The ULH Plus (ULH+) range of ORC power generation modules by Zuccato Energia are the high-powered version of the ULH-range modules, with which they share the vector fluid (hot water) and part of the operating parameters, being able to exploit even 95°C heat sources. They are not simply scaled-up systems, but highly optimized, high-performance units available in versions up to 300 kWE, ideal both for primary energy production in small-scale power plants, including geothermal sources, and for heat recovery from industrial processes wherever a larger thermal energy than the one exploitable by standard ULH modules is available.
Technical Specification Table
| General Specifications | |||
| Model | ZE-200-ULH+ | ZE-250-ULH+ | ZE-300-ULH+ |
| Thermal power input | 2500 kWT | 3050 kWT | 3600 kWT |
| Electric power output | 200 kWE | 250 kWE | 300 kWE |
| System efficiency | 8,0 % | 8.2 % | 8.3 % |
| Vector fluide | Hot water | ||
| Vector fluid input temperature | ≥95 °C | ||
| Vector fluid output temperature | 80°C | ||
| Vector fluid nominal flowrate | 39,68 kg/s | 48,41 kg/s | 57.14 kg/s |
| Working fluid |
Environment-friendly HFC mix | ||
| Skid Dimensions (L x W x H) | 6.2m x 2.6m x 3.2m | ||
| Weight (incl. working fluid) | n/a | ||
| Condensation Stage Specifications | |||
| Type | Brazed plate, in AISI 316 s/s and 99.9% copper | ||
| Thermal power dissipation | 2266 kWT | 2758 kWT | 3249 kWT |
| Cooling water input temperature | 26 °C | ||
| Cooling water output temperature | 31 °C | ||
| Cooling water nominal flowrate | 108.27 Kg/s | 131.75 Kg/s | 155.24 Kg/s |
| Generator Specifications | |||
| Type | Synchronous, permanent magnets, water cooled | ||
| Power output | 200 kWE | 250 kWE | 300 kWE |
| Rotation speed | 15 000 rpm (12...18 Krpm) | ||
| Output voltage | 533 VAC | ||
| Required water cooling | 5 kWT | ||
| Cooling water temperature | < 40°C | ||
| Cooling water flowrate | 10l/min | ||
| Additional cooling (optional) | Working fluid injection | ||
| Gastight up to | PN 6 bar | ||
| Power Converter Specifications | |||
| Type | IGBT, grid-synchronized, air cooled, equipped with braking chopper | ||
| Power output | 200 kWE | 250 kWE | 300 kWE |
| Output voltage | 400 V AC +5% tol. | ||
| Output frequency | 50 Hz +0.5% tol. | ||
| Environment temperature | <40 °C | ||
| Braking chopper | Built-in, resistor-type | ||
| Turbine Specifications | |||
| Tipo | Radial inflow single-stage turbine with fixed nozzles, directly coupled to generator | ||
| Working fluid input temperature | 81°C | ||
| Working fluid output temperature | ∼60 °C | ||
| Stage pressure | PS 4,42 bar (tested up to 10 bar) | ||
| Turbine body material |
Machined, nickel-plated carbon steel | ||
| Impeller material | Aluminium alloy | ||
| Speed control | DC bus voltage feedback loop | ||
| Impeller seal | Sealed labyrinth seal on impeller back | ||
| Generator seal | Sealed axial labyrinth at generator interface (optional) | ||
| Environment seal | Static seals and O-rings | ||
| Working Fluid Specifications | |||
| Working temperature range | 60°C < T <165 °C | ||
| Condensation temperature | ≤ 33 °C | ||
| Operating pressure | ≤ 20 bar | ||
| Toxicity | Atossico | ||
| Biodegradability | 100% | ||
| Impact on ozone layer | None (ozone-friendly) | ||
Although everything possible has been done to ensure that the data shown here are up to date and correct, they must be considered indicative, non-binding and subject to change without notification.
In particular, regarding downloadable content, we advise you to contact our offices to make sure you receive the latest version.







