Energy and Demand Saving With Engine-driven Air Compressors

Energy and demand cost saving using an engine-driven air compressor are determined based on average utility rates for four different regions of the country. Net heat recovery cost saving from an engine-driven air compressor is also investigated in this article.

An engine-driven air compressor can be used to realize cost saving with an acceptable playback in the Northeast US and in some instances the Shoutheast an Midwest. Based on average utility prices in the West, an engine-driven air compressor will not present an acceptable payback period.

Producing compressed air can be a significant precentage of the electrical energy cost for industrial facilities as compressed air plays a key role in many production processes. Since most industrial facilities are driven by the economics of production, there is a constant search for methods to reduce porating and production cost.

The installation of a natural gas engine-driven air compressor can significantly reduce the energy cost associated with production by decreasing electrical peak demand and by utilizing a cheaper energy source. Facilities that are slaved to the use of compressed air for operating production equipment and are located in regions with elevated demand const or high electrical energy rates are exellent candidates for engine-driven air compressors.

Maintenance Cost of an Electric Air Compressor

Maintenance of an electric air compressor usually includes the changing of air filters and compressor oil. Air filters are usually changed monthly, while oil changes depend upon the type of oilt htat is used and the operating hours. Labor costassociated with the filter and oil changes are considered to be negligible in comparison to the oprating costs. Maintenance of electric air compressors is generally considered as part of the regular maintanance of a facility and does not present an addintional financial burden.

{source : User's guide to natural gas technologies by F. William Payne}