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A CHPU generating electricity while supplying thermal heat to a huge under floor heating system |
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CHP generator Backup/booster boiler Buffer Tank(s) Distribution A professional and tidy installation! enlarge |
The overall thermal heat demand for the complete building was calculated at 54kW (-18°C), which is met by: · ecopower CHPU, 12kW thermal output; · gas boiler 60kW (back-up, only) · buffer tank 1,000 litre; · hot water tank 400 litre; · under floor heated area 960 m²; · under floor piping 7,800m = 7.8 km! + up to 4.7 kWe (electric energy per hour) which is supplied into/against the grid; + a considerable reduction of CO2 emission as decentralized electricity generation saves > 60% of CO2 emissions compared to using electricity from the public grid:. In order to ensure the overall efficiency an automatic ventilation unit was installed including an heat recovery system: · rotary heat exchanger 25kW · air volume out-/input 1,000 to 6,000 m³/h · additional heat exchanger 25kW (to pre-warm fresh air at outside temperatures <-3°C) |
Technical
Details By the way: the building described is a communal fire station with public meeting facilities; it is meeting the standards of a 5-litre building. |
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| The CHP unit produces thermal heat and electric power from one fuel source, in this case it is town gas. · CO2 emission from mains electricity is to be calculated at 0.43kg CO2/kWh · CO2 emission from decentralized power generation such as CHP units are calculated at 0.1661kg CO2/kWh Why the difference, the advantage of > 60%!? In contrast to existing power plants the overall efficiency, input minus losses, with the CHPU is rated at approx. 92% where the efficiency of the average main grid power plant is less than 30%(!), depending on the fuel used. In other words approximately 70% of the energy input of a power plant are wastage or losses damaging our climate by heating up air and/or water. More on CO2 you will find here. To complete the calculation... · the operational hours of the CHPU in this project add up to approx.. 3,200 hours/year; · approx. 15,040kWe are generated; emitting approx. 2,500kg (2.5t) of CO2; · while consuming 15,040kWe from the mains would cause approx. 6,467kg (6.5t) of CO2! But this also means... + 15,000kWe not consumed from the mains are saving approx.. € 3,750.00; income for the building, respectively a considerable return on the investment. This project was installed in Germany, so please note that German costs and prices are what the calculations are based on; having said this a UK calculation would just change the financial figures, NOT the figures on CO2 savings. |
IMPORTANT This is why CHP must be included in our future energy policy.  CO2 saving = 4.0 tons ! = > 60% ! saving £ 2,680.00 ! efficiency meets sustainability |
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NEW
rock's blog:
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⇒ model: basement
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⇒ history of CO2
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