Inquiry (采购产品): Solar 4 Heat Storage Tank We are building Solar 4, a Solar Concentrating Tower Plant of 10Mwe at Otjiwarongo, Namibia. This plant will be the first of its kind south of the Sahara, and we want it to run 24/7, using stored heat. Our plan is to adopt the CIEMAT developed solid state tank system using ceramic filler ( quartz gravel of 1cm size) to store the heat. We would like this tank to operate at as high a temperature range as possible. The air receiver is limited to 900C. During my days as a process engineer in the refining and steel industries, we always lined out hot zones with refractories, on the inside. Early versions of these thermal storage tanks for solar plants contained molten sodium salt and operated at temps below 600C. Our tank will contain superheated air and quartz gravel. Am I crazy, or wouldn't it be preferable to insulate this tank on the INSIDE, back filling the quartz against the refractory rather than against the steel tank wall, and insulating the hot zone using refractory rather than insulating the steel skin on the outside. We could easily tolerate heat losses on the order or 1% per day or even 5% if need be. Have you any suggestions for a schedule to insulate a tank 15m Dia by 10m tall? Could you estimate the cost of doing this tank? Could you estimate the likely skin temp of the steel given the tank is insulated on the INSIDE? Would you be interested in the job? Warmly, Dr. George **** Hidden Message ***** Dr. George W. Oprisko Oprisko none Company: Public Research Institute E-mail: goprisko@iway.na **** Hidden Message ***** goprisko@iway.na
