Objective
To produce heat and electricity from a mini-hydro power station for the normal needs in electrical energy, heating and sanitary hot water for a tourist hotel comprising 16 rooms.
a) FILTER: Built between 1.2 and 1.3.80 and operating satisfactorily. The cleaning sequences can be programmed from 1 minute to 6 hour sequences.
The problem remaining is the one of pebbles carried by high waters which can build up at the base of filter. Alterations were made to the bottom of the culvert and a collecting net will be installed. The net will be emptied on a regular basis.
The plan to automate the cleaning has been dropped as high water and ice formation lead to special problems which cannot be coped with by an automatic system.
b) EVAPORATORS: These were submerged on 27.5.80 and have operated without problems ever since. Dirt accumulation has occurred but the builder has since built new protection devices and plastic supports will be added in summer 81.
c) TURBINE: The bottom of the culvert was cemented in 1980. The overhead electrical cable was suppressed for reasons of aesthetics and replaced by a low tension circuit breaker linked into the public network.
d) HEAT-PUMPS: Installed end of Jume 1980 and operating for hot water since 6.7.80 and for the heating since September 80. They are monitored by a thermostat which switches on first the compressor Nr. 2. The other of the compressors can be reversed to equalise their working lives.
The equipment consists of the following :
- an 80 hp hydraulic turbine (3m3/sec with a 2.5 m fall), driving a 60 kVA alternator connected in parallel to the public network.
The following equipment has been installed around this turbine :
- upstream: a filter with mechanical cleaning to ensure a continuous operation.
- downstream: a group of 3 heat pumps (water/water) generating 105 kW at the condensors, of which 2 pumps for the heating system and one for the hot water production. Their compressors are driven by the alternator current.
- inlet canal to the turbine: 3 evaporators for the freon R22 of the heat pumps using the running water of the river to save energy.
The total cost amounts to FF 340,000 for which a subsidy of FF 70,350 is granted by the E.C. Commission.
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Coordinator
67570 ROTHAU
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.