Mathematical Modeling and Experimental Study for Summer Performance of Earth Air Heat Exchanger Integrated with a Solar Greenhouse

Nayak, Santosh Kumar; Narwal, Kapil; Chaudhary, R.K.

doi:10.9790/2402-1009037586

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…In one such study, temeprature difference of 6.2 o C was obtained at a depth of 1.5 m with a length of 60 m 40 and, in another study, temeprature difference of 8.4 o C was obtained at a depth of 1.5 m with a length of 60 m 30 both conducted in Algeria. One more study has reported a temperature difference of 8 o C at a depth of 1 m with a length of 39 m 38 in India. However, the current study has reported temeprature difference of 9.4 o C at a depth of 2 m at Ferozepur, India.…”

Section: Resultsmentioning

confidence: 99%

“…Numerical modeling [20][21][22][23] and analytical modeling at different parametric values using different configurations have been done to a large extent. Most of the experiments have been performed with pipes laid in a straight line [24][25][26][27][28][29][30][31][32][33][34][35] and serpentine style [36][37][38][39] in both open mode 40 and closed mode 41 to study their usefulness. Large space requirement is a significant constraint for that.…”

Section: Introductionmentioning

confidence: 99%

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Experimental studies on natural bank type heating/cooling energy saving Air conditioning system

Goyal¹,

Asati²,

Rishabh³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The present study reports air-based novel energy saving compact bank type earth air heat exchanger system (EAHE) (having only 25m2 area) fabricated from Polyvinylchloride pipes of nominal diameter 0.203 mm (8 inches) for inlet and outlet headers and main pipes and 0.150 mm (6 inches nominal diameter) for branched pipes, which is installed in Shaheed Bhagat Singh State University, Ferozepur in Punjab state, India (North West border area of India) and studied for the duration from April to August 2021 using the full factorial design with four inlet variables at multilevel to find a model equation between inlet and outlet variables, i.e., heat exchanger effectiveness and achieved temperature difference. An induced airflow mode has been used to provide near-uniform flow through all corresponding pipes of symmetrical-shaped earth air heat exchangers. The values of Dry bulb temperature (DBT) and wet bulb temperature (WBT) have been measured for air inlet, for air outlet, as well as for ambient air using resistance temperature detectors (RTD) installed at the requisite locations. Earth's undisturbed temperature (EUT) was also noted by installing RTD at a depth of 2 m, and the average measured value of EUT is found to be 28.5°C. The current system has imparted the temperature difference variation from 0.4 oC to 9.4 oC, and the effectiveness varied from 0.16 to 0.82 during the whole season. This system could give a cooling potential of 0.0523 kJ/s to 1.587 kJ/s using a mass flow rate of 0.163 kg/s.Experiments have been designed methodically to apply the full factorial technique. Most favorable parameters have been found for hot and dry and hot and humid weather. The current study is novel in terms of significantly improving the effectiveness of EAHE and addressing the central issue of space limitation in urban areas.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental studies on natural bank type heating/cooling energy saving Air conditioning system

Goyal¹,

Asati²,

Rishabh³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…They concluded that there is a reduction in energy consumption using EAHE, where they found that for a typical house connected with an EAHE, the reduction of electricity consumption reaches 30%. Nayak et al presented a numerical and experimental study about the ability to use the stored thermal energy of the ground for space cooling during the summer season by using EAHE. The experiment was done for a greenhouse with a floor area of 6 m × 4 m and connected to an EAHE with 39 m pipe length and 0.06 m pipe diameter.…”

Section: Introductionmentioning

confidence: 99%

A study of the potential of using the Earth to air heat exchanger for cooling and heating of residential buildings in Iraq

Hasan

Noori

2019

Heat Trans. Asian Res.

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The Earth to air heat exchanger (EAHE) is an effective passive cooling and heating system for buildings. This paper studied numerically the potential for reduction in energy consumption for cooling and heating loads for a residence equipped with an EAHE system in the climate of Nasiriya city, which is located in southern Iraq and at 31.7°N and 45.8°E, latitude and longitude, respectively. Also, this paper presents a study about the thermal performance of three types of EAHE systems, system 1, consisting of one layer of EAHE and buried at an available area of house garden with 3-m depth, system 2, at the same site of system 1, but with two layers of EAHE at two depths, 3 and 4 m, and finally, system 3, buried along the area of the house at a depth of 3 m. First, the built numerical model was validated against experimental results, and the results of the comparison showed good agreement. The electricity consumption for cooling and heating of the house is calculated with and without the EAHE system. The results showed that with using EAHE, there is a considerable saving in energy and saving in the cost of electricity consumption, which reached 376 329 IQD ($301.11) over 1 year for system 2. K E Y W O R D S computational fluid dynamics, Earth to air heat exchanger system, energy saving, geothermal energy, numerical investigation, thermal performance F I G U R E 1 schematic of EAHE system coupled with the building. EAHE, Earth to air heat exchanger [Color figure can be viewed at wileyonlinelibrary.com] HASAN AND NOORI | 3903

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Enhancing the thermal performance of an agricultural solar greenhouse by geothermal energy using an earth-air heat exchanger system: A review

Dhaidan,

Al-Shohani,

Abbas

et al. 2024

Geothermics

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Mathematical Modeling and Experimental Study for Summer Performance of Earth Air Heat Exchanger Integrated with a Solar Greenhouse

Cited by 4 publications

References 10 publications

Experimental studies on natural bank type heating/cooling energy saving Air conditioning system

Experimental studies on natural bank type heating/cooling energy saving Air conditioning system

A study of the potential of using the Earth to air heat exchanger for cooling and heating of residential buildings in Iraq

Enhancing the thermal performance of an agricultural solar greenhouse by geothermal energy using an earth-air heat exchanger system: A review

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