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General information |
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| Name |
Wheels India
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| Country installed |
India
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| Address |
Wheels India Limited, Jawaharlal Nehru Rd, Korattur, Chennai, Tamil Nadu, India
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| Industry sector, NACE code |
C28 - Manufacture of machinery and equipment n.e.c.
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| Solar thermal system owner / operator |
Aspiration Energy (ESCO)
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| Solar thermal engineering company |
Aspiration Energy
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| Process integration engineering company |
Aspiration Energy
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| Year of operation start |
2012
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Technical parameters |
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| Collector technology |
evacuated tube collector
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| Collector name |
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| Installed collector area (gross), m² |
1365.0
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| Installed collector area (aperture), m² |
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| Installed collector area (absorber), m² |
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| Installed thermal power (estimated), kWth |
955.5
(Default value calculated by multiplying the gross collector area by 0.7 kWth/m²)
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| Solar collector loop heat transfer fluid |
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| Solar energy storage |
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| Storage volume, m³ |
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| Kind of conventional heat source |
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| Kind of fuel used |
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Process |
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| Solar thermal energy used for |
The solar-heated water at 75 °C is used to degrease the wheels prior to final painting
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| Unit operation |
painting
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| Point of Solar Heat Integration |
B1) Heating of process(es) / process vessel(s)
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| --> Integration how and where |
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| --> Temperature range process |
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| --> Temperature range solar loop (min/max), C° |
75
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Economic parameters |
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| Total investment costs (excl. VAT), € |
176,829.00
(Turnkey costs including solar collectors, piping, support construction, storage, design, commissioning reduced with subsidies)
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| Solar loop (excl. VAT), € |
(Solar collectors, piping, support construction)
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| Solar energy storage (excl. VAT), € |
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| Others (excl. VAT), € |
(Design, commissioning, others)
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| Process integration (excl. VAT), € |
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| Subsidy, € or % of total investment costs |
79268
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| Cost for fuel replaced, €/MWhfuel |
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| Calculated solar thermal system life time, a |
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| Annual useful solar heat delivery, MWh/a |
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| Specific annual useful solar heat delivery, MWh/am² |
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| Specific investment costs, €/m² |
129.55
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| Solar fraction, % |
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Lessons learned |
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| Initiative |
Wheels India thought the ESCO concept to be very attractive for minimising costs and risks. The total investment of INR 21 million was financed fifty-fifty by the ESCO and Wheel India, the owner of the solar system (see the table below). The wheel producer refinances his investment of INR 10.5 million through accelerated depreciation (INR 6.5 million) and by subsidies of INR 7.5 million from different sources.
Aspiration Energy, on the other hand, is refinancing its loan through a 5-year-contract in which the wheel manufacturer agreed to pay 70 % of the saved oil costs to the ESCO in order to cover loan payments. Annual savings are estimated to be close to INR 0.4 million per month, assuming 300 days of normal sunlight. Aspiration Energy will receive 60 times INR 0.28 million over the term of the contract, which adds up to INR 16.8 million. The revenues cover the costs for the loan, interest, maintenance and profit.
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| Integration methodology |
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| Crucial Interfaces |
The mounting on the factory roof was a real challenge, as we had to come up with an intelligent structural design to ensure leak-proof perforation on the truss roof and distributed weight with less than 40 kg per m².
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| Construction / Commissioning |
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| Operation / Performance |
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| Recommendations |
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SHIP Plants
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