Influence of parameters on performance of earth air heat exchanger in hot-dry climate

Kumar, Rakesh; Asati, Arun Kumar

doi:10.1007/s12206-018-1043-6

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…Mehdid et al [75] proposed a new transient semi-analytical model as Generalized RBM model (GRBM) for predicting air temperature through EAHE in continuous behavior. In another study, the EAHE with concrete pipes has been studied in hot-dry weather [76]. Habibi and Hakkaki-Fard [77] evaluated the initial installation cost of four disparate ground heat exchangers: linear, spiral, horizontal and vertical.…”

Section: Literature Reviewmentioning

confidence: 99%

Techno-economic assessment and optimization of a hybrid renewable earth - air heat exchanger coupled with electric boiler, hydrogen, wind and PV configurations

2020

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Section: Literature Reviewmentioning

confidence: 99%

Techno-economic assessment and optimization of a hybrid renewable earth - air heat exchanger coupled with electric boiler, hydrogen, wind and PV configurations

2020

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“…They discovered that for diameters of 0.1, 0.2, and 0.3 m, the outlet temperature ranged from 22.3 • C to 25.6 • C, from 22.6 • C to 28.6 • C, and from 25.4 • C to 32.4 • C, respectively. In a later investigation, Serageldin et al [18], it was discovered that increasing the tube widths from 0.0508 m to 0.0762 m increased the exit temperature from 0.4 • C to 18.7 • C. By increasing the pipe diameter, the temperature difference between the inlet and output air is reduced [30][31][32]. Liu et al [33] created a numerical model of a vertical earth-to-air tube heat exchanger (EATHE) and conducted a parametric analysis on it.…”

Section: Introductionmentioning

confidence: 98%

Archives of Thermodynamics

Ahmad,

Prakash

2022

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This paper presents the experimental investigation of an earthto-air heat exchanger for heating purposes in the Patna region of India, using an experimental test rig. In the view of the author, real field experiments have several limitations such as lack of repeatability and uncontrolled conditions. It also takes more time for the response of parameters that depends on nature and climate. Moreover, earth-to-air heat exchangers may be expensive to fabricate and require more land area. Thus, in this work authors executed their experimental work in indoor controllable environments to investigate the thermal performance of an earth-to-air heat exchanger. The actual soil conditions were created and maintained the temperature at 26 • C throughout the soil in the vicinity of pipes. Three horizontal PVC pipes of equal lengths and diameters of 0.0285 m, 0.038 m and 0.0485 m were installed in the test rig. The experiments were performed for different inlet air velocities at ambient air temperature. This study acknowledges that the maximum rise in outlet temperature occurs at a lower speed for smaller pipes. Also, the maximum effectiveness of 0.83 was observed at 2 m/s for the smallest diameter pipe.

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“…To make a room cooler and adaptive to human comfort conditions we use the Conventional HVAC system which has a Compressor, condenser and all the major component to allow the exchange of heat from hot input reservoir to cold reservoir. Amongst which the natural and efficient one is the Natural Convective Heat transfer mode, in simple terms, Ventilation [5].…”

Section: Introductionmentioning

confidence: 99%

Design of HVAC System using the Phenomena of Diurnal Temperature fluctuation

Kaname,

Jha,

Kamble

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The total energy usage of the domestic sector accounts for 35.3% of total global energy consumption of this percentage, 50% is used for room and domestic HVAC systems. We worked for designing a standard module to achieve the maximum temperature difference. In this paper Diurnal Temperature Variation phenomena has been studied. The standard Simulation of the HVAC system using Diurnal Temperature Variation has been performed. The current work is a scale down model of Ground Source Heat Pump which is totally renewable in nature. This scale down model works on Diurnal temperature variation. Diurnal temperature fluctuation is the temperature difference obtained during the daytime and night time with higher and lower soil temperature. Same phenomenon is used to obtain a cooling effect and heating effect as we go deeper inside the Earth. The current work is complete replica of Ground source heat pump where the application of this phenomenon is used. Air as a flowing media is used for heat transfer between soil. The air is meant to be flown through the capillary tubes and at certain depth we get a cooling or heating effect according to atmospheric conditions. Along with that we do have to care about the human leisure requirements, for the very purpose we are also passing some amount of fresh air along with reusing the cool air inside the room by flowing it through the walls of room to provide insulation against the infiltrating heat and other elements that add temperature inside the room. It has been identified the 10.40% reduction in atmospheric air and hence it can be concluded that the geothermal HVAC system can be a sustainable and energy efficient alternative to traditional HVAC system. Also identified that the geothermal HVAC systems offer a promising solution for reducing greenhouse gas emissions and increasing energy efficiency in the building sector.

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Influence of parameters on performance of earth air heat exchanger in hot-dry climate

Cited by 8 publications

References 22 publications

Techno-economic assessment and optimization of a hybrid renewable earth - air heat exchanger coupled with electric boiler, hydrogen, wind and PV configurations

Techno-economic assessment and optimization of a hybrid renewable earth - air heat exchanger coupled with electric boiler, hydrogen, wind and PV configurations

Archives of Thermodynamics

Design of HVAC System using the Phenomena of Diurnal Temperature fluctuation

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