Field performance of an energy pile system for space heating

Hamada, Yusuke; Saitoh, Hisatoshi; Nakamura, Makoto; Kubota, Hideki; Ochifuji, Kiyoshi

doi:10.1016/j.enbuild.2006.09.006

Cited by 257 publications

(77 citation statements)

References 14 publications

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“…Hamada et al (2007) described theˆeld performance of an energy pile system consisting of a total of 26 concrete friction piles of a depth of 9 m and an outer diameter of 302 mm. They, monitored the piles for six months with respect to the thermo-dynamics aspects and cooling and heating performance of the system.…”

Section: Use Of Natural Energymentioning

confidence: 99%

Foundations

Kusakabe

Kobayashi

2010

Soils and Foundations

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Foundation engineering emerged as a discipline of modern engineering science in 1940s.Design and analysis as well as practice of foundation engineering have made a signiˆcant progress up to the present time.This paper gives an overview of the development of foundation engineering, mainly referring to papers published in Soils and Foundations.The paper describes the theoretical development of foundation analysis and a recent increasing trend of foundation practice of adopting various hybrid foundations.The paper points out the importance of environmental considerations in foundation design and practice, including low noise and vibration reduction, reuse of existing foundations and use of natural energy through foundation elements.The paper then provides authors'views of future directions in foundation studies and practice.

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Section: Use Of Natural Energymentioning

confidence: 99%

Foundations

Kusakabe

Kobayashi

2010

Soils and Foundations

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“…However, the high installation and drilling cost restrict the application of borehole GHE, especially for rocky areas. Therefore, energy piles [1] have been proposed and widely applied for its good economic and well-heated transfer performance. The primary structure forms of energy piles consisting of U type [2][3][4] (such as single U type, parallel double U type, triple U type and series U type) and helix type [5][6][7] and the helix energy piles (HEPs) are promising GHEs due to the characteristics of large heat exchange rate and no air choking in the pipes.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer of Helix Energy Pile: Part 1: Traditional Cylinder Helix Energy Pile

Huang¹,

Liu²,

Yang³

et al. 2018

Heat Transfer - Models, Methods and Applications

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Helix energy pile (HEP) is a new popular ground heat exchanger that has the advantages of large heat exchange rate and low initial cost. As for the traditional helix energy pile, the tube is wound on the cylindrical wall, which is called the cylinder helix energy pile (CyHEP). Further, both analytical solution model and numerical solution model for CyHEP are built to discuss the dynamic characteristics of thermal interferences and heat transfer performance. The results indicate that four heat exchange stages for the spiral pile geothermal heat exchanger along the fluid flow direction are revealed: inlet heat exchange stage, grout thermal short-circuiting stage, small temperature difference stage and outlet heat exchange stage. Each stage has corresponding heat transfer characteristics, and reducing the length of small temperature difference stage and increasing the other stages would enhance the heat exchange of spiral geothermal ground heat exchanger. As the pile diameter increases, the heat transfer per unit tube length decreases, and the heat exchange per unit pile depth increases. As the pile depth increases, the heat transfer per unit tube length and the heat exchange per unit pile depth are reduced. And as the pitch increases, the heat transfer per unit tube length increases, and the heat exchange per unit pile depth decreases.

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“…Low-temperature radiant floor heating system is a system which makes use of the building ground to heat [2][3][4]. In the system, whole ground is used as a heat sink, and low temperature hot water is used as heat source.…”

Section: Introductionmentioning

confidence: 99%

Research on Control Property of Low-temperature Floor Radiant Heating System

Yang¹

2015

TOBCTJ

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A new energy-efficient and comfortable heating system, low-temperature floor radiant heating system of floor radiation is increasingly applied to a wide range of housing construction. In the paper, establishing the model of radiant floor heating systems, the effect of outdoor temperature, enclosure structures and heating storage characteristics that influence the indoor air temperature and the enclosure temperature, have been analyzed. The fuzzy-PID controller is chosen as the control radiant floor heating system. Several control strategies such as air-based control, slab-based control, and twoparameter control have been compared. Two-parameter control based on the floor surface temperature and the indoor air temperature is very stable, with high initial investment.

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Field performance of an energy pile system for space heating

Cited by 257 publications

References 14 publications

Foundations

Foundations

Heat Transfer of Helix Energy Pile: Part 1: Traditional Cylinder Helix Energy Pile

Research on Control Property of Low-temperature Floor Radiant Heating System

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