Performance analysis of earth–pipe–air heat exchanger for winter heating

Bansal, Vikas; Misra, Rohit; Agrawal, Ghanshyam Das; Mathur, Jyotirmay

doi:10.1016/j.enbuild.2009.05.010

Cited by 167 publications

(64 citation statements)

References 9 publications

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“…High heat processes and radiant energy release from machinery decreases both the thermal comfort and increases the energy usage to maintain an optimal level of thermal comfort inside building, especially in hot climates. New technology that help with the reduction or suppression of air conditioning has been successfully demonstrated to achieve energy savings by using passive or low-energy techniques like Earth-to-Air Heat Exchanger (EAHE) and the solar chimneys (SC), by ventilating air to the indoor spaces, using the ground's potential thermal capacity [62][63][64]. Solar chimneys are reported to be very effective in hot climates with their high cooling capacities and in conjunction with natural ventilation they can help generate electricity [65][66][67].…”

Section: Factors Influencing Thermal Comfort Of Buildingmentioning

confidence: 99%

Role of building material in thermal comfort in tropical climates – A review

Latha

Darshana

Venugopal

2015

Journal of Building Engineering

142

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Section: Factors Influencing Thermal Comfort Of Buildingmentioning

confidence: 99%

Role of building material in thermal comfort in tropical climates – A review

Latha

Darshana

Venugopal

2015

Journal of Building Engineering

142

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“…A time lag also occurs between the temperature fluctuations at the surface and in the ground. Due to this, at a sufficient depth, the ground temperature is lower than the outside temperature in summer and higher in winter (Hepbasli, 2003;Bansal et al, 2009). …”

Section: Introductionmentioning

confidence: 97%

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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“…Thus, a closed-loop EAHE system may be more suitable for residential applications. With respect to this element of an EAHE system's applicability, the majority of EAHE studies for the last two decades have been conducted on open-loop EAHE systems, including experimental and theoretical studies [4,6,[10][11][12][13][14][15][16][17][18][19] of outdoor ventilation air with EAHE systems; conversely, there has been a lack of studies performed on closed-loop EAHE systems [20]. M a n u s c r i p t 3 This study aims to evaluate the potential benefits of using the closed-loop EAHE system, which is a return-air duct system coupled with an EAHE system, for cooling energy use in residential buildings in the hot and humid climate of Texas.…”

Section: Introductionmentioning

confidence: 99%