"Effects of viscous dissipation on the heat transfer in forced pipe flow. Part 1: Both hydrodynamically and thermally fully developed flow [Energy Conv. Manage. 2005; 46; 757-769] and Part 2: Thermally developing flow [Energy Conv. Manage. 2005; 3091-3102]" by Orhan Aydin Reply to "Comments on the above referenced articles" by D.A. Nield, K. Hooman