1. Number of transfer units (NTU):
1. in air-cooled heat exchangers, 3.8.5-3 - 3.8.5-6
2. average value in nonuniform heat transfer in shell-and-tube heat exchangers, 2.1.4-1 - 2.1.4-3
3. as basis for design of plate heat exchangers 3.7.2-2
4. as basis for design of plate heat exchangers 3.7.2-3
5. in cooling of slab, 2.1.3-1 - 2.1.3-2
6. in cooling towers, 3.12.2-4 - 3.12.2-5
7. in heat exchangers, 1.2.4-3
8. in particle-to-fluid heat transfer in fluidized beds, 2.5.5-2 - 2.5.5-3
9. in transient heat transfer, definition, 2.1.2-2 - 2.1.3-7