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Green heat, from

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  1. 1. Green Heating
  2. 2. Leed Green Buildings
  3. 3. Quotes • Dean Kamen “ Our culture is 3000 miles wide and less then a nanometer deep. Every kid knows who Britney Spears and Paris Hilton are but none of them are going to influence your quality of life.” • John Ruhnke “ It is who you learn from that counts.”
  4. 4. The goal of green heating is to use the least amount of fuel to heat a conditioned space.
  5. 5. Building Automation and Controls
  6. 6. Heating System Efficiency can further be broken down into three parts. • Fuel Efficiency • Boiler Side Efficiency • System Side Efficiency
  7. 7. Fuel Efficiency kg CO2 per MMBtu 0 20 40 60 80 100 120 140 160 180 200 NaturalGas LPG Ethanol(E85) Motor Gasoline Kerosene DistillateFuel (Diesel) ResidualFuel (HeavyFuel Oil) Bituminous Coal Electricity From John Sigenthaler P.E.
  8. 8. Comparison and Conversion of Different Fuel Costs in Connecticut Electricity: .1755 cents per kwh = $5.14 per therm Natural Gas: $1.61 per ccf = $1.57 per therm #2 Heating Oil: $2.48 per gallon = $1.79 per therm Propane: $2.61 per gallon = $2.86 per therm 1 therm = 100,000 btu’s The national average of electricity is .0983khw and in ct we pay .1755khw or 78% more then average. Gas prices are better for us in ct. national average is 13.01 per mcf and in ct the price is 16.39 per mcf or 26% higher.
  9. 9. Fine Particulate Emissions 0.016 0.490 1.47 0.011 0.740 2.13 31.4 0.044 0.056 0 5 10 15 20 25 30 35 Hydronic Boilers Warm Air Furnace G as No . 2 @ 14 0 0 p p m S W o o d PelletLo w S < 50 0 p p mUSL < 15 p p m ug / kj From Brookhaven Labs
  10. 10. Source: Ecodesign of boiler – European Commission – European Commission Heating/Cooling Plant Energy Efficiency Ratings Electricity uses a built in conversion factor of 2.5 Cost Conversion factor for fuel types based on prices in Connecticut Gas = 1 / Oil = .9 / Electricity = .77 (Based on Ct State Averages)
  11. 11. Geothermal Energy from the Ground
  12. 12. Robur Gas Absorption Heat Pumps
  13. 13. Metano o GPL per: RISCALDAMENTO CONDIZIONAMENTO CLIMATIZZAZIONE REFRIGERAZIONE APPLICAZIONI di PROCESSO prodotti  One single unit forheating and cooling (= instead of a standard boiler plus an electrical chiller)  Heating efficiency up to 126%, by means of heat recovery from external environment (= saving up to 40% on gas heating cost).  Stable Operation Down to -20°F Efficiency over 100% even at apporx. 4°F.  Provides both chilled and hot water Perfect for easy zoning with one heat pump. Hot water up to 140 degrees.  Saves boiler room space Installs outside Robur
  14. 14. Solar Free Energy
  15. 15. Combined Heat & Power
  16. 16. Boiler Side Efficiency “The Fuel Savings were Immense!” Brook Jones, the homeowner
  17. 17. Boiler Replacement Study From the ASHRAE Journal by Tom Durkin P.E.
  18. 18. Five ways to save Energy on the Boiler Side • Lower water Temperature • Recover Heat from the Condensate • Less Standby Losses • Reduce Short Cycling • Tune combustion for lower stack temperature and oxygen.
  19. 19. • “After we installed radiant floor heating in several rooms, even on the coldest days, you can stand anywhere in the room and you're warm and comfortable. And with our indirect water heater, we never run out of hot water. Just as important, our hydronic system has cut our heating bills by 30%.” • -- Albert James, owner of a 3,000 sq. ft. home in Stamford, CT
  20. 20. CAD Drawings
  21. 21. System Side Efficiency From John Sigenthaler P.E.
  22. 22. • Santa waves bye bye to the energy as it escapes out of the vent.
  23. 23. Best Ways to save energy on the system side • Lower the water temperature • Run smaller distribution pipes • Do not run pipes in unconditioned spaces • Put your heat emitters on the inside walls • Turn down the thermostat • Balance the room temperatures
  24. 24. European Style Hydronics • “In Europe, essentially 100% of home heating systems are hydronic. Advantages reported for hydronic systems include comfort, reduced electric power consumption, and near elimination of energy losses associated with distribution systems (duct losses can reach 30- 40%)”. • by Dr. Tom Butcher, Dept Head, Energy Efficiency Buildings Div, Brookhaven Laboratories (One of 10 U.S. Dept of Energy Laboratories)
  25. 25. Low Temperature Hydronics • In Germany it is illegal to design for more the 138 degrees and a outdoor reset control is mandatory. • The rule of thumb is for every 2 or 3 degrees you lower the water temperature you can save 1% in fuel.
  26. 26. Even temperatures are delivered with warm comfortable radiant heating. New construction in Central Europe is 67% Radiant Heat.
  27. 27. Radiant Heating
  28. 28. Before and After
  29. 29. Underneath and Above
  30. 30. Jaga low temperature radiators and convectors
  31. 31. Jaga DBE • Prepare yourself for the future: same size, 3 times the heating output • Standard Low-H2O emitters are the most powerful on the market, thus the best choice for condensing boilers. But that’s not all! With optional DBE, these outputs can even be tripled! Combined with DBE the same fin tube element emits 2 to 3 times more heat, with no increase of size! This makes Low-H2O the best solution for heat pumps, solar energy and all systems running wih extremely low water temperatures as low as 95°F. DBE technology gives you the opportunity to make the best use of the full range of new, environmentally friendly systems.
  32. 32. Artistic Statements
  33. 33. The European House
  34. 34. Thank you! • John Ruhnke • JR’s ComfortableHeat LLC • • • (203) 849-1479