Mezzo Technologies Inc.

High-Pressure Heat Exchangers

High-Temperature/High-Pressure Heat Exchangers:

Microtubes are inherently useful in high-pressure applications: microtubes constrain high pressure fluids efficiently and the high heat transfer/volume ratio associated with small scale passages means that the size/cost of the heat exchange is reduced. The availability of superalloy microtubing (such as Inconel 625 and Haynes 282) means that the advantages of microtubes in high pressure applications can extend to high temperatures.

An example of a high temperature/high pressure currently being designed by Mezzo is a 5 MW supercritical CO 2 recuperator. This heat exchanger is being designed as part of an ARPA-E project. The characteristic temperature and pressure of this heat exchanger is 800 0 C and 3750 psi, respectively.

5 MW CO 2 recuperator core specifications:

Diameter= 200 mmCore length = 1400 mmCore (tube) mass = 34 kg