Performance simulation and optimization of new radiant floor heating based on micro heat pipe array
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This paper proposes two new radiant floor heating structures based on micro heat pipe array (MHPA), namely cement-tile floor and keel-wood floor. The numerical models for these different floor structures are established and verified by experiments. The temperature distribution and heat transfer process of each part are comprehensively obtained, and the structure is optimized. The results show that the cement-tile floor has the better heat transfer performance of the two. When under the same inlet water temperature and flow rate, the keel-wood floor's surface temperature distribution is about 2 ℃ lower than that of the cement-tile floor. The inlet water temperature of cement-tile floor is about 10 ℃ lower than that of keel-wood structure when the floor surface temperature is the same. During a longitudinal heat transfer above MHPA, the floor surface temperature decreases by 0.5 ℃ for every 10 mm filling layer increase. In order to reduce the non-uniformity of the floor's surface temperature and improve the thermal comfort of the heated room, the optimal structure for a floor is given, with the maximum surface temperature difference reduced by 3.35 ℃. We used research focusing on new radiant floor heating, with advantages including high efficiency heat transfer, low water supply temperature, simple waterway structure, low resistance and leakage risk, to provide theory and data to support the application of an effective radiant floor heating based on MHPA.
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Performance simulation and optimization of new radiant floor heating based on micro heat pipe array
),
Abstract
This paper proposes two new radiant floor heating structures based on micro heat pipe array (MHPA), namely cement-tile floor and keel-wood floor. The numerical models for these different floor structures are established and verified by experiments. The temperature distribution and heat transfer process of each part are comprehensively obtained, and the structure is optimized. The results show that the cement-tile floor has the better heat transfer performance of the two. When under the same inlet water temperature and flow rate, the keel-wood floor's surface temperature distribution is about 2 ℃ lower than that of the cement-tile floor. The inlet water temperature of cement-tile floor is about 10 ℃ lower than that of keel-wood structure when the floor surface temperature is the same. During a longitudinal heat transfer above MHPA, the floor surface temperature decreases by 0.5 ℃ for every 10 mm filling layer increase. In order to reduce the non-uniformity of the floor's surface temperature and improve the thermal comfort of the heated room, the optimal structure for a floor is given, with the maximum surface temperature difference reduced by 3.35 ℃. We used research focusing on new radiant floor heating, with advantages including high efficiency heat transfer, low water supply temperature, simple waterway structure, low resistance and leakage risk, to provide theory and data to support the application of an effective radiant floor heating based on MHPA.
References(27)
Dong RX, Quan ZH, Zhao YH, et al. (2018). Experimental study on the performance of radiant floor heating system based on micro heat pipe arrays. Building Science, 2018(8): 32–36. (in Chinese)
Flores Larsen S, Filippín C, Lesino G (2010). Transient simulation of a storage floor with a heating/cooling parallel pipe system. Building Simulation, 3: 105–115.
Joe J, Karava P (2019). A model predictive control strategy to optimize the performance of radiant floor heating and cooling systems in office buildings. Applied Energy, 245: 65–77.
Karabay H, Arıcı M, Sandık M (2013). A numerical investigation of fluid flow and heat transfer inside a room for floor heating and wall heating systems. Energy and Buildings, 67: 471–478.
Kim JS, Im YB, Kim YS (2003). Development of the under-floor heating system using oscillating capillary tube heat pipe. Journal of the Japan Association for Heat Pipes, 21(4): 49–65.
Kim JS, Kwon YH, et al. (2014). Development of high performance bubble jet loop heat pipe for hot water floor heating system. Journal of the Korea Society for Power System Engineering, 18: 23–28.
Larwa B, Cesari S, Bottarelli M (2021). Study on thermal performance of a PCM enhanced hydronic radiant floor heating system. Energy, 225: 120245.
Li Q, Chen C, Zhang Y, et al. (2014). Analytical solution for heat transfer in a multilayer floor of a radiant floor system. Building Simulation, 7: 207–216.
Liang L, Zhao Y, Diao Y, et al. (2021). Inclined U-shaped flat microheat pipe array configuration for cooling and heating lithium-ion battery modules in electric vehicles. Energy, 235: 121433.
Ma H, Li C, Lu W, et al. (2016). Experimental study of a multi-energy complementary heating system based on a solar-groundwater heat pump unit. Applied Thermal Engineering, 109: 718–726.
Merabtine A, Mokraoui S, Kheiri A, Dars A (2019). New transient simplified model for radiant heating slab surface temperature and heat transfer rate calculation. Building Simulation, 12: 441–452.
Mohammadzadeh A, Kavgic M (2020). Multivariable optimization of PCM-enhanced radiant floor of a highly glazed study room in cold climates. Building Simulation, 13: 559–574.
Ren J, Zhu L, Wang Y, et al. (2010). Very low temperature radiant heating/cooling indoor end system for efficient use of renewable energies. Solar Energy, 84: 1072–1083.
Sattari S, Farhanieh B (2006). A parametric study on radiant floor heating system performance. Renewable Energy, 31: 1617–1626.
Shin MS, Rhee KN, Ryu SR, et al. (2015). Design of radiant floor heating panel in view of floor surface temperatures. Building and Environment, 92: 559–577.
Tahersima M, Tikalsky P (2018). Experimental and numerical study on heating performance of the mass and thin concrete radiant floors with ground source systems. Construction and Building Materials, 178: 360–371.
Wang T, Diao Y, Zhu T, et al. (2017). Thermal performance of solar air collection-storage system with phase change material based on flat micro-heat pipe arrays. Energy Conversion and Management, 142: 230–243.
Wang L, Zhao Y, Quan Z, et al. (2021). Investigation of thermal management of lithium-ion battery based on micro heat pipe array. Journal of Energy Storage, 39: 102624.
Ye X, Zhao Y, Quan Z (2018). Thermal management system of lithium-ion battery module based on micro heat pipe array. International Journal of Energy Research, 42: 648–655.
Zhang D, Cai N, Wang Z (2013). Experimental and numerical analysis of lightweight radiant floor heating system. Energy and Buildings, 61: 260–266.
Zhou G, He J (2015). Thermal performance of a radiant floor heating system with different heat storage materials and heating pipes. Applied Energy, 138: 648–660.
Zhu T, Diao Y, Zhao Y, et al. (2015). Experimental study on the thermal performance and pressure drop of a solar air collector based on flat micro-heat pipe arrays. Energy Conversion and Management, 94: 447–457.
Zhu T, Diao Y, Zhao Y, et al. (2016). Thermal performance of a new CPC solar air collector with flat micro-heat pipe arrays. Applied Thermal Engineering, 98: 1201–1213.
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Acknowledgements
The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (No. 51778010), "Optimization design method of BIPV/T and solar heat pump coupled energy supply system".
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