Open circuit - PME-E

PME-E series is suggested in medium/big size plants, all models K12 version are EUROVENT Certified.

Capacity: from 860 kW to 2,6 MW

Directly coupled axial motor-fan group/s, low installed power, low noise levels

IP56 motors, lockable isolating switch pre-wired to the motor-fan group/s to facilitate the final installation

Casing made of fibreglass reinforced polyester resin (FRP) sandwich panels, thickness 22 mm. Metal frame in hot dip galvanized steel after fabrication (galvanization process in accordance with UNI EN ISO 1461-99 standard, thickness not inferior to 80 micron)

Entirely corrosion–free water distribution system (PVC, PP, PE) equipped with non-clogging PP spray nozzles

Fill pack with different kinds of air/water channels, suitable for the use with different water types

Certified PP drift eliminators (entrainment 0,01%)

Basin with sloping base entirely made of FRP

Every unit is equipped with one or more man-sized access door/s (520x720 mm) or with one or more totally removable walls (1800x2150 mm) for an easy access to the internal components

Technical specifications

LOAD BEARING STRUCTURE in high thickness, hot dip galvanised steel (galvanisation process in accordance with UNI EN ISO 1461-99 standard, thickness not inferior to 80 micron).

CASING consisting of 22 mm thick polyester resin sandwich panels reinforced with fibreglass with gelcoat for UV-protection.
Sealing between the load bearing structure and the panels is guaranteed by a special bituminous sealing gasket.
The tower casing is equipped with FRP man-sized access door(s) in hot-dip galvanised steel after fabrication frame to allow easy inspection and access to the inside of the tower.

Totally removable side-wall(s) (each 2100x1760mm), located on the short side(s) of the PME-E units, can be supplied as an option, to simplify routine maintenance operations to the tower internal components.

PERIMETER FRAME with FILL PACK SUPPORT in high thickness, hot dip galvanised steel (galvanisation process in accordance with UNI EN ISO 1461-99 standard, thickness not inferior to 80 micron). It is located and fixed to the base of the tower body to form a strong structure.
Hot dip galvanized steel after fabrication metal supports are fixed to the frame to support the fill pack.

NUTS AND BOLTS in stainless steel AISI 304.

FAN DECK entirely in FRP, adequately structured and reinforced, with gelcoat for UV-protection.
Every fan deck is equipped with an adequately sized FRP fan ring, with such a shape as to minimise vortex and air pressure drops. The axial fan, directly coupled with the electric motor, is located inside the ring.

AXIAL FAN SYSTEM made of:

  • One or more hot-dip galvanised steel after fabrication motor support(s)
  • One or more propeller fan(s) with blades in plastic material connected to central aluminium hub directly coupled to the motor
  • One or more three-phase electric motor(s), sealed execution (IP56), without ventilation, with back closing shield, multi-voltage (400/690) and multi-frequency (50-60 Hertz), with  tropicalized windings, class F insulation

FAN PROTECTION GRID in stainless steel AISI 304

ELECTRICAL ISOLATOR (lockable), located on the tower casing, for emergency stops, box IP65

DRIFT ELIMINATORS, high efficient, certified by EUROVENT, consisting of three folds PP sheets, thermoformed under vacuum and welded together to form panels of such shape and size as to guarantee maximum efficiency of droplet separation from the airflow drawn by the fan.

WATER DISTRIBUTION SYSTEM made of PN 10 pipes and connectors complete with flanged connection, entirely made of plastic material, consisting in a main header and branches with non-clogging, static type, spray nozzles.
This system grants a perfect and even perfusion of the fill pack, and therefore an optimal performance.
The non-clogging nozzles are made of isotactic polypropylene with full cone (120° angle) spraying.

FILL PACK (or heat exchange surface) consisting of PVC or PP sheets, thermoformed under vacuum and welded together (air/water channels of different kinds suitable for the cooling of different water types).
The shape and the size of the fill pack optimise the contact between air and water, and therefore the heat transfer process.

WATER COLLECTION BASIN entirely in fibreglass reinforced polyester (FRP).
As standard the basins are equipped of a sloping base with rounded corners for easy cleaning operations, complete with flanged water outlet connection(s), drain, make-up and overflow connections.
The basin is a separate component which is fixed to a hot-dip galvanised steel after fabrication frame, which includes the removable FRP louvers.

Special versions

All models are available in the following special versions:

  • ATT – for high temperature water (max. peaks of 80 °C)
  • N – for moderately dirty water with small quantities of suspended solids
  • N-ATT – for moderately dirty water with small quantities of suspended solids at high temperature (max. peaks of 80 °C)
  • GS/GSL – for very dirty water containing high quantities of suspended solids
  • SILENT/SUPER SILENT – different technical solutions to reduce the noise
  • CONTAINER – suitable design for shipment by O.T. sea containers
  • SNOW – materials and solutions for installations in cold places