Radjaturi tas-Sett tal-Ġeneraturi tal-Bijogass (Colers Niexfa Komuni / Għoli- U -Arja b'Temperatura Baxxa-Mkessħa)

BijogassĠeneratur Set Radjaturi(Tipikament Nixxef-Tkessiħ tal-Ajru tat-Tip / Tkessiħ Separat b'Temperatura Għolja- u Baxxa-)

Il-bijogass huwa umdu ħafna, korrużiv, u fih ħafna impuritajiet. Għalhekk, id-disinji tar-radjaturi jipprijoritizzaw ir-reżistenza għall-korrużjoni, il-prevenzjoni tal-imblukkar, u t-tkessiħ b'temperatura għolja- u baxxa-separata. Fil-prattika tal-inġinerija, apparat li jkessaħ l-arja tat-tip niexef-jintuża kważi esklussivament, u t-torrijiet tat-tkessiħ tal-ilma mhumiex impjegati.

Biex tiġi żgurata l-effiċjenza u l-lonġevità, il-magni tal-bijogass ġeneralment jimpjegaw żewġ sistemi indipendenti tat-tkessiħ:

Ċirkwit ta'-Temperatura Għolja (HT)

Tkessiħ: Ilma tal-inforra taċ-ċilindru, blokka tal-magna

Temperatura: 85–95 grad

Funzjoni: Tipprevjeni s-sħana żejda tal-magna u żżomm effiċjenza termali stabbli

Ċirkwit ta'-Temperatura Baxxa (LT)

Tkessiħ: Arja intercooled, żejt tal-magna, preheater tal-bijogass

Temperatura: 55-70 grad

Funzjoni: Tbaxxi t-temperatura tal-arja tad-dħul, tipproteġi ż-żejt tal-magna, u tistabbilizza l-proporzjon tal--karburant tal-arja

Kull ċirkwit huwa mgħammar bi skambjatur tas-sħana ddedikat, imsejjaħ kollettivament coolers niexef b'temperatura għolja- u baxxa-.

Differenzi minn Radjaturi f'Magni Konvenzjonali Diżil/Gass Naturali

Reżistenza għall-Korrużjoni Mtejba

Il-bijogass fih H₂S u fwar tal-ilma, li huma korrużivi ħafna; xewk u pajpijiet għandhom ikunu reżistenti għall-korrużjoni-.

Aktar faċli biex tnaddaf

Il-bijogass fih ħafna impuritajiet, u xewk li jkessħu huma suxxettibbli għall-imblukkar; id-disinn għandu jiffaċilita l-ħasil tal-ilma u nfiħ tal-arja.

Kontroll tat-Temperatura aktar strett

Il-valur kalorifiku tal-bijogass ivarja b'mod sinifikanti; temperaturi instabbli fiċ-ċirkwit ta'-temperatura baxxa jaffettwaw direttament il-produzzjoni tal-enerġija u t-temperatura tal-egżost.

Protezzjoni tal-Ffriżar tax-Xitwa

L-antifreeze tal-ethylene glycol huwa komunement użat biex jipprevjeni l-fqigħ tal-pajpijiet minħabba l-iffriżar.

 

Biogas Generator Set Radiators (Typically Dry-Type Air Coolers / Separate High- and Low-Temperature Cooling) Biogas is highly humid, corrosive, and contains many impurities. Therefore, radiator designs prioritize corrosion resistance, clog prevention, and separate high- and low-temperature cooling. In engineering practice, dry-type air coolers are almost exclusively used, and water cooling towers are not employed.  To ensure efficiency and longevity, biogas engines generally employ two independent cooling systems: High-Temperature Circuit (HT) Cooling: Cylinder liner water, engine block Temperature: 85–95°C Function: Prevents engine overheating and maintains stable thermal efficiency Low-Temperature Circuit (LT) Cooling: Intercooled air, engine oil, biogas preheater Temperature: 55–70°C Function: Lowers intake air temperature, protects engine oil, and stabilizes the air-fuel ratio Each circuit is equipped with a dedicated heat exchanger, collectively referred to as high- and low-temperature dry coolers.  Differences from Radiators in Conventional Diesel/Natural Gas Engines Enhanced Corrosion Resistance Biogas contains H₂S and water vapor, which are highly corrosive; fins and piping must be corrosion-resistant. Easier to Clean Biogas contains many impurities, and cooling fins are prone to clogging; the design must facilitate water washing and air blowing. Stricter Temperature Control Biogas calorific value fluctuates significantly; unstable temperatures in the low-temperature circuit directly affect power output and exhaust temperature. Winter Freeze Protection Ethylene glycol antifreeze is commonly used to prevent pipe bursts due to freezing.

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