| 摘要 |
<p>A device (1) for measuring the energy transported in a fluid circulation system including a supply pipe and a return pipe, comprises a tube (2) to be incorporated in the supply pipe, and a tube (3) to be incorporated in the return pipe. A transducer (4) with a thermally conductive body (6) is mounted between these tubes (2, 3), wherein two temperature measuring elements (11, 12) are contacting the body (6). In the respective tubes two opposite surfaces (9, 10) of the body (6) are along at least a part of their length in heat interchanging contact with the fluid flowing through these tubes (2, 3). In at least one of the tubes (2, 3) a shielding means (13) is mounted in such a manner that a channel (14, 15) accessible for the fluid flowing through this tube (2, 3) is formed, which channel substantially shields the corresponding surface (9, 10) of the body (6) from the fluid flowing through the tube (2, 3). However, a portion of this fluid flows in laminar fashion through the channel (14, 15). Thereby, the temperature measuring elements (11, 12) produce a measuring signal which is substantially linearly dependent on the energy transported so that a simple processing of the measuring signal is possible.</p> |
