Air Conditioning Lab Unit | PolarX – 556
The Air Conditioning Lab Unit PolarX – 556 studies the effect of individual HVAC components on room air conditioning using an open air duct system. This Air Conditioning Lab Unit includes an air cooler, steam humidifier (500g/h, three stages), fan (810m³/h max), air preheater (2kW), and reheater (1kW), all individually switchable. Sensors monitor temperature (9 Type-k, -40~400°C), humidity (5 sensors, 0~100%), and refrigerant pressure/temperature before and after each stage. Optional LABVIEW-based DAQ software supports automated data transmission to a PC.
The Air Conditioning Lab Unit PolarX – 556 examines how each part of an air conditioning system works and what effect it has on room air conditions. This Air Conditioning Lab Unit changes the air’s flow velocity, temperature, and humidity to meet the requirements of a desired room climate.
Product Overview In many daily situations, the condition of ambient air does not meet requirements, for instance in a tropical greenhouse, the production of delicate components, or even comfortable offices. This Air Conditioning Lab Unit includes all elements utilized in building services engineering, with special consideration given to the use of original parts.
Air coolers (direct evaporators with condensing units), steam humidifiers, fans, air preheaters, and reheaters are placed in an open air duct. These elements can be turned on or off individually. The effect of each individual component on the conditioning of air is as interesting as the effect of any combination of components.
Prior to and following each stage, sensors record the air’s temperature and humidity, along with the refrigerant’s pressure and temperature. Measured values can be shown on digital displays. A DAQ system also allows immediate transmission of measured values to a PC (optional), though data gathering software is not required. Well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
Air Conditioning Lab Unit PolarX – 556, Technical Specifications
| Component | Type / Detail |
|---|---|
| System Type | Air conditioning system with open air duct |
| Components | Air cooler, steam humidifier, fan, air preheaters, reheaters |
| Air Flow Determination | Differential pressure measurement using inclined tube manometer |
| Component Control | All components individually switchable on and off |
| Sensors | Combined air humidity and temperature sensors before and after each stage |
| Refrigerant Sensor | Pressure and temperature sensor for refrigerant |
| Refrigerant | R134a, CFC-free |
Technical Data
Steam Humidifier
| Parameter | Value |
|---|---|
| Power Consumption | 2x250W |
| Steam Capacity | 500g/h, switchable in three stages |
Fan
| Parameter | Value |
|---|---|
| Power Consumption | 190W |
| Max. Volume Flow | 810m³/h |
| Speed | 500~1100rpm |
| dpmax | 420Pa |
Air Heating
| Parameter | Value |
|---|---|
| Air Preheater | 2kW, switchable in two stages |
| Air Reheater | 1kW, switchable in two stages |
Air Duct
| Parameter | Value |
|---|---|
| W x H | 300x360mm |
Direct Evaporator (Air Cooler)
| Parameter | Value |
|---|---|
| Capacity | 4.5kW |
Condensing Unit
| Parameter | Value |
|---|---|
| Power Consumption | 950W at 5/25°C |
| Refrigeration Capacity | 2kW at 5/25°C |
Cabinet (PolarX – 556)
| Parameter | Value |
|---|---|
| Function | Cabinet for measuring and maintaining HVAC condition according to ASHRAE standards for summers and winters (optional) |
Pressure Safety Switch
| Side | Value |
|---|---|
| Delivery Side | Not specified |
| Suction Side | Not specified |
Temperature Sensor
| Parameter | Value |
|---|---|
| Range | -40~400°C |
| Type | Type-k |
| Total | 9 |
Humidity Sensor
| Parameter | Value |
|---|---|
| Total | 5 |
| Range | 0~100% |
Digital Multifunctional Power Meter
| Parameter | Value |
|---|---|
| Range of AC Volt | 0~500 volts |
| Range of AC Ampere | 0~40 Ampere |
Differential Pressure (Air Flow)
| Parameter | Value |
|---|---|
| Range | 0~100Pa |
Refrigerant Pressure Gauges
| Parameter | Value |
|---|---|
| Suction Side (low pressure gauge) | -1~16bar |
| Delivery Side (high pressure gauge) | -1~25bar |
Flow Rate (Refrigerant)
| Parameter | Value |
|---|---|
| Range | 8~102L/h |
Liquid Receiver
| Parameter | Value |
|---|---|
| Maximum Working Pressure | 450psig |
| Capacity | 1.2L |
Filter Drier
| Parameter | Value |
|---|---|
| Maximum Working Pressure | 450psig |
Key Features
- Application: Air Conditioning Lab Unit for studying HVAC component effects on room air
- System Type: Open air duct configuration
- Components: Air cooler, steam humidifier, fan, air preheaters, reheaters, individually switchable
- Steam Humidifier: 2x250W, 500g/h capacity, three switchable stages
- Fan: 190W, max. 810m³/h, speed 500~1100rpm
- Air Heating: Preheater 2kW and reheater 1kW, each with two switchable stages
- Direct Evaporator: 4.5kW air cooling capacity
- Condensing Unit: 950W consumption, 2kW refrigeration capacity at 5/25°C
- Temperature Sensors: 9 x Type-k, range -40~400°C
- Humidity Sensors: 5 sensors, range 0~100%
- Refrigerant: R134a, CFC-free
Experiments
- Set-up of a refrigeration system: main components and their function
- Measurements in the refrigeration circuit: cyclic process in the log p-h diagram, determine heating and cooling capacities
- Air conditioning of room air: set-up of an air conditioning system, main components and their function, variables in air conditioning, measure temperature and air humidity, effect of the air flow, changes of state in the h-x diagram
Construction and Design
The Air Conditioning Lab Unit PolarX – 556 uses an open air duct system incorporating an air cooler, steam humidifier, fan, air preheaters, and reheaters. All components can be switched on and off individually to study their individual and combined effects. Combined sensors for air humidity and temperature are placed before and after each stage, and a sensor monitors the pressure and temperature of the refrigerant. Air flow is determined using differential pressure measurement via an inclined tube manometer. The system runs on R134a refrigerant, which is CFC-free.
Software
PolarX – 556 (optional). A DAQ software package, specially designed in National Instruments LABVIEW environment, measures and calculates the results of the apparatus. The software is optional. When the software is used, a set of electronic sensors is included. The software can be run on any Windows environment.
Scope of Delivery
- 1 experimental module
- 1 instruction manual
Q: What components make up the Air Conditioning Lab Unit PolarX – 556?
A: An air cooler (direct evaporator with condensing unit), steam humidifier, fan, air preheaters, and reheaters, all placed in an open air duct.
Q: Can individual components be tested separately?
A: Yes. All components can be switched on and off individually to study their individual and combined effects on air conditioning.
Q: How is air flow measured?
A: Air flow is determined by differential pressure measurement using an inclined tube manometer, with a range of 0~100Pa.
Q: How many temperature and humidity sensors are included?
A: 9 Type-k temperature sensors (range -40~400°C) and 5 humidity sensors (range 0~100%).
Q: Is the DAQ software required to operate the unit?
A: No. The PolarX – 556 software is optional, and data gathering software is not required for standard operation.
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