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Tank Heating Eductors |
| 3 Web Body-Nozzle Provides Maximum Spacing for Superior Suction Flow |
| Superior Performance comes from a Superior Design - Up to 5 to 1 Entrainment. We have No-Equal! |
| Now Available with Edathon coating, the strongest of all the fluoropolymers! More Details |
 There are many advantages to using eductors for heating liquids in open vessels. These give the vessel heating eductor a place as a viable option for heating in many types of vessels.
The eductor heater provides direct contact of the steam into the liquid. This assures complete transfer of the energy in the steam into the liquid being heated. Other types of heating lose efficiency as the interior of the heat exchanger builds up a scale. With eductors, the velocity of the steam being injected into the vessel also causes the liquid contents of the vessel to be agitated while heating occurs, without the need for other types of mixers in the vessel. This provides for more even heating of the vessel contents. They also permit the steam to be dispersed over more of the liquid volume, resulting in a more homogenous heating than with other methods of injecting steam.
These designs of eductors allow steam to be used from 10 to 140 PSIG for heating. Because of the nature of direct steam injection, heating vessels at atmospheric pressure beyond 140° F should not be attempted. Exceeding this temperature could result in uncondensed steam evolving from the liquid. |
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| Tank Eductor (TLA) Features: |
 Computer optimized flow paths enable the Jacoby Tarbox TLA to maintain a high "pick-up ratio" (the ratio of fluid entrained to the motive fluid) while maximizing the hydraulic efficiency (the ratio of hydraulic power at the outlet of the TLA to the hydraulic power at the inlet) to generate an optimum flow field from the greatest flow amplification.- No moving parts in the eductor, minimizing maintenance expenses.
- Optimum flow field enables more activity within the tank than competitive units without changing pumps.
- Compact design and ease of mounting keeps the TLA from interfering with other tank equipment.
- "In-tank" mounting eliminates need for costly, complex mounting structures above tanks.
- The TLA can be used in a wide variety of open vessels or closed tanks.
- Eliminates stratification and promotes a homogenous tank with relation to pH, temperature, solids or gas dispersion, and distribution of chemicals.
- Produces a unique agitation not available with other types of mixers, as the TLA can generate a directed flow field within the fluid being mixed including viscous fluids, slurries, and suspensions.
- Easily mixes liquids of differing specific gravities and is excellent for scrubbing applications where a lower specific gravity fluid is driven into the higher one.
- Flow amplification due to high "pick-up ratio" and hydraulic efficiency permits the use of smaller pumps, which translates to reduced costs of mixing or agitation.
- Reduces investment cost because existing transfer pumps can be utilized for more than one purpose.
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 Excellent Corrosion Resistance- Excellent Abrasion Resistance
- 300° F Continuous Service
- Good Non-Stick Characteristics
- Excellent Dielectric Insulation
- Radiation Resistant
This coating is applied via electrostatic powder spray or fluidized powder bed. In addition to possessing the high chemical and temperature resistance which all fluoropolymers are noted for, Edathon's strengths, radiation resistance, wear resistance, and creep resistance are significantly greater than those of other fluoropolymers such as PTFE, FEP, or PFA. Details about our Edathon Coating |
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| New Superior Design: |
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| Models for Heating Vessels |
 The standard Jerguson/Jacoby-Tarbox models for
heating in vessels are the TLA and ULJ. The model TLA is well
suited to providing strong tank agitation while heating.
Compared with other heaters, the cost per application is small.
The model ULJ is designed to provide vigorous circulation of
the liquid with low pressure steam inputs.
TLAs should be located with the outlet pointed toward the
most remote portion of the tank to provide the best agitation
possible. Larger Image of Manifold |
| Sg = Specific gravity of tank liquid |
| Sh = Specific heat of tank liquid |
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How to Size Eductors for
Heating Vessels |
Information needed to size includes the following: |
| What is the tank liquid? (If it is not water (Sg
=1.0, Sh =1.0), contact us.) |
| What temperature rise (AT) is needed? |
| What is the final tank temperature? |
| What is the vessel capacity? |
| Time available to heat the vessel (t)? |
| Steam pressure available? |
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| Step 1 To determine the amount of
steam required to heat the liquid in the vessel, multiply the gallons
in the vessel to be heated x 8.33 x Sg x Sh x temperature rise ΔT
desired, divided by 1100 (BTUs per Lb steam). Lb steam
required (Wm) = Gal x 8.33 x Sg x Sh x ΔT/1100 |
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| Step 2 To calculate the flow of
steam required per minute, divide the steam flow from Step 1 by
the time you need to complete the heating process. Lb steam
per minute (Qm)= Wm/minutes (t) |
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| Step 3 If multiple units are going
to be used, divide the number from Step 2 by the number of units
to be used. |
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| Step 4 Go to the TLA Steam Flow
table. Find the amount of steam flow Qm (Lb/Min) at the steam pressure
available. This is the steam flow for a 1-1/2" unit. Take
the steam flow obtained in Step 3 divided by the steam flow from
the Steam Flow table. This will give the Sizing Factor (S.F.) needed
to heat the vessel in the time required. |
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| S.F. = Desired Steam Flowrate/ saturated Steam
Flowrate |
| Step 5 Choose the eductor size that
has at meets or exceeds the number determined in Step 4 |
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| Example: |
- The liquid in the vessel is Water (Sg =1.0)
- The temperature rise desired is ΔT = 50°F
- The final tank temperature is 120°F
- The vessel holds 550 gallons
- The time to heat it is 20 minutes
- Steam is available at 40 psig
- Use two model TLAs
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| Step 1 Wm = 550 x 8.33 x 1.0 x 50/1100
= 208 Lb of steam required |
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| Step 2 Qm = Lb steam per minute
= 208/20 = 10.4 Lb steam per minute |
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| Step 3 Are multiple units going
to be used? If so how many? In this case, we will use two eductors.
10.4 Lb steam per minute/2 = 5.2 Lb/min per eductor |
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| Step 4 S.F. = 5.2/13.4 = .39 desired
S.F. |
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| Step 5 Choose the model TLA 3/4" with
a S.F. of .50 as this is the smallest unit that meets or exceeds
the desired S.F. |
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Calculating Actual Performance |
| Qm per unit = 13.4 x.50 = 6.7 Lb/Min |
| Qm for installation = 6.7 x 2 =13.4 Lb/Min |
| Time to heat tank = 208 Lb (Step 1)/13.4 = 15.5 minutes |
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| If two TLAs (3/4" size) are installed and operated
at 40 psig of steam pressure, they will heat the liquid in 15.5
minutes. |
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| TLA |
Steam Flow, Qm (lb/Min) |
1-1/2" Unit |
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10 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
Steam
Flow, Qm (lb/Min) |
6.4 |
8.8 |
13.4 |
18.3 |
22.8 |
27.4 |
31.9 |
36.5 |
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| TLA Heater Performance
Chart - Volume of Liquid Heated Per Minute, Qm (GPM) |
| Size |
ΔT* |
10 PSIG |
20 PSIG |
40 PSIG |
60 PSIG |
80 PSIG |
100 PSIG |
120 PSIG |
140 PSIG |
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25 |
8.5 |
11.6 |
17.7 |
24.2 |
30.1 |
36.2 |
42.1 |
48.2 |
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50 |
4.2 |
5.8 |
8.8 |
12.1 |
15.1 |
18.1 |
21.1 |
24.1 |
| 3/8" |
75 |
2.8 |
3.9 |
5.9 |
8.1 |
10.0 |
12.1 |
14.0 |
16.1 |
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100 |
2.1 |
2.9 |
4.4 |
6.0 |
7.5 |
9.0 |
10.5 |
12.0 |
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125 |
1.7 |
2.3 |
3.5 |
4.8 |
6.0 |
7.2 |
8.4 |
9.6 |
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25 |
16.9 |
23.2 |
35.4 |
48.3 |
60.2 |
72.4 |
84.2 |
96.4 |
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50 |
8.5 |
11.6 |
17.7 |
24.2 |
30.1 |
36.2 |
42.1 |
48.2 |
| 3/4" |
75 |
5.6 |
7.7 |
11,8 |
16.1 |
20.1 |
24.1 |
28.1 |
32.1 |
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100 |
4.2 |
5.8 |
8.8 |
12.1 |
15.1 |
18.1 |
21.1 |
24.1 |
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125 |
3.4 |
4.6 |
7.1 |
9.7 |
12.0 |
14.5 |
16.8 |
19.3 |
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25 |
33.8 |
46.5 |
70.8 |
96.7 |
120.4 |
144.7 |
168.5 |
192.8 |
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50 |
16.9 |
23.2 |
35.4 |
48.3 |
60.2 |
72.4 |
84.2 |
96.4 |
| 1-1/2" |
75 |
11.3 |
15.5 |
23.6 |
32.2 |
40.1 |
48.2 |
56.2 |
64.3 |
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100 |
8.5 |
11.6 |
17.7 |
24.2 |
30.1 |
36.2 |
42.1 |
48.2 |
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125 |
6.8 |
9.3 |
14.2 |
19.3 |
24.1 |
28.9 |
33.7 |
38.6 |
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25 |
67.6 |
93.0 |
141.6 |
193.3 |
240.9 |
289.5 |
337.0 |
385.6 |
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50 |
33.8 |
46.5 |
70.8 |
96.7 |
120.4 |
144.7 |
168.5 |
192.8 |
| 2" |
75 |
22.5 |
31.0 |
47.2 |
64.4 |
80.3 |
96.5 |
112.3 |
128.5 |
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100 |
16.9 |
23.2 |
35.4 |
48.3 |
60.2 |
72.4 |
84.2 |
96.4 |
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125 |
13.5 |
18.6 |
28.3 |
38.7 |
48.2 |
57.9 |
67.4 |
77.1 |
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25 |
155.5 |
213.8 |
325.6 |
444.6 |
554.0 |
665.8 |
775.1 |
886.9 |
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50 |
77.8 |
106.9 |
162.8 |
222.3 |
277.0 |
332.9 |
387.5 |
443.4 |
| 3" |
75 |
51.8 |
71.3 |
108.5 |
148.2 |
184.7 |
221.9 |
258.4 |
295.6 |
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100 |
38.9 |
53.5 |
81.4 |
111.2 |
138.5 |
166.4 |
193.8 |
221.7 |
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125 |
31.1 |
42.8 |
65.1 |
88.9 |
110.8 |
133.2 |
155.0 |
177.4 |
| 4" ** |
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| 6" ** |
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| 8" ** |
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| 10" ** |
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| *ΔT = Temperature Rise |
| ** Figures can be provided upon request. |
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| Tank Eductor
Dimensions: |
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| Size |
Dimension A |
Dimension B |
Dimension C |
Dimension D |
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IN |
(mm) |
IN |
(mm) |
IPS |
(mm) |
IN |
(mm) |
| 3/8 |
5.00 |
(127) |
2.50 |
(64) |
3/8 MNPT |
(10) |
.50 |
(12) |
| 3/4 |
7.25 |
(184) |
3.69 |
(94) |
3/4 MNPT |
(20) |
.81 |
(20) |
| 1-1/2 |
10.88 |
(276) |
5.50 |
(140) |
1-1/2 FNPT |
(40) |
1.12 |
(28) |
| 2 |
14.50 |
(368) |
7.69 |
(195) |
2 FNPT |
(50) |
1.62 |
(41) |
| 3 |
22.00 |
(559) |
11.75 |
(298) |
3 FNPT |
(80) |
2.50 |
(63) |
| 4 |
25.00 |
(635) |
12.00 |
(305) |
4 FNPT |
(100) |
3.00 |
(76) |
| 6 |
35.00 |
(889) |
25.00 |
(635) |
6 FNPT |
(150) |
4.50 |
(114) |
| 8" |
Dimensions Provided Upon Request |
| 10" |
Dimensions Provided Upon Request |
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| Specifications: |
Standard materials TLA's are cast or fabricated
in: bronze, 316 stainless and carbon steel. Cast units range
from IPS 3/4 to 2. Larger sizes and other materials are fabricated.
Consult the factory for details.
Standard body connection for 3/8 and 3/4 units is male NPT
and for 1-1/2 through 3, female NPT. Over 4" is flanged. Optional connections include
female/male NPT, butt weld, socket weld, VictualicTm, sil-braze,
and flanged. |
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| Related Links: |
| Request
Pricing |
| Typical
Arrangement of Eductors for Tank Agitation & Mixing |
| Larger
Picture Of Our Model TLA |
| Download
PDF Bulletin for TLA (PDF File 321kb) |
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| Previous Page |
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