GEA CAIRplus - CS Klimateknik

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Technical DescriptionGEA CAIRplus3 Technical Description3.1 Scope of performanceOne of the main purposes of GEA CAIR units is to facilitate energy-efficient in/outventilation of rooms. Due to their modular construction, the units may be configuredseparately to cater for special air-handling requirements. The air conveyedmay be filtered, heated, cooled, humidified or dehumidified, depending on theparticular application. The aim is to ensure that the quantity and condition of thetreated air meets the customer's requirements.GEA CAIR units are generally used in the leisure and commercial/industrialsectors for the transportation and treatment of “normal” air. These units may alsobe specially adapted for cleanroom and hygiene applications. GEA CAIR unitsthat include special explosion protection precautions and comply with ATEXGuideline 94/9/EC are clearly identified as such. These units are supplied with anadditional operation manual that must be read and applied in practice.To save energy, a range of components are available such as rotary heatexchangers, plate heat exchangers, heat pipes and liquid-coupled heatexchangers for the recovery of heat, and also the partial recovery of moisture.Units of different sizes and capacities are available. Depending on the application,GEA CAIR units can provide a vertical or horizontal airflow with double deck,side by side and straight through arrangements. Units are available for installationindoors or outdoors.The modular design of the GEA CAIR units makes it possible to split up units intosuitable delivery packages that will pass through the available on-site openingsduring installation. GEA CAIR units are also suitable for the modernisation ofexisting buildings due to the range of unit sizes available and the option of orderingthe units in small delivery packages.3.2 Unit design and operating principleA variety of configurations is possible due to the modular design of the units andthe various applications.The basic design of the unit and its operating principle is illustrated below usingexamples.F.A. = fresh airS.A. = supply airR.A. = return airE.A. = extract air12 PR-2009-0096-GB • Subject to modifications • Status 07/2010
GEA CAIRplusTechnical DescriptionFig. 3-1 shows a GEA CAIR unit that is used exclusively for conveying air. Theunit consists of a casing incorporating a base frame, fan unit, damper on the freshair side, two flexible connectors and a service switch.Service switchS.A.F.A.Fig. 3-1:Unit for handling airSupply and exhaust air units can be combined and used to add return air to supplyair (completely, partially and/or intermittently). This is mainly employed to saveheating or cooling energy.Fig. 3-2 depicts a combined exhaust air unit and supply air unit with additionalfilter and heater section. The units are connected via mixing boxes.S.A.Service switchF.A.E.A.R.A.Fig. 3-2:Combined supply and exhaust air unit with mixing boxIn contrast to the straight through arrangement shown in Fig. 3-2,Fig. 3-3 shows a double deck combined supply and exhaust air unit with heatrecovery facility. In addition to the conveying, filtering, heating and mixing of air,this unit is also capable of recovering energy via a plate heat exchanger.R.A.F.A.S.A.E.A.Fig. 3-3:Combined supply and exhaust air unit with heat recoveryPR-2009-0096-GB • Subject to modifications • Status 07/2010 13
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GEA CAIRplus - CS Klimateknik

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