具有相变的三介质换热器的分析

doi:10.16085/j.issn.1000-6613.2020-2445

摘要/Abstract

摘要：

具有混合能源的暖通空调与制冷（heating, ventilation, air conditioning & refrigerating, HVAC&R）系统通常需要在3种或多种流体之间传递热量。三介质换热器能满足多流体换热需求，在该领域具有应用前景，其优化具有重要意义。对于具有相变的三介质换热器，现有的热阻定义不能很好地发挥作用，而最新提出的理论提供了另一种方法。本文采用分布参数法建立了翅片管三介质换热器的仿真模型，并用实验结果进行了验证。此外，还推导了三介质换热器中基于耗散的的热阻。根据传热量和理论，分析了不同结构和空气流量下的三介质换热器的换热性能。结果表明，采用基于耗散的热阻作为评价标准与采用传热量为评价标准相比，改变管路排布方式获得的优化结果不同，改变管径或风量获得的优化结果相同。以基于耗散的热阻为标准，考虑不同流体侧之间的传热和压降的匹配，以获得最佳的管路排布方式。本文的实验结果有利于制冷空调系统中三介质换热器的优化以及理论新应用领域的拓展。

关键词: 三介质换热器, 优化, 传热, 相变

Abstract:

HVAC&R(heating, ventilation, air conditioning & refrigerating) systems with hybrid energy sources need to transfer heat among three or more fluids. Three-fluid heat exchanger has application potential in this field and its optimization shows great significance. For three-fluid heat exchangers with phase change, existing definition of thermal resistance does not work well while the recent developed entransy theory offers an alternative way. In this paper, a fin-tube three-fluid heat exchanger is simulated with distributed parameter method and validated by experimental results. Entransy-dissipation-based thermal resistance for three-fluid heat exchanger with phase change is derived. The performance of different structures and air flow rate is analyzed on the basis of both heat transfer rate and entransy theory. The results show that using entransy-dissipation-based thermal resistance as the criterion achieves different results with maximizing heat transfer rate when circuit arrangement type is varied, while same results when tube diameter or air flow rate is varied. Optimal circuit arrangement is obtained by using entransy-dissipation-based thermal resistance as criterion, which can take heat transfer matching between different sides and pressure drop into consideration. This paper provides useful results on the optimization of three-fluid heat exchangers in HVAC&R systems and a new application field of entransy theory.

Key words: three-fluid heat exchanger, entransy, optimization, heat transfer, phase change

中图分类号:

TK172

张海南, 丁京, 邵双全, 田长青. 具有相变的三介质换热器的分析[J]. 化工进展, 2021, 40(S1): 43-49.

ZHANG Hainan, DING Jing, SHAO Shuangquan, TIAN Changqing. Entransy analysis on a three-fluid heat exchanger with phase change[J]. Chemical Industry and Engineering Progress, 2021, 40(S1): 43-49.

图/表 9

参考文献 31

1	SHAHRESTANI M, YAO R M, COOK G K. A fuzzy multiple attribute decision making tool for HVAC&R systems selection with considering the future probabilistic climate changes and electricity decarbonisation plans in the UK[J]. Energy and Buildings, 2018, 159: 398-418.
2	PÉREZ-LOMBARD L, ORTIZ J, POUTB C. A review on buildings energy consumption information[J]. Energy and Buildings, 2008, 40(3): 394-398.
3	KIM T, CHOI B I, HAN Y S, et al. A comparative investigation of solar-assisted heat pumps with solar thermal collectors for a hot water supply system[J]. Energy Conversion and Management, 2018, 172: 472-484.
4	LIU Z J, LI Y W, XU W, et al. Performance and feasibility study of hybrid ground source heat pump system assisted with cooling tower for one office building based on one Shanghai case[J]. Energy,2019,173(15): 28-37.
5	TINTI F, BARBARESI A, TORREGGIANI D, et al. Evaluation of efficiency of hybrid geothermal basket/air heat pump on a case study winery based on experimental data[J]. Energy and Buildings,2017,151(15): 365-380.
6	方雷,李舒宏,许成城. 复合热源热泵集热/蒸发器的结构优化模拟[J]. 中南大学学报(自然科学版), 2020, 51(4): 1125-1134.
	FANG Lei, LI Shuhong, XU Chengcheng. Structural optimization simulation of collector/evaporator for hybrid heat source heat pump[J]. Journal of Central South University(Science and Technology), 2020, 51(4): 1125-1134.
7	ZHANG H N, SHAO S Q, TIAN C Q, et al. A review on thermosyphon and its integrated system with vapor compression for free cooling of data centers[J]. Renewable and Sustainable Energy Reviews,2018,81(1): 789-798.
8	WANG Z Y, ZHANG X T, LI Z, et al. Analysis on energy efficiency of an integrated heat pipe system in data centers[J]. Applied Thermal Engineering, 2015, 90: 937-944.
9	ZHANG W J, SHAO S Q, ZHANG H N, et al. Numerical Investigation on three-fluid heat exchanger for hybrid Energy source heat pumps[J]. Energy Procedia, 2017, 105: 1692-1699.
10	MOHAPATRA T, SAHOO S S, PADHI B N. Analysis, prediction and multi-response optimization of heat transfer characteristics of a three fluid heat exchanger using response surface methodology and desirability function approach[J]. Applied Thermal Engineering, 2019, 151: 536-555.
11	VEERABHADRAPPA K, SEETHARAMU K N, HEGDE P G. Effect of ambient heat-in-leak on transient behaviour of three-fluid heat exchanger with two thermal communications using finite element method[J]. Materials Today: Proceedings, 2017, 4(9): 10596-10602.
12	SAEID N H, SEETHARAMU K N. Finite element analysis for co-current and counter-current parallel flow three‐fluid heat exchanger[J]. International Journal of Numerical Methods for Heat & Fluid Flow, 2006,16(3): 324-337.
13	VEERABHADRAPPA K, VINAYAKARADDY G, SEETHARAMU K N, et al. Transient behavior of three-fluid heat exchanger with three thermal communications under step change in inlet temperature of fluids using finite element method[J]. Applied Thermal Engineering, 2016, 108: 1390-1400.
14	YUAN P. Effect of inlet flow maldistribution on the thermal performance of a three-fluid crossflow heat exchanger[J]. International Journal of Heat and Mass Transfer, 2003, 46(20): 3777-3787.
15	MOHAPATRA T, PADHI B N, SAHOO S S. Experimental investigation of convective heat transfer in an inserted coiled tube type three fluid heat exchanger[J]. Applied Thermal Engineering, 2017, 117: 297-307.
16	MOHAPATRA T, PADHI B N, SAHOO S S, et al. Performance analysis of three fluid heat exchanger used in solar flat plate collector system[J]. Energy Procedia, 2017, 109: 322-330.
17	ZHANG H N, SHAO S Q, XU H B, et al. Numerical investigation on fin-tube three-fluid heat exchanger for hybrid source HVAC&R systems[J]. Applied Thermal Engineering, 2016, 95: 157-164.
18	CHEN Q, YANG K D, WANG M R, et al. A new approach to analysis and optimization of evaporative cooling system I: theory[J]. Energy, 2010, 35(6): 2448-2454.
19	GUO Z Y, ZHU H Y, LIANG X G. Entransy—A physical quantity describing heat transfer ability[J]. International Journal of Heat and Mass Transfer, 2007, 50(13/14): 2545-2556.
20	GUO Z Y, CHENG X G, XIA Z Z. Least dissipation principle of heat transport potential capacity and its application in heat conduction optimization[J]. Chinese Science Bulletin, 2003, 48(4): 406-410.
21	GUO Z Y, LIU X B, TAO W Q, et al. Effectiveness-thermal resistance method for heat exchanger design and analysis[J]. International Journal of Heat and Mass Transfer, 2010, 53(13/14): 2877-2884.
22	WANG X Y, ZHAO X L, FU L. Entransy analysis of secondary network flow distribution in absorption heat exchanger[J]. Energy, 2018, 147: 428-439.
23	CHENG X T, LIANG X G. Analyses of coupled steady heat transfer processes with entropy generation minimization and entransy theory[J]. International Journal of Heat and Mass Transfer, 2018, 127: 1092-1098.
24	冯园丽，夏力，项曙光. 基于熵分析法和分析法的换热网络适应性比较[J]. 化工进展，2017, 36(10): 3657-3664.
	FENG Yuanli, XIA Li, XIANG Shuguang. Comparative study on heat exchanger network adaptability based on entropy analysis and entransy analysis[J]. Chemical Industry and Engineering Progress,2017,36(10): 3657-3664.
25	TIAN H, LIANG H, LI Z. An entransy based method for thermal analysis and management of high heat density data centers[J]. International Journal of Heat and Mass Transfer, 2018, 127: 1025-1039.
26	FENG H J, CHEN L E, XIE Z H, et al. Constructal entransy dissipation rate minimization for variable cross-section insulation layer of the steel rolling reheating furnace wall[J]. International Communications in Heat and Mass Transfer, 2014, 52: 26-32.
27	CHEN L E, XIAO Q H, XIE Z H, et al. T-shaped assembly of fins with constructal entransy dissipation rate minimization[J]. International Communications in Heat and Mass Transfer, 2012, 39(10): 1556-1562.
28	GUO J F, XU M T. The application of entransy dissipation theory in optimization design of heat exchanger[J]. Applied Thermal Engineering, 2012, 36: 227-235.
29	CHENG X T, ZHANG Q Z, LIANG X G. Analyses of entransy dissipation, entropy generation and entransy-dissipation-based thermal esistance on heat exchanger optimization[J]. Applied Thermal Engineering, 2012, 38: 31-39.
30	ZHANG H N, SHAO S Q, JIN T X, et al. Numerical investigation of a CO₂ loop thermosyphon in an integrated air conditioning system for free cooling of data centers[J]. Applied Thermal Engineering, 2017, 126: 1134-1140.
31	QIAN S X, HUANG L, AUTE V, et al. Applicability of entransy dissipation based thermal resistance for design optimization of two-phase heat exchangers[J]. Applied Thermal Engineering, 2013, 55(1/2): 140-148.

几何参数	值	入口条件	参数
管长/mm	700	冷流体1焓值/kJ·kg^-1	211.69
内管外径/mm	6.5	冷流体1压强/MPa	0.6779
内管壁厚/mm	0.25	冷流体1质量流率/kg·s^-1	0.01988
外管外径/mm	9.52	冷流体2（空气）干球温度/℃	17.00
外管壁厚/mm	0.26	冷流体2（空气）湿球温度/℃	11.33
管回路数	28	冷流体2（空气）体积流率/m³·s^-1	1.224
排数	2	热流体焓值/kJ·kg^-1	392.26
管间距/mm	25.0	热流体压强/MPa	0.8688
排间距/mm	21.65	热流体质量流率/kg·s^-1	0.0294
翅片间距/mm	1.5	冷流体1和热流体种类	R22
翅片厚度/mm	0.12

几何参数	值	入口条件	参数
管长/mm	700	冷流体1焓值/kJ·kg^-1	211.69
内管外径/mm	6.5	冷流体1压强/MPa	0.6779
内管壁厚/mm	0.25	冷流体1质量流率/kg·s^-1	0.01988
外管外径/mm	9.52	冷流体2（空气）干球温度/℃	17.00
外管壁厚/mm	0.26	冷流体2（空气）湿球温度/℃	11.33
管回路数	28	冷流体2（空气）体积流率/m³·s^-1	1.224
排数	2	热流体焓值/kJ·kg^-1	392.26
管间距/mm	25.0	热流体压强/MPa	0.8688
排间距/mm	21.65	热流体质量流率/kg·s^-1	0.0294
翅片间距/mm	1.5	冷流体1和热流体种类	R22
翅片厚度/mm	0.12

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