IBM z13s Technical Manual page 406

Heat released by configurations
Table 10-6 shows the typical heat that is released by the various zBX solution configurations.
Table 10-6 IBM zBX power consumption and heat output
Number of blades
7
14
28
42
56
70
84
98
112
Optional Rear Door Heat eXchanger (FC 0540)
For data centers that have limited cooling capacity, using the Rear Door Heat eXchanger
(Figure 10-4 on page 379) is a more cost-effective solution than adding another air
conditioning unit.
Tip: The Rear Door Heat eXchanger is not a requirement for BladeCenter cooling. It is a
solution for customers who cannot upgrade a data center's air conditioning units due to
space, budget, or other constraints.
The Rear Door Heat eXchanger has the following features:
A water-cooled heat exchanger door is designed to dissipate heat that is generated from
the back of the computer systems before it enters the room.
An easy-to-mount rear door design attaches to customer-supplied water by using
industry-standard fittings and couplings.
Up to 50,000 BTUs (or approximately 15 kW) of heat can be removed from the air exiting
the back of a zBX rack.
Note: The Rear Door Heat eXchanger feature has been withdrawn from marketing and
cannot be ordered if not already present on the zBX Model 004.
378
IBM z13s Technical Guide
Maximum utility power (kW)
7.3
12.1
21.7
31.3
40.9
50.5
60.1
69.7
79.3
Heat output (kBTU/hour)
24.82
41.14
73.78
106.42
139.06
171.70
204.34
236.98
269.62