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ULH+ - series ORC Modules
Low Temperature, high power

ULH Plus

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.

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