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Gannett’s Green Campaign. Gannett has a long history of Green efforts Individual and Local Efforts Corporate Green Committee in 2006 Individual Gannett newspapers have formalized Green Teams, Green web sites, and Initiatives. Corporate Office Building is a Green-Focused Design.
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Gannett has a long history of Green efforts Individual and Local Efforts Corporate Green Committee in 2006 Individual Gannett newspapers have formalized Green Teams, Green web sites, and Initiatives
Corporate Office Building is a Green-Focused Design Natural Lighting Green Roofs Energy Efficient Lighting, Power Systems, and HVAC Centrally Controlled Occupancy Settings Designed With LEEDS Standards
Two parallel approaches Green Committees and Teams Efforts that are behavioral No-cost changes to what we use or how we use items Newspaper Division Focus on energy savings/reductions Efforts that require capital
Capital Efforts Lighting Targeted high-ROI lighting changes first High bay HID or Metal Halide lights HVAC Systems at end-of-life Redesign for efficiency Correctly size for changed operations
Lighting Project Chose a company to partner with for focused effort at lighting energy savings That company managed and performed site audits Negotiated Gannett-wide discounts for lighting Each project was quoted as materials and turnkey, with detailed analysis of current energy costs, estimated energy, cost, and Carbon effects
Why focus on High Bay lighting? Limited capital available High Bay lighting was largest ROI Fast analysis Simplest Installation ***
Annual Contribution of Gannett Lighting Retrofit Project $1,400,000+ Savings in electrical cost 52% Overall ROI 14,000 tons CO2 Reduction 30 tons NOX Reduction
Large Newspaper Production and Office Facility $290k Project Whole House – Office and Production
Large Newspaper Production and Office Facility $290k Project 100% ROI
Large Newspaper Production and Office Facility $290k Project 100% ROI $97k Rebate check ******
Next emphasis for lighting Next tier of ROI relighting opportunities Controls
Need for accessible manual controls Occupancy controlled lighting Scheduled lighting
HVAC Energy Projects Typically Higher Capital Costs More Engineering Intensive Complex installation Larger disruptive impact on the facility
Focused End of life Major repairs needed Completely inoperable Very old, and/or no longer suited for current operations Production changed or removed from facility
Example: Very old, large steam boilers Facility is office only, no longer any production Steam operates heat, reheat, and domestic hot water Very cramped mechanical space Asbestos
Two new, much smaller steam boilers with 24:1 turn-down Separate domestic hot water system Energy savings: $180k/yr Nat Gas Project cost: $600k
HVAC Projects Scope Chillers Hot water heaters Boilers Replacing steam with hot water New, more energy efficient boilers
Why Steam?? Humidification Steam to Hot Water Heating Operating oversized steam boilers for humidity in off-heating periods Over Humidification
High Pressure Air Compressed Air Energy CostCompressed air is one of the most expensive uses of energy in a manufacturing plant. About eight horsepower of electricity is used to generate one horsepower of compressed air. MNTAP – University of Minnesota
80% of the energy used to make compressed air goes into heat.
Gannett has 15,000 hp of connected air compressors At full load, that would represent over $13M of electrical cost Actual costs in excess of $4M
Every 2psi of pressure reduction = 1.5% energy use reduction In this example, the low pressure is set at 130psi. The high pressure is set at 150psi Modulating at 130psi would save 15% in energy usage
Where and how are you using compressed air? Areas where lower pressure air would work just as well? Leaks? Open valves on idle equipment? “Inventive” uses?
20° F decrease in compressor inlet temperature = 3.5% energy savings
Resources DOE, CAGI, others operate a program called “Compressed Air Challenge”. Available in most of the country One day, very specific course in compressed air knowledge, energy specifics, diagnostics and remedies
Gannett continues to pursue reduction in energy use A recent task group identified and is in the process of reducing energy costs by an additional $4.4M in the next year. Additional 40tons CO2 reduction.