System description / Specifications
Cooling tower series KRDU for open-circuit cooling with radial fans
comprising:
The housing and the water collecting tank form a completely assembled
unit. It is made of 2 mm-thick stainless steel sheet. The chamfered
metal sheets are sealed twice with permanently elastic material and
connected with stainless steel screws and washers on both sides. In
order to increase the surface pressure of the sealing system uniformly
KTK stainless steel profile sections are fitted to the flanged housing
connections. An adequately dimensioned inspection opening is located
at the rear side of the cooling tower. A conical adapter is fitted between
the fan and the cooling tower housing to ensure sufficient distance
between the wet area and the fan impeller.
In order to ensure low floor space requirements, the fan is partly
integrated below the filler. This however increases the height of the
cooling tower. The wet area on top is sloped towards the water tank.
Housing and
steel internals
Material: stainless steel, 2 mm thick
The high-performance filler consists of fused PP film structures. They
are distinguished by a very low pressure loss and an excellent heat
exchange. The range of application allows a short-term exposure to
temperatures of 80 °C and is particularly suitable for typical cooling
water.
Filler
Where contaminated and fibre polluted cooling water is concerned
special fillers consisting of form-closed PP film structures are used.
They ensure constant cooling performance even with tolerable
deposition. The resulting pressure loss increases only slightly. The filler
is sufficiently solid for removal in the event of severe contamination
and cleaning for further use.
Heat resistance up to 80 °C maximum.
Material: PP
The mist eliminator is made of UV-resistant plastic material.
Mist eliminator
Heat resistance up to 80 °C maximum.
Material: PP
The water distribution is handled by a stainless steel tube system fitted
with hollow-cone spray nozzles of polypropylene that are insensitive to
clogging. They ensure the uniform distribution of the water even with a
low inlet pressure. Thanks to slip joints, the individual nozzle tubes can
easily be removed for maintenance.
Water distribution
1
As of January 2013
KTK KÜHLTURM KARLSRUHE GMBH ◊ SCHLOSSERSTRASSE 5 ◊ D-76448 DURMERSHEIM ◊ TELEPHONE +49 / 7245 / 91 91 6-0 ◊ FAX +49 / 7245 / 91 91 6 11
COMMERCIAL REGISTRATION: HRB 707954 COURT OF RECORD MANNHEIM ◊ MANAGING DIRECTOR: DIPL.-ING. KARLHEINZ GEIGER, DIPL.-ING. SUSANNE SCHÄTZLE
COMMERZBANK KARLSRUHE ACCOUNT
REG.
NO.:
DE
267426580
◊
227 085 800
TAX
REG.
SORT CODE 660 400 18
NO:
39486/25527
◊
FINANZAMT
VOLKSBANK KARLSRUHE ACCOUNT
RASTATT
◊
101 780 88
KUEHLTURM@KUEHLTURM.DE
SORT CODE 661 900 00
◊
WWW.KUEHLTURM.DE
Water connections
The water inlet and drainage sockets are fitted with stainless steel
flange connections DIN 2642, PN 10. The overflow and drain sockets
have threaded connections. All pipe connections are welded to the
cooling tower housing.
Suction screen
The stainless steel screen is fitted into a frame of the same material
and mounted upstream of the drainage socket inside the cooling tower.
The screen has a mesh width of approximately 5 mm. The frame
prevents vortex effects. The screen frame version suitable for pump
operation is so designed as to prevent the intake of air. You can
remove the screen without any tools for cleaning operations.
Continuous
desalination
The water inlet socket is fitted with a desalination facility of rustproof
material that is accessible from the outside. It allows the adjustment of
the desalination water volume even during operation via a ball cock.
Fans
We use double-active, low-pressure, high-performance fans with
forward curved blades. They are certified in accordance with AMCA
regulations and distinguished by a high efficiency and low-noise
operation. The casing is made of sendzimir-galvanized steel sheet
protected against corrosion by an additional plastic coating. The
cylindrical impellers are statically and dynamically balanced. The
impeller shaft is made of steel with an additional corrosion protection
and runs in grooved ball bearings which are protected against dust and
humidity by means of labyrinth seals.
Subsequent greasing is no problem thanks to corrosion-resistant
lubricating lines accessible from the outside.
The radial fans are driven via small-section V-belts by self-cooling IEC
squirrel cage motors, protection IP 55 minimum, type of construction
B3. All motors are fitted with PTC sensors to protect the motors against
overheating. Motors with direct cooling are not permitted. We use
single-speed motors suitable for FC triggering or Dahlander motors for
two-speed operation. The motor is mounted in a horizontal position on
an easily adjustable motor slide base of stainless steel fitted on top of
the fan socket. Therefore, it is easily accessible for maintenance
operations. The tension of the V-belt is easily adjustable via a central
adjusting screw. The rotary parts of the freely accessible fans are
covered with protective grilles of galvanized steel in compliance with
accident prevention regulations.
The supports fitted to the motor ensure stability when the fixing screws
are loosened.
Drive
2
As of January 2013
KTK KÜHLTURM KARLSRUHE GMBH ◊ SCHLOSSERSTRASSE 5 ◊ D-76448 DURMERSHEIM ◊ TELEPHONE +49 / 7245 / 91 91 6-0 ◊ FAX +49 / 7245 / 91 91 6 11
COMMERCIAL REGISTRATION: HRB 707954 COURT OF RECORD MANNHEIM ◊ MANAGING DIRECTOR: DIPL.-ING. KARLHEINZ GEIGER, DIPL.-ING. SUSANNE SCHÄTZLE
COMMERZBANK KARLSRUHE ACCOUNT
REG.
NO.:
DE
267426580
◊
227 085 800
TAX
REG.
SORT CODE 660 400 18
NO:
39486/25527
◊
FINANZAMT
VOLKSBANK KARLSRUHE ACCOUNT
RASTATT
◊
101 780 88
KUEHLTURM@KUEHLTURM.DE
SORT CODE 661 900 00
◊
WWW.KUEHLTURM.DE
Drive
All pulleys are made of wear-resistant cast steel and fixed with
easily removable taper lock bushes to facilitate repair.
Each fan is driven by a separate motor. In the event of a motor
failure in multi-cell cooling towers, the remaining fans keep on
running thanks to their dedicated drive. This concept ensures a
higher operational safety of the re-cooling system. And if repair is
required, the individual single motors are easier to remove and
handle due to their lower size. There are no special space
requirements for maintenance, e.g. the removal of a shaft.
Fan casing
The stainless steel casing is matched to the cooling tower structure
and fitted with inspection openings sufficiently large for
maintenance operations.
Material: stainless steel, 2 mm thick
The stainless steel casing is matched to the cooling tower structure.
The noise damping screens are designed according to the principle
of absorption. They are made of seawater-resistant perforated
aluminium sheets combined with laminated mineral wool wrapped
in abrasion-resistant, moisture-proof and rot-resistant film.
Supply and exhaust
air sound absorbers
Casing material: stainless steel, 2 mm thick
Protective grilles
including bird
protection grilles
The bird protection grille is part of the fan casing and covers the air
outlet opening of the fan.
If the cooling tower is fitted with supply air sound absorbers the
bird protection grille is fitted to the air inlet openings and has a
mesh width of 25 mm .
Material of protection grille at the air outlet: galvanized steel
Material of protection grille at the air inlet: stainless steel
Exhaust air
maintenance duct
The exhaust air maintenance duct of stainless steel is matched to
the cooling tower structure and fitted with an inspection opening
which is sufficiently dimensioned to allow inspection and
maintenance operations on the spraying system.
Material: stainless steel, 2 mm thick
3
As of January 2013
KTK KÜHLTURM KARLSRUHE GMBH ◊ SCHLOSSERSTRASSE 5 ◊ D-76448 DURMERSHEIM ◊ TELEPHONE +49 / 7245 / 91 91 6-0 ◊ FAX +49 / 7245 / 91 91 6 11
COMMERCIAL REGISTRATION: HRB 707954 COURT OF RECORD MANNHEIM ◊ MANAGING DIRECTOR: DIPL.-ING. KARLHEINZ GEIGER, DIPL.-ING. SUSANNE SCHÄTZLE
COMMERZBANK KARLSRUHE ACCOUNT
REG.
NO.:
DE
267426580
◊
227 085 800
TAX
REG.
SORT CODE 660 400 18
NO:
39486/25527
◊
FINANZAMT
VOLKSBANK KARLSRUHE ACCOUNT
RASTATT
◊
101 780 88
KUEHLTURM@KUEHLTURM.DE
SORT CODE 661 900 00
◊
WWW.KUEHLTURM.DE