Air Conditioning & Ventilation System Model RAC 077


Sci-tech Air Conditioning & Ventilation System Model RAC 077 set-up represents a real air conditioning and ventilation system. The system capacity is sufficient to climatise a laboratory room. The air conditioning and ventilation system includes a filter element, a fan with controlled speed, a direct evaporator as air cooler, an electric air heater and humidification by steam humidifier. The following functions are possible: heating / cooling and humdifiying / dehumidifying.


* Complete air conditioning and ventilation system for laboratory operation

* High practical relevance due to real dimensions and use of commercial components

* Manual or automatic operation by PLC air conditioning controller

* Connection of an external air duct system possible

Item Description

For this purpose the active components can be run either manually individually or via a central PLC air conditioning controller in automatic operation. The air conditioning controller controls the temperature and air humidity independent of each other. Via time programs, operation is possible dependent on the time of the day or the day of the week, as in reality. Pressure losses can be measured at each section of the duct. All common components, such as filter, air heater / air cooler, outlets, smoke detector, multi-leaf dampers, inspection and fire protection flaps are available and can be explained. A standard connection piece in the air duct enables the connection to an external air duct system to climatise an existing room. The air conditioning and ventilation system consists of three independent system components: main unit, steam humidifier and condensing unit. The connection is performed via hoses. Due to the waste heat the condensing unit should not be placed inside the room to be climatised. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Technical Specifications

[1] practice-oriented air conditioning and ventilation system with 3 independent system components: main unit, condensing unit, steam generator

[2] manual or automatic operation via PLC air conditioning controller

[3] main unit with air duct, fan, air conditioning system

[4] air conditioning system with direct evaporator as air cooler, electric air heater, humidification

[5] hoses connect direct evaporator to condensing unit, humidification to steam humidifier

[6] air duct from hot galvanized sheet with sight window and pressure measurement connections to record pressure curves

[7] air duct with filter, multi-leaf damper, ceiling vent, protective grating, ventilation grille, fire protection flap, inspection flap, sound insulation link, smoke detector

[8] standard connection piece to connect to external ventilation system

[9] refrigerant R404a, CFC-free

Technical Specifications

Fan, speed-controlled 0…1500min-1

– max. volumetric air flow rate: 2500m³/h

– max. pressure level: 715Pa

– drive motor power: 1,1kW

Air heater, 4 stages: 0-5-10-15-20kW

Air cooler (direct evaporator), cooling capacity: 27kW

Condensing unit

– rated cooling capacity: approx. 16,6kW at 7.2/32°C

– power consumption: approx. 7,4kW at 7.2/32°C Steam humidifier

– steam capacity: 10kg/h

– power consumption: 7,5kW External standard connection piece: 400x400mm Duct cross-sections

– bottom: WxH: 630x630mm, top: WxH: 358x358mm Inclined tube manometer: 0…750Pa