Saving energy solution from boiler exhaust gas by Enonomizer

1/ Situation

Saving energy and reduce CO2 emissions are among top goals of factory to meet green production standard and contribute to environmental protection

Hesco customer is leading Japanese cosmetic that using two LPG boiler with capacity 3 tons/h. The exhaust gas of these boilers is arround 190oC-200oC so they invite Hesco team to survey and offer saving energy solution for heat recovery.

2/ Solution

After survey, Hesco team calculated and offer a solution to customer by:

Used a economizer unit to preheat water from 32oC/60oC, flow rate 5m3/h -> Heat recovery capacity up to162kWh.
Paypack time: 1.5 years only.
PID diaphragm as below:

Site installation:

Scope of Hesco on this project

Design whole project
Supply plate heat exchanger Hisaka, Economizer unit, Grundfos pump, valve and piping system
Install and do T&C
Warranty on performance of this system

Site Picture:

Lift up the unit in exhaust gas pipe

3/ Result

After installation at site, customer feedback this system work very efficiency and outstanding performance.

Hesco assign engineer to customer site every 3 months for collect performance data for customer.

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Saving energy solution from boiler exhaust gas by Enonomizer