Rollfin Refkar Make Shell & Tube Evaporators and Condenser

Rollfin Rekar Make Shell & Tube Condenser

Performance

REFKAR Shell&Tube Condensers are used in industrial and comfort cooling units. REFKAR RKDEW and RKMDEW series Shell&Tube Condensers are manufactured in order to provide low pressure loss and high efficiency starting from a cooling capacity of 20 kW up to a capacity of 1680 kW under standard working conditions. RKDEW series Shell&Tube condensers are used in cooling applications where city water and storage water are used while RKMDEW series Shell&Tube condensers are used in cooling applications with sea water. Having adopted customer satisfaction as its main principle, REFKAR also renders services for customer focused projects under different working conditions in addition to its standard product range.

Design & Material

REFKAR Shell&Tube Condensers are designed in order to minimize performance decreasing factors such as vibration and corrosion. RKMDEW series Shell&Tube condensers are designed and manufactured as resistant to corrosive effects of sea water. Materials used in REFKAR Shell&Tube Condensers are selected according to “European Pressure Vessel Codes”. Materials used in REFKAR shell&tube type evaporators are chosen in complience with “European Pressure Vessel Codes”
RKDEW Shell&Tube Condensers; 

a) Heat transfer pipes with a special geometry and inside and outside grooves enabling the heat transfer are made of copper 

b) Tube sheets and bodies are made of steel 

c) Head Covers are made of cast iron 

d) Bolts are made of steel alloy 

e) Gaskets are made of asbestos free materials that are compatible with HCFC and HCF cooling gases.

Fouling Factor

Fouling factor (f.f.) is important in selecting an condenser. The fouling factor levels under certain conditions are given below.
 

Closed-circuit mains water f.f.= 0.000043 m2K/W
 

Open-circuit mains water f.f.= 0.000086 m2K/W
 

Glycol solution < %40 f.f.= 0.000086 m2K/W 

Glycol solution > %40 f.f.= 0.000172 m2K/W

Rollfin Rekar Make Shell & Tube Evaporator

Performance

REFKAR Shell&Tube Evaporators are used in industrial and comfort cooling units. Refkar Evaporators are manufactured in order to provide low pressure loss and high efficiency starting from a cooling capacity of 20 Kw up to a capacity of 1500 Kw for RCD and RCD series and from 100 Kw up to 1500 Kw for RPS and RPD series (when used with R134A gas). Having adopted customer satisfaction as its main principle, REFKAR also renders services for customer focused projects under different working conditions in addition to its standard product range.

Design & Material

Materials used in REFKAR products comply with EN norms. Materials with the following specifications are used in standard products.
 

Cast iron or carbon steel covers
 

Carbon steel body pipe, coolant and water connections
 

Copper heat transfer piping
 

Plastic baffles
 

Asbestos-free cylinder head gasket
 

Steel bolts
 

Manufacturing with other materials on request

Fouling Factor

Fouling factor (f.f.) is important in selecting an evaporator. The fouling factor levels under certain conditions are given below.
 

Closed-circuit mains water f.f.= 0.000043 m2K/W
 

Open-circuit mains water f.f.= 0.000086 m2K/W
 

Glycol solution < %40 f.f.= 0.000086 m2K/W 

Glycol solution > %40 f.f.= 0.000172 m2K/W