초록 ▼

A water sump structure (1) is provided. A channel, trough, trench or the like is formed as or provided with an impermeable member (7) for trapping water. One or more heat exchange pipes (6) for carrying a heat exchange fluid are located, in use, so as to pass through water trapped by the impermeable

A water sump structure (1) is provided. A channel, trough, trench or the like is formed as or provided with an impermeable member (7) for trapping water. One or more heat exchange pipes (6) for carrying a heat exchange fluid are located, in use, so as to pass through water trapped by the impermeable member thereby forming a heat exchange water sump structure.

대표청구항 ▼

The invention claimed is: 1. A subterranean water sump structure comprising:a substantially water impermeable member which is adapted, in use, to collect rainfall or other precipitation from above the ground and trap the water below the ground;at least one heat exchange pipe for carrying a heat exch

The invention claimed is: 1. A subterranean water sump structure comprising:a substantially water impermeable member which is adapted, in use, to collect rainfall or other precipitation from above the ground and trap the water below the ground;at least one heat exchange pipe for carrying a heat exchange fluid and located, in use, so as to pass through water trapped by the impermeable member,primary particulate material through which said at least one heat exchange pipe passes, said primary particulate material having primary particles and being overlaid by a water permeable layer of secondary particulate material having secondary particles; andwherein the size of the secondary particles is greater than the size of the primary particles.