TY - JOUR
T1 - Experimental study on the performance of plane fin-tube heat exchanger made of different materials
AU - Zhang, Fan
AU - Li, Zhaohui
AU - Li, Xiaoyu
AU - Ding, Jing
AU - Chen, Lei
AU - Tao, Wenquan
N1 - Publisher Copyright:
©, 2015, Xi'an Jiaotong University. All right reserved.
PY - 2015/5/10
Y1 - 2015/5/10
N2 - In the current research of fin-tube heat exchanger, thermal contact resistance is rarely considered, or it is included in the air side heat transfer resistance. In this paper, the influence of materials of tubes and fins on the thermal contact resistance is studied. The heat transfer performance of four fin-tube heat exchangers made of different materials is investigated experimentally, and the general correlations of heat transfer and pressure drop characteristics are obtained in the Reynolds number range commonly encountered in engineering. It is found that in the Reynolds number range of 1 300-4 500, the Nusselt number of air across the copper-nickel-iron alloy tube-aluminum fins is 28%-40% greater than that of 304 stainless steel tube-aluminum fins. For the same manufacturing technology and fin material, the thermal contact resistance of pipes made of 304 stainless steel is 4.53×10-3 m2·K·W-1 more than that of copper-nickel-iron alloy. The measurement uncertainty of this experiment is 7.28%, and the thermal contact resistance is reliable, which can be used in engineering design.
AB - In the current research of fin-tube heat exchanger, thermal contact resistance is rarely considered, or it is included in the air side heat transfer resistance. In this paper, the influence of materials of tubes and fins on the thermal contact resistance is studied. The heat transfer performance of four fin-tube heat exchangers made of different materials is investigated experimentally, and the general correlations of heat transfer and pressure drop characteristics are obtained in the Reynolds number range commonly encountered in engineering. It is found that in the Reynolds number range of 1 300-4 500, the Nusselt number of air across the copper-nickel-iron alloy tube-aluminum fins is 28%-40% greater than that of 304 stainless steel tube-aluminum fins. For the same manufacturing technology and fin material, the thermal contact resistance of pipes made of 304 stainless steel is 4.53×10-3 m2·K·W-1 more than that of copper-nickel-iron alloy. The measurement uncertainty of this experiment is 7.28%, and the thermal contact resistance is reliable, which can be used in engineering design.
KW - Fin-tube heat exchanger
KW - Heat transfer and pressure drop characteristics
KW - Thermal contact resistance
UR - https://www.scopus.com/pages/publications/84941798216
U2 - 10.7652/xjtuxb201505010
DO - 10.7652/xjtuxb201505010
M3 - 文章
AN - SCOPUS:84941798216
SN - 0253-987X
VL - 49
SP - 62
EP - 67
JO - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
JF - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
IS - 5
ER -