Wind tunnel turning vane heat exchanger

A connection piece for connecting a fluid pipe and a hollow turning vane to allow a heat exchange medium to flow through the hollow turning vane in a heat exchanger turning vane for a re-circulating wind tunnel, the connection piece comprising:

• a body having an upper and lower surface and a hollow interior;
• a hollow pipe connection piece extending from the upper surface and connecting to the interior;
• the pipe connection piece connecting to a fluid pipe;
• the lower surface being shaped to correspond to one end of the hollow turning vane;
• the connection piece having a plurality of attachment points for attaching to the end of the hollow turning vane, the attachment points all being accessible from a top side;
• the connection piece forming a fluid tight connection to the end of the hollow turning vane when the connection piece is removably attached to the hollow turning vane at only at the attachment points;
• and
• the connection piece being formed as a single unit.