| 摘要 |
<p>A device and method for recovering heat from the soil and groundwater, comprising heat-exchanging means consisting of an inner tube (2,44b) and an outer tube (1,44a) and partitions (16,44c) forming longitudinal channels (17,51a) between said inner and outer tube.</p><p>An inlet (7,32,47) for heat-exchanging fluid and an outlet for heat-exchanging fluid (9,33,49) are present for conveying a heat-exchanging fluid through the channels (17,51a).</p><p>The heat-exchanging means are preferably placed in a perforated casing (35) allowing passage of liquid but not of soil particles. The casing consists preferably of an outer casing tube (38) and an inner casing tube (39), casing partitions (40) providing longitudinal casing channels (51). For allowing passage of groundwater the outer casing tube (38) and the inner casing tube are provided with perforations (41,42).</p><p>Heat is recovered by passing a heat-exchanging fluid through the casing channels (51).</p> |
