Shell and Tube Evaporator

PERFORMANCE  [G-RL]

G-RL range shell&tube evaporators are designed for industrial cooling applications comfort and air-conditioning systems, low-temperature salting applications and heat pump systems. G-RL evaporators are designed for R134a coolant but they can be used with a wide range of coolants. The cooling capacity of G-RL line ranges from 160 kW to 1750 kW and they are manufactured with up to 3 standalone circuits. G-RL evaporators are designed to offer the high efficiency of reverse flow. This ensures minimum material cost and guarantees maximum efficiency.  

PERFORMANCE  [G-RC]

Shell&Tube Evaporators are used in industrial and comfort cooling units. 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 G-RCS and G-RCD series and from 100 Kw up to 1500 Kw for G-RPS and G-RPD series (when used with R134A gas). different working conditions in addition to its standard product range.

DESIGN AND MATERIAL

Materials used in 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 cross curtains

•  Asbestos-free cylinder head gasket

•  Steel bolts

QUALITY AND TEST

Mechanical calculations of G-RL ve G-RC line evaporators are in accordance with TS EN13445-3 standard and with a CE certificate in compliance with ISO 9001:2008 quality management system. Shell&Tube evaporators are tested with a gas side of 30 bars and a water side of 10 bars. Helium leak test is a standard test for all products. For products, a guarantee is offered against coolant leak for up to 2 gr/year. Tests are performed at various pressure levels for multi- circuit products and prevention of leakage between circuits is guaranteed.

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

The table below lists the recommended glycol solution for low-temperature operating conditions.

INSTALLATION AND OPERATION

Please ensure the following operating conditions for best use of your operator.

• The evaporator should be used in horizontal position.

• The air inside the product should be discharged before filling water.

• Ensure that the pressure drop and implementation conditions are in accor- dance with catalog values.

• Do not stop the water flow before the coolant in the evaporator is discharged.

• When not in use, fill the evaporator fully with anti-freeze fluid with no air in it and fully evacuate it, ensuring that it is dry.

• Regularly check the chemical properties of the water inside the evaporator. 

Incompliant water damages the evaporator.

•  In case of a capacity decrease, you can reverse-operate the system for a short time for cleaning.

•  Keep the evaporator away from sources of vibration.

•  Prevent foreign particles in the water.

•  Use anti-frees solution below 0 C.

•  Prevent air in the pump cavitation and the system.

•  Do not run the cooled fluids close to their freezing conditions.

•  Do not exceed the allowed water flow.