The regenerative cooling system. Ka 2 O. Co-funded by the Eco-innovation Initiative of the European Union

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1 The regenerative cooling system Ka 2 O Co-funded by the Eco-innovation Initiative of the European Union

2 Ka 2 O-technology: Indirect evaporation cooling for air handling units. adiabatic efficiency: 96 % adiabatic cooling: bis zu 18 K heat recovery class: H1 implemented reference with Ka O complies with the 2 Oekodesign Directive 2016 & 2018 (ErP)

3 Maximum cooling output Using Ka 2 O, the supply air is cooled to 0.5 K above the wet bulb temperature of the exhaust air. Regardless of the outside temperature, even at as high as 40 C. 1 I 6

4 Heat recovery The counter-current principle achieves up to 87 % temperature change, up to 78 % dry in compliance with EN I 6

5 Modular technology ,000 m³/h Extremely variable by combining up to 12 modules above each other and 5 module towers behind each other. 3 I 6

6 Minimal pressure loss In spite of its counter-current principle, consistently low pressure loss of 170 Pa due to parallel flow through the modules, even at air volumes of up to 24,000 m³/h. 4 I 6

7 KaControl Ka 2 O technology is factory-fitted with a KaControl and thus has innate intelligence. Integration into building management systems via BACnet, Modbus or LON. 5 I 6

8 NOVA air handling units Kampmann and NOVA, founding members of the Air Handling Manufacturers Association e.v., have been cooperating since Ka 2 O technology is incorporated in NOVA units and and jointly delivered. 6 I 6

9 Ka 2 O-technology at a glance Housing cover Water drain Air baffle Water supply Nozzle unit (removable) Counterflow heat exchanger Aluminium housing with integral 3D gradient 1 I 1

10 Innovative maintenance by removable air guide Guide rails for ease of assembly Air baffles in supply air/fresh air paths Complete separation of polluted exhaust and extract air Water system Ka 2 O modules* Sealed on all sides by conical joint Side view with air guidance, fitted operating mode Side view with air guidance, taken off maintenance case * Ka 2 O modules easily accessible in the air handling unit by removable side air baffle. 1 I 4

11 Counterflow heat exchanger } coated aluminium fins } nozzle unit with five full cone nozzles for optimum water distribution in the exhaust air } lance including nozzles supplied as plug-in system: easily removable for maintenance } heat recovery complies with the requirements of the ErP Directive } patent applied for 2 I 4 2 I 4

12 Air baffles } for even directional flow to the modules on the supply and exhaust air sides } simple to remove at the side } complete separation of exhaust air and extract air Water system } immersion pump for wetting up to twelve modules above each other } 3D gradient and drain unit for automatic emptying of the system } solenoid valves for distribution over up to 5 towers 3 I 4

13 Ka 2 O modular technology vs. counter-flow units counter-flow unit Ka 2 O-system Percentage of cross-flow Percentage of counter-flow 80 % 40 % 20 % 60 % 12 modules on top of each other, 5 towers combined behind each other counter-current principle up to 24,000m³/h no pressure rise caused by supply ducts 4 I 4

14 KaControl Applications KaControl factory-fitted humidification intensity regulated according to air volume timed automatic drainage or by measuring conductance automatic controlled drainage in the event of power failure or malfunction integration into ventilation control strategy by means of analogue and digital inputs qand outputs Ka 2 O technology provides a complete energy-saving alternative to conventional systems that use refrigerant. Possible applications include premises that require ventilation and where significant cooling of outside air is required in summer at minimal operating costs. interface for BACnet, Modbus or LON from optional plug-in module 1 I 1

15 Ka 2 O cooling process compared Cooling recovery upstream of mechanical cooling Cooling with honeycomb humidifier 1 I 4

16 Ka 2 O cooling process compared Cooling with Ka 2 O Design specifications Fresh air: 32 C 40 % r.h. Extract air: 26 C 55 % r.h. Supply air: 20,1 C, 80,7 % r.h. Heat recovery efficiency (EN 308): 75 % 2 1 Other temperature example Fresh air: 40 C, 30 % r.h. 13,9 g/kg Supply air: 21,5 C, 86 % r.h. 13,9 g/kg Extract air: 26 C, 65 % r.h. 13,7 g/kg Wet bulb temperature: 21,0 C Exhaust air: 30 C, 72,9 % r.h. 19,6 g/kg 1 Process 1: Exhaust air cooled to wet bulb temperature 2 Process 2: Up to 100 % of the wet bulb temperature is transferred to the supply air = maximum possible cooling by evaporation cooling ZU = Supply air AU = Fresh air AB = Exhaust air FO = Extract air (air pressure measured: hpa) 2 I 4

17 Ka 2 O modular principle of air volumes 35 possible module combinations No. of vertical modules 1 tower 2 towers 3 towers 4 towers 5 towers [m³/h] [m³/h] [m³/h] [m³/h] [m³/h] I 4

18 Exemplary assembly AHU with 12 Ka2O modules, arranged on top of each other Air volume for 5 towers in parallel up to m 3 /h Timed automatic drainage or by measuring conductance Example of dimensions: height mm, length mm Air guidance acc. to VDI 6022 Side view 4 I 4

19 Our field sales team is always local to you! Take advantage of these service benefits: on-site consultation Benefits for you! design support for all projects system solutions detailed discussions After Sales Service Find your contact person here: Kampmann.co.uk/contact 1 I 2

20 Best solutions. Best support. Kampmann.co.uk Kampmann GmbH Friedrich-Ebert-Str Lingen (Ems) Germany Kampmann UK Ltd. Dial House, Govett Avenue Shepperton, Middlesex, TW17 8AG Great Britain T F E export@kampmann.de W Kampmann.de T F E info@kampmann.co.uk W Kampmann.co.uk 2 I 2