Heat Power B.V. is a specialist in the design and fabrication of fast responding boiler systems. These sub-critical steam boilers are able to generate saturated or superheated steam from saturated water. The technique makes use of forced convection heat transfer principles that combines the functionality of an economizer, evaporator and superheater, hence named a “Once Through Boiler” system. Depending on the size and application, start-up times of several minutes can be achieved while steam conditions can be varied within seconds.