THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Jianhui Niu

,

Zheng Liang

,

Shuxue Xu

RESEARCH ON FLUID HEAT TRANSFER CHARACTERISTICS OF HEAT PIPE RADIATOR DIRECTLY DRIVEN BY HEAT PUMP

ABSTRACT
The heat pipe radiator directly driven by heat pump heating system has the ad-vantages of fast heat transfer and high energy efficiency. Based on the empirical heat transfer formula, the heat and mass transfer process in the heat pipe radiator was studied. The key parameters in the empirical heat transfer formula were de-rived by combining with the experimental data. The distribution of the thickness of the condensate film and the heat transfer coefficient in the height direction of the heat pipe radiator was analyzed. The influence of the working fluid condensate mass and vapour mass in the heat pipe radiator was investigated. The results showed that the thickness of the liquid film changes from the bottom of 0.1110 mm to the top of 0.0594 mm along the height of the heat pipe. The minimum charge of working fluid is 1.78 kg to 1.81 kg and the heating COP of the system still reach to 3.14 even at the outdoor temperature of -12.6°C.
KEYWORDS
heat pump, heat pipe radiator, heating performance, heating COP
PAPER SUBMITTED: 2023-11-07
PAPER REVISED: 2023-12-28
PAPER ACCEPTED: 2024-01-04
PUBLISHED ONLINE: 2024-04-14
DOI REFERENCE: https://doi.org/10.2298/TSCI231107081N
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 5, PAGES [3617 - 3631]
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Research on fluid heat transfer characteristics of heat pipe radiator directly driven by heat pump

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, 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