Comments on: 10MW Tower http://www.landartgenerator.org/blagi/archives/640 Tue, 03 Jan 2012 00:18:12 +0000 http://wordpress.org/?v= hourly 1 By: admin http://www.landartgenerator.org/blagi/archives/640/comment-page-1#comment-1372 admin Tue, 16 Mar 2010 16:29:15 +0000 http://www.landartgenerator.org/blagi/?p=640#comment-1372 Thanks Jacob. The 130,000m2 number is used to calculate the embodied energy. It is the gross built up area. The net area that would draw the demand load would be smaller. Assuming a Net to Gross ratio of .80, the number would be 104,000m2, or 20,000,000 KWh/104,000m2 / 10 = 20 kWh/m2/year. Still very low, but it's an aspiration while the building is still a conceptual design. It's a number that a passively designed building with highly efficient LED task and day lighting running with BMS and with cooling assisted by the solar updraft mechanism and operable windows could achieve. There is no heating requirement and if designed well, the AC cooling period could be reduced to less than 5 months out of the year and run only during the mid-day and afternoon hours. Let me know if you still think it's beyond aspirational... Thanks Jacob. The 130,000m2 number is used to calculate the embodied energy. It is the gross built up area. The net area that would draw the demand load would be smaller. Assuming a Net to Gross ratio of .80, the number would be 104,000m2, or 20,000,000 KWh/104,000m2 / 10 = 20 kWh/m2/year. Still very low, but it’s an aspiration while the building is still a conceptual design. It’s a number that a passively designed building with highly efficient LED task and day lighting running with BMS and with cooling assisted by the solar updraft mechanism and operable windows could achieve. There is no heating requirement and if designed well, the AC cooling period could be reduced to less than 5 months out of the year and run only during the mid-day and afternoon hours. Let me know if you still think it’s beyond aspirational…

]]> By: Jacob http://www.landartgenerator.org/blagi/archives/640/comment-page-1#comment-1371 Jacob Tue, 16 Mar 2010 15:35:48 +0000 http://www.landartgenerator.org/blagi/?p=640#comment-1371 To quote from the article "The yearly output then of the building will be approximately 20,000MWh." "By producing more than 10 times the amount of energy than its own demand load it is able to contribute significantly to the power load demand of the surrounding neighborhood." Since the floor area is 130,000m2. that means your estimate of the energy demand of the building is 20,000MWh/130,000m2 / 10 = 15 kWh/m2/year ? That seems unbelievably low ? To quote from the article “The yearly output then of the building will be approximately 20,000MWh.” “By producing more than 10 times the amount of energy than its own demand load it is able to contribute significantly to the power load demand of the surrounding neighborhood.”

Since the floor area is 130,000m2. that means your estimate of the energy demand of the building is 20,000MWh/130,000m2 / 10 = 15 kWh/m2/year ? That seems unbelievably low ?

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