中文摘要：

采用热管换热器回收燃气热水器烟气余热（显热、潜热），对热管换热器设计计算方法、换热量的理论计算方法进行探讨。结合试验方法，利用热管换热器回收家用燃气热水器烟气显热、潜热，考察不同工况下热管换热器理论换热量与实测换热量。在试验中回收到了凝结水，说明设计的热管换热器具备同时回收烟气显热和潜热的能力。由于蒸发段翅片间残留凝结水，影响了换热效果，使得实测显热、潜热换热量小于理论换热量。在后续的研究中，可以通过优化翅片结构等方式，减少凝结水的残留，进一步提高热管换热器的换热能力。

英文摘要：

The flue gas waste heat （sensible heat and latent heat） from gas water heater is recovered by using heat pipe heat exchanger. The design calculation method of heat pipe heat exchanger and the theoretical calculation method of heat exchange are discussed. Comhined with experimental method, the sensible heat and latent heat of flue gas from domestic gas water heater are recovered hy using heat pipe heat exchanger. The theoretical heat exchange and actual heat exchange of heat pipe heat exchanger under different working conditions are investigated. The condensate is recovered during the test, indicating that the designed heat pipe exchanger has the ability to recover the sensible heat and latent heat of the flue gas simultaneously. Because the condensate between the fins of the conden- sation section affects the heat transfer effect, the actual heat exchange of the sensible heat and latent heat is less than the theoretical heat exchange. In the subsequent research, the residual of the condensate can be reduced by optimizing the fin structure and so on, and the heat transfer capability of the heat pipe heat exchanger can be further improved.