Study on Calculation Models of Earth-Air Heat Exchanger Systems

Table 1

One-dimensional calculation models of EAHE systems.

Authors/type	Methodology	Comparison between experimental and simulation results	Reference
Santamouris et al. (1995), earth-to-air heat exchanger	A mathematical model based on the principle of balance point temperature within the TRNSYS environment	Sufficient accuracy observed	[37]
Mihalakakou et al. (1997), the variation of the ground surface temperature for bare and short-grass covered soil	A mathematical model based on heat conduction equations and on the energy balance at the ground surface	Very good agreement found	[38]
Kabashnikov et al. (2002), soil heat exchanger	Mathematical model in the form of Fourier integral	Close agreement observed	[36]
De Paepe and Janssens (2003), earth-air heat exchanger	One-dimensional analytical model	No such comparison available	[45]
Hollmuller (2003), cylindrical air/soil heat exchanger	Analytical solution with harmonic temperature signal at input	Good agreement against a finite-difference numerical simulation model and against an experimental setup	[28]
Pfafferott (2003), earth-to-air heat exchanger	Thermal efficiency characterization of EAHE by using parametric model and standardized graphs	No such comparison available	[17]
Ghosal et al. (2005), ground air collector and earth-air heat exchanger, integrated with the greenhouse	A complete numerical model was developed	Fair agreement observed	[25]
Al-Ajmi et al. (2006), earth-air heat exchanger	Theoretical model within the TRNSYS-IISIBAT environment	Good agreement showed	[26]
Sethi and Sharma (2007), aquifer coupled cavity flow heat exchanger system (ACCFHES)	Thermal model for heating and cooling of greenhouse solved within C^++ programming	Close agreement observed	[20]
Lee and Strand (2008), earth tubes	A new module was developed for and implemented in the EnergyPlus program	Good agreement with both theoretical and experimental data showed	[30]
Cucumo et al. (2008), earth-to-air heat exchanger	One-dimensional transient analytical model	A very satisfactory agreement observed	[46]
Ben Jmaa Derbel and Kanoun (2010), earth fluid pipe system	A mathematical model validated by measured ground temperatures	Good agreement showed	[39]
Sehli et al. (2012), earth-air heat exchanger	One-dimensional steady numerical model	Satisfactory agreement observed	[43]
Su et al. (2012), air-earth- (rock-) tunnel system	1D numerical simulating model	Max. error: temperature = 1.4°C; R. humidity = 10%	[42]
De Jesus Freire et al. (2013), compact buried pipes system	One-dimensional discrete model simulated within TRNSYS environment	Good accuracy observed	[47]
Ozgener et al. (2013), geothermal (ground) heat exchangers	One-dimensional transient heat flow model	Good accuracy observed	[41]