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GAP 50-3-3 Recuperator/ Technical datasheet

Exchanger type : Gas to Compressed air Gas to Liquid Compatible with phase change Recovered thermal power from 100 to 900 kW from 200°C to 700°C Flow range from 2000 to 8000 Nm³/h Local pressure resistance up to 16 bars at 250°C

GAP 50-3-3: the answer to most heat recovery concerns

The GAP 50-3-3 recuperator has been the first Secondary standard product to be developed within the GAP range. fluid - cold Exchangers in line: Its features have been finetuned to allow it to answer most waste heat recovery needs within a large power If the drop in pressure on the fumes, calculated from the graph, is lower than the range from 100 to 900 kW. The 3 mm gap between plates GAP-type Recuperator acceptable value for your system, it is then possible to recover more heat by using together with the overall size of this heat recuperator Secondary a second exchanger in line with the first one. make it fit with many kinds of applications involving fumes fluid - hot The pressure drop on the fumes is then double the initial value. In this case, please or gas. The GAP 50-3-3 has been specially designed to fit contact us for an estimate of other values. within DN500 (20”) chimney ducts.

Primary fluid Fumes WHY THE GAP HEAT RECUPERATORS Notes: The ACTE GAP-type heat recuperators are at the cutting edge of small-size waste heat technology. Thanks to the combination of performance, 1. The graphs shown above give the possibility of drawing up an initial technical validation from the values of reliability and compactness, the GAP-type heat recuperators make waste heat your thermal energy source. Please note that you are welcome to contact us for further technical details. recovery within reach of all industrial processes. Size and weight: the combination of plates and pipes 2. For any sizing where hot gas is used to reheat the air or for generating steam, please contact us directly. Plate exchangers are much smaller and lighter than pipe exchangers. ACTE’s GAP exchangers are manufactured using a clever mix of pipes and plates, allowing a closed volume in which a liquid can flow, providing a much larger surface area for the same length: the doublet. » Exchange surface of a 1” pipe: 0.08 m² per m ACTE-SA » Exchange surface of a doublet: 0.8 m² per m Rue Gilles Magnée, 92/1 Thanks to this, GAP recuperators allow energy optimisation on smaller size processes for which casual 4430 Ans solutions are not suitable. Belgium Pressure drops and particles: the benefits from the «gap» between plates Tel : +32 4 247 11 24 The bright idea reagarding the GAP technology is the space offered between each turn of plate. Thanks Fax : +32 4 247 21 87 to this, the fumes path goes easily through the and the heat recovery is made with low [email protected] impact on the industrial process. Heat exchanger overview

Mechanical features: Size and weight: Primary exchange surface: connexion on the Primary side: DN300DN500 LenghtProjected of surface:the surface: 14.22 9700 m² mm Duct connexion on the Secondary side: DN32DN50 Gap between plates: 23 mm Overall dimensions: Ø323.9Ø512 x 880x 840 mm mm Weight: 5090 kg

Technical features: To estimate your recuperator performances, please apply the following steps. First of all, please refer to the column corresponding to the chosen (water or thermal oil).

1. 6000 Nm³/h Then apply the 5-stages procedure below:

1. Trace a vertical straight line through the two graphs corresponding to the available gas (fumes) flow rate. 2. 470 kW 2. Depending on the temperature of the fumes, read the 3. 3108 Pa thermal power recovered on the left axis. 3. Read the pressure drop on the gases (fumes) from the blue curve and the right axis. 4. On the bottom graph, read the water flow rate on the left File:2016_03_03 GAP 50-3-3 Gas to Water.EES 17/03/2016 16:31:26 Page 2 EES Ver. 10.036: #2773: 5-user license, ACTE s.a., Belgium axis from the curve corresponding to the temperature of the

Water side pressure drop [Pa] gases (fumes). 0 5000 10000 15000 20000 25000 30000 35000 20 Fumes @ 600°C 5. Read the pressure drop on the water on the top axis from 18 Fumes @ 450°C Fumes @ 300°C the blue curve (pressure drop). 16 Pressure drop 5.10139Pa

14 /h] 3 124. 10 m³/h Example: 10 Let’s consider an application where the available fumes Water flow rate [m rate flow Water 8 flow rate is 6000 Nm³ per hour and the temperature is 6

4 450°C:

2 » The power recovered is therefore 470 kW

0 1500 2500 3500 4500 5500 6500 7500 8500 » The pressure drop on the fumes is 3108 Pa Fumes flow rate [Nm3/h] » The corresponding flow rate is 10 m³ per hour » The pressure drop on the water is 10139 Pa Water with 20% glycol Thermal oil

Pressure Drop Zone on Fumes Pressure Drop Zone on Fumes

File:2016_03_03 GAP 50-3-3 Gas to Water.EES 17/03/2016 16:31:26 Page 2 File:2016_02_17 GAP 50-3-3 Gas to oil.EES 17/03/2016 16:28:49 Page 2 EES Ver. 10.036: #2773: 5-user license, ACTE s.a., Belgium EES Ver. 10.036: #2773: 5-user license, ACTE s.a., Belgium

Water side pressure drop [Pa] Oil side pressure drop [Pa] 0 5000 10000 15000 20000 25000 30000 35000 0 10000 20000 30000 40000 20 25 Fumes @ 600°C Fumes @ 300°C 18 Fumes @ 450°C Fumes @ 600°C Fumes @ 450°C Fumes @ 300°C Pressure drop 16 Pressure drop 20

14 /h] 3 /h]

12 3 15

10 Secondary Side

Water flow rate [m rate flow Water 8 10 Secondary Side Water flow rate [m rate flow Water 6

4 5

2

0 0 1500 2500 3500 4500 5500 6500 7500 8500 1500 2500 3500 4500 5500 6500 7500 8500 3 3 Fumes flow rate [Nm /h] Fumes flow rate [Nm /h] Primary Side Primary Side

The flow rates given above have The flow rates given above have been been calculated for a temperature difference calculated for a temperature difference of 50°C of 40°C (temperature range : 50-90°C). (temperature range : 200-250°C). For any other temperature difference, the For any other temperature difference, the corresponding water flow rate is obtained using corresponding thermal oil flow rate is obtained the formula below. The corresponding pressure using the formula below. The corresponding drop is then determined following the initial pressure drop is then determined following the procedure. initial procedure. Power [kW] Power [kW] = Water flow rate [m³/h] = Oil flow rate [m³/h] 15.0732e6 x ∆T [°C] 6.4084e6 x ∆T [°C]

(1) Note: the grey zone corresponds to the pressure drop range for fumes from 300°C to 600°C. To read the pressure drop related to your design point on the fumes side, please consider that the higher the fumes temperature, the higher the pressure drop. When innovation Acts for savings...

Exchangers in parallel:

If the drop in pressure on the fumes is too great, it is always possible to put two exchangers in parallel, which will have the effect of dividing the fume flow rate by two. The thermal power recovered then represents twice the power given by the graph. The liquid flow rate to be taken into account is also twice that given by the graph.

For instance: for a flow rate of 8000 Nm³ per hour at 450°C, the graph indicates a pressure drop of 4500 Pa, which may be too high according to your specification. By putting two exchangers in parallel the fumes flow rate under consideration is then 4000 Nm³ per hour with the result that the pressure drop is 1450 Pa.

Exchangers in line:

If the drop in pressure on the fumes, calculated from the graph, is lower than the acceptable value for your system, it is then possible to recover more heat by using a second exchanger in line with the first one. The pressure drop on the fumes is then double the initial value. In this case, please contact us for an estimate of other values.

Notes:

1. The graphs shown above give the possibility of drawing up an initial technical validation from the values of your thermal energy source. Please note that you are welcome to contact us for further technical details.

2. For any sizing where hot gas is used to reheat the air or for generating steam, please contact us directly.

ACTE-SA

Rue Gilles Magnée, 92/1 4430 Ans Belgium

Tel : +32 4 247 11 24 Fax : +32 4 247 21 87 [email protected]