Normal Flow Heat Transfer

The patented Normal Flow Cold Plates (NCP™) have a manifold that distributes and collects coolant over the entire active area. The coolant then flows in and out of the microchannel matrix in a direction perpendicular to the heat acquisition surface. The flow length through the matrix is very short (~1mm) and independent of the area of the active surface. Hence the NCP pressure drop is very low and independent of cold plate size.

Another advantage of Normal Flow technology is that fresh coolant is supplied to all areas of the cold plate. This means that for uniform heat input, the cold plate surface temperature is also uniform. This contrasts with parallel flow cold plates, in which the temperatures are highest near the exit port. Conversely, if the heat input is not uniform, the local coolant flow can be tailored to mitigate “hot spots“.

Normal Flow VS Parallel Flow

Normal Flow Path

Normal Flow Path