|
 GUPEX® air-to-air
crossflow heat exchangers, made of
glass fiber reinforced plastic, are increasingly cost effective with the escalation of energy prices.
Designed for heat recovery from polluted, moist and corrosive air
and gas emissions and humid flue gas as as well as heat recovery from low temperature air, which is a
substantial energy area largely ignored up until now. Retro–fitting of air-to-air waste heat recovery and heat exchanger batteries in industrial processes has never been more cost effective.
GUPEX® air to air (gas to gas) plate heat exchanger unit are designed for exhaust air handling in dusty environments without air filters to protect them from clogging up the plates. The
GUPEX® technology is used for recovering heat and energy from many
harsh, corrosive, dusty and polluted industrial air and gas processes and environments, including:
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Zinc plating air heat recovery |
|
Galvanizing air heat
recovery |
|
Electro–plating air heat recovery |
|
Air-to-air heat recovery metallurgical processes |
|
Exhaust gas scrubber processes |
|
Exhaust
air heat recovery from galvanizing process |
|
Tumble drying
exhaust air heat recovery |
|
Welding workshop air-to-air
extraction heat recovery |
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Food processing heat recovery |
|
Woodworking processes |
|
Paper Factory
ventilation |
|
Exhaust air energy recovery |
|
Energy efficient dehumidification |
|
Exhaust
gas purification (scrubbing) |
|
Spray drying
heat recovery |
|
Flue gas heat recovery |
TYPE
1 Air-to-air heat exchanger
Plate
module, fiberglass reinforced polyester
Type
G1 Air-to-air (gas to gas) heat exchanger
Air
plate module only, designed for connecting to, and building
into an air handling system.
KEY
TECHNICAL POINTS
Long Life:
GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
| TECHNICAL
DATA |
| Model |
GUPEX
type 1 |
| Type |
Plate
type, air-to-air (gas-to-gas) crossflow |
| Material |
Glass
fibre reinforced polyester |
| Width |
250-5000
mm - depending on air flow volume |
| Height |
1450
mm |
| Depth |
1450
mm |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
150
Pa (at nominal air volume) |
TYPE
1C Air-to-air plate heat exchanger
Plate
module, with sandwich foam core polyester
walls
Type
G1 Air-to-air (gas to gas) heat exchanger
Air-to-air
plate module with polyester sandwich walls, thermally
insulated, designed for connecting to, and building into an
air handling system.
KEY
TECHNICAL POINTS
Long Life:
GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
Casing
walls are thermally insulating, directing the energy exactly
where it is needed.
| TECHNICAL
DATA |
| Model |
GUPEX
type 1C |
| Type |
Plate
type, air-to-air (gas-to-gas) crossflow |
| Plate
Material |
Glass
fibre reinforced polyester |
| Casing
Material |
Polyester
sandwich core foam with laminated glassfibre layers on
both sides |
| Width |
250-5000
mm - depending on air flow volume |
| Height |
1500
mm |
| Depth |
1500
mm |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
150
Pa (at nominal air volume) |
Type
1P Gas-to-gas in industrial processes
Vinylester
plate module in vinyl ester casing
Type
G1P Gas-to-gas (air-to-air) heat exchanger
Heat
exchanger plates and casing made of vinyl ester to operate
in and process gases up to 140°C.
This
heat exchanger has solid laminated flanges on every opening
for connection into a gas and air process flow.
KEY
TECHNICAL POINTS
Long Life: GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
| TECHNICAL
DATA |
| Model |
GUPEX
type 1P |
| Type |
Plate
type, air-to-air (gas-to-gas) crossflow |
| Material |
Glass
fibre reinforced vinylester |
| Width |
250-5000
mm - depending on air flow volume |
| Height |
1600
mm (approx.) excluding flanges |
| Depth |
1600
mm (approx.) excluding flanges |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
150
Pa (at nominal air volume) |
Type
1S Gas-to-gas heat exchanger for ventilation and
flue gas heat recovery
Polyester
plate module in galvanized steel casing
Type
G1S Gas-to-gas (air-to-air) heat exchanger
Air/air
heat
exchanger plates and casing made of polyester to operate
in corrosive and dusty air flows.
The
heat exchanger has air openings made of solid galvanized steel
and with galvanized steel sheet side panels.
KEY
TECHNICAL POINTS
Long Life: GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
| TECHNICAL
DATA |
| Model |
GUPEX
type 1S |
| Type |
Plate
type, air-to-air (gas-to-gas), crossflow |
| Plate
Material |
Glass
fibre reinforced vinylester |
| Casing
Material |
Galvanized
steel |
| Width |
250-5000
mm - depending on air flow volume |
| Height |
1500
mm (approx.) excluding flanges |
| Depth |
1500
mm (approx.) excluding flanges |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
150
Pa (at nominal air volume) |
TYPE
2 Diagonal air to air crossflow heat exchanger
Fiberglass reinforced polyester
plates - diagonal configuration 
Type
G2 Air to air (gas to gas) heat exchanger. Both
gas or air stream enters into a plenum which has tapered walls
defined by the diagonal walls of heat exchanger casing.
The air flows diagonally at an angle through the plates of the
heat exchanger.
Diagonal
plate heat exchangers may be advantageous in many plant
layouts to minimize the number of bends in the air ducts and
reduce the overall pressure drop and installation cost.
TECHNICAL POINTS
Long Life:
GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
| TECHNICAL
DATA |
| Model |
GUPEX
type 2 |
| Type |
Plate
type, air-to-air (gas-to-gas) crossflow |
| Material |
Glass
fibre reinforced polyester |
| Width |
250-5000
mm - depending on air flow volume |
| Height |
2000
mm |
| Depth |
2000
mm |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
200
Pa (at nominal air volume) |
TYPE
3 Air-to-air heat exchanger with two plenums
Air
to air crossflow plate heat exchanger in fiberglass reinforced polyester
with top and lower plenum
GUPEX®
model 3 Air-to-air (gas to gas) heat exchanger.
Built for the most most extreme air atmosphere conditions, offering the advantages of low weight, high mechanical strength, high thermal insulation and high resistance to corrosive air and gas atmospheres. The surface finish of the air or gas heat transfer plates is smooth and easy to clean, making the heat exchanger practically maintenance free.
The
GUPEX®
3
type air heat exchanger body is supplied with plenums with large inspection doors
for easy inspection and cleaning. The heat exchanger casing is made of insulated
polyester sandwich material, limiting heat loss. The casing can also be made of other materials as an option.
Any
condensate can automatically be drained away from a dedicated
drain point at the lowest point in the lower plenum.
GUPEX®
type 3 air to air heat exchanger variant without
top plenum
Where
ducting is not required and the air is being emitted straight
to the atmosphere the
GUPEX® type 3 air/air heat exchanger can be
built without a top plenum. This is less expensive and
reduces pressure drop.
KEY
TECHNICAL POINTS
Long Life:
GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
| TECHNICAL
DATA |
| Model |
GUPEX
type 3 |
| Type |
Plate
type, air-to-air (gas-to-gas) crossflow |
| Material |
Glass
fibre reinforced polyester |
| Width |
250-5000
mm - depending on air flow volume |
| Height |
2900
mm |
| Depth |
1450
mm |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
150
Pa (at nominal air volume) |
Double
and triple gas-to-gas heat exchangers
Double
air-to-air plate heat exchangers for extra heat recovery
Double
configurations are chosen for when a higher degree of heat
recovery is desired. or when there is a big difference between
the hot and cold air flow volumes. The overall thermal efficiency is
higher when the hot and cold air is exchanged twice (or even
three times).
With
the GUPEX® air-to-air heat
exchanger design you are totally flexible with regards to the
positioning of the air and gas ducts.
KEY
TECHNICAL POINTS
Long Life: GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa at nominal air volumes excluding the air plenums.
| TECHNICAL
DATA |
| Model |
Based
on GUPEX
type 2 or 3 |
| Type |
Plate
type, crossflow, air-to-air (gas-to-gas) |
| Material |
Glass
fiber reinforced vinyl ester |
| Casing
Material |
Composite
sandwich core construction |
| Width |
to
fit the required design |
| Height |
to
fit the required design |
| Depth |
to
fit the required design |
| Plate
size |
1400x1400
mm |
| Thickness
of plates |
Approx
1 mm |
| Plate
distance |
Approx
15 mm |
| Pressure
drop |
150Pa
through each plate module;
overall figure individually
calculated |
GUPEX
gas-to-gas plate heat exchangers in gas scrubbing processes
Crossflow
type fiberglass reinforced polyester air air heat exchanger
 The GUPEX®
gas to gas plate heat exchangers are designed for medium-range
temperature areas of flue gasses e.g coal fired power station
processes. The air/air (gas gas) plate heat exchanger is a
viable alternative to the rotating heat exchangers. And with
no moving parts and with its excellent chemical resistance the
plate heat exchanger improves efficiency and pay-back time and
reduce the cost.
Untreated
flue gas enters at 100 - 150°C and is cooled down to 70 - 100°C,
which is below the acid dew point. The clean gas enters
saturated with moisture at 45 - 50°C and is re-heated to
typically 75 - 90°C to give the outlet gas the buoyancy
required to lift it through the chimney. The flue gas at this
stage typically contain fly ash, condensing acid, water with a
high chlorine content, unbleached limestone, remnants of SO2
and SO3 etc. The use of a corrosion resistant high
temperature resistant vinylester plate heat exchanger can
remove the need for large rotating heat exchangers which
typically are made of coated or enameled steel.
GUPEX®
gas-to-gas plate heat exchanger in FGD process
Since
the GUPEX® gas to gas plate heat exchanger has no
moving parts there will be no air leakage caused by the
design of the heat exchanger, so no cross contamination of gas
flows will occur.
The GUPEX®
gas to gas plate heat exchangers are scaleable to suit air and
gas volumes from flue gasses in coal fired power stations (up
to more than one million m³ per hour, or more than 1
million CFM).
KEY
TECHNICAL POINTS
Long Life:
GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
Pre-heating
of the supply air to drying processes
Use
of hot exhaust air to pre-heat burner air
Most
drying processes use heat and air to remove moisture from a
process.
The
moisture is absorbed by the hot air.
The
hot and moist (and extremely energy-rich!) exhaust air is
removed through exhaust gas ducts and chimneys and out into
the atmosphere.
Very
efficient drying indeed!
Or
is it?
Many
companies are blowing tens of thousands of kWh of energy per
year straight into the air.
For
example recovery of 100 kW of heat from exhaust air operating
for 6000 hours per year will with an energy price of say,
$0.02 per kWh, be equivalent to a loss of $12,000 per year.
This
is a totally preventable loss. With the
installation of a GUPEX® exhaust gas-to-gas heat
exchanger the cold supply air to the burner will be pre-heated
directly by the outgoing exhaust gas. And since the cold
air is already pre-heated this way, less energy is required to
heat up the air to the required process temperature.
KEY
TECHNICAL POINTS
Long Life:
GUPEX® air-to-air heat
exchanger is made of corrosion resistant composite
material which gives it a long economic life with low
maintenance cost even under very hostile air conditions.
Large plate distance:
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
Low pressure drop:
A great advantage of the GUPEX® heat exchanger is very low pressure drop, only approx.
150 Pa excluding air chambers at nominal air volumes.
Low pressure drop reduces investment cost and saves energy.
Maintenance
of GUPEX air-to-air heat exchanger
Rugged
Design
 The glass fibre reinforced plastic plates are so robust and
mechanically strong that personnel can walk on the edges on top of the plates whilst inspecting, jet or steam spraying, scrubbing and washing and hosing the plates according to requirements.
The GUPEX plates are made of solid GRP which resists most corrosive and erosive air and gas flows. GUPEX therefore provide many years of operation where regular equipment replacements are the norm.
When the the heat exchanger housing is included in our supply we provide suitable access openings for inspection maintenance and cleaning of the the plate section.
A 14mm gap between the heat
conductive plates enable handling of very dusty air
and particles without getting blocked. Air
filters are therefore normally not needed. If required, cleaning of plates is a very simple to
carry out by e.g. water flushing.
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for more details
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