Experimental study and thermo-economic analysis of a novel radiant-convective cooling system

Jiang, Tingting; You, Shijun; Zhang, Huan; Wei, Shen; Liu, Huanzhi; Wang, Yaran

doi:10.1016/j.ijrefrig.2021.06.013

Cited by 14 publications

(2 citation statements)

References 26 publications

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“…However, when the water-heated radiator is used for space heating, the heat from the refrigerant is firstly delivered to the water, and then the hot water is sent to the radiator to exchange heat with indoor environment, which degrades the energy utilization of this system. Additionally, water pump and tank, filter and other devices not only increase the system complexity, but also improve the operation and maintenance costs [14]. Xiao et al [15] focused on the performances of the air-to-air heat pump and air-to-water heat pump through numerical simulation, and results…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the heat transfer performance of the radiant floor heating condenser with composite phase change material

Jiang

Zheng²,

You³

et al. 2022

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the heat transfer performance of the radiant floor heating condenser with composite phase change material

Jiang

Zheng²,

You³

et al. 2022

Applied Thermal Engineering

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“…However, the previous studies are mainly focused on radiant cooling systems using chilled water as circulating medium, which requires secondary heat exchange. In the authors' previous work [7], a radiantconvective cooling system with the refrigerant-cooling radiant terminal is proposed, which adopts refrigerant to exchange heat with indoor environment directly and has high energy efficiency. Additionally, this system allows dew condensation behavior on its surface and possesses the capability of independent dehumidification.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Aluminum Column-Wing Type Refrigerant-Direct Radiant Cooling System

Tingting¹,

Jiang²,

You³

et al. 2021

Preprint

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The refrigerant-direct radiant cooling (RDRC) systems have become increasingly popular owing to good thermal comfort and high energy efficiency. However, the existing RDRC terminal has complex structure and large occupation area. To tackle these problems, an aluminum column-wing type RDRC (ACT-RDRC) terminal is presented. The detailed numerical model is developed to explore the thermal performance of this system and validated with experimental data. Results shows that when the evaporating temperature increases from 6.0 o C to 14.0 o C, the ratio of the natural convection, condensation latent and radiant cooling capacities changes from 4.6:2.1:1 to 4.5:1.4:1, which indicates that the natural convection is a main contributor in the heat transfer process of this system. To meet the thermal comfort requirements, the relative humidity less than 60% is recommended with the indoor air temperature of 28 o C. A characteristic equation is proposed to accurately predict the cooling performance of the ACT-RDRC system, which is conductive to promote its application.

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Energy efficiency and thermal comfort characteristics of convection–radiation combined cooling system in office buildings

Liu,

et al. 2024

J Mech Sci Technol

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Experimental study and thermo-economic analysis of a novel radiant-convective cooling system

Cited by 14 publications

References 26 publications

Experimental and numerical study on the heat transfer performance of the radiant floor heating condenser with composite phase change material

Experimental and numerical study on the heat transfer performance of the radiant floor heating condenser with composite phase change material

Numerical Simulation of the Aluminum Column-Wing Type Refrigerant-Direct Radiant Cooling System

Energy efficiency and thermal comfort characteristics of convection–radiation combined cooling system in office buildings

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