STELLAR ENERGY IN ACTION
Air emission requirements are becoming increasingly restrictive and are gradually being extended to more cities. At Dagartech, we assist in the study and selection of engines that strictly comply with these requirements.
Installation locationGandesa, Tarragona (Spain) // Perafort, Tarragona (Spain)
Power of the sets,Power of the sets1 x 1,100 kVA // 1 x 650 kVA
Installed generators setsTrade reference: 1 x DGCS 1100 ST // 1 x DGVS 650 ST
The resource recycling plant required the design, development, manufacture and installation of a turnkey High Power generator set.
In both cases, the installation of generators was required to cover the power and usage needs of the loads present in the facilities, and to do so based on efficiency criteria, guaranteeing the lowest possible fuel consumption.
An important requirement was added to both projects: to comply with the emission levels imposed for industrial activities by the town councils of Gandesa and Perafort.
In order to carry out a correct sizing of the power needs of both installations, a double procedure was undertaken:
Result graphs of the maximum values of apparent power, active power and current per phase.
The power required for the Gandesa recycling plant was sized at 1,000 kVA in ongoing operation; 600 kVA in the case of Perafort
In order to comply with the emission requirements, the next step was to study the different options available on the market that could, on the one hand, cover the sized power and, on the other, strictly comply with the restrictions on atmospheric emissions.
As an example, these restrictions set the emission limits as mandatory for the Gandesa project shown in the table:
| Pollutant | Emission limit | Measurement method |
| SO2 | 180 mg/Nm3 | UNE-EN 14791 or UNE 77216 or UNE 77226 |
| NOx (expressed as NO2) | 4,000 mg/Nm3 | IT-AT-22 or UNE-EN 14792 or EP 7 |
| CO | 650 mg/Nm3 | IT-AT-22 or UNE-EN 15058 |
| Opacity | 5 – Bacharach | ASTM-D2156-94 |
At this stage of the project, the engines that met the power and emissions requirements were selected
After narrowing down the alternatives that could meet the two key requirements, their fuel consumption levels were studied, so that the most efficient engine was prioritised in both projects.
Finally, it was decided to include the Cummins QST 30-G4 engine in the generator set at the Gandesa plant. This engine was imported from the United States to meet emissions requirements. In the case of the Perafort plant, the best alternative was a Volvo TAD 1642 GE.
