Experimental study of thermal performance of a ground source heat pump system installed in a Himalayan city of India for composite climatic conditions

Sivasakthivel, T.; Murugesan, K.; Kumar, Surya; Hu, Pingfang; Kobiga, P.

doi:10.1016/j.enbuild.2016.09.034

Cited by 26 publications

(10 citation statements)

References 34 publications

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“…In recent years, many researchers have studied GSHP systems through case studies and simulations. Most of them are concerned with a single or a few individual cases [5][6][7][8][9][10][11], while feasibility investigations of large amount of GSHP systems are not much [12][13][14][15], which is statistically significant.…”

Section: Introductionmentioning

confidence: 85%

Investigation and feasibility study of ground source heat pump for office buildings in China

Lei¹,

Tan²,

Li³

2018

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The adoption of ground-source heat pump (GSHP) in building sector for space heating/cooling, has increased rapidly during the past several decades around the world, especially in China. Meanwhile, it also exposed a lot of problems such as poor economic and energy efficiency, and even failure to operate properly. The purpose of this paper is to post-assess the application of existing GSHP projects, and to analyze the feasibility of ground-coupled heat pumps(GCHP) applied to office buildings in different climatic zones in China. More than one hundred GSHP cases are investigated through literature surveys and field data collection. Based on the post-evaluation results, a model for assessing the adaptability of GCHP is established. The feasibility evaluation of GCHP applied to office buildings are carried out, and key indicators, such as available capacity, energy savings, and costefficiency, etc. are presented among different climatic zones in China.

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Section: Introductionmentioning

confidence: 85%

Investigation and feasibility study of ground source heat pump for office buildings in China

Lei¹,

Tan²,

Li³

2018

EasyChair Preprints

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“…Thermal resistances for the material included between sensors S1-S2 (R 1-2 ), S2-S3 (R 2-3 ), S3-S4 (R 3-4 ), and S4-S5 (R 4-5 ). Determination of the ground thermal conductivity applying Equation (14). This calculation, also made for the material contained between the couple of sensors S1-S2, S2-S3, S3-S4, and S4-S5, is based on the thermal resistances presented in Table 8.…”

Section: Estimation Of the Ground Thermal Conductivitymentioning

confidence: 99%

“…They are commonly used in the verification of numerical or analytical applications and can be implemented to describe a large number of thermodynamic processes [10,11]. In the specific geothermal heat exchange, some published researches are focused on the creation of experimental devices to analyze the thermal phenomena that takes place in a shallow geothermal system at laboratory scale (including different applications; heat pumps and heat-exchanger technologies; and energy recovery) [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Novel Experimental Device to Monitor the Ground Thermal Exchange in a Borehole Heat Exchanger

et al. 2020

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Ground source heat pump (GSHP) systems are becoming popular in space heating and cooling applications. Despite this fact, in most countries, the role of this energy is not as important as it should be nowadays according to its capabilities for energy generation without CO2 emissions, mainly due to the lack of technical knowledge about GSHP performance. The analysis of the physical processes that take part in the geothermal exchanges is necessary to allow the optimal exploitation of the geothermal resources. For all the above, an experimental geothermal device was built in the laboratory to control the phenomena that take place in a borehole heat exchanger (BHE). A 1-m high single-U heat exchanger was inserted in the center of a polyethylene container which also included granular material (surrounding ground) and the grouting material. Temperature sensors were situated in different positions of the experimental setup. Physical processes are evaluated to finally validate the model. Numerous applications can be developed from the experimental BHE. In this research, the determination of the thermal conductivity of the material used as medium was carried out. Results of this parameter were also compared with the ones obtained from the use of the KD2 Pro device.

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“…A reduction in borehole depth with no significant change in heat exchanger output is generally needed for system economy. In this point of view, many research studies have been carried out to find a way to enhance the performance of GHX 7–11 . Faizal et al 12 reported that a highly thermal conductive filler and material can also be mixed with concrete for enhancement of conductive and convective heat transfer.…”

Section: Introductionmentioning

confidence: 99%

A study on utilization of ground source energy for space heating using a nanofluid as a heat carrier

Tarodiya

Verma

Thangavel³

2021

Heat Trans

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Ground source heat pump (GSHP) systems are well established as an energy‐efficient space conditioning device. However, for better utilization of the ground source, improvement in GSHP performance is desirable, which limits the small temperature difference between the ground and the circulating fluid. In this study, efforts have been made to investigate the performance of a ground heat exchanger (GHX) with a nanofluid as a heat carrier. Mathematical modeling is performed for the closed‐loop vertical U‐tube GHX with six different (Al2O3, CuO, graphite, multiwalled carbon nanotube, graphene, and Cu) water‐based nanofluids. The effect of different operating parameters on GHX length, fluid temperature, and pressure drop with nanofluids is determined. On the basis of the analytical results, it is found that the graphite particle‐based nanofluid plays a prominent role to enhance the performance of the GHX as compared with other nanoparticles. The maximum enhancement in the increase in outlet fluid temperature and reduction in pipe length with graphite particle‐based nanofluid are 68.3% and 63.3%, respectively, for an increase in temperature difference from 7°C to 15°C between the atmosphere and the ground. Also, with the graphite particle‐based nanofluid and the increase in pipe diameter from 20 to 50 mm, the fluid outlet temperature increases up to 11.2%, and the requirement in GHX length reduces up to 55%.

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Experimental study of thermal performance of a ground source heat pump system installed in a Himalayan city of India for composite climatic conditions

Cited by 26 publications

References 34 publications

Investigation and feasibility study of ground source heat pump for office buildings in China

Investigation and feasibility study of ground source heat pump for office buildings in China

Novel Experimental Device to Monitor the Ground Thermal Exchange in a Borehole Heat Exchanger

A study on utilization of ground source energy for space heating using a nanofluid as a heat carrier

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