Oil cooler : Shell and tube heat exchangers

Rotating machines not only require proper lubrication, but also heat dissipation from their operation. Oil coolers make it possible on the one hand to cool and therefore extract part of the heat produced during the operation of the rotating machine, but also to restore to the oil its viscosity properties and therefore its power. lubricant.

Thermal specificities:

Quiri, specialist in heat exchangers, introduces you a BEU TEMA type oil cooler.

We have delivered this type of heat exchangers to Finland, France and China as part of the construction of EPR type nuclear power plants.
The oil cooler, which is a multitubular heat exchanger, of Quiri thermal design, provides cooling of the upper bearing oil of each motor (primary fluid) by heat exchange with circulating demineralized water (secondary fluid).

Some Technical Data:

		Shell side	Tube side
Nature of fluids		Oil	demineralized water
Flow	t/h	55	60
Inlet temperature	°C	53	38
Outlet temperature	°C	44	42
Operating pressure	Bar abs	2,5	8
Design pressure	Bar g	10	13,5
Design temperature	°C	95	95
Heat exchanged	kW	260
Main dimensions
Type of bundle tubes		Bent finned tubes
Shell diameter	mm	500

Geometric specificities:

Vertical tubular heat exchanger, overall length 3.5 m, empty weight 2 tons.

Construction Specificities:

Code : EN 13445

Calculation of the exchanger by finite element. The heat exchanger is designed to withstand the seismic forces generated by horizontal and vertical accelerations as well as to withstand the seismic forces exerted in the event of primary piping failure.
Regulation: DESP 2014/68 / EU

Calcul de l’échangeur par éléments finis. L’échangeur de chaleur est conçu pour supporter les efforts sismiques engendrés par les accélérations horizontales et verticales ainsi que pour supporter les efforts sismiques exercés en cas de rupture de tuyauterie primaire.

Règlementation : PED 2014/68/UE

Metallurgy:

	Material	Standard
Shell	P265 GH	EN 10028-2
Tubesheet	P295 GH	EN 10222-2
Shell and channel flanges	P295 GH	EN 10222-2
Cover	P295 GH	EN 10028-2
Bundle tubes	Cu-DHP R220	EN 12452
Nozzles	P235 GH	EN 10216-2
Baffles	P265 GH	EN 10028-2

Tube to tubesheet attachment : expanded 2 rills

Welding procedures : according to EN ISO 15614-1 or EN 288.3 and EN ISO 15613

Welders qualifications : according to EN ISO 9606-1 and EN 14732

Quality specificities:

LOFC according to customer specifications, requirements of European and local regulations.

The specific EDF, Stück and Chinese requirements were followed.

The project was followed by various organizations such as AREVA, Ceidre, TVO, Stück.

Oil cooler : Shell and tube heat exchangers - Quiri - 2