Assessment of the Market for Compressed Air Efficiency Services

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THE DEMAND SIDE OF THE MARKETOf those interviewed who purchased energy efficiency services, almostone-half did so because they believed they would save a substantialamount of energy. Other reasons cited include improved production control,improved production efficiency, the reputation of the vendor, and a lack ofstaff time. Among the reasons for not purchasing efficiency services, themost frequently mentioned were that it was too costly or because it couldbe performed by in-house staff (See Table 2-18).Of those customers who were not approached to purchase energyefficiency services, 58% reported that they would be interested insuch services. Among customers who were not interested in theseservices, the most common reason for their lack of interest was theirability to perform the services in-house (32%) or the small size of theirsystems (39%).Training. Slightly over one-quarter of all customers reported that someonein their staff had been trained in compressed air system efficiency.In roughly half of these instances, their compressed air equipment vendorhad sponsored the training. Only 6% of all customers were aware of theCompressed Air Challenge ® program. The key finding from this seriesof questions reveals that operators of 75% of the systems had had noformal training.Compressed Air System Efficiency Studies. Almost 20% of allcustomers reported undertaking energy-efficiency studies of theircompressed air systems over the past 7 years. 3 For those establishmentsthat did undertake efficiency studies, most used a specializedcompressed air system consultant (37%) or an equipment vendor(24%) to perform the study (See Table 2-19).There is no uniform set of procedures or protocols for conducting compressedair system efficiency study. There are a number of computerizedstudy programs currently available which call for extensive measurementsof compressor power and operating parameters under various loadconditions. Other protocols are somewhat less rigorous. Many consultantshave developed their own procedures that they modify to meet theparticular requirements of the site. Table 2-20 lists the activities includedin these system studies. While most contained the full complement oftechnical assessments, it is interesting to note that fewer than half of thestudies estimated cost and energy savings for the recommended measures.This information is often necessary to motivate customers to implementrecommendations.Twenty-five of the 38 establishments (66%) that undertook an efficiencystudy reported that they implemented measures recommended in thosestudies. Twelve of these companies reported implementing two or moremeasures. A variety of efficiency measures were implemented due to theefficiency study (See Table 2-21). Among those 13 customers who hadnot implemented any measures, 7 reported that their study was not yetcomplete. A number of these customers reported that they intended toimplement the recommended measures.Fifty-eight percent ofcustomers who werenot approached topurchase energyefficiency servicesreported that theywould be interestedin purchasing suchservices.Twenty-five of the38 establishments(66%) that undertookan efficiency studyreported that theyimplementedmeasuresrecommendedin those studies.3 The relevant question read: “Have you undertaken or contracted for a study of how to make your compressed air system as a wholemore energy efficient?”U.S. DEPARTMENT OF ENERGY27
Compressed Air Market AssessmentTABLE 2-20: Activities Included in the Efficiency StudyPercent of Those whoCompressed Air Efficiency Study ServicesHad System StudyEstimate of compressed air system energy use 79%Recommendations for improvements 74%Assessment of auxiliary equipment such asdryers and separators 68%Load profile based on system measurements 63%Estimation of losses due to leaks 63%Assessment of control system and alternate strategies 63%Identification of inappropriate uses of compressed air 61%Assessment of the distribution system for pressuredrops and efficiency 61%Assessment of air storage capacity 61%Estimates of costs and energy savings forrecommended measures 47%Number of customers 38TABLE 2-21: Measures Implemented from Efficiency StudyPercent of Those whoMeasuresImplemented MeasuresImprovements to system auxiliaries 40%Changes to piping, distribution system 40%Leak reduction 32%Added air storage capacity 28%Changes to compressor controls 24%Reduced unnecessary compressed air uses 16%Installed heat-recovery equipment 16%Number of customers 25Barriers to the Purchase of Compressed AirSystem Efficiency Services28U.S. DEPARTMENT OF ENERGYThe compressed air system efficiency consultants interviewed for thisreport repeatedly stressed that the major barrier to increased demandfor compressed air efficiency services is lack of customer understandingof potential benefits: energy savings and improved control overproduction processes.
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Page 4 and 5: TABLE OF CONTENTSEXECUTIVE SUMMARYO
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