Effects of using BN/water nanofluid on the thermal performance, energy saving, and power consumption of a panel radiator heating system

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-03-11 DOI:10.1016/j.csite.2025.106024

Ahmet Çağlar

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Abstract

Heating systems account for a significant portion of global energy consumption, yet conventional fluids like water limit the thermal efficiency of panel radiators. Improving radiator performance while reducing energy use is critical for achieving sustainability goals. This study addresses this challenge by investigating boron nitride (BN)-doped water nanofluid as an advanced heat transfer fluid, which promises enhanced thermal performance and energy savings compared to water. A Type 11 Panel-Convector (PC) radiator was tested experimentally under transient regime conditions with both water and nanofluid. The amount of heat emitted from the radiator to the room and the air-side heat transfer coefficient were determined for both fluids at a radiator inlet temperature of 75 °C. Additionally, energy consumptions during the experiments for both fluids are compared. The results indicate that the desired room temperature was reached in 17 min using nanofluid, while it took 27 min with water. The air-side heat transfer coefficient increased by an average of 71 %, while the heat emission rate improved by up to 45 % compared to water. The use of BN-water nanofluid results in an 8.1 % overall energy savings in the heating system. The BN-water nanofluid significiantly improves radiator performance and overall system energy efficiency.

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使用 BN/水纳米流体对板式散热器加热系统的热性能、节能和能耗的影响

供暖系统占全球能源消耗的很大一部分，但传统的流体，如水，限制了面板散热器的热效率。在减少能源使用的同时提高散热器性能对于实现可持续发展目标至关重要。本研究通过研究氮化硼（BN）掺杂的水纳米流体作为一种先进的传热流体来解决这一挑战，与水相比，它有望提高热性能并节省能源。在水和纳米流体的瞬态条件下，对11型面板-对流器（PC）散热器进行了实验测试。在散热器入口温度为75°C时，确定了两种流体从散热器向房间散发的热量和空气侧传热系数。此外，还比较了两种流体在实验过程中的能量消耗。结果表明，纳米流体在17 min内达到室温，而水在27 min内达到室温。与水相比，空气侧传热系数平均提高了71%，而放热率提高了45%。bn -水纳米流体的使用在加热系统中节省了8.1%的总能源。bn -水纳米流体显著提高了散热器性能和整体系统能效。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.