A660 Air Conditioning Laboratory Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment
Description A complete, upgradeable, instrumented air conditioning laboratory unitmounted on a steel frame and castor wheels. Upgrades may be addedat any stage in the unit’s long life to spread the investment costs. Thebase unit comprises a variable speed radial acting axial flow fandischarging into a 250mm square duct with steam humidifier, electricalpre-heaters, direct expansion cooling coil/de-humidifier, electrical reheaters and orifice plate for airflow measurement. Air-cooling isprovided by vapour compression refrigeration system with pressure,temperature and refrigerant flow measurement. This allows theconstruction of a full cycle diagram and the balancing of refrigerantsystem energy balance against the airside energy transfer. Air conditionis recorded before and after each process using precision wet and drybulb sensors. Instrumentation allows the electrical power to eachresistive load to be measured and balanced against the air enthalpychange and mass flow. Features Digital Temperature display supplied as standard High accuracy wet and dry bulb sensors before and after eachprocess to determine air condition. All processes fully instrumented to allow energy and mass balancesacross each process of heating cooling and humidity change. Reaches stability rapidly after a change of operating conditions. May be upgraded at any time to reduce capital outlay. Upgrade options available include: 1. Re-circulation (A660B), 2. Computer linking (with software) (AC660A), 3. PID control and Environmental Chamber (A660C + A660D). Technical Specification Psychrometric condition measured before and after each process byhigh precision wet and dry bulb sensors with 0 to 100% RHmeasurement capability. Airflow is adjustable to at least 0.14m3/s. Switchable heating up to 4kW. Switchable steam injection up to 5kW electrical equivalent. Cooling is by a fully instrumented vapour compression cycle withnominally 2kW capacity. Weights & Dimensions Weight: 165 kg Length: 2370mm Width: 530mm Height: 1260mm Length: 3630mm with addition of A660B Weight: 224 kg with addition of A660B
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