The delivery consists of a set of 3 coolers for a hydrogen refueling station. 1 cooler for unloading the high-pressure hydrogen tube trailer and 2 coolers for transferring high-pressure hydrogen from the dispenser to the user (refueling). Refueling takes place at 380 barg; the design pressure of the heat exchangers is 550 barg.
For high-pressure hydrogen applications, ROBOX has developed its own heat exchangers, our so-called micro Shell & Tubes (mS&T). These resemble TEMA type BEU and BFU, where hydrogen passes through the tubes and the cover is fully welded shut. Additionally, the mS&T uses 1/4″ tubes to minimize wall thickness and maximize surface area. This results in a compact heat exchanger.
In this specific case, the coolers must be placed in the refueling station’s dispenser, replacing a plate heat exchanger. Because space was very limited as a result, we produced 2 short shells in series to meet the cooling capacity. Consequently, the customer does not need to make any further adjustments to the dispenser layout.
These are micro Shell & Tube heat exchangers. 2 shells in series, 1-pass shell and 2-pass tube side. U-bundle integrally welded with the cover and shell. TEMA type BEU. Stainless steel 316(L), PED cat. IV/Mod. H1 and ASME BPVC VIII.