Page 71 - Boiler plant and distribution system optimization manual
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56 Boiler Plant and Distribution System Optimization Manual
Figure 6.4—ASME Heat Balance for steam generators.
The technique is to make a drawing of the rately
boiler surface dimensions and make grids of c. Does not locate energy losses
equal areas with the average measured heat loss
for each grid then adding up the losses for all the Heat Loss Method
surface grids. [See Figure 4.10] a. Indirect method (100% – energy losses)
b. Simple and accurate
c. locates and sets magnitude of energy
COMPARING METHODS FOR MEASURING losses and therefore is a key to efficiency
BOILER EFFICIENCY improvement efforts. d. Allows assess-
ment of potential efficiency improve-
Input-Output Method ments and energy savings.
a. Most direct method
b. Difficult and expensive to measure accu-
