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Condensed Water fluid bed waste heat recovery facility?
Hi Tech Energy’s ‘Condensed Water fluid bed heat exchanger’has Water fluid bed in heat exchanger where direct heat exchange is made with exhaust gas and water and heat pipe is inserted to heat water. It is patented Evacuated heat recovery heat exchanger (No. 0213303) that reduces corrosion.
Necessity of boiler exhaust gas evacuated heat recovery facility
Heat and water boilers are equipped in buildings including industrial boiler, apartment, hotel, hospital, bathhouse and swimming pool. Majority fuels are city gas and lamp oil, and the exhaust gas exit temperature is 160~250℃ with much vapor.
Compared to general heat exchanger, exit temperature of water fluid bed is below 60℃, which recovers current heat and potential heat of exhaust gas.
Water fluid bed facility reduces boiler fuel consumption by 8~18% and the economic feasibility of boiler exhaust gas waste heat recovery system has improved due to increase of fuel cost.
However, the distribution of general heat exchanger is not active due to corrosion in low temperature by acidity in exhaust gas. “Low temperature corrosion if boiler fuel is used”
According to US Battelle’s report on gas boiler use, exhaust gas has acid gas and general heat exchanger has corrosion by concentrating acidity.
Water fluid bed heat exchanger solves low temperature corrosion and increases heat recovery efficient
Features of water fluid bed heat exchanger
High economic feasibility with very good heat transfer rate
No acid corrosion
Maximization of heat exchange thanks to heat pipe cleaning function
Reduction of dust, Sox and NOx to improve environmental condition
Effect on environmental improvement of facilities due to dust removal of exhaust gas
Commercialization of water fluid bed heat exchanger
When water fluid bed heat exchange is used for heat recovery of humid exhaust gas from current paper mill process, it shows excellent energy cost saving
Potential heat recovery was 92% over total recovery heat as a result of facility performance
No performance reduction by attaching dust inside heat exchanger during operation
Annual fuel cost saving up to 600 million to 1.2 billion won
Investment break-even point of water fluid bed heat exchanger is 1~1.5 year
It is widely used for buildings including industrial boiler, apartment, hotel, hospital, bathhouse and water fluid bed facility heat transfer and corrosion resistance are excellent as well as excellent waste heat recovery.