Why Should I Buy Miura

1. Why Should I Buy Miura?

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6. There are three major reasons for buying Miura Boilers.

11. Once you eliminate tube to tube sheet problems, it opens up many possibilities. Low Water Content for Fast Recovery. Elimination of Full Modulation Burners. Responsive, Multiple Installation Control. Highest, possible In-Service Efficiencies.

12. Low Water Content for Fast Recovery Full steam output within five minutes from cold start-up. Run boiler(s) when you need steam, and only when you need steam. Full internal inspection within one hour. (Note: The most efficient boiler is a �cold� boiler!

13. Elimination of Full Modulating Burners There are two reasons for full modulating burners. 1. Energy efficiency: Efficiency goes down with excessive pre-purge and post-purge losses. Fire tube boilers typically have one to two minutes prepurge. Miura�s pre-purge is only ten seconds for FM, LX units � minimizing this loss. 2. Thermal Stress: This is the primary reason for manufacturer�s to develop the modulating burner. Taking a fire tube from zero to full fire within seconds destroys the pressure vessel. Miura eliminates this problem with the floating header.

14. Responsive Multiple Installation Control Simple control through a steam pressure differential switch (not a steam flow sensor). Boilers can turn on and off like a light switch making steam only when you need steam. (The most efficient boiler is a cold boiler!) The MI controller marries the boilers to act like one, large boiler without the associated radiation losses. See MI Control demonstration.

15. Highest Possible In-Service Efficiency Save on an average around 20% in fuel with a 35% average load factor.

16. IN-SERVICE Efficiency

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18. Single Boiler Example (11% savings) Three Hundred BHP Peak Demand 1. Capital costs A. One three hundred BHP firebox fire tube with all the trim lists for about $89,500. One three hundred BHP MIURA EX unit lists for about $97,500. B. Boiler room size requirement for the three hundred BHP fire tube versus the three hundred BHP MIURA unit with the allowance considered for same ancillary equipment is 810 SQ.FT. vs. 380 SQ. FT. respectively. Assume a cost of $100/SQ.FT. for construction costs and MIURA saves about $43,000. Total capital cost savings on boiler equipment is a net $35,000 in favor of a Miura Boiler. 2. Fuel Savings Fire tube - (at an average of 35% peak load conditions) In-Service Efficiency: 72% Steam Demand: 3.175 x 10^7 lbs/year (at 1 PSIG) Nat. Gas Cost: 0.0090 $/FT^3 Nat. Gas HHV: 1004 BTU/FT^3 Steam Enthalpy: 1150 BTU/lb (at 1 PSIG) Feed Water Enthalpy - 212 BTU/lb 3.175 x 10^7 x 0.0090 x (1150-212)/(0.72 x 1004) = $370,785/year MIURA - with same conditions, in-service efficiency is 83%. 3.175 x 10^7 x 0.0090 x (1150-212)/(0.83 x 1004) = $321,769/year Fuel savings in favor of MIURA - $49,016/year. Total cost with the MIURA system is recovered in about two months, with five years savings about $245,080!

19. Multiple Boiler Example (11% Savings) Six Hundred BHP Peak Demand 1. Capital costs A. Two, six hundred BHP fire tubes with all the trim lists for about $220,000. An equivalent system with four, two hundred BHP MIURA EX units with an MI controller lists for about $287,000. B. Boiler room size requirement for the same six hundred BHP fire tubes versus four, two hundred BHP MIURA units with the same space considered for ancillary equipment is 1,599 SQ.FT. vs. 1065 SQ. FT. respectively. Assume a cost of $100/SQ.FT. for construction costs and MIURA saves about $53,400. Total capital cost savings on boiler equipment is a net $13,600 in favor of a fire tube system. 2. Fuel Savings Fire tube - (at an average of 35% peak load conditions) In-Service Efficiency: 72% Steam Demand: 6.35 x 10^7 lbs/year (at 1 PSIG) Nat. Gas Cost: 0.0090 $/FT^3 Nat. Gas HHV: 1004 BTU/FT^3 Steam Enthalpy: 1150 BTU/lb (at 1 PSIG) Feed Water Enthalpy - 212 BTU/lb 6.35x 10^7 x 0.0090 x (1150-212)/(0.72 x 1004) = $741,571/year MIURA - with same conditions, in-service efficiency is 83%. 6.35 x 10^7 x 0.0090 x (1150-212)/(0.83 x 1004) = $643,538/year Fuel savings in favor of MIURA - $98,033/year. Total costs with the MIURA system is recovered in about 7 months with five-year savings of $490,165!

20. How to calculate In-Service Efficiency

21. Day steam demand (every 10min)

22. A Real World Example Company : Chemical Co. Boiler type : 350HP Firetube boiler Year to built : 1991 Annual gas cost : about $491,000- Operating hour : 24 hrs/day 6 days/week

23. Firetube boiler ---- 350HP A Chemical Co.�s case

24. Result

25. Water Treatment Miura Boiler�s have similar water treatment requirements and can run side by side. Miura is the only design that can provide a thermal couple attached directly to the tube for early warning of scale condition. Miura offers the Colormetry to detect water hardness even before it enters the boiler.

26. Colormetry All Miura Boilers are Equipped with an Early Scale Warning Sensor Miura Also Offers Colormetry, a Revolutionary Method to Detect Trace Water Hardness

27. 3. Miura Online Maintenance (MOM) Miura can be online with the boiler at any location in the world. Requires only one, analog telephone line for up to 32 boilers at one location. See demonstration.

28. Two Steam or Hot Water Models

29. Miura vs. Coiltube Miura Boiler Inc. Coiltube Modulating burner Step Fire Modulation Full Modulation Start-up Push button and walk Must wait 5 to 10 minutes. Cycling Losses 10 Sec. pre-purge Blower stays on continually (20 sec. for IRI) MI Control Highly effective Not very effective Water Treatment Same as Fire/Watertube Unique to Coiltube Scale* Relatively stable* Highly Susceptable Efficiencies Fuel to Steam 85% 85% In-Service About 82% About 82% MI Control Highly Effective Slow Response Online Most Advanced on Market None Including �Sliding Window� * Miura offers two counter measures to monitor possible scale build-up. 1. A thermal couple which measures temperature rise on the tubes. Note that an eggshell thickness of scale results in 10% loss of efficiency. 2. Colormetry. Monitors hardness leakage before it gets into the boiler.

30. Miura vs Firetube Miura Boiler Inc. Firetube/Watertube Modulating burner Step Fire Modulation Full Modulation Cycling Losses 10 Sec. pre-purge 90 - 120 Sec. (20 sec. for IRI) Thermal Stress None (5 minute startup) Present (long startup) MI Control Highly effective Not practical �Leaky Tube� Repair Never an issue Always an issue 4 sq.ft. vs 1.5 sq.ft. H.S.A. P. V. Size Results in small P.V Much larger P.V. Scale Issue* Faster Scale Rate Slower Scale Rate Water Treatment Same as Fire/Watertube Same as Miura Efficiencies Fuel to Steam 85% About 83% In-Service* About 82% About 71% MI Control Highly Effective Not practical Space Roughly � the Space Roughly 2x Required Online Most Advanced on Market Generally Not Available Including �Sliding Window� * Miura offers two counter measures to monitor possible scale build-up. 1. A thermal couple which measures temperature rise on the tubes. Note that an eggshell thickness of scale results in 10% loss of efficiency. 2. Colormetry. Monitors hardness leakage before it gets into the boiler. * At typical load factor of 35%.