalent Thermal Resistance (ER-Value), Invalid Medium/Water Temperature (IVMT), Ideal Medium/Water Temperature (IDMT)

References

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[7]	SHEN C, LI X, YAN S. Numerical study on energy efficiency and economy of a pipe-embedded glass envelope di-rectly utilizing ground-source water for heating in diverse climates [J]. Energy Conversion and Management, 2017, 150: 878–889. DOI: 10.1016/j.enconman.2017.04.063.
[8]	ZHU QIU YUAN, XU XIN HUA, PU ZAI YUAN. Study on Energy Efficiency of Pipe-embedded Building Envelopes [J]. Building Science, 2011, 12.
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[12]	LI A, XU X, SUN Y. A study on pipe-embedded wall integrated with ground source-coupled heat ex-changer for enhanced building energy efficiency in diverse climate regions [J]. Energy and Buildings, 2016, 121: 139–151. DOI: 10.1016/j.enbuild.2016.04.005.
[13]	ZHANG ZHI GANG, DUAN CAI XIA. HEAT TRANSFER OPTIMIZATION OF WALL IMPLANTED WITH HEAT PIPES [J]. Acta Energiae Solaris Sinica, 2016, 4.
[14]	ZHANG ZHI GANG, SHI YA PENG, SUN QING. Analysis on Energy Saving Potential of the Wall Implanted with Heat Pipes in Summer [J]. Journal of Tianjin Chengjian University, 2017, 12.
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[16]	Zhuang Z, Guo W, Ye H, et al. Thermal Performance of Building under Two Ideal Heating Patterns [J]. Procedia Engineering, 2017, 205: 3615–3622. DOI: 10.1016/j.proeng.2017.10.213.

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APA Style

Heinz-Axel Guo. (2023). Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade. International Journal of Mechanical Engineering and Applications, 11(1), 9-25. https://doi.org/10.11648/j.ijmea.20231101.12

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ACS Style

Heinz-Axel Guo. Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade. Int. J. Mech. Eng. Appl. 2023, 11(1), 9-25. doi: 10.11648/j.ijmea.20231101.12

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AMA Style

Heinz-Axel Guo. Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade. Int J Mech Eng Appl. 2023;11(1):9-25. doi: 10.11648/j.ijmea.20231101.12

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@article{10.11648/j.ijmea.20231101.12,
  author = {Heinz-Axel Guo},
  title = {Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {11},
  number = {1},
  pages = {9-25},
  doi = {10.11648/j.ijmea.20231101.12},
  url = {https://doi.org/10.11648/j.ijmea.20231101.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20231101.12},
  abstract = {The final effect of a thermal activated façade (TAF) wouldn’t only be influenced by the thermal character of the wall, dimensions and distance of the embedded pipes besides flow rate and temperature of the medium, but also by the location of the pipes. The location of the embedded pipes not only affects the final effect of thermoactivated, there is at the same time an obvious correspondence with the temperature of the medium. The simulations and lab investigations have concluded that the optimization the depth of embedded pipes, is necessary in order to use low-grade natural thermal energy/waste heat (LGTE) to achieve TAF. Using the bench mark of the “equivalent thermal resistance” (ER-Value), it is clear that the closer the pipes are located to the outside, the less energy grade is required. However, not all of the LGTE with higher temperature than outdoor air can be used for TAF. The limit of LGTE is the “Invalid Medium Temperature” (IVMT); although there is still a temperature difference between the medium and the outdoor environment, its thermal driving potential is not enough to form an effective heat transfer between the pipe and its surrounding per unit length, so that the medium circulation in the wall hardly contributes to changing the temperature gradient in the wall.},
 year = {2023}
}

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TY  - JOUR
T1  - Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade
AU  - Heinz-Axel Guo
Y1  - 2023/02/24
PY  - 2023
N1  - https://doi.org/10.11648/j.ijmea.20231101.12
DO  - 10.11648/j.ijmea.20231101.12
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 9
EP  - 25
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20231101.12
AB  - The final effect of a thermal activated façade (TAF) wouldn’t only be influenced by the thermal character of the wall, dimensions and distance of the embedded pipes besides flow rate and temperature of the medium, but also by the location of the pipes. The location of the embedded pipes not only affects the final effect of thermoactivated, there is at the same time an obvious correspondence with the temperature of the medium. The simulations and lab investigations have concluded that the optimization the depth of embedded pipes, is necessary in order to use low-grade natural thermal energy/waste heat (LGTE) to achieve TAF. Using the bench mark of the “equivalent thermal resistance” (ER-Value), it is clear that the closer the pipes are located to the outside, the less energy grade is required. However, not all of the LGTE with higher temperature than outdoor air can be used for TAF. The limit of LGTE is the “Invalid Medium Temperature” (IVMT); although there is still a temperature difference between the medium and the outdoor environment, its thermal driving potential is not enough to form an effective heat transfer between the pipe and its surrounding per unit length, so that the medium circulation in the wall hardly contributes to changing the temperature gradient in the wall.
VL  - 11
IS  - 1
ER  -

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Author Information

Heinz-Axel Guo

Center for Cultural Studies on Science and Technology in China (CCST), Technical University Berlin, Berlin, Germany

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Plain Text BibTeX RIS

APA Style

Heinz-Axel Guo. (2023). Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade. International Journal of Mechanical Engineering and Applications, 11(1), 9-25. https://doi.org/10.11648/j.ijmea.20231101.12

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ACS Style

Heinz-Axel Guo. Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade. Int. J. Mech. Eng. Appl. 2023, 11(1), 9-25. doi: 10.11648/j.ijmea.20231101.12

Copy | Download

AMA Style

Heinz-Axel Guo. Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade. Int J Mech Eng Appl. 2023;11(1):9-25. doi: 10.11648/j.ijmea.20231101.12

Copy | Download

@article{10.11648/j.ijmea.20231101.12,
  author = {Heinz-Axel Guo},
  title = {Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {11},
  number = {1},
  pages = {9-25},
  doi = {10.11648/j.ijmea.20231101.12},
  url = {https://doi.org/10.11648/j.ijmea.20231101.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20231101.12},
  abstract = {The final effect of a thermal activated façade (TAF) wouldn’t only be influenced by the thermal character of the wall, dimensions and distance of the embedded pipes besides flow rate and temperature of the medium, but also by the location of the pipes. The location of the embedded pipes not only affects the final effect of thermoactivated, there is at the same time an obvious correspondence with the temperature of the medium. The simulations and lab investigations have concluded that the optimization the depth of embedded pipes, is necessary in order to use low-grade natural thermal energy/waste heat (LGTE) to achieve TAF. Using the bench mark of the “equivalent thermal resistance” (ER-Value), it is clear that the closer the pipes are located to the outside, the less energy grade is required. However, not all of the LGTE with higher temperature than outdoor air can be used for TAF. The limit of LGTE is the “Invalid Medium Temperature” (IVMT); although there is still a temperature difference between the medium and the outdoor environment, its thermal driving potential is not enough to form an effective heat transfer between the pipe and its surrounding per unit length, so that the medium circulation in the wall hardly contributes to changing the temperature gradient in the wall.},
 year = {2023}
}

Copy | Download

TY  - JOUR
T1  - Optimize the Location of Embedded Pipes by Using Low-Grade Natural Thermal Energy/Waste Heat for Thermal Activated Façade
AU  - Heinz-Axel Guo
Y1  - 2023/02/24
PY  - 2023
N1  - https://doi.org/10.11648/j.ijmea.20231101.12
DO  - 10.11648/j.ijmea.20231101.12
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 9
EP  - 25
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20231101.12
AB  - The final effect of a thermal activated façade (TAF) wouldn’t only be influenced by the thermal character of the wall, dimensions and distance of the embedded pipes besides flow rate and temperature of the medium, but also by the location of the pipes. The location of the embedded pipes not only affects the final effect of thermoactivated, there is at the same time an obvious correspondence with the temperature of the medium. The simulations and lab investigations have concluded that the optimization the depth of embedded pipes, is necessary in order to use low-grade natural thermal energy/waste heat (LGTE) to achieve TAF. Using the bench mark of the “equivalent thermal resistance” (ER-Value), it is clear that the closer the pipes are located to the outside, the less energy grade is required. However, not all of the LGTE with higher temperature than outdoor air can be used for TAF. The limit of LGTE is the “Invalid Medium Temperature” (IVMT); although there is still a temperature difference between the medium and the outdoor environment, its thermal driving potential is not enough to form an effective heat transfer between the pipe and its surrounding per unit length, so that the medium circulation in the wall hardly contributes to changing the temperature gradient in the wall.
VL  - 11
IS  - 1
ER  -

Copy | Download