EU Air Handling Units with SEMCO EXCLU-SIEVE®
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EU Air Handling Units with SEMCO EXCLU-SIEVE®

The acquisition of US based Semco has given us the opportunity to include a new range of rotary heat exchangers in our EU air handling unit range. Hygienic Hygroscopic wheel with molecular desiccant coating, which avoids contaminant carryover. Only water moisture is transferred. The EXCLUSIEVE wheel utilizes a 3Å molecular sieve desiccant coating to limit the risk of desiccant cross contamination, which would otherwise cause a portion of the exhaust air pollutants to be transferred, along with the water vapour, to the fresh air stream. Compact Rapid absorption of moisture gives a high...

Non-wearing Extruded Labyrinth Seals EXCLU-SIEVE utilizes a four-pass labyrinth seal, which has been designed to give optimum performance under the pressure conditions encountered in this application. Since the seals never actually touch the rotating surface, their life is indefinite. All seals are easily field adjustable. This efficient sealing system increases performance and virtually eliminates carryover of contaminants from the return air stream to the supply air Stream. Modular Media Sections with Aluminium Spoke Support System The media support system is made from aluminium...

SEMCO EXCLU-SIEVE enthalpy exchanger recovers both sensible (temperature) and latent (moisture) energy, and does so far more effectively than other competitive offerings. This performance edge is a result of EXCLU-SIEVE’s unique transfer core. This “honeycomb like” media utilizes an aluminium substrate coated with a fast acting, 3Å molecular sieve desiccant. As the transfer core slowly rotates between the outdoor and return air stream, the higher temperature air stream gives up its sensible energy to the aluminium. This energy is then transferred to the cooler air stream during the second...

Tubular Steel Casing Construction To avoid deflection of the energy wheel casing due to the significant torque imposed by the air pressure on the energy wheel surface, a tubular steel framework is used. Casing deflection is undesired since it increases the gap between the seals and the wheel surface causing excessive air leakage. Built-in Bearing Replacement System The bearings used in the EXCLU-SIEVE units provide a long life with minimal maintenance. The external pillow block bearings simplify any replacements should this ever become necessary. The rotor remains in the casing and none of...

Selection procedure 1. Find a wheel size from the chart below 4. Find the efficiency of the wheel from the chart below. Qmin/ Qmax 3. Calculate the ratio of the of the air flow rates: Qmin Qmax 5. Find the pressure drop for each side in the chart below Pressure drop 2. Calculate the air velocity for each of the airstreams (supply and extract) using the area given in the table below.

Selection procedure Calculate the conditions after the wheel: For the supply air Qmin X2 = X1 - es Where X is temperature, moisture content or enthalpy

Purge volume As energy recovery wheel rotates from the exhaust air stream into the supply air stream, a small amount of the exhaust air is traversing the flutes of the wheel media as it passes by the seal separating the two air streams. If this volume of exhaust air were allowed to mix with the clean supply air stream, “cross-contamination” would occur. Cross-contamination is virtually eliminated by a “purge section”, which is an integral part of the casing design. The purge section utilizes the pressure difference which exists between the outdoor and return air streams to “purge” the...

The EXCLU-SIEVE product was specifically developed for applications involving contaminated air streams. Its field adjustable purge section and four pass non-wearing labyrinth sealing system limits “air stream cross-contamination” to less than .04 percent of the exhaust air concentration by volume. “Selective adsorption,” the ability to transfer water vapour to and from the exhausted air stream while allowing other gaseous contaminants to pass unadsorbed, is a necessity for most all energy recovery applications. Re-circulating some portion of these contaminants back to the space is...

Ordering Semco TE3 Rotary Heat exchanger EURU-aa-bb-c-4-1-f-1-1-1-j-k Supply air unit size (aa) 22,32,33,42,44,53,64,73,82,84 Semco rotor TE size (b) 5,9,13,24,35,43,46,56 Purge index setting (c) 1 - 9 (From Acon) Arrangement (d) 4 = Arangement D, supply air under Motor type (e) 1 = 230V, 1 phase, 50 Hz, variable speed with inverter Temperature controller (f) 1 = 24V with 4 point Sensors 3 = 24V with Averaging Sensors Rotation detector (g) 1 = 24V, singe phase Wheel treatment (h) 1 = Anti stick coating Casing materials (i) 1 = galvanized steel sheet Design variant (j) Inspection side (k) 1...

FWG - EU with SEMCO EXCLU-SIEVE® GB 2011.08-9110 © Copyright 2011 Fläkt Woods Group Fläkt Woods is a global leader in air management. We specialise in the design and manufacture of a wide range of air climate and air movement solutions. And our collective experience is unrivalled. Our constant aim is to provide systems that precisely deliver required function and performance, as well as maximise energy efciency. Solutions for all your air climate and air movement needs Fläkt Woods is providing solutions for ventilation and air climate for buildings as well as fan solutions for Industry and...