Case Savings – Selected from over 40 Installations
Installation |
Boiler Types |
Total BHP |
BHR |
1st Year |
Masterfeeds |
Cleaver |
110 |
BHR-150 |
$8,750 |
Masterfeeds |
Cleaver |
150 |
BHR-15 |
$11,000 |
Strathroy Foods |
Cleaver |
300 |
BHR-150 |
$15,000 |
Shur-Gain |
Miura |
1,000 |
2 x BHR-150 |
>$10,000 |
Genpak |
Miura |
1,100 |
BHR-250HM |
>$10,000 |
Canadian Linen |
Miura |
500 |
BHR-150 |
>$9,000 |
Cadbury Adams |
Vapor |
1,500 |
BHR-250HM |
>$10,000 |
Korex |
Thermogenics |
1,500 |
BHR-48HM |
>$20,000 |
Kellogg Canada |
B&W |
3,600 |
BHR-48HM |
>$21,000 |
BHP = Boiler Horse Power
Savings calculated based on make-up water temperature differences and steam saved in boiler feedwater tank or deaerator.
Case History Data
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KOREX DON VALLEY ULC
Blowdown Heat Recovery Energy Saving Calculation Worksheet - click here (excel document)
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Unilever (Good Humor) Simcoe
Saves >$20,000 in First Year With Patented Blowdown Heat Recovery Process
Boilers:
2 x Miura 200 BHP
Boiler Feedwater:
Atmospheric Tank
Heated with steam to 160°f (71°C)
Make-up:
Softened city supply
Condensate:
Process condensate sewered
Estimated 30% returns
The patented Blowdown Heat Recovery (BHR) process recovers the flash steam produced during blowdown functions to the atmospheric Boiler Feedwater Tank. This reduces the amount of steam needed to be generated for preheating the make-up water in the Boiler Feedwater Tank.
The remaining energy in the blowdown is sufficient to heat the make-up water from 55°f (12.7°C) to 87°F (30.5°C). A 32°F temperature increase.
Process condensate, normally discharged to sewer is now passed into the storage section of the BHR vessel to allow the make-up water to pick-up the extra thermal energy. The make-up temperature now ranges between 95 – 100°F (35 – 37.8°C). Typically 40 – 45°F above normal city supply water temperatures.
With the recovery of flash steam and heated make-up, the energy required to heat the boiler feedwater to steam temperature is reduced by 494,460 BTU per hour. This is equivalent to 13.7 cubic meters of natural gas.
On an average day, approximately 330 cubic meters of gas are saved through this process. At their current gas prices, the savings are projected to be greater than $30,000 per year.
PROJECT COST PROFILE:
Savings Potential: >$30,000
BHR-150 Capital Cost: $6,000
Installation: $10,000
First Year Projected Savings: $14,000
Gas Supplier Rebate: $6,000
Total First Year Savings: $20,000
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References:
Available upon request – specific to your plant / boiler style
