Our client in Iceland would like to use the high steam pressure of a geyser to produce power. This is possible using a turbine. The low pressure of steam leaving the turbine would also be used to warm up clean water for the capital Reykjavik. The client is looking for a condenser, a so called surface vacuum condenser, to condense the steam. There are two important requirements for the design of the surface vacuum condenser: the pressure drop must be extremely small for the low pressure steam and the enormous forces of the turbine housing that connects to the condenser, must remain manageable. In addition, it must be taken into account that the steam from a geyser, the geothermal fluid, is anything but clean and will corrode various materials. The material used for the heat exchangers, for example, must be 254 SMO. It is also a known fact that the tube-to-plate connection could be a weak spot in the system. The extreme restart conditions also require particular attention.