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THE MODELING AND ENERGY EFFICIENCY ANALYSIS OF THERMAL ENERGY MANAGEMENT OPERATION OF GROUND SOURCE HEAT PUMP AIR-CONDITIONING SYSTEM

ABSTRACT
To improve the energy-saving effect of the ground source heat pump air-conditioning system, an example is investigated, and the annual loads of the building are simulated and analyzed. The thermal energy management operation modelling is conducted. The hydraulic analysis is performed for different modes in each section. Given the same flow and tube type, a larger pipe diameter indicates a smaller hydraulic loss. Compared with the parallel 5-well loop and the parallel 10-well loop, the hydraulic loss of the series 2-well loop is the highest. When the sub-catch is connected to 5 loops, as the number of series wells increases, the tube length gets longer, the flow rate allocated by the loop gets less, and the load increases. Besides, the energy efficiency ratio of the ground source side decreases as the heat rejection load increases. Therefore, by adjusting the pipe diameter, the pipe type, and the depth of the well, the hydraulic loss can be reduced. The energy-saving effect of the loop in the parallel mode is better. Given the limited number of the managed wells, the parallel circuit can be adjusted to the same program. The connection allows the collector to distribute the flow evenly. The energy efficiency ratio of the ground source can be improved by changing the diameter of the horizontal trunk pipe. It is hoped that the hydraulic optimization design of the ground source heat pump air-conditioning system can provide a theoretical basis for the application and promotion of the ground source heat pumps.
KEYWORDS
PAPER SUBMITTED: 2019-11-23
PAPER REVISED: 2020-01-06
PAPER ACCEPTED: 2020-01-20
PUBLISHED ONLINE: 2020-03-15
DOI REFERENCE: https://doi.org/10.2298/TSCI191123114W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE 5, PAGES [3229 - 3237]
REFERENCES
  1. Vikas V, Murugesan K. Experimental study of solar assisted ground source heat pump system during space heating operation from morning to evening, Journal of Mechanical Science & Technology, 32(2018), 1, pp. 391-398.
  2. Shaofei Wu, Mingqing Wang, Yuntao Zou. Bidirectional cognitive computing method supported by cloud technology, Cognitive Systems Research, 52(2018), pp. 615-621
  3. Wu S, et al. Ecological effect evaluation of biogas project integrated with solar-ground source heat pump system and slurry recirculation, Transactions of the Chinese Society of Agricultural Engineering, 33(2017), 5, pp. 205-210.
  4. Zhong T M, et al. Investigation on a R410A Air Conditioning System With Substitution of Double-Row Liquid-Vapor Separation Condenser, Journal of Engineering Thermophysics, 38(2017), 10, pp. 2101-2107.
  5. Ruiz-Calvo F, et al. Development and experimental validation of a TRNSYS dynamic tool for design and energy optimization of ground source heat pump systems, Energies, 10(2017), 10, pp. 1510.
  6. Shaofei Wu. Study and evaluation of clustering algorithm for solubility and thermodynamic data of glycerol derivatives, Thermal Science, 23(2019), 5, pp.2867-2875.
  7. Luo B J, Liu Q. Theoretical Analysis of Air Source Heat Pump With Quasi-Isothermal Compression, Journal of Engineering Thermophysics, 2018, 39(2), pp. 237-241.

© 2020 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence