Isolating High Pressure & Intermittent High Volume Uses

In many industrial plants, there will be one or more applications with an intermittent demand of relatively high volume. This can cause severe dynamic pressure fluctuations in the whole system, with some essential points-of-use being starved, impacting the quality of the end product. Usually, this can be relieved by the correct sizing and location of a secondary air receiver, preferably with metered recovery, close to the point of high intermittent demand. Other alternatives of dealing with such high pressure intermittent users would be to install a booster compressor for such users, or to have a dedicated compressor for such applications.  

Development Status Products
Commercial

Isolating High Pressure & Intermittent High Volume UsesCosts & Benefits

Parent Process: Compressed Air Systems
Energy Savings Potential

This measure is estimated to offer following improvement potentials:
• 5% for low efficiency base cases;
• 3% for medium efficiency base cases;
• 2% for high efficiency base cases.

Electrical and primary energy savings potential of this technology for different countries is estimated as following (UNIDO, 2010):

  Final (GWh/y) Primary (TJ/y)
US 573 6292
Canada 146 1818
EU 484 4548
Thailand 76 764
Vietnam 35 488
brazil 129 1438
CO2 Emission Reduction Potential

Total emisson reduction potential, as kt CO2/y for different countries are estimated as (UNIDO, 2010): 

US 346
Canada 72
EU 211
Thailand 39
Vietnam 17
brazil 19

Costs

Estimated typical capital costs of this measure for different system sizes (S) are:
• US $2000  for S < 37 kW;
• US $4000 for 37 kW < S < 75 kW;
• US $5500 for 75 kW < S < 150 kW;
• US $8500 for 150 kW < S < 375 kW;
• US $14000 for 375 kW < S < 745 kW; (UNIDO, 2010)

Cost of conserved energy, expressed as US $/MWh-saved, in different countries are estimated as following (UNIDO, 2010):

US 108.8
Canada 113.9
EU 129.1
Thailand 75.9
Vietnam 74.7
brazil 60

Parent Process:
Energy Savings Potential
CO2 Emission Reduction Potential

N/A

Costs

Isolating High Pressure & Intermittent High Volume Uses Publications

Page Number: 

52-63

Page Number: 

45