1. Complete one of the following projects involving methods for storing electricity considered thus far in this book (see Secs. 2.7, 4.8.3). Report your findings in a report providing a full rationale together with supporting documentation.
(a) For each storage method, identify its principal sources of exergy destruction and develop an exergetic efficiency for it. Use principles of this chapter with assistance from the technical literature as required.
(b) From these storage methods, identify a subset of them well suited for storage duty associated with a 300-MW wind farm. On the basis of cost and other pertinent factors for such duty, place the subset in rank order.