Groundbreaking Energy Efficiency Retrofit Project at Empire State Building

From PR Newswire : With an initial estimated project cost of $20 million, additional savings and redirection of expenditures originally planned in the building's upgrade program, and additional alternative spending in tenant installations, the Empire State Building will save $4.4 million in annual energy savings costs, reduce its energy consumption by close to 40%, repay its net extra cost in about three years, and cut its overall carbon output through eight key initiatives, including: 1. Window Light Retrofit : Refurbishment of approximately 6,500 thermopane glass windows, using existing glass and sashes to create triple-glazed insulated panels with new components that dramatically reduce both summer heat load and winter heat loss. 2. Radiator Insulation Retrofit : Added insulation behind radiators to reduce heat loss and more efficiently heat the building perimeter. 3. Tenant Lighting, Daylighting and Plug Upgrades: Introduction of improved lighting designs, daylighting controls, and plug load occupancy sensors in common areas and tenant spaces to reduce electricity costs and cooling loads. 4. Air Handler Replacements : Replacement of air handling units with variable frequency drive fans to allow increased energy efficiency in operation while improving comfort for individual tenants. 5. Chiller Plant Retrofit: Reuse of existing chiller shells while removing and replacing "guts" to improve chiller efficiency and controllability, including the introduction of variable frequency drives. 6. Whole-Building Control System Upgrade : Upgrade of existing building control system to optimize HVAC operation as well as provide more detailed sub-metering information. 7. Ventilation Control Upgrade: Introduction of demand control ventilation in occupied spaces to improve air quality and reduce energy required to condition outside air. 8. Tenant Energy Management Systems : Introduction of individualized, web-based power usage systems for each tenant to allow more efficient management of power usage. -- Nathan Shetterley ( nathan.shetterley@gmail.com ) EVO Director of New Media del.icio.us Tags: Energy Efficiency , Retrofit

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Groundbreaking Energy Efficiency Retrofit Project at Empire State Building is an episode from The EVO Blog by Nathan Shetterley.

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This episode was published on Apr 7, 2009.

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