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Tundra
Refrigeration Air Dryers
FOR
W
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20A1H4
IGH
ULTR
IENCY
EFFIC ANGER
EXCH
HEAT
Hi-line Industries Tundra Technical Specifications
Tundra Refrigerant Air Dryers
The new generation of Hi-line Fridge Dryers has been
designed with energy efficiency and reliability at the
forefront.
Minimal energy consumption is crucial in today’s
competitive environment, the new Tundra dryer from Hiline will help drive down your energy costs by minimising
pressure drop and lowering absorbed power. The Direct
Expansion technology offers a constant +3°C dewpoint
at all times, unlike chilled mass dryers which can be as
high a +10°C during its thermal cycle.
The new single cell heat exchanger gives the most
efficient transfer of heat at the lowest energy cost. By
using proven worldwide components within the Tundra
refrigerant system reliability is ensured. It also features
within that refrigerant system, liquid receivers, line
dryers, thermostatic expansion valves and a series of
safety features to protect the Freon compressor and its
components. The Tundra range has been designed to an
engineering specification rather than a budget.
Larger dryers up to 9988 cfm are available on short
lead-time, although our standard range as featured
here are available ex-stock at our Burton factory for
next day delivery.
Fridge
Model
cfm
m3/hr
m3/min
Conn
Weight
Kg
Dimensions
H x L x W mm
Power
Supply
Refrigerant
Tundra 21
Tundra 36
Tundra 50
Tundra 68
Tundra 90
Tundra 120
Tundra 159
Tundra 210
Tundra 295
Tundra 409
Tundra 465
Tundra 600
Tundra 770
Tundra 1020
Tundra 1330
Tundra 1605
21
36
50
68
90
120
159
210
295
409
46
600
770
1020
1330
1605
35
62
84
115
153
204
270
356
500
694
788
1016
1305
1711
2253
2720
583
1019
1415
1925
2548
3400
4502
5946
835
11581
13116
16990
21803
28883
37660
45448
½”
½”
½”
¾”
1”
1”
1½”
1½”
1½”
1½”
1½”
2”
2 ½”
3”
3”
DN100
23
26
28
37
39
43
47
90
95
130
150
173
175
300
300
330
365x455x500 mm
365x455x500 mm
365x455x500 mm
410x560x550 mm
410x560x550 mm
350x540x1010 mm
350x540x1010 mm
440x600x960 mm
440x600x960 mm
590x910x1220 mm
590x910x1220 mm
590x910x1220 mm
590x910x1220 mm
740x1410x1490 mm
740x1410x1490 mm
740x1410x1490 mm
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
230 / 1 / 50
400 / 3 / 50
400 / 3 / 50
400 / 3 / 50
400 / 3 / 50
400 / 3 / 50
R134A
R134A
R134A
R134A
R134A
R407C
R407C
R407C
R407C
R407C
R407C
R407C
R407C
R407C
R407C
R407C
Standard Reference Conditions (in accordance to ISO 7183)
Inlet compressed air pressure: 7 barg
Inlet compressed air temperature: 35°C @ 100% RH
Ambient air temperature: 25°C
Minimum pressure dew point (PDP): 3°C Class 4 (ISO 8573-1)
Capacity Correction for Various Operating Pressure
Pressure - barg
Factor (Pc)
4
1.25
5
1.14
6
1.06
7
1
8
0.96
10
0.9
12
0.86
14
0.82
16
0.8
Ambient Temperature - °C
Factor (Ac)
10
0.92
15
0.92
20
0.92
25
1
30
1.07
35
1.14
40
1.22
43
1.28
45
1.34
Inlet Temperature - °C
Factor (Lc)
20
0.85
25
0.85
30
0.85
35
1
40
1.18
45
1.39
50
1.67
55
1.8
60
1.99
High Pressure and Thermal Mass are available to order,
as is a full range of high performance oil and particle
filters to suit each dryer.
General Information
•
•
•
•
Ultra High Efficiency Heat Exchanger
The main part of the refrigeration air dryer is the heat
exchanger. This compact aluminium module contains
the various stages for the treatment of compressed air.
1

AIR
INLET
NEW
2
REFRIGERANT
OUTLET
AIR
OUTLET
3
REFRIGERANT
INLET
4
CONDENSATE OUT
Hi-line Industries Ltd.
5 Crown Industrial Estate
Oxford Street
Burton-upon-Trent
Staffordshire
DE14 3PG
E.&.O.E
1 Air/air exchanger where the first phase is carried out.
In this section the air coming in is pre-cooled and the air
going out is post-heated. This allows the reduction of the
energy consumption of the chiller circuit and reduces the
possibility of condensate forming on the outer surface of
the pipe leaving the dryer and the compressed air network.
2 Flow mixing chamber Unlike other exchangers on the
market, the module that we have designed has a flow
mixing chamber at the outlet of the air/air exchanger.
This passage is very important because the air
temperatures at the outlet of the air/air exchanger
channels are not stable. Mixing enables the air flow to
enter the evaporator channels at a uniform temperature,
thus allowing optimum exchange.
3 Evaporator The air now pre-cooled in the air/air exchanger
and mixed in the mixing chamber enters the evaporator
and is cooled to dew point. The heat is transferred to the
cooling fluid which evaporates.
4 Demister The air cooled in the evaporator passes through
a demister separator which allows the condensate to
drain into a large collecting chamber. The geometry of the
module and of the demister allows load loss values to be
kept low.
50
1.39
•
.
•
•
•
Operating pressure range 2 to 16 barg.
Maximum inlet air temperature 60°C
Ambient Air temperature : 0°c to 50°c
Constant +3°C dewpoint delivered at all
times, unlike thermal dryers.
High pressure range available with pressure
up to 50 barg.
Dewpoint Indicator as standard, digital on
larger models.
Illuminated “Power On” switch
Option of Zero Loss or HTD condensate
removal.
Example of dryer selection:
Which dryer is required to handle the following
worst case conditions?
Maximum compressed air flow of 9 m³/min
Lowest operating pressure of 10 barg
Maximum air inlet temperature of 40°C
Maximum ambient air temperature of 35°C
Corrected Capacity is:
Actual Capacity / (Pc * Ic * Ac) = 9 m³/min / (0.9 *
1.18 * 1.14) = 10.89 m³/min
Dryer Selection is: Tundra 409 for a +3°C PDP
Tel: 01283 533 377 Fax: 01283 533 367
Email: [email protected]
www.hilineindustries.com
All specifications and details are subject to change without prior notice.

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