Objective
Demonstration of a large scale solar installation for the partial heating of filling up water of a indoor swimming pool, divert flow, low temperature use.
Expected energy savings were 3.2 TOE/yr.
Season 1984
Monitored period 14.3 - 2.9.84
Energy collected per m2 absorber are 161 KWh/m2, total energy 41,7 MWh an 5.5 toe assuring a furnace efficiency of 75%. Average pre-heating range 10.7 deg. C (K). Total fresh water quantity 3 343 m3. Average solar system efficiency 42.2%. Compared with other solar system the efficiency should be higher as the fresh water temperature is low. The storage tank had to be changed in 1985. the pre-heating of the shower water will be incorporated as well. Up to then, the make-up water comes into the system at peak moments when the filters are backflushed.
The pre-heating of shower water should smooth the tenperature in the solar tank.
The dutch buildings regulations require a double heat exchange between the solar circuit and the pool water which lowers the solar systems efficiency.The dutch building regulations require a double heat exchange between the solar circuit and the pool water which lowers the solar systems efficiency.
The Sportfondsenbad Amersfoort is one of the biggest indoor swimming facilities in Holland, which enjoys a big number of visitors each year (average 620 000 visitors/year) and where numerous national and international swimming competitions take place. The total water surface of the 4 pools (one of which has olympic dimensions of 50 x 21m) is 1540m2.
For hygienic reasons a well defined quantity of water must be regularly replaced by fresh, make-up water . The water to be extracted, before being discharged, is used for flushing the filters. The total water volume thus being exchanged is 270m3/week compared to a total water volume of the 4 pools of 3120m3.
The solar installation of the Sportfondsenbad is only used to heat up the make-up water coming from the public water distribution. As this water is at a relatively low temperature, the solar absorbers work with a very good efficiency.
The solar installation consists of 72 absorber panel's type Robinson's material is polypropylen of 3.6m2 each, totalling 259.2m2 of absorber surface. The total solar overcost is Hfl. 74,995 = 30,000 ECU.
The solar installation including absorbers with a support structure mounted on the roof of the hall, piping, valves and circulation pumps has been installed in early 1982 and is in full operation since April 82.
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DEM - Demonstration contractsCoordinator
5145 PE WAALWIJK
Netherlands