Retrotec USACE - Manual (Page 103)

Energy Conservation Measures 81
TABLE 5. CAUSES OF ENERGY WASTE AND INEFFICIENCY IN COMPRESSED AIR SYSTEMS
Waste/ineffi ciency Reference/appendix
Running standby dryer Waste D4.3.1
Leaks at gaskets, fi ttings, and valves Waste D4.3.2
Dirty heat exchangers Waste D4.3.3
Dirty air fi lters Waste D4.3.4
Heated air warmer than 66 °C (150
°
F) exhausted outdoors Waste D4.3.5
Fouled air/oil separators Waste D4.3.6
Inoperable, uncalibrated, or poorly adjusted controls Ineffi ciency D4.3.7
System pressure greater than required by users Waste D4.3.8
Excessive energy use at part load conditions Ineffi ciency D4.3.9
Compressed air used for cooling, agitating liquids, moving
product, or drying Ineffi ciency D4.3.10
Providing compressed air to unused areas Waste D4.3.11
Use of oversized equipment Ineffi ciency D4.3.12
Use of warm building air for compressors air intake Ineffi ciency D4.3.13
Use of refrigerated air dryers Ineffi ciency D4.3.14
Use of modulation-controlled air compressors at part load Ineffi ciency D4.3.15
Lack of compressor system control system Ineffi ciency D4.3.16
1.3.4 Lighting System Considerations
Building and site lighting can be accomplished by several types of lighting lu-
minaires, each with their own cost and effi ciency. Both general/high level and
task lighting as shown in Figure 24 may be used in a building. Table 6 lists
problems associated with these systems that result in waste or ineffi ciency.