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Maxi-ThermSince 2002, throughout North America, Maxi-Therm has been
manufacturing innovative packaged solutions for informed specifiers.
// 0% flash steam
// 5.4% to 20% energy savings and greenhouse gas reduction
// Vertical flooded concept
// No steam PRV
// No steam safety relief to roof
// European method
// No pumping sub-station
// Transfering latent and sensible heat of steam
// 1000 btu/lb. of steam
Steam to liquid. Vertical flooded heat exchanger concept.
Why we are the leaders. 5
Hot water generation. Building heat & domestic. 7
Hot water generation. The ultimate package solution. 17
Steam to steam generation. 21
World-class laboratory and seminars. 24
United States & Canada exclusive representatives. 26
Table of contents
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Maxi-Therm, the leaders in heat transfer technology At Maxi-Therm, we are at the forefront of innovation, developing industry-leading heat transfer technology that is more cost-effective, greener, and more energy and space efficient than conventional heat exchange systems.
Why we are the leaders
Our award-winning achievementsMaxi-Therm’s patented Vertical Flooded Heat Exchanger is industry-recognized, receiving honorable mention at the ASHRAE, AHR EXPO 2005, Orlando, Florida. Over the past 7 years, we have designed and built over 250 of our patented Vertical Flooded Heat Exchangers in hospital, institutional, pharmaceutical and also co-generation complexes, offering our clients an efficient, cost-effective heat transfer solution.
First Prize For Product Design Technology 2002 A.Q.M.E. Canada.
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Vertical flooded design
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Hot water generation
Steam to liquid Building heat & domestic (double wall)
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The Maxi-Therm conceptWe developed our patented, award-winning Vertical Flooded Heat Exchanger based on a proven system used in Europe for over 25 years – but we innovated to enhance its performance.
Like the European design, our Vertical Flooded Heat Exchanger features an oversized vertical shell & tube heat exchanger « A » that uses latent & sensible heat of steam to heat a liquid.
Because it is oversized, the heat exchanger becomes flooded with condensate that is evacuated at a preset subcooled temperature (usually 200°F), making it possible to optimize use of the sensible heat of steam and eliminate the occurrence of flash steam. A condensate control valve « B » varies the level of condensate in the heat exchanger according to the process load «D & G» resulting in a 5.4% to 20% energy savings and reduction of greenhouse gas.
Maxi-Therm’s patented innovationsWhen developing our system, we identified two major issues with the European system:
1. The steam pressure must always be lower than the liquid pressure.
2. There is no guarantee of stability of the heated liquid outlet set point temperature, which results in a high level of wasted energy, thereby compromising cost-effectiveness.
With Maxi-Therm’s patented design, however, we resolved these issues1. No pressure reducing station on the steam side « C » and no safety relief valve(s) to the roof are required. In fact, we recommend using high-pressure steam (even over 170 psig and we always size the heat exchanger to subcool condensate to 200°F « D ». Plus, our heat exchanger uses more sensible heat, for greater performance and efficiency. Simply, our technology always uses ± 1000 btu/lb. of total heat of steam, either at 10 psig or 125 psig steam pressure.
2. We have achieved stability of heated liquid outlet set point temperature for building heat « H ». In fact, we are the first to guarantee ± 2˚F of set point temperature, even when variable speed drives are used on the circulating pump « G ».
3. Stabilizing pump « J » pre-heats incoming liquid and creates additional turbulence in heat exchanger « A », averaging temperature towards sensor « D ». Therefore the purpose of the stabilization circuit is to stabilize the fluid temperature across the heat exchanger circuit.
4. No condensate pumping substation needed to lift condensate « E ».
5. Condensate Mixer « F » enables high pressure steam traps « I » to discharge directly in the flooded return line « E » without creating any water hammer.
Hot water generationSteam to liquid
Online catalog maxi-therm.net
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± 2˚F OF SET POINT
CONTROL VALVE
CUSTOMER CIRCULATING PUMP(BUILDING HEAT)
0% FLASH, 200˚F CONDENSATE RETURN
CANADIAN PATENT # 2,416,353
US PATENT # 6,857,467 - B2
“Honorable Mention” by ASHRAE-AHR-Expo 2005 / Orlando, Florida
First Prize For Product Design Technology 2002 A.Q.M.E. Canada.
F BD
D
A
C
0% F
lash
con
dens
ate
retu
rn
Vert
ical
hea
t ex
chan
ge
200oF condensate outlet (at Full load)
E
II
G
J
E
175 psig (378˚F), 125 psig (353˚F)
60 psig (308˚F) or 10 psig (240˚F)
H
steaM inlet
Hot water generation
Steam to liquid
All major components are fabricated in the U.S.A
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(1) less make-up Water
The boiler gets back more condensate so you use less fresh water. This also means less softening, chemical treatment, and surface blowdown.
(2) condensate pumps last longer
Condensate that is “too hot” causes pump cavitation and seal leaks.
(3) no steam prV station
The Maxi-Therm can use high, medium or low pressure steam directly.
(4) no steam safetY relief to roof
Many times the vent piping is the most expensive part of the entire system. Maxi-Therm can eliminate the need for both the pressure relief and condensate receiver vent.
Conventional Control
(3)
(1)
(4)
(6)
(8)
(4)
(5)
(2)
Hot water generationSteam to liquid
Online catalog maxi-therm.net
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(5) no pumping sub-station
The conventional heater will utilize a pump to push the condensate back to a central return station. The pump will require electricity or steam power, again using more energy. This power source will need a control system and isolation.
(6) smaller steam inlet and condensate return lines
(7) smaller control ValVe
(8) Vacuum breaker
The Maxi-Therm runs at constant pressure and a vacuum breaker is not needed. Independent site testing demonstrated seven times less corrosion rate.
(9) 0% flash 5.4% to 20% energY saVing and greenhouse gas reduction
(10) stabilitY of set point temperature 2˚f
Maxi-Therm Control
(1)
(3) (4) (6)
(7)
(10)
(9)(6)(5)
(2)
Hot water generation
Steam to liquid
All major components are fabricated in the U.S.A
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TUBES 20% FLOODED
CONTROL VALVE
STEAM338˚F
CONDENSATE@ 200˚F
180˚F
160˚F
TUBES 62% FLOODED
CONTROL VALVE
STEAM338˚F
CONDENSATE@ 185˚F
180˚F
170˚F
TUBES 92% FLOODED
CONTROL VALVE
STEAM338˚F
CONDENSATE@ 179˚F
180˚F
178˚F
TUBES 100% FLOODED
CONTROL VALVE
STEAM338˚F
NO CONDENSATE
180˚F
180˚F
Sequence of operationSteam in the tubes at 100 psig
MC system operation example Temperature is controlled by modulating the condensate (MC) not throttling the steam. A building heat system with constant 100 psi steam at 338˚F. At full load 20˚F rise, water enters at 160˚F and leaves at 180˚F. As entering water temperature rises, the amount of surface exposed to steam is reduced. Condensate is cooled to 200˚F or less by entering water, eliminating flash steam. 5.4% to 20% energy savings. No steam PRV station, no safety relief to roof, no pumping sub-station.
Hot water generationSteam to liquid
Online catalog maxi-therm.net
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Manufacturing facilities and service technicians in the United States & Canada • CustomfabricationperASMESectionVIIIDIV#1,U-UM-Rstamp.
• QualitycontrolassuranceprogramCSAB51,ANSIB31.1,B31.3,B31.5.
• NationalboardISO9001-2000.
• Over250unitsinstalledfrom10usgpmto2750usgpminHOSPITALS,UNIVERSITIESandinstitutions.
Hot water generation
Steam to liquid
All major components are fabricated in the U.S.A
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Hot water generationSteam to liquid
Online catalog maxi-therm.net
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Hot water generation
Steam to liquid
All major components are fabricated in the U.S.A
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Engineered Solution
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Hot water generation
The ultimate package solution
Engineered Solution
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• 1200USGPMGlycol.120°Fto185°[email protected].
• Yearlyenergysavings60K.Greenhousegasreduction15%.Installationcostsaving80K.
• Floorspace15’x7’x13’H.
Including 2-75 HP circulating pumps. Expansion tank. Air separator. Control panel. Piping & accessories.
Not requiredNo steam PRV station / No steam safety relief to roof / No pumping sub-station.
Energy savings & greenhouse gas reduction A result of using latent & sensible heat of steam, subcooling condensate to 200°F (no flash steam).
Stability Stability of liquid set point temperature ± 2°F, on variable load condition.
Online catalog maxi-therm.net
Hot water generationThe ultimate package solution
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7’
13’
7’
15’
STEAM
CONDENSATE
STEAM
GLYCOL
CONDENSATE
CAD drawing prepared by Maxi-Therm
All major components are fabricated in the U.S.A
Hot water generation
The ultimate package solution
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Quality steam @ 97% saturated
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Steam to steam generation
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Clean steam generation • TheMaxi-ThermCSSeriesmakesclean steam if used with softened or demineralized water (D.I., R.O.).
• Usingcentralordistrictsteam,Maxi-Therm will make steam at pressures above 0 psig.
• Maxi-Thermmayconsume15.4%LESSsteam than generators on central plant steam.
• Theunitsarepre-assembledandtested.
Maxi-Therm CS units can be used for • Humidification
• Sterilization-97%saturated
• Directsteamcleaning
Principle of operation High pressure steam flows through a control ValVe, and is throttled to maintain the clean steam out pressure. Clean steam is generated by the heat eXchanger vessel. The vertical design uses a second reserVe vessel, for separation, plus level and pressure stabilization.
Incoming water flows through two pre-heater units. One removes heat from the blowdown water, the other cools hot condensate draining from the heat eXchanger coil. If sudden pressure fluctuations are expected, typical of autoclave applications, an optional back pressure ValVe can be furnished. This keeps the outlet steam dry. The automatic feed Water ValVe and bloW doWn ValVe are controlled together. This enables the heating of the feed water.
Sterilization Maxi-Therm can supply quality steam to 97% saturated and greater (less than 3% of the mixture mass is liquid). As recommended by sterilizer manufacturers and also clearly indicated in the manual “Sterilizationtechnologyforthehealthcarefacility”,secondedition,MariMargaretReichertandJackH.Young.
Online catalog maxi-therm.net
Steamto steamgeneration
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USPATENT#7093566
“Honorable Mention” by ASHRAE-AHR-Expo 2005 CANADIANPATENTPENDING
All major components are fabricated in the U.S.A
Steamto steam
generation
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World class laboratory and seminars
Online catalog maxi-therm.net
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Our world-class facilityHeadquartered in Montreal, Canada, Maxi-Therm boasts a leading-edge R&D laboratory that is unique in the world. Equipped with 1,000,000 BTU capacity and steam at 100 psig, this is where we test and demonstrate the performance and stability of set point temperature and invite our customers to a full 2-day technical seminar with regards to our innovating products such as vertical flooded concept, clean steam generators for humidification and sterilization.
1-Controllingqualitysteam@97%saturatedforsterilization
2-Controllingqualitysteam@97%saturatedforhumidification
3- Vertical flooded design updates
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2
3
All major components are fabricated in the U.S.A
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United States & Canada
Exclusive representatives 26
CANADAMontreal/Quebec HEADQUARTERS Laboratory / Seminar room Maxi-Therm Inc. Raymond Lach [president - founder] GabrielCossetteEng. [director of engineering] T 514-351-1001 [email protected]
Maritimes Aquavap Indotec Agencies GerryWaselynchuk T 506-857-8788 [email protected]
Ontario KlimarAgencyInc. Erik Walesiak T 613-822-4110 [email protected]
Alberta & Vancouver Summit Valve & Controls Inc Sean Albers T780-468-6900 [email protected]
UNITED STATESRegional sales manager RobertKnox T720-320-9428 [email protected]
Arizona S.A.M. LLC RobertKnox T720-320-9428 [email protected]
Arkansas Eggelhof Harry B. Stephens T318-222-9251 [email protected]
Colorado Eggelhof KerryJohnson T 303-288-0227 [email protected]
Connecticut Little Inc. WaltKuzia T 203-375-6651 [email protected]
Delaware Energy Products Co Jeff Bailey T 610-544-3400 [email protected]
Idaho Eggelhof KerryJohnson T801-265-9400 [email protected]
Illinois Meilner Mech Sales Inc. Tony Ranallo T 847-253-1040 [email protected]
Indiana Meilner Mech Sales Inc. Tony Ranallo T 847-253-1040 [email protected]
Iowa Specialized Products Inc Jeremy Eickhoff T402-391-7550 [email protected]
Kansas Specialized Products Inc Jeremy Eickhoff T402-391-7550 [email protected]
Kentucky Whitfill - Mc Carthy LLC Bill Mc Carthy T 513-841-2006 [email protected]
Louisiana Eggelhof BarryGautreau T 225-647-5551 [email protected]
Massachusetts Little Inc. WaltKuzia T 203-375-6651 [email protected]
Minnesota Specialized Products Inc Jeremy Eickhoff T402-391-7550 [email protected]
Mississippi Eggelhof BarryGautreau T 225-647-5551 [email protected]
Missouri Specialized Products Inc Jeremy Eickhoff T402-391-7550 [email protected]
Montana S.A.M. LLC RobertKnox T720-320-9428 [email protected]
Nebraska Specialized Products Inc Jeremy Eickhoff T402-391-7550 [email protected]
Nevada Eggelhof KerryJohnson T801-265-9400 [email protected]
New Jersey Energy Products Co Jeff Bailey T 610-544-3400 [email protected]
New York MPN Boilers Will Hayes T914-332-0088 [email protected]
New-Mexico Eggelhof Shawn Stewart T 505-344-4424 [email protected]
North Dakota S.A.M. LLC RobertKnox T720-320-9428 [email protected]
Ohio Whitfill - Mc Carthy LLC Bill Mc Carthy T 513-841-2006 [email protected]
Oklahoma Eggelhof Mike Martin T918-664-0400 [email protected]
Pennsylvania (Pittsburgh) Cannon Boiler Works ChrisGiron T 724-335-8541 [email protected]
Pennsylvania (Philadelphia)Energy Products Co Jeff Bailey T 610-544-3400 [email protected]
Rhode Island Little Inc. WaltKuzia T 203-375-6651 [email protected]
South Dakota Specialized Products Inc Jeremy Eickhoff T402-391-7550 [email protected]
Texas Eggelhof JerryGay T713-923-9461 [email protected]
Utah Eggelhof KerryJohnson T801-265-9400 [email protected]
Wisconsin KEISteamSolutions KevinRasmussen T920-465-4130 [email protected]
Wyoming Eggelhof KerryJohnson T 303-288-0227 [email protected]
Exclusive representatives 27
