Experimental investigation on the cooling performance of a novel grooved radiant panel filled with heat transfer liquid

“…Previous studies also recommended that the radiant panel is suitable for hot and humid environment, similar to the weather conditions of the Yangtze River Basin of China. 38 Compared the performance of the hybrid GSHP system with the traditional HVAC system under real operation conditions, the hybrid GSHP system would require remarkably less energy as well as electricity and primary energy use with radiant terminals. [39][40] Overall, the hybrid GSHP system coupled with capillary radiant ceiling terminals would have a good potential for future wider applications in the Yangtze River Basin (hot summer and cold winter) regions in China or areas with similar weather conditions.…”

Section: Reciprocal Of Above Numbers Inverse Comparisonmentioning

confidence: 99%

Simulation of hybrid GSHP systems utilizing radiant ceiling terminal and system evaluation with analytic hierarchy process method

Xing

2020

Indoor and Built Environment

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Hybrid ground source heat pump (GSHP) systems which utilize capillary radiant ceiling are promising to provide a better building comfort while reducing energy consumption. We have developed a GSHP model and an analytic hierarchy process (AHP) method for evaluating the system feasibility. The hybrid GSHP system provides heating/cooling for an office in Wuhan, China. A conventional HVAC system – water chiller + gas boiler (WB) system was also simulated. The results showed that the hybrid system would provide a better indoor comfort and remains at the thermal comfort class I, and the hybrid system would incur a 14.5% lower cost but would provide 43.2% more energy saving. The hybrid GSHP system could reduce 20.23 tons of CO2 emission, while 1.39 tons more SO2, 0.39 tons more NOx and 9.70 tons more Ash emissions could be produced. Overall, the hybrid system performance evaluation result (SPER) was 0.966, and the WB system was 0.746. These SPERs were quantified system evaluation results calculated using the AHP method, which have considered the impacts of the various factors – economic cost, energy saving and environmental impact. The hybrid GSHP system is more adaptable than the WB system and has a good application prospect in this climate region.

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“…Sun et al [ 13 ] proposed a new type of flat heat pipe radiant heating and cooling integrated terminal and studied the thermal performance (including thermal response speed, heating and cooling capacity, heating and cooling temperature, and heat transfer coefficient) of the flat heat pipe terminal through experiments. Lv et al [ 14 ] developed a new type of heat sink, which consists of an upper flat plate, a lower groove plate, and a heat transfer liquid filling the gap between the two plates. Tang et al [ 15 ] carried out an experimental study on the droplet size from superhydrophobic surfaces and conventional aluminum alloy surfaces.…”

Section: Introductionmentioning

confidence: 99%

A New Type of Air Conditioning System Based on Finned Ceiling Radiant Coupled with Independent Fresh Air and Its Thermal Comfort Experimental Study

Qin

et al. 2022

Computational Intelligence and Neuroscience

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The traditional radiation air conditioning system has some problems, such as easy condensation, insufficient refrigeration capacity, complex structure, and control system. Therefore, this study proposes a new type of finned metal radiant plate with large heat flow per unit area, sufficient cooling capacity, and simplified heat exchange system, in order to realize large temperature difference between cooling and heating. The temperature field uniformity and thermal comfort test of a novel type of finned ceiling radiant panel and independent fresh air linked air conditioning system under summer cooling and winter heating circumstances are accomplished through artificially generated climate environments. The study's findings demonstrate that in the radiation and fresh air modes, the maximum interior temperature differential under cooling conditions does not rise over 2.1°C. The maximum temperature differential in the space at any one moment in the radiation and fresh air modes cannot be greater than 3°C when heating conditions are present. The fresh air's cooling and dehumidifying effects are clear. The dehumidification efficiency may reach 50%, and the moisture content ranges from 5.48 to 9.63 g/kg. With PMV ranging from −0.34 to 0.54, the enhanced air conditioning system in this research provides exceptionally good thermal comfort. Additionally, the finned radiant panel's installation area occupies just 14% of the ceiling, which is sufficient to fulfill the room's cooling and heating load needs as well as provide high thermal comfort and consistent indoor temperature. The theoretical investigation and practical implementation of the direct expansion radiant air conditioning system are both strongly supported by this research.

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Experimental investigation on the cooling performance of a novel grooved radiant panel filled with heat transfer liquid

Cited by 39 publications

References 17 publications

Performance analysis of the refrigerant-cooling radiant terminal: A numerical simulation

Performance analysis of the refrigerant-cooling radiant terminal: A numerical simulation

Simulation of hybrid GSHP systems utilizing radiant ceiling terminal and system evaluation with analytic hierarchy process method

A New Type of Air Conditioning System Based on Finned Ceiling Radiant Coupled with Independent Fresh Air and Its Thermal Comfort Experimental Study

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