Heat exchangers

for pre-warming of engine oil in arctic conditions

are mainly coiled heat exchangers consisting of finned copper tubes. Similar to thread rolling, the fins are rolled out from the wall of the plain tube.

Finned tube heat exchangers retain their form under extreme conditions, as for example commercial vehicles are being subjected to, whilst being sufficiently malleable to allow bending to almost any shape. These characteristics combined with high performance allow the size of the heat exchangers to be kept to a minimum, for example in an engine sump.

The excellent thermal conductivity of copper and the extended surface area of finned copper tubes allow the heat to be transferred from a hot water-glycol mixture to an engine sump in an amazingly short time. This facilitates starting of the engine in cold conditions.

Coiled heat exchangers are only made to order and subject to a minimum order requirement. We would be pleased to assist you with the design and construction of your heat exchanger.