Un-stationary thermal analysis of the vertical ground heat exchanger within unsaturated soils

2020 ◽  
Vol 151 ◽  
pp. 805-815 ◽  
Author(s):  
Daniel Sławiński
Keyword(s):  
Thermal Analysis ◽  
Heat Exchanger ◽  
Unsaturated Soils ◽  
Ground Heat Exchanger ◽  
Vertical Ground

Thermal analysis of a triple helix ground heat exchanger using numerical simulation and multiple linear regression

Geothermics ◽  
2019 ◽  
Vol 81 ◽  
pp. 53-73 ◽  
Author(s):  
Hossein Javadi ◽  
Seyed Soheil Mousavi Ajarostaghi ◽  
Seyed Sina Mousavi ◽  
Mohsen Pourfallah
Keyword(s):  
Numerical Simulation ◽  
Thermal Analysis ◽  
Heat Exchanger ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Triple Helix ◽  
Ground Heat Exchanger

scholarly journals An Enhanced Vertical Ground Heat Exchanger Model for Whole-Building Energy Simulation

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4058
Author(s):  
Matt S. Mitchell ◽  
Jeffrey D. Spitler
Keyword(s):  
Heat Exchanger ◽  
Temperature Response ◽  
Building Energy ◽  
Energy Simulation ◽  
Building Energy Simulation ◽  
Response Factor ◽  
Fluid Temperature ◽  
Ground Heat Exchanger ◽  
Vertical Ground ◽  
Whole Building Energy Simulation

This paper presents an enhanced vertical ground heat exchanger (GHE) model for whole-building energy simulation (WBES). WBES programs generally have computational constraints that affect the development and implementation of component simulation sub-models. WBES programs require models that execute quickly and efficiently due to how the programs are utilized by design engineers. WBES programs also require models to be formulated so their performance can be determined from boundary conditions set by upstream components and environmental conditions. The GHE model developed during this work utilizes an existing response factor model and extends its capabilities to accurately and robustly simulate at timesteps that are shorter than the GHE transit time. This was accomplished by developing a simplified dynamic borehole model and then exercising that model to generate exiting fluid temperature response factors. This approach blends numerical and analytical modeling methods. The existing response factor models are then extended to incorporate the exiting fluid temperature response factor to provide a better estimate of the GHE exiting fluid temperature at short simulation timesteps.

F142 Evaluation for Thermal Analysis Model of Ground Heat Exchanger

2013 ◽  
Vol 2013 (0) ◽  
pp. 191-192
Author(s):  
Saburo Tanaka ◽  
Kosuke Ito ◽  
Naoe Sasaki ◽  
Masahito Oguma
Keyword(s):  
Thermal Analysis ◽  
Heat Exchanger ◽  
Ground Heat Exchanger ◽  
Analysis Model
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