Log in

Relevant bibliographies by topics / Borehole pumps / Journal articles

To see the other types of publications on this topic, follow the link: Borehole pumps.

Journal articles on the topic 'Borehole pumps'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Borehole pumps.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Bellos, Evangelos, and Christos Tzivanidis. "Parametric Investigation of a Ground Source CO2 Heat Pump for Space Heating." Energies 14, no. 12 (2021): 3563. http://dx.doi.org/10.3390/en14123563.

Full text

Abstract:

The objective of the present study is the parametric investigation of a ground source heat pump for space heating purposes with boreholes. The working fluid in the heat pump is CO2, and the geothermal field includes boreholes with vertical heat exchangers (U-tube). This study is conducted with a developed model in Engineering Equation Solver which is validated with data from the literature. Ten different parameters are investigated and more specifically five parameters about the heat pump cycle and five parameters for the geothermal unit. The heat pump’s examined parameters are the high pressu

APA, Harvard, Vancouver, ISO, and other styles

2

Baranov, A. Yu, M. I. Davydenko, Ye V. Sokolova, and O. A. Filatova. "Increasing the pump energy efficiency of the system for discharging liquefied natural gas from large-capacity storage facilities via design improvement." Herald of Dagestan State Technical University. Technical Sciences 48, no. 2 (2021): 9–19. http://dx.doi.org/10.21822/2073-6185-2021-48-2-9-19.

Full text

Abstract:

Abstract. Objective. To determine the most relevant way to improve the energy efficiency of the system for discharging liquefied natural gas (LNG) from large-capacity storage facilities. Methods. The method of analysis of existing systems for LNG discharge from storage tanks was used to identify critical (emergency) elements of the system to be improved and possible options of improving structural elements. Results. The operation of the system for discharging LNG from storage tanks was analysed and its main characteristics were described. Main problems associated with designing and building bo

APA, Harvard, Vancouver, ISO, and other styles

3

Ilisei, Gheorghe, Tiberiu Catalina, Marian Alexandru, and Robert Gavriliuc. "Implementation of a geothermal heat pump system in a solar passive house." E3S Web of Conferences 85 (2019): 07014. http://dx.doi.org/10.1051/e3sconf/20198507014.

Full text

Abstract:

Underground energy sources are becoming increasingly popular and now geothermal heat pumps are frequently used to heat/cool different types of buildings, including for solar passive houses. This article aims at giving a contribution in the development of the thermal modelling of borehole heat storage systems, investigating the possibility of a GSHP (ground source heat pump) implementation with vertical boreholes in a solar passive house. A case study analysing a residential solar passive house is presented as a suitable modelling tool for the estimation of the thermal behaviour of GSHP systems

APA, Harvard, Vancouver, ISO, and other styles

4

Ilisei, Gheorghe, Tiberiu Catalina, and Robert Gavriliuc. "Sensitivity analysis using simulations for a ground source heat pump – implementation on a solar passive house." E3S Web of Conferences 111 (2019): 01070. http://dx.doi.org/10.1051/e3sconf/201911101070.

Full text

Abstract:

Having in sight the need for a strong reduction in CO2 emissions and the fluctuation of the price of fossil fuels, the ground source resources alongside with the ground source heat pumps are becoming more and more widespread for meeting the heating/cooling demand of several types of buildings. This article targets to develop the thermal modelling of borehole heat storage systems. Trying to emphasize some certain advantages of a GSHP (ground source heat pump) with vertical boreholes, a case study analysing a residential solar passive house is presented. The numerical results are produced using

APA, Harvard, Vancouver, ISO, and other styles

5

Nwachukwu, M. C., J. C. Agunwamba, B. C. Okoro, and C. N. Mama. "Comparative Analysis of Existing and Optimal Maintenance Policy of Water Borehole Schemes in South Eastern States of Nigeria." Asian Journal of Water, Environment and Pollution 18, no. 1 (2021): 43–50. http://dx.doi.org/10.3233/ajw210006.

Full text

Abstract:

A study optimising maintenance cost of water borehole schemes in South Eastern states of Nigeria (Abia, Anambra, Ebonyi, Enugu and Imo States) was carried out. Data was collected from 260 boreholes spread across all local government areas in the states. Optimisation results showed that for boreholes (submersible pumps) pumping once per day, the optimal preventive maintenance frequency and resulting savings in cost are 2 and ₦521,076 for Abia; 2 and ₦783,963 for Anambra; 2 and ₦458,242 for Ebonyi; 2 and ₦740,964 for Enugu; 2 and ₦605,187 Imo. For boreholes pumping twice per day, the optimal pre

APA, Harvard, Vancouver, ISO, and other styles

6

Kurevija, Tomislav, Marija Macenić, and Martina Tuschl. "Drilling Deeper in Shallow Geoexchange Heat Pump Systems—Thermogeological, Energy and Hydraulic Benefits and Restraints." Energies 16, no. 18 (2023): 6577. http://dx.doi.org/10.3390/en16186577.

Full text

Abstract:

In the last decade, due to climate change concerns and new environmental regulations in the EU, there was a tremendous rise in installed heat pump systems in new homes and buildings. The majority of these installed units are related to air-source heat pumps, as they offer a good trade-off between capital and operating expenses. However, when analysing heating and cooling heat pump systems from the primary energy consumption and ecological aspects, groundwater and shallow geothermal heat pump systems offer superior efficiency, compared to all market-available thermo-technical systems today. In

APA, Harvard, Vancouver, ISO, and other styles

7

TANZHARIKOV, P. A., and A. T. DONESSOV. "APPLICATION OF GAS SEPARATORS TO IMPROVE CENTRIFUGAL PUMPS." Neft i gaz 1, no. 121 (2020): 42–51. http://dx.doi.org/10.37878/2708-0080/2021-1.03.

Full text

Abstract:

In this article, the problem of monitoring the energy consumption of electric centrifugal pumps and the method of application in the fields with the use of gas separators on the basis of reducing the harmful gas impact on electric centrifugal pumps is developed. Methods of optimization of power consumption by borehole pumps are considered. Conducting comparative bench tests of new stages of a centrifugal pump designed for pumping gas-liquid mixtures (GLM), and determining the degree of influence of free gas on the operating parameters in the entire possible working area of the stage when pumpi

APA, Harvard, Vancouver, ISO, and other styles

8

Magdic, Lucija, Tea Zakula, and Luka Boban. "Improved Analysis of Borehole Heat Exchanger Performance." Energies 16, no. 17 (2023): 6116. http://dx.doi.org/10.3390/en16176116.

Full text

Abstract:

This paper provides recommendations for improved analyses of the performance of ground-coupled heat pumps. Most research on ground-coupled heat pumps focuses on improving the performance of borehole heat exchangers (BHE) and reducing system costs. However, the potential improvements are mainly assessed at the BHE level rather than considering the entire system incorporating a heat pump, circulation pump, and building needs. This paper shows that such an approach can be misleading, and improvements in BHE are significantly overestimated if the operation of the entire system is not simulated. Fo

APA, Harvard, Vancouver, ISO, and other styles

9

Hałaj, Elżbieta. "Finite element modeling of geothermal source of heat pump in long-term operation." E3S Web of Conferences 154 (2020): 04003. http://dx.doi.org/10.1051/e3sconf/202015404003.

Full text

Abstract:

Heat pumps become more and more popular heat source. They can be an alternative choice for obsolete coal fired boilers which are emissive and not ecological. During heat pump installation designing process, especially for heat pumps with higher heating capacity (for example those suppling larger buildings), a simulation of heat balance of ground heat source must be provided. A 3D heat transport model and groundwater flow in the geothermal heat source for heat pump (GSHP) installation was developed in FEFLOW according to Finite Element Modelling Method. The model consists of 25 borehole heat ex

APA, Harvard, Vancouver, ISO, and other styles

10

Wemhoener, C., and C. Meier. "Integration of heat sources for heat pumps of larger capacities." Journal of Physics: Conference Series 2600, no. 2 (2023): 022005. http://dx.doi.org/10.1088/1742-6596/2600/2/022005.

Full text

Abstract:

Abstract Heat pumps are seen as the predominant future heating system in many scenarios. However, with increasing integration of heat pumps sufficient heat sources can be a major obstacle, in particular at higher heating capacities and in existing buildings. The paper investigates two strategies to overcome limitations of the most common individual heat sources outdoor air and ground by the integration of two or more heat sources in order to enable a monovalent heat pump operation. By an integration of the ground for peak load coverage and air as base load the borehole heat exchanger field can

APA, Harvard, Vancouver, ISO, and other styles

11

Wang, Yang Yang, Ping Fang Hu, Fei Lei, Na Zhu, Tian Hua Wu, and Feng Yang. "Research on Optimization of Ground-Coupled Heat Pump Systems under Specific Constraint Conditions." Advanced Materials Research 953-954 (June 2014): 673–79. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.673.

Full text

Abstract:

A design method for ground-coupled heat pump (GCHP) systems with specific constraint conditions is proposed. The total borehole number, borehole depth, borehole space and average velocity of fluid in the U-tube are considered as variables in the optimization problem. The optimization problem of four variables is transformed into that of single decision variable. A case study, which includes different schemes for designing GCHP systems of an office building and the corresponding economic analysis, is performed with the aid of simulation software. The result shows that optimal design parameters

APA, Harvard, Vancouver, ISO, and other styles

12

Brunman, V. E., A. S. Vataev, A. N. Volkov, et al. "Improving the energy efficiency of borehole pumps." Russian Engineering Research 37, no. 7 (2017): 579–80. http://dx.doi.org/10.3103/s1068798x17070061.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Bernard, Oruabena, and Okoh Elechi. "Groundwater Use in Yenagoa: Impact on Residential Development and Investment." Procedure International Journal of Science and Technology 1, no. 3 (2024): 14–22. http://dx.doi.org/10.62796/pijst.2024v1i302.

Full text

Abstract:

In the oil-producing metropolis of Yenagoa and its surroundings in Bayelsa State, Nigeria’s Yenagoa Local Government Area (YELGA), groundwater is the main and only safe source of water. As the capital of Bayelsa State, the city experienced rapid development, resulting in an influx of people and a subsequent freshwater deficit due to increased oil production and groundwater pollution. For the sustainable growth of water resources, preventing water or piezometer level fluctuations and quantitatively estimating the area’s available water supplies are crucial. To meet the water needs of the popula

APA, Harvard, Vancouver, ISO, and other styles

14

Todorov, Oleg, Kari Alanne, Markku Virtanen, and Risto Kosonen. "Different Approaches for Evaluation and Modeling of the Effective Thermal Resistance of Groundwater-Filled Boreholes." Energies 14, no. 21 (2021): 6908. http://dx.doi.org/10.3390/en14216908.

Full text

Abstract:

Groundwater-filled boreholes are a common solution in Scandinavian installations of ground source heat pumps (GSHP) due to the particular hydro-geological conditions with existing bedrock, and groundwater levels close to the surface. Different studies have highlighted the advantage of water-filled boreholes compared with their grouted counterparts since the natural convection of water within the borehole tends to decrease the effective thermal resistance Rb*. In this study, several methods are proposed for the evaluation and modeling of the effective thermal resistance of groundwater-filled bo

APA, Harvard, Vancouver, ISO, and other styles

15

Ran, Yujin, Jia Peng, Xiaolin Tian, et al. "Numerical Study of the Thermo-Hydro-Mechanical Coupling Impacts of Shallow Geothermal Borehole Groups in Fractured Rock Mass on Geological Environment." Energies 17, no. 6 (2024): 1384. http://dx.doi.org/10.3390/en17061384.

Full text

Abstract:

Fractured rock mass is extensively distributed in Karst topography regions, and its geological environment is different from that of the quaternary strata. In this study, the influences on geological environment induced by the construction and operation of a large-scale borehole group of ground source heat pumps are analyzed by a thermo-hydro-mechanical (THM) coupling numerical model. It was found that groundwater is redirected as the boreholes can function as channels to the surface, and the flow velocity in the upstream of borehole group is higher than those downstream. This change in ground

APA, Harvard, Vancouver, ISO, and other styles

16

Abdirazakov, Akbar Ibrohimovich. "RPM CONTROL OF THE ELECTRIC MOTOR OF BOREHOLE PUMPS THROUGH A FREQUENCY CONVERTER." INTERNATIONAL BULLETIN OF APPLIED SCIENCE AND TECHNOLOGY 2, no. 12 (2022): 204–8. https://doi.org/10.5281/zenodo.7466110.

Full text

Abstract:

This article provides information on regulating the flow and pressure of water by a pump through a frequency converter for the number of revolutions of an electric motor of borehole pumps used in crop irrigation, irrigation and the oil and gas industry, and the quality of a frequency converter. the soft start of the pump used in it, the regulation of the number of revolutions of the electric motor, energy saving, the main characteristics of its operation and the overall efficiency are shown.

APA, Harvard, Vancouver, ISO, and other styles

17

Baldry, Michael. "Specifying borehole pumps for optimum efficiency & longevity." World Pumps 1995, no. 345 (1995): 40–42. http://dx.doi.org/10.1016/s0262-1762(99)81189-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Zagorodnov, V., and L. G. Thompson. "Thermal electric ice-core drills: history and new design options for intermediate-depth drilling." Annals of Glaciology 55, no. 68 (2014): 322–30. http://dx.doi.org/10.3189/2014aog68a012.

Full text

Abstract:

AbstractIce coring of temperate and polythermal glaciers demonstrates some limitations of most electromechanical (EM) and thermal electric (TE) drills. Most TE drills are heavy, require a heavy power system, work slowly and cannot operate in boreholes going through the cold–temperate ice transition. Antifreeze thermal electric drills (ATED) are capable of operating in polar ice caps, polythermal and temperate glaciers, in boreholes filled with water and/or hydrophilic fluids. Performance of the ATED drill can be improved by using an open-top core barrel and low-power and narrow-kerf coring hea

APA, Harvard, Vancouver, ISO, and other styles

19

Eswiasi, Adel, and Phalguni Mukhopadhyaya. "Critical Review on Efficiency of Ground Heat Exchangers in Heat Pump Systems." Clean Technologies 2, no. 2 (2020): 204–24. http://dx.doi.org/10.3390/cleantechnol2020014.

Full text

Abstract:

Use of ground source heat pumps has increased significantly in recent years for space heating and cooling of residential houses and commercial buildings, in both heating (i.e., cold region) and cooling (i.e., warm region) dominated climates, due to its low carbon footprint. Ground source heat pumps exploit the passive energy storage capacity of the ground for heating and cooling of buildings. The main focus of this paper is to critically review how different construction and operation parameters (e.g., pipe configuration, pipe diameter, grout, heat injection rate, and volumetric flow rate) hav

APA, Harvard, Vancouver, ISO, and other styles

20

Chen, Yixia, Tingting Luo, Peng Pei, Yujin Ran, and Long Tang. "Development of a Phase Change Backfill Material with High Heat Capacity and High Thermal Conductivity Used for Ground Source Heat Pumps." International Journal of Energy Research 2023 (February 6, 2023): 1–18. http://dx.doi.org/10.1155/2023/9180217.

Full text

Abstract:

To solve the problems of phase change materials (PCM) including low thermal conductivity and easy washout and loss after liquefaction in current studies on borehole backfill materials, capric acid-lauric acid/expanded graphite (CA-LA/EG) PCM admixture with high thermal conductivity and high heat capacity was developed by using expanded graphite as the carrier. The PCM admixture is mixed with original sands (drilling debris) to make phase change backfill materials (PCBM). When the PCM backfilling is applied, the key issue is to dissipate the large amount of heat stored as latent heat in borehol

APA, Harvard, Vancouver, ISO, and other styles

21

Костюк, А. В. "Надежность скважинных насосных агрегатов: причины выхода из строя и способы их решения". Vodosnabzhenie i sanitarnaia tehnika, № 6 (16 червня 2025): 36–39. https://doi.org/10.35776/vst.2025.06.05.

Full text

Abstract:

Рассмотрены наиболее частые причины выхода скважинных насосов из строя, способы их устранения как на этапе подбора насосов, так и при эксплуатации. Значительное количество выхода насосов из строя связано с неверным подбором насосов для условий эксплуатации, в частности, выбором насосов с характеристиками, не соответствующими требованиям системы, что приводит к работе насоса за пределами рабочего диапазона. Приведены примеры наиболее распространенных ошибок при подборе насосов и их последствия. Мониторинг режима работы насоса, в частности, контроль положения рабочей точки относительно рабочего

APA, Harvard, Vancouver, ISO, and other styles

22

Ballerini, Vincenzo, Eugenia Rossi di Schio, Paolo Valdiserri, Claudia Naldi, and Matteo Dongellini. "A Long-Term Dynamic Analysis of Heat Pumps Coupled to Ground Heated by Solar Collectors." Applied Sciences 13, no. 13 (2023): 7651. http://dx.doi.org/10.3390/app13137651.

Full text

Abstract:

In agreement with the decarbonization of the building sector to meet the 2050 climate neutrality targets, borehole thermal storage for solar energy represents a potential solution to increase the energy efficiency of renewable energy plants. As is well known, electricity is not the optimum solution to integrate large inflows of fluctuating renewable energy. In the present paper, we investigate the possibility to use the solar collector to give energy to the borehole field. In detail, a solar-assisted geothermal heat pump is applied to a school located in Milan, Italy. In winter, both the energ

APA, Harvard, Vancouver, ISO, and other styles

23

Berdiev, U., A. Norboev, and Z. Mamarajabova. "Investigation of asymmetry in asynchronous motor used in a borehole pump." E3S Web of Conferences 383 (2023): 04057. http://dx.doi.org/10.1051/e3sconf/202338304057.

Full text

Abstract:

In this paper, the values of the symmetrical states of asynchronous motors used in borehole pumps are obtained at different time intervals, the results are analyzed, and formulas for changing the symmetrical states over time are developed.

APA, Harvard, Vancouver, ISO, and other styles

24

Chouzenoux, C. "Measurement of borehole seismic noise with hydrophones." GEOPHYSICS 56, no. 3 (1991): 397–401. http://dx.doi.org/10.1190/1.1443057.

Full text

Abstract:

High sensitivity hydrophones are needed to detect borehole pressure noise in the 1 kHz frequency band. Measurements conducted at various sites show that seismic noise level in borehole drops rapidly as frequency increases (−12 dB per octave). In a quiet environment, the measured rms pressure noise level is 2 mPa around 1 kHz; a crosswell system working in this frequency range will take full advantage of low seismic noise level. Moreover, part of borehole seismic noise propagates as tube waves so that noise reduction is expected by array filtering techniques. In case of a noisy environment such

APA, Harvard, Vancouver, ISO, and other styles

25

Saik, Pavlo. "Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump." Advanced Engineering Forum 25 (November 2017): 128–35. http://dx.doi.org/10.4028/www.scientific.net/aef.25.128.

Full text

Abstract:

The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed. A number of available ways for using the sources of waste heat of mining enterprises, namely: outlet ventilation flow, mine water and other rock waste dumps, are investigated. The technological scheme of heat recovery from rock waste dump using heat pumps, which are component segments of the heat pump geosystem on the basis of borehole underground coal gasification, is developed.

APA, Harvard, Vancouver, ISO, and other styles

26

Liang, Mingshan, Jianhua Tu, Lingwen Zeng, Zhaoqing Zhang, Nan Cheng, and Yongqiang Luo. "Thermal Performance Analysis and Multi-Factor Optimization of Middle–Deep Coaxial Borehole Heat Exchanger System for Low-Carbon Building Heating." Sustainability 15, no. 21 (2023): 15215. http://dx.doi.org/10.3390/su152115215.

Full text

Abstract:

Ground-source heat pumps with deep borehole heat exchangers can fully utilize deep geothermal energy, effectively reducing the consumption of non-renewable energy for building air conditioning and achieving energy conservation and emissions reduction goals. However, the middle–deep coaxial borehole heat exchange (MDBHE) development is insufficient, and there is currently a lack of definitive guidelines for system optimal design and operation. This paper firstly establishes an effective and efficient system model and examines nine important parameters related to the design and operation of the

APA, Harvard, Vancouver, ISO, and other styles

27

Kassai, Miklós. "Heat Pump Heating System Development of Educational Building based on Energy, Economical and Environmental Impacts." Periodica Polytechnica Mechanical Engineering 63, no. 3 (2019): 207–13. http://dx.doi.org/10.3311/ppme.13872.

Full text

Abstract:

In this research the technical designing of energy efficient heating system with vertical-borehole heat pumps for institutional buildings was performed. The local government would like to change the old gas boiler-based heat producing system to up-to-date, environmental friendly equipment with the financial support of the European Union. The payback time was calculated and environmental calculations were achieved with carbon dioxide saving by various conditions that were also achieved during the research project. The results show that the heat pump system also provides a significant reduction

APA, Harvard, Vancouver, ISO, and other styles

28

Korotkov, Iurii. "Increasing the operating time of electrical submersible pumps by using self-cleaning filters." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 3 (June 20, 2023): 9–16. http://dx.doi.org/10.21440/0536-1028-2023-3-9-16.

Full text

Abstract:

Introduction. The article considers issues relating to electrical submersible pumps (ESP) work under complicated operating conditions caused by a high content of solids in the pumped borehole fluid. Factors that cause or exacerbate these complications are also studied. The article justifies the urgency of increasing the operating time of submersible equipment under complicated operating conditions. Methods of research includes analyzing engineering and process approaches to ESP protection from a detrimental effect of solid particles. Within these approaches, specific ways of protecting borehol

APA, Harvard, Vancouver, ISO, and other styles

29

Fussi, Fabio, Víctor Gómez-Escalonilla, Jean-Jacques Rahobisoa, Hariliva Omena Anahy Ramanantsoa, and Pedro Martinez-Santos. "An Automated Method to Assess the Suitability of Existing Boreholes for Solar-Based Pumping Systems: An Application to Southern Madagascar." Sustainability 17, no. 3 (2025): 1255. https://doi.org/10.3390/su17031255.

Full text

Abstract:

Groundwater provides a strategic resource in the face of uncertain climate conditions in arid and semi-arid regions. Solar-based groundwater pumping is quickly gaining ground across rural sub-Saharan Africa, promoted by national and international organizations as the new technology of choice for water supply and irrigation. A crucial question in large-scale developments is whether pre-existing boreholes can be fitted with solar pumps. Based on data from southern Madagascar, this paper provides an automated method to deal with this. Our approach relies on a combination of hydrogeological criter

APA, Harvard, Vancouver, ISO, and other styles

30

Deng, Jiewen, Qingpeng Wei, Shi He, Mei Liang, and Hui Zhang. "What Is the Main Difference between Medium-Depth Geothermal Heat Pump Systems and Conventional Shallow-Depth Geothermal Heat Pump Systems? Field Tests and Comparative Study." Applied Sciences 9, no. 23 (2019): 5120. http://dx.doi.org/10.3390/app9235120.

Full text

Abstract:

Recently, the medium-depth geothermal heat pump systems (MD-GHPs) have been applied for space heating in China. Theoretically, the MD-GHPs use deep borehole heat exchangers (DBHEs) to extract heat from the medium-depth geothermal energy with the depth of 2~3 km, thus, improving the energy performance of whole systems obviously. This paper conducts field tests of nine conventional shallow-depth geothermal heat pump systems (SD-GHPs) and eight MD-GHPs to analyze the energy performance of heat pump systems, as well as heat transfer performance of ground heat exchangers. Then the comparative studi

APA, Harvard, Vancouver, ISO, and other styles

31

Truslove, Jonathan, Alexandra V. M. Miller, Nicholas Mannix, et al. "Understanding the Functionality and Burden on Decentralised Rural Water Supply: Influence of Millennium Development Goal 7c Coverage Targets." Water 11, no. 3 (2019): 494. http://dx.doi.org/10.3390/w11030494.

Full text

Abstract:

The sustainability of rural groundwater supply infrastructure, primarily boreholes fitted with hand pumps, remains a challenge. This study evaluates whether coverage targets set out within the Millennium Development Goals (MDG) inadvertently increased the challenge to sustainably manage water supply infrastructure. Furthermore, the drive towards decentralised service delivery contributes to the financial burden of water supply assets. A sample size of 14,943 Afridev hand pump boreholes was extracted from a comprehensive live data set of 68,984 water points across Malawi to investigate the sust

APA, Harvard, Vancouver, ISO, and other styles

32

Bendea, Codruta, Ioan Felea, and Gabriel Bendea. "Energy Performance Analysis of the first Research-only Ground Coupled Heat Pump in Romania." Journal of sustainable energy 1, no. 4 (2010): 57–62.

Find full text

Abstract:

One laboratory belonging to Energy Engineering Faculty is heated with a ground-coupled heat pump (GCHP) system having two types of ground heat exchangers: a vertical one and a horizontal one. This paper presents, at first, several coefficients of performance that can be defined for heat pumps together with their usability. Then, an energy efficiency model is set specially for CGHP systems. In this paper the simulation of energy performances is done only for the vertical heat exchanger (borehole heat exchanger) having two configurations: single-U and double-U. All simulation results range betwe

APA, Harvard, Vancouver, ISO, and other styles

33

Panevny, D. A., and A. V. Panevny. "Improving the Energy Efficiency of the Use of Borehole Jet Pumps." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 63, no. 5 (2020): 462–71. http://dx.doi.org/10.21122/1029-7448-2020-63-5-462-471.

Full text

Abstract:

The article presents rationales for choosing the depth of installation of an oil jet pump in the borehole that which ensures maximum efficiency of its operation. The operating parameters of the ejection system are determined by the joint solution of the characteristic equations of the high-pressure jet pump and the hydraulic system. In the process of solving the system of equations, the method of successive approximations, the Delphi software environment and PTC Mathcad resources were used. The equation of the characteristics of the jet pump hydraulic system was obtained by determining the pre

APA, Harvard, Vancouver, ISO, and other styles

34

Shishlyannikov, Dmitriy, Valeriy Zverev, Anna Ivanchenko, and Ivan Zvonarev. "Increasing the Time between Failures of Electric Submersible Pumps for Oil Production with High Content of Mechanical Impurities." Applied Sciences 12, no. 1 (2021): 64. http://dx.doi.org/10.3390/app12010064.

Full text

Abstract:

The main principles of hydroabrasive wear of parts of the pumping stages of well’s electric submersible pumps are considered in this article. The concentration, grain-size distribution and shape of solid particles have the greatest impact on the abrasion ability of particles of mechanical impurities interacting with the parts of pumping equipment. The implementation of filters is the most effective and affordable way to protect borehole electric submersible pumps from hydroabrasive wear. Filters reduce the concentration and decrease the average grain-size of mechanical impurities going through

APA, Harvard, Vancouver, ISO, and other styles

35

Kondrat, Oleksandr, and Oleh Lukin. "Study of the kinematic field of mixed flows." Prospecting and Development of Oil and Gas Fields 24, no. 1 (2024): 23–31. http://dx.doi.org/10.69628/pdogf/1.2024.23.

Full text

Abstract:

The relevance of the study is determined by the ability of borehole jet pumps to increase the efficiency of technological processes in difficult mountainous and geological conditions. The aim was to establish the laws of transformation of the velocity profile in the production inlet chamber of a borehole jet pump based on the construction and subsequent analysis of the distribution of kinematic parameters of the total working and injected flows. Simulation of the operating process of the ejection system was performed in the ANSYS software and calculation module for four three-dimensional model

APA, Harvard, Vancouver, ISO, and other styles

36

Zabirov, F. Sh, B. M. Latypov, R. G. Sharafiev, and R. A. Gilmanshin. "Transport of Solid Particles with Fluid Flow in Rotating Pipes." Journal of Applied Engineering Sciences 9, no. 2 (2019): 201–6. http://dx.doi.org/10.2478/jaes-2019-0028.

Full text

Abstract:

Abstract The article addresses the recent problem of borehole lifting of oil containing sand solids. The presence of sand in oil produced results in a reduced operating life of downhole equipment. The problem of preventing sanding up and sand formation in pumping equipment may be solved and stable sand production may be ensured by producing oil using borehole screw pumps with a surface-type drive, in which the screw is rotated by rotating hollow rods. Rotating hollow rods improve carry-over of sand particles to the surface with rotational oil flow by imparting additional momentum to these part

APA, Harvard, Vancouver, ISO, and other styles

37

Suroto, Jimmy Bob, Ramdhan Rabbani, Anas Abdul Latif, and Presentia Biserva Aesh. "Sistem Dewatering Air Panas Tambang Bawah Tanah Toguraci PT. Nusa Halmahera Minerals." Prosiding Temu Profesi Tahunan PERHAPI 1, no. 1 (2019): 35–46. http://dx.doi.org/10.36986/ptptp.v0i0.4.

Full text

Abstract:

The development of the Toguraci Underground Mine was begun in 2011 with the ore production started in 2012. The amount of water continued to increase in the Underground Mine at the beginning of 2014 which became problem that effected the activities of mining. The increase of hot water Toguraci underground mining effected to the safety for workers who are exposed to hot water, ventilation problems and equipment that are submerged in hot water. Tuguraci mine has two dewatering systems, namely dewatering systems on the surface and dewatering systems in underground mines. The handling of surface w

APA, Harvard, Vancouver, ISO, and other styles

38

KARIBAYEV, A. A., G. E. KALESHEVA, and A. A. KARIBAYEV. "EFFICIENCY OF DOWNHOLE ROD PUMPS IN COMPLICATED CONDITIONS." Neft i Gaz 144, no. 6 (2024): 32–40. https://doi.org/10.37878/2708-0080/2024-6.04.

Full text

Abstract:

The article discusses the influence of sand and mechanical impurities on the operation of borehole pumps (USA) during oil production. Sand coming out of the reservoir leads to the destruction of pump parts, piston jamming, damage to threaded connections and rapid wear of pipes, which leads to a shortened repair period. Various methods are proposed to combat these problems, such as the installation of sand anchors, the use of filters and tubular rods. It also provides for the use of additional equipment, including gas sandblasting anchors (PG), a tubular zoom camera (КТО) and an auto connection

APA, Harvard, Vancouver, ISO, and other styles

39

Yang, Wei, Ruiling Yu, Chenchen Bao, Manfeng Li, and Linlin Zhang. "Application of Fast Fourier Transform-based Method for the Thermal System of Buried Pipe Heat Exchanger." Sustainability in Environment 10, no. 2 (2025): p41. https://doi.org/10.22158/se.v10n2p41.

Full text

Abstract:

The Fourier transform method for discrete sequences is introduced in this study and applied to decompose the heat flux per unit borehole depth in buried pipe heat exchangers (BPHE) into a summation of Fourier series. The linear relationship between the heat flux per unit borehole depth in BPHE and the cooling and heating load of Ground-Coupled Heat Pumps (GCHP) is delineated. It is demonstrated that, similar to the cooling and heating load of GCHP, the heat flux per unit borehole depth in BPHE exhibits a general trend with periodic variability on an annual scale (8760 hours). The Fourier trans

APA, Harvard, Vancouver, ISO, and other styles

40

Agustan, Agustan, Edward Ngii, Adris Ade Putra, Sitti Nurjannah Ahmad, Rudi Balaka, and Fitriah S. Fitriah S. "TRANSFER PENGETAHUAN TEKNOLOGI POMPA HIDRAM (NON LISTRIK & BBM) DI DESA LALOUESAMBA KABUPATEN KONAWE SELATAN." Jurnal Pengabdian NUSANTARA 2, no. 1 (2022): 1. http://dx.doi.org/10.33772/jpnus.v2i1.23939.

Full text

Abstract:

Lalouesamba Village is one of the youngest villages in the South Konawe Regency, with a non-coastal slope topography of 82 meters above sea level and an area of about 4.1 km2. The majority are farming/gardening, coolies, and construction workers are the main occupations. Potential water resources include rivers with a width of 3-5 meters around the village. Each 1 artesian spot, boiling water spot, murky water borehole, and 5 units of wells with a depth of 15 meters. The problem with this village partner is that there is still a lack of access to clean water, so the solution offered to lift/pu

APA, Harvard, Vancouver, ISO, and other styles

41

Puttige, Anjan Rao, Staffan Andersson, Ronny Östin, and Thomas Olofsson. "A Novel Analytical-ANN Hybrid Model for Borehole Heat Exchanger." Energies 13, no. 23 (2020): 6213. http://dx.doi.org/10.3390/en13236213.

Full text

Abstract:

Optimizing the operation of ground source heat pumps requires simulation of both short-term and long-term response of the borehole heat exchanger. However, the current physical and neural network based models are not suited to handle the large range of time scales, especially for large borehole fields. In this study, we present a hybrid model for long-term simulation of BHE with high resolution in time. The model uses an analytical model with low time resolution to guide an artificial neural network model with high time resolution. We trained, tuned, and tested the hybrid model using measured

APA, Harvard, Vancouver, ISO, and other styles

42

Zhou, Sihan, Lijie Zhu, Runan Wan, et al. "An Overview of Sandbox Experiment on Ground Heat Exchangers." Sustainability 15, no. 14 (2023): 11095. http://dx.doi.org/10.3390/su151411095.

Full text

Abstract:

As an energy-efficient and low-carbon technology, ground-source heat pumps are promising to contribute to carbon neutrality in the building sector. A crucial component of these systems is the ground heat exchanger, which has been extensively studied through sandbox experiments. These experiments play a vital role in understanding heat transfer characteristics and validating simulation results. In order to facilitate the improvement of ground heat exchangers and the development of ground-source heat-pump systems, this article provides a comprehensive summary of existing sandbox experiments. The

APA, Harvard, Vancouver, ISO, and other styles

43

Gusak, Alexander, Olga Matvienko, and Victor Nenja. "Investigation of Energy Losses in the Flow Section of the Small-Sized Axial-Flow Pump." Applied Mechanics and Materials 630 (September 2014): 29–34. http://dx.doi.org/10.4028/www.scientific.net/amm.630.29.

Full text

Abstract:

The theses present results of a study of a small-sized axial-flow stage with blades of small aspect ratio, which is designed for submersible borehole pumps. The energy losses in the flow section of stage are analyzed in research. Refined equations of total hydraulic losses for these flow parts were received by numerical simulation. The results of numerical simulation are compared with experimental data.

APA, Harvard, Vancouver, ISO, and other styles

44

Christe, Pierre, François J. Baillifard, and Gilbert Steinmann. "ThermoProVal: towards improved guidelines for the realisation of borehole heat pumps in alpine geological settings." European Geologist Journal 43, Geothermal - The Energy of the Future (2017): 46–52. https://doi.org/10.5281/zenodo.580857.

Full text

Abstract:

Project ThermoProVal aims at promoting the use of shallow geothermal energy in alpine areas with a particular emphasis on the correct execution of geothermal boreholes. This is not only important to ensure sound performance of the borehole heat pump (BHP) during its life-cycle but also mandatory, as laid down in the Swiss Federal Waters Protection Ordinance. The ski resort of Verbier in the Swiss Alps is used as a case example. The study systematically compares the dimensioning of BHP based on <em>a priori</em> parameter values (deduced from knowledge of the local geology and the SIA 384/6 Swi

APA, Harvard, Vancouver, ISO, and other styles

45

Carnieletto, Laura, Borja Badenes, Marco Belliardi, et al. "A European Database of Building Energy Profiles to Support the Design of Ground Source Heat Pumps." Energies 12, no. 13 (2019): 2496. http://dx.doi.org/10.3390/en12132496.

Full text

Abstract:

The design of ground source heat pumps is a fundamental step to ensure the high energy efficiency of heat pump systems throughout their operating years. To enhance the diffusion of ground source heat pump systems, two different tools are developed in the H2020 research project named, “Cheap GSHPs”: A design tool and a decision support system. In both cases, the energy demand of the buildings may not be calculated by the user. The main input data, to evaluate the size of the borehole heat exchangers, is the building energy demand. This paper presents a methodology to correlate energy demand, bu

APA, Harvard, Vancouver, ISO, and other styles

46

Shakerin, Mohammad, Vilde Eikeskog, Yantong Li, Trond Thorgeir Harsem, Natasa Nord, and Haoran Li. "Investigation of Combined Heating and Cooling Systems with Short- and Long-Term Storages." Sustainability 14, no. 9 (2022): 5709. http://dx.doi.org/10.3390/su14095709.

Full text

Abstract:

Modern buildings in cold climates, like Norway, may have simultaneous heating and cooling demands. For these buildings, integrated heating and cooling systems with heat pumps, as well as short-term and long-term thermal storage, are promising solutions. Furthermore, combining this integrated system with renewables aids in the transition to future sustainable building energy systems. However, cost-effectively designing and operating such a complicated system is challenging and rarely addressed. Therefore, this research proposed an integrated heating and cooling system that incorporated a short-

APA, Harvard, Vancouver, ISO, and other styles

47

Wu, Wei, Tian You, Baolong Wang, Wenxing Shi, and Xianting Li. "Evaluation of ground source absorption heat pumps combined with borehole free cooling." Energy Conversion and Management 79 (March 2014): 334–43. http://dx.doi.org/10.1016/j.enconman.2013.11.045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Yang, H., P. Cui, and Z. Fang. "Vertical-borehole ground-coupled heat pumps: A review of models and systems." Applied Energy 87, no. 1 (2010): 16–27. http://dx.doi.org/10.1016/j.apenergy.2009.04.038.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Ivashechkin, V. V., and J. A. Medvedeva. "Optimization of the Operation of Groundwater Intakes Using Two-Column Wells." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 65, no. 5 (2022): 451–62. http://dx.doi.org/10.21122/1029-7448-2023-65-5-451-462.

Full text

Abstract:

The average number of wells at a typical water intake is 30–40; while the power of the submersible pump is usually 32–40 kW; which means that only at one well water intake the power consumption of electric pumping equipment during the hours of greatest water consumption can reach 900–1600 kW. In the structure of operating costs of well water intakes; the share of electricity costs reaches 85 %. Taking into account the requirements for reducing costs and water tariffs of housing and communal services enterprises as well as of water utilities; energy saving is an urgent task. The article conside

APA, Harvard, Vancouver, ISO, and other styles

50

Kovshov, V. D., M. E. Sidorov, and S. V. Svetlakova. "MODELING OF DYNAMOMETER CARDS IN QUASISTEADY OPERATION MODES OF SUCKER ROD PUMPS." Oil and Gas Studies, no. 4 (August 30, 2015): 51–56. http://dx.doi.org/10.31660/0445-0108-2015-4-51-56.

Full text

Abstract:

The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards . It is shown that the dynamometer cards of SRP measured during normal operation and in the poor inflow conditions enable to assess the fluid level in the annulus, a maximum fluid influx into the borehole and parameters of the reservoir.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!