Sent: Friday, February 07, 2014 5:22 PM To: commercial_packaged_boilers Subject: DOE Requests Information for Commercia l Packaged Boiler ~ Energy Efficiency Good day DOE I look at the performance ratings of all these boilers, and I have to ask ~ How many grades of natural gas do we have in America? If the residential market has it's high efficien cy natural gas water heaters and furnaces and condensing boilers, why does the co mmercial natural gas appliances get away with being 70% to 80's% energy efficient? America and the world is in a ba ttle with Climate Change. It's time to get serious and bring up the standards. It is even more important when dealing with the industrial na tural gas consumers. Natural gas can be consumed to mid 90% energy efficiency. The 3 main items of Climate Change that need to be addressed are: 1) Reduce Global Warming 2) Reduce CO2 Emissions 3) Conserve Water All 3 items are addressed by Increa sing Natural Gas Energy Efficiency. If the appliance is 70% or 80% energy efficient it doesn't always work to just replace the boiler with a Condensing Boiler, because the whole buildings space heating system has to be redone in order to make this new high efficiency conde nsing boiler operate as a condensing boiler. With a Condensing Economizer al ongside the conventiona l boiler, only a porti on of the buildings space heating requirements has to be converted to make the boiler operate as efficiently as the condensing boiler. There could be the option of heating the domes tic water, or at a hotel or university, using the recovered heat energy to heat the swimming pools. What needs to be done today is to "look over the edge of the box". There are ways to make these things happen. It's not about today or this y ear, but we have to be planning for the next 20 to 100 years. Your agency states that for every 1 million Btu' s of heat energy recovered from the exhaust of these natural gas appliances, and th is recovered heat ener gy is utilized in the building or facility, 117 lbs of CO2 will NOT be put into the atmos phere. This is big compared to electricity measures. This is going after the "meat & potatoes" instead of the low hanging fruit. If the building has a chimney poking out of the roof venting hot (ove r 200 F) exhaust, this should be investigated - Why. Exhaust temperatures in a properly designed system can at times in the summer be cooler than the outside air temperature. Mass Cooling? There is water in combusted natural gas, and during this condensing fl ue gas heat recovery process, this water is being crea ted. This distilled water is very usable. Do not waste the water. Have you ever seen combusted natural ga s irrigate the lawns and flower beds? This water can be injected into a buildings sanitary water lines.This wat e This wat e What ca n b e done a efficienc y How ma n America ? How ma n How ma n this reco v How ma n flue gas h What co u What w o I look fo r

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