This article has a hollow fiber membrane module disposed in the center of the device, selectively separates water from the target fluid passing through the module, and performs high concentration concentration without heating it without denaturing useful components. Compact non-heated water separator that can be used to heat and concentrate liquids of various types in the fields of medicine, . The part shown by the solid line is the part that is going to receive the design registration as a partial design. The bottom view is omitted because it is not usually visible. The door panel in the center of the device is transparent.