Danfoss Eco-Damper, ICD damper, ICC Check valve, ICS control valve Data sheet
Data Sheet
Eco-Damper
ICD damper, ICC Check valve
and ICS control valve
(3 valve) system build on the ICV modular concept
The Danfoss Eco-damper solution is a 3
component (3 valve) system build on the ICV
modular concept.
Each component consists of an ICV housing
and 1 of 3 modules performing the functions
Dampening (ICD), Non-return (ICC) and Control
(ICS 1 or 3 pilots) respectively.
The Danfoss Eco-damper solution is used in the
economizer line of typical screw compressors
to dampen the pulsations from the compressor.
The Eco damper system is designed for high
damping eciency over a broad band of low
frequencies with neglectable pressure drop.
It comes in sizes 32 and 50 and is oered from a
parts program giving a wide variety of
connection types and sizes.
The ICD is a unique damping system combining
the Helmholz, Quarter wave and Expansion
chamber principles into a broad band damper,
able to reduce the Ammonia pulsations by 30%
to 80% for critical frequencies in the frequency
range of 100 to 500 Hz.
AI310433586905en-000201
Eco-Damper - ICD damper, ICC Check valve and ICS control valve
Features
• Designed for Industrial Refrigeration applications for a maximum working pressure of 52 bar / 754 psig.
• Applicable to R717 (Ammonia)
• Direct welded connections
• Connection types include butt weld, socket weld and solder connections
• Low temperature steel body
• Low weight and compact design
• The 3 top covers can be turned in any of 4 orientations without aecting the individual functions
• Manual opening of the solenoid valve (ie. the line) possible
• Robust PTFE seat secures long lasting solenoid valve function
• Service friendly design
© Danfoss | Climate Solutions | 2021.12 AI310433586905en-000201 | 2
Description
ICD, ICC, ICS 32
ICD, ICC, ICS 50
Valve body/connection material
Steel
Steel
Connection standard
EN 10220
ANSI (B 36.10)
ANSI (B 16.11)
EN 1254-1
ANSI (B 16.22)
EN 10220
ANSI (B 36.10)
ANSI (B 16.11)
EN 1254-1
ANSI (B 16.22)
Connection type
Butt weld
Socket weld
Solder connection
Butt weld
Socket weld
Solder connection
Min. opening dierential pressure
ICS = 0,07 bar (1 psi)
ICC = 0,04 bar (0.6 psi)
ICS = 0,07 bar (1 psi)
ICC = 0,04 bar (0.6 psi)
Pressure dierential for fully opening of the ICS
and ICC valves
ICS = 0,2 bar (2.9 psi)
ICC = 0,08 bar (1.2 psi)
ICS = 0,2 bar (2.9 psi)
ICC = 0,08 bar (1.2 psi)
Kv (m3/h)
ICC = 16.6
ICD = 17.7
ICC = 40.4
ICD = 39.4
Cv (USgal/min)
ICC = 19.3
ICD = 20.6
ICC = 47
ICD = 45.9
Temperature range
ICD Temp. Range from -20 °C – 150 °C / - 4 °F – 302 °F
ICC Temp. Range from -60 °C – 120 °C / -76 °F – 248 °F
ICS Temp. Range from -60 °C– 120 °C / -76 °F – 248 °F
ICD Temp. Range from -20 °C – 150 °C / - 4 °F – 302 °F
ICC Temp. Range from -60 °C – 120 °C / -76 °F – 248 °F
ICS Temp. Range from -60 °C – 120 °C / -76 °F – 248 °F
Max. working pressure
52 bar / 754 psig
52 bar / 754 psig
Eco-Damper - ICD damper, ICC Check valve and ICS control valve
Portfolio overview
ICD, ICC, ICS 32 & 50
Table 1: Portfolio overview
© Danfoss | Climate Solutions | 2021.12 AI310433586905en-000201 | 3
ICD
ICC
ICS
A
B B
Mass flow direction
Pulsation direction
Compressor
Fixation Rod
Pipe Clamp
Y
Z
Eco-Damper - ICD damper, ICC Check valve and ICS control valve
Functions
Figure 1: Functional diagram
Though the refrigerant ow in the economizer line is towards the compressor, the pulsations moves in the opposite
direction. Due to this phenomenon the sequence of the 3 components is important. Seen from the compressor the
dampening comes rst followed by ow alignment and ow control.
It is equally important to orientate the valve housings with the arrow pointing in the mass ow direction (pointing
towards the compressor).
Distances between the single components are of great importance and recommendations must be followed.
The Eco damper is designed for high eciency dampening of pulsation pressure peeks and creating unidirectional
ow in economizer lines of Ammonia systems.
Depending on the RPM’s and geometry of the typical screw compressor the frequency and amplitude of the
pulsations in the economizer lines will vary.
The ICD damper is specically designed for dampening of the critical Ammonia pulsations in the broad band of 100
to 500 Hz.
A simple calculation will clarify if a certain compressor set-up will result in pulsation frequencies between 100 and
500 Hz and this clarication should be made before considering the Eco damper solution. Please look into the
Selection section.
The ICD is a unique damping system combining the Helmholz, Quarter wave and Expansion chamber principles into
a broad band damper, able to reduce the Ammonia pulsations by 30% to 80% for critical frequencies in the specied
frequency band.
The ICC non-return/check valve is a robust valve optimized to withstand pulsations in the same low frequency band.
The ICC features the ability to reduce small pulsating movements in the wrong direction with an overall low
pressure drop for the main ow direction.
The ICS control valve is the ordinary valve used for allround control purposes. In the Eco-Damper application the 3
pilot version is oered to be able to include more functions like solenoid and/ or pressure control. The solenoid
function is the on/o function for the entire Eco-Damper.
© Danfoss | Climate Solutions | 2021.12 AI310433586905en-000201 | 4
In N/mmAB
X
275.000
375.000
Y
14.000
36.000Z14.000
36.000
In N/mmAB
X
275.000
36.000Y14.000
375.000
Z
14.000
36.000
Equalizer por t
Female Male
Housing size
ICD connection size
ICC connection size
32
DN32
DN32
DN40
DN4050DN50
DN50
DN65
DN65
Eco-Damper - ICD damper, ICC Check valve and ICS control valve
The Eco-Damper solution must be assembled like shown in the above gure with the ICD next to the compressor
followed by the ICC and nally the ICS.
NOTE:
In order to prevent exceeding vibrations caused by the ICD eigenfrequency, pipe clamps for fastening the
ICD must be installed, and the max distances have to be followed (Figure 1: Functional diagram. Pos. A and B
are mandatory). The pipe clamp for pos. A is included in the box. The B pipe clamps and the support must be
strong and robust xation points to help reduce vibrations.
As a guideline the values for stiness of the clamp support can be found in following tables. For reference of
coordinate system see Figure 1: Functional diagram. The pipe clamps at A and B have to provide the
following minimum stiness if the xation rod is pointing in x-direction:
The pipe clamps at B have to provide the following minimum stiness if the xation rod is pointing in ydirection (clamp at A remains unchanged):
Selection
To determine the actual pulsation frequency of a compressor use this formula:
Frequency = RPM (female) * number of grooves (female) / 60 [Hz]
Example: Frequency = 2000 * 6 / 60 = 200 Hz
If 100 Hz < Frequency < 500 Hz dampening is possible with the Eco damper.
Further selection should be based on housing size, connection size and capacity.
Capacity
Once the frequency range is conrmed to be within damper range, the next step is to nd the right valve capacity.
For selection and capacity calculation please refer to Coolselector®2
For application and compressor model conrmation please contact Danfoss.
These criteria should be used for selection.
© Danfoss | Climate Solutions | 2021.12 AI310433586905en-000201 | 5
Eco-Damper - ICD damper, ICC Check valve and ICS control valve
• Complete Eco-Damper solution (ICD+ICC): Lowest pressure drop @ min. and max. capacity
• Check ICC: Pressure drop min. @ minimum capacity (to be outside un-stable area) Check pressure drop max. @
maximum capacity
• Control/solenoid valve: Pressure drop @ min. and max. capacity
• Check control/solenoid valve: Pressure drop min. @ minimum capacity (to be outside un-stable area) Check
pressure drop max. @ maximum capacity
NOTE:
For assistance in relation to selection of right valve capacity please contact Danfoss.
© Danfoss | Climate Solutions | 2021.12 AI310433586905en-000201 | 6
Loading...