| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fluid heating device with enhanced heat efficiency.SOLUTION: A fluid heating device heats fluid, and includes: a tabular flow channel formation body 1 provided with one or a plurality of flow channels C for fluid to be heated inside; a heater unit 2 contacting at least one surface of the flow channel formation body; and a cover material 3 covering the heater unit 2. Here, the flow channels C extend parallel to the contact surface with the heater unit 2, and when a distance from the contact surface to the flow channel C located at the shortest distance is denoted by t1, a thickness of the cover material 3 is denoted by t2, a heat conductivity of the flow channel formation body 1 is denoted by c1, and a heat conductivity of the cover material 3 is denoted by c2, a relation of c1/t1>c2/t2 is satisfied.</p> |
