Heat Transfer Technology ECOTHERM

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ECOTHERM
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Stainless Steel Heat Exchangers
Heat Transfer Technology
Ecotherm's high capacity heat exchanger with patented free floating turbulator rods
Ecotherm heat exchangers with their patented free floating
turbulator rods are the most superior heat exchangers available.
They incorporate all of the advantages and non of the
disadvantages of other types of heat exchangers.
High capacity
Unlike conventional shell and tube heat exchangers,
Ecotherm's high capacity heat exchangers are equipped with
patented free floating turbulator rods for greatly increased
performance. The domestic water flows through the heat
exchanger at high speed, reaching final output temperature in
one single pass through the heat exchanger in less than 1
second.
Turbulent flow, contraflow
The turbulent flow of the thin film of domestic water greatly
increases the surface area mix of water in contact with heat
transfer tubes. Domestic water flows in the opposite direction
of the fluid in the primary circuit, resulting in the highest
possible temperature gradient across the tube walls over the
whole length of the heat exchanger. The exponentially
increased rate of heat transfer, coupled with the fast domestic
water flow speed of approximately 1.5 m/s greatly enhances
the overall performance to size ratio of the heat exchanger.
Compact
Due to increased performance thanks to the patented free
floating turbulator rods, Ecotherm's high capacity heat
exchangers are more compact than conventional shell and
tube heat exchangers.
Built-in anti-fouling
The high speed of water flow and the oscillating action of the
free floating turbulator rods prevent fouling deposits from
collecting in the heat exchanger. This feature ensures
maximum efficiency and optimum hygiene throught the lifelong
service of the heat exchanger.
Easily dismantled
The external configuration and maintenance friendly design of
the heat exchanger ensures minimum down-time for access
and inspection of internal parts.
Lifelong service
Ecotherm quality stainless steel AISI 316Ti ensures lifelong
service. TÜV-approved and certified industrial quality production
exclusively dedicated to stainless steel 316Ti ensures the
contamination-free purity of materials during fabrication.
Waste-gas heat exchanger
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ECOTHERM
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Stainless Steel Heat Exchangers
Heat Transfer Technology
Patented free floating turbulator rods
The free floating turbulator rods are hard wearing and designed
for extremely long life. They fulfil many important functions:
z Efficient heat transfer - The free floating turbulator rods
in the centre of the heat exchanger tubes force thin films
of water to flow along the walls of the tubes. The high water
surface exposure per volume makes efficient heat transfer
possible. Thanks to the fast flow rate, Ecotherm High
Speed Heat Exchangers perform at around 3500 to 5000
W/m² K, which makes even low temperature output from
the boiler perfectly satisfactory for efficient operation.
z Turbulent flow - The free floating turbulator rods constantly
oscillate from side to side. This lateral movement causes
turbulent water flow in the tubes, which is beneficial for
z
z
efficient heat transfer. (Poor mixing caused by laminar
water flow would greatly reduce heat transfer efficiency).
High speed flow - The free floating turbulator rods cause
the water to pass through the heat exchanger at high
speed of approximately 1.6 m/s. This high speed and
turbulent flow prevents lime scale from depositing onto the
walls of the tube. The heat exchanger therefore remains
free of lime scale and maintains maximum efficiency over
a long period of time. (Lime scale deposits would act as
a heat insulator, greatly reducing the rate of heat transfer)
Self cleaning action - The constantly oscillating rods rub
any lime off the walls of the tubes, thus further ensuring
that maximum efficiency is maintained.
ECOTHERM
Oscillating rod
Conventional tube
heat exchanger
Cross section of Ecotherm heat
exchanger tube with oscillating
turbulator rod. High speed
turbulent flow of the thin film of
water in the tubes enables higher
rate of heat transfer.
Cross section of conventional heat
exchanger tube showing laminar
flow of water in the tubes. Poor
heat transfer to water flowing in
centre of tube.
Ecotherm High Speed Heat Exchangers: Fluid in the primary and secondary
circuits flows in opposite directions for maximum overall temperature difference.
Primary 75 °C
innlet
Hot water 60 °C
outlet
Primary
circuit
Contraflow for maximum
overall temp. difference
55 °C Return to
boiler
Secondary
circuit
12 °C Cold water
inlet
Stainless Steel Heat Exchangers
ECO
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ECOTHERM
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Stainless Steel Heat Exchangers
Heat Transfer Technology
Heat exchanger type WT-E
øSF
ECOTHERM heat exchanger with tube DN 8mm
Free floating rods with ø 2,3,4,5,6mm
Material: Stainless steel 316Ti
øPF
1280
øS
=
D
A
=
øP
1110
Dimensions (mm)
H eat
E xch an g er
Typ
Surface
m²
Screw ed type
Flange type
D
P
primary
S
secondary
PF
primary
SF
secondary
A
Weight
(kg)
WT-E020
0,16
27
3/4"
3/4"
D N 20
D N 20
110
3,5
WT-E030
0,43
34
3/4"
3/4"
D N 20
D N 20
125
5
WT-E050
0,84
54
1 1/4"
1"
D N 32
D N 25
150
10
WT-E065
1,38
76
1 1/2"
1 1/4"
D N 40
D N 32
170
16
WT-E080
2,06
89
2"
1 1/2"
D N 50
D N 40
180
24
WT-E100
2,87
114
-
-
D N 50
D N 40
320
42
WT-E125
4,16
140
-
-
D N 65
D N 50
350
65
WT-E150
7
168
-
-
D N 65
D N 50
380
89
WT-E200
11,76
219
-
-
D N 80
D N 65
430
109
WT-E250
18
273
-
-
D N 80
D N 65
490
134
WT-E300
26
324
-
-
D N 100
D N 80
540
159
WT-E350
32,2
358
-
-
D N 125
D N 100
585
185
WT-E - special design for
ECOTHERM High Capacity Water Heater
High Capacity Water Heaters & Boilers
ECOTHERM
®
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www.ecotherm.com
ECOTHERM Austria GmbH, Karlinger Str. 8, A-4081 Hartkirchen, Europe
E-mail:office@ecotherm.at Tel.:+43-7273-6030 Fax:+43-7273-6030-15