| 摘要 |
In a shower arrangement comprising a shower head and a shower floor pan, a first conduit 1 for supplying water to said shower head and a second conduit 2 for draining waste water from said shower pan, a portion of the first conduit 1 is disposed within the second conduit 2 in heat-exchange relationship for exchange of heat between waste water in the second conduit and water in the first conduit, whereby to heat water in said first conduit. The conduits are coaxial tubes arranged in a spiral. The inner (supply) tube is corrugated to improve heat-exchange and mounted via spiders in the outer tube. <IMAGE> |
