| 摘要 |
<p>It is used for heating a secondary fluid such as swimming pool water or sea water. It comprises a body (1) provided with an inlet (6) for the secondary fluid to be heated and an outlet (7) for the heated fluid, a ferrule (8) inside the body, a coil (10) through which the primary fluid flows and which is housed inside the annular space contained between the body (1) and the ferrule (8) and outside which the water to be heated passes. The body (1) and the ferrule (8) are made from a plastic-based material which may or may not be reinforced, whilst the coil (10) is made of titanium. <IMAGE></p> |
