tag:blogger.com,1999:blog-5411465925897002085.post4938513777987048194..comments2023-04-13T13:46:15.092+02:00Comments on Full Duplex: Heavy Duty Energy BankingJon Richfieldhttp://www.blogger.com/profile/14166113190940745522noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5411465925897002085.post-76509069893207800542023-04-13T13:46:15.092+02:002023-04-13T13:46:15.092+02:00Hello MC,
Thanks for the comment.
It is a matter o...Hello MC,<br />Thanks for the comment.<br />It is a matter of engineering context. Note that the title is Heavy Duty Energy Banking, with the accent on the HD. (See also the companion piece on Heavier Duty Energy Banking).<br />Note too, that I have yet other essays on compressed-air energy storage and others. Their respective advantages are highly context-dependent, and in particular scale-dependent, time-dependent, and hazard dependent.<br />Compressed gas is hard to store indefinitely, hazardous in case of anything going wrong, wasteful unless you can manage to avoid the inefficiencies of compression, and so on.<br />And the difficulties, costs, and hazards tend to increase disproportionately with the scale.<br />The cylinders for suspension of masses by means of pumping relatively incompressible fluids increase less than linearly with scale, so that it is NOT medium of choice for small scales, but it becomes a lot more attractive on the Giganewton scale, which would amount to storage of a large, costly bomb if it were compressed gas. The pressures need not (should not) be maintained when power is not being drawn or added, because the weights would be held on detents, not by the walls and seals, so that power could be stored for years without loss.<br />In another essay I describe how compressed air could be stored in submarine tents, but again, it is a question of context, of location etc.<br />In engineering these are the sorts of variables that need attention in proper context.<br />For other contexts check out the essays on: <br />Stop Mucking With Geothermal, and<br />Energy Storage & Renewable Energy Sources.<br />The latter in particular deals with compressed air.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5411465925897002085.post-4361952188571422772023-04-13T12:19:31.079+02:002023-04-13T12:19:31.079+02:00How does the cost of such a device, being shown he...How does the cost of such a device, being shown here, compare to current less unconventional energy storage devices. Many years ago, I remember seeing a comparison for the most efficient energy storage to power a short-term lifting device (that included the store itself) was best solved with a high-pressure air cylinder. Supersonic wind-tunnels for short time operation also are most cheeply made using large compressed-air cylinders rather than high-power motor/fan drives. Macrocompassionhttps://www.blogger.com/profile/09852689411841500628noreply@blogger.com