A novel concentric tube heat pipe exchanger was designed and expected to be utilized in integrated waste heat recovery equipment with higher heat transfer efficiency at lower temperature heat sources. The heat transfer performance of the novel heat pipe heat exchanger using acetone as working fluid was experimentally studied, It is found that the novel heat pipe heat exchanger has good isothermal performance and operation stability. The results showed that when the length of evaporator was 260 mm, the inclination angle was 60 degrees, the flow of cooling water was 0.5 m(3)/h, the cooling water temperature was 30 degrees C, the novel heat exchanger delivered a better heat transfer performance. The maximum heat transfer quantity is about 1600 W, and the average thermal resistance is 0.042 degrees C/W. (C) 2018 Elsevier Ltd. All rights reserved.