tailieunhanh - Ele ctricity Use d by Office Equipment and Netw ork Equipment in the U.S.: Detailed Report and A ppendices

This is the first field study in which we analyzed the effect of computer power state on monitor power state. Only 6% of desktop computers in this study of commercial buildings were found in low power, and only 53% of those that were on successfully initiated power management in monitors. Computers in homes (where fewer are networked) may have higher enabling rates, but we have no data from residences. Clearly there is significant room for improvement in power management of computers, and more data are needed. | LBNL-45917 Electricity Used by Office Equipment and Network Equipment in the . Detailed Report and Appendices Kaoru Kawamoto Jonathan G. Koomey Bruce Nordman Richard E . Brown Mary Ann Piette Michael Ting and Alan K. Meier Energy Analysis Department Environmental Energy Technologies Division Ernest Orlando Lawrence Berkeley National Laboratory University of California Berkeley CA 94720 To download this report associated data and related research go to http enduse. Projects InfoTech. html February 2001 This work was supported by the Office of Atmospheric Programs of the . Environmental Protection Agency. Prepared for the . Department of Energy under Contract No. DE-AC03-76SF00098. Table of Contents Results and Conclusions and Future Appendix I. Office Equipment .15 Appendix II. Network Equipment .44 Appendix .