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Real World Application of the Heat Machine

Real World Application of the Heat Machine. A chiller capable of producing water temperatures of low 40’s on the evaporator side and above 135° on the condenser side. What is a Heat Machine. Wherever there is a simultaneous demand for hot water and chilled water. Heat Machine Application.

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Real World Application of the Heat Machine

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  1. Real World Application of the Heat Machine

  2. A chiller capable of producing water temperatures of low 40’s on the evaporator side and above 135° on the condenser side. What is a Heat Machine

  3. Wherever there is a simultaneous demand for hot water and chilled water. Heat Machine Application

  4. Serves app. 1 million square feet • Dorms, classrooms and research labs • Half a million square feet in research labs • Once through air has to be de-humidified • Accomplished by chilling air to 55 and reheating to maintain comfort conditions • Year round heating demand UAH Central Plant

  5. 3600 tons of conventional cooling • 1300 horsepower Natural gas/fuel oil boilers UAH Central Plant

  6. Two 500 hp natural gas fire tube boilers • “Most efficient fire tube boilers in the state” • 180 degree water, 190 degree stack temperature Boilers

  7. Low Delta T syndrome • Characterized by: • Over pumping primary system • Higher chilled water supply temperatures • Forcing additional chillers on before chillers are fully loaded. Primary/Secondary Pumping

  8. UAH Chilled Water Plant

  9. UAH Heat Machines

  10. Lowest first cost option • Solved Boiler condensing • Reduced run time on boiler by 3 • Reduced maintenance on boiler • Essentially solved low Delta T syndrome Reasons for Heat Machine

  11. Allowed Us To Condition Our New Student Center From Our Existing Central Plant • No Square Footage Needed for Boiler in New Building • No Air-Cooled Chiller Near Building (Noise) • Lowest Design/Construction Option • Total Project Cost ~ $550,000 • Added Cooling and Heating Redundancy • ~ 400 Tons of Cooling (4,800,000 BTUH) • ~ 180 Boiler Horsepower (6,000,000 BTUH) • Most Economical Way For Us to Make Hot Water Why We Decided To Install Heat-Machines

  12. What Is The Product Of A Water To Water Chiller?

  13. What Is The Product Of A Water To Water Chiller? COLD WATER

  14. What Is The BY-Product Of A Water To Water Chiller?

  15. What Is The BY-Product Of A Water To Water Chiller? Warm/Hot Water

  16. October 11, 2013 Heat-Machine Snapshot What Is My Product – What Is My By-Product?

  17. October 11, 2013 Heat-Machine Snapshot

  18. Coefficient Of Performance COP is the ratio of the heating or cooling provided over energy consumed

  19. COP - COOLING

  20. WORK IN COOLING Example 1 (Snapshot in time)

  21. COP - HEATING

  22. Electric Boiler/Water Heater ~100% Efficient • 1 KWH = 3,412 BTUs • COP = ~1 HEATING Example 1 COP is the ratio of the heating or cooling provided over energy consumed

  23. Natural Gas Boiler Combustion Efficiencies • Fire Tube Boiler – 83 to 85% • COP = .85 HEATING Example 2 COP is the ratio of the heating or cooling provided over energy consumed

  24. What Would The Formula To Calculate COP Look Like If We Had An Application For Using Both Hot Water (Product) and Chilled Water (Byproduct) Simultaneously?

  25. COPTotal = COPHEATING + COPCOOLING

  26. For 1,000,000BTUs Electricity $25.25 Nat. Gas $8.02 #2 Fuel Oil $24.51 Current Fuel Cost

  27. For 1,000,000 BTUs Electricity $25.25 ____with COP of 7.09 Nat. Gas $8.02 $9.22 if used in 85% eff. Boiler COP 0.85 #2 Fuel Oil $24.51 $28.84 if used in 85% eff. boiler COP 0.85 Current Fuel Cost

  28. For 1,000,000 BTUs Electricity $25.25 $3.56 with COP of 7.09 Nat. Gas $8.02 $9.22 if used in 85% eff. Boiler COP 0.85 #2 Fuel Oil $24.51 $28.84 if used in 85% eff. boiler COP 0.85 Current Fuel Cost

  29. BTUs COP TREND DATA

  30. BTUs Product: 13,395,000,000 BTUs HEATING RESULTS TO DATE (01-16-14)

  31. By-Product: 108,322,148,000 BTUs 902,679 Ton Hours Tons COOLING RESULTS TO DATE (01-16-14)

  32. 2,040,054 GALLONS $3,162.08 Chemical Savings Yet To Be Determined. WATER SAVINGS TO DATE (01-16-14)

  33. May 13TH To January 16TH $130,000. $ Cumulative Savings Since Installation

  34. 198,000 $ Projected Annual Savings Rate

  35. 0 years? 2.5 to 3 Years Projected Payback

  36. Questions

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