Thermal performance investigation of hybrid earth air tunnel heat exchanger

Misra, Rohit; Bansal, Vikas; Agarwal, Ghanshyam Das; Mathur, Jyotirmay; Aseri, Tarun Kumar

doi:10.1016/j.enbuild.2012.02.049

Cited by 62 publications

(11 citation statements)

References 12 publications

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“…Misra et al [41] made an experimental setup of EAHE system in hybrid with air conditioner (AC) at Ajmer in India. The experimental setup comprised of 60 m long, 0.10 m ID PVC pipe, buried at a depth of 3.7 m in a flat land with dry soil.…”

Section: Experimental Studies Of Eahe Systemsmentioning

confidence: 99%

Ground coupled heat exchangers: A review and applications

Soni

Pandey

Bartaria³

2015

Renewable and Sustainable Energy Reviews

153

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Section: Experimental Studies Of Eahe Systemsmentioning

confidence: 99%

Ground coupled heat exchangers: A review and applications

Soni

Pandey

Bartaria³

2015

Renewable and Sustainable Energy Reviews

153

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“…EAHE system can be constructed in all types of the building and regions. Several studies have been carried out to investigate different components of EAHE system, like computational simulations (Misra et al, 2012), numerical studies (Su et al, 2012), improvements and optimizations (Ghosal et al, 2005), real applications (Xiaa et al, 2012), economic and physic analysis ). The EAHE system increases the building internal temperature during the winter and reduces it during the summer due to this cooling system consume lower electrical energy to reach the thermal comfort of the building.…”

Section: Introductionmentioning

confidence: 99%

Design and performance evaluation of low cost Earth to air heat exchanger model suitable for small buildings in arid and semi arid regions

et al. 2014

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An experimental study was performed on a prototype model of Earth to Air Heat Exchanger System (EAHE) equipped with low cost material like PVC pipes and exhaust fans made on temporary platform. Emphasis was given on the design of the duct system suitable for small houses without any space in urban and rural areas. Tests were performed to predict the cooling potential and impact of the material on the performance of EAHE system. Experiment was performed continuously for more than three weeks and the result shows that irrespective to the inlet air temperature (ranges from 34 o C to 44 o C), outlet air temperature was recorded between 20 o C to 22 o C, which shows the effectiveness of the system. No significant affect of the material used for making the underground air pipe system was recorded on the performance of the model. The Minimum EER (W/W) ratio calculated for the prototype model was around 3.78, which is equivalent to a Energy Star 5 rating, the most efficient system. The weekly energy saving potential of the model before and after integration of EAHE was analyzed i.e., around 5 kWh/week and 20 kWh/week respectively. This considerable increase in weekly energy savings potential of model due to EAHE leads to mitigation of CO 2 emissions if implemented in the residential, commercial and industrial buildings and the corresponding annual carbon credit of these buildings can be decreased manifold. The Life Cycle Cost (LCC) analysis of model also shows that the payback period is around 3 to 4 years for the investment on EAHE system. After a series of experimental analysis the study also reveals that EAHE system is easily and economically feasible technique which can drastically reduce the consumption of energy in future and eliminate the need for conventional compressor based cooling systems.

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“…They do not either address the question of system integration, overall energy balance or comparative analysis with other passive heating or cooling systems. Neither do a few articles specifically related to experimental case studies (Eiker et al [34], Misra et al [35], Oliveira and Gonçalves [36]). …”

Section: Guidelines System Integration and Comparative Analysismentioning

confidence: 99%

Air–soil heat exchangers for heating and cooling of buildings: Design guidelines, potentials and constraints, system integration and global energy balance

Hollmuller

Lachal

2014

Applied Energy

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Air-soil heat exchangers for heating and cooling of buildings are analyzed under various aspects.Based on the analytically resolved case of a constant airflow subject to sinusoidal temperature input, we start by deriving climate independent design guidelines, for dampening of the daily and/or the yearly temperature oscillation. In a second step, constraints and potential of buried pipe systems are analyzed for the case of a typical Central European climate, for which the constraint between climate and comfort threshold induces a fundamental asymmetry between preheating and cooling potential. Finally, it is shown that the net yield of an air-soil heat exchanger has to take into account more than the mere input-output temperature differential. Keywordsair-soil heat exchanger, earth-air tunnel, buried pipe system, passive cooling and heating.

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Thermal performance investigation of hybrid earth air tunnel heat exchanger

Cited by 62 publications

References 12 publications

Ground coupled heat exchangers: A review and applications

Ground coupled heat exchangers: A review and applications

Design and performance evaluation of low cost Earth to air heat exchanger model suitable for small buildings in arid and semi arid regions

Air–soil heat exchangers for heating and cooling of buildings: Design guidelines, potentials and constraints, system integration and global energy balance

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