Objective
Work has been carried out in order to incorporate a photovoltaic motor pump set within an existing solar water heating scheme. The match between a high performance direct current motor pump, the photovoltaic array and the solar water heating scheme has been investigated and the performance of the system has been monitored.
2 different types of direct current motor were tested, a printed armature permanent magnet motor of lightweight construction and a standard direct current permanent magnet motor of heavy duty construction. There was a performance advantage to using the heavy duty motor which also suffered less in the humid conditions of the preheat tank room. The increased performance of the heavy duty motor was attributed to its greater inertia which made it more closely matched to the temperature inertia of the evacuated tube array.
The principle of the photovoltaic powered pump to save power and provide independence from mains power supplies proved easy to implement. The best overall option for cost and performance was a combination of a standard motor and a cheap moulded plastic pump.
A photovoltaic pumping system for advanced solar heating of domestic hot water has been monitored.
The evacuated tube array revealed a greater than expected number of vacuum failures. Calculations, based on a comparison of manufacturer's data with temperature and flow data, reveal that the array performance is reduced by around 61%.
Inspection of the printed armature motor showed brush wear consistent with nonarduous duty, although some armature wear had occurred and some corrosion of end plates and bearings was detected. Data was also collected for a heavy duty motor pump combination and a direct relationship can be shown between the motor speed and the array flow and the insolation level.
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
WD6 1RX Borehamwood
United Kingdom
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.