AIR CONDITIONING LABORATORY UNIT - Solution Engineering

SOLTEQ ® Equipment for Engineering Education & Research
T
AIR CONDITIONING LABORATORY
UNIT
MODEL: AC 01
HE Air Conditioning Laboratory Unit (Model: AC 01) has been designed to demonstrate to students
the working principle of air conditioning where air temperarture and humidity may be changed. The unit is
suitable for those studying in Building Services, Chemical Engineering, Marine Engineering, Mining
Engineering, Plant Engineering, etc. With the aid of a optional data acquisition system, students shall be able to
collect relevant data automatically and subsequently perform all the necessary calculations.
EXPERIMENTAL CAPABILITIES
♦ To study the process of humidification, pre-heating,
cooling and de-humidification, and re-heating.
♦ To obtain experimental data for air and refrigerant
so that the state points may be plotted on a
psychrometric chart for air or a pressure enthalpy
chart for refrigerant.
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SOLTEQ ®
♦ To determine the thermodynamic properties (e.g.
specific enthalpy, specific volume, specific humidity,
etc.)
♦ To compare the enthalpy change of the air during the
above processes with the heat transfer at the boiler,
the heat transfer at the pre-heater, the enthalpy
change of the refrigerant, and the heat transfer at
the re-heater.
♦ To compare the change of the specific humidity of
the air during cooling with the condensate formed.
DESCRIPTION
This self-contained unit consists of several components
joined by ducting through which the air flows. These
components, commonly found in an industrial or
commercial air conditioning unit, include a fan, a heater,
a cooler, a humidifier, a de-humidifier (may be in
conjunction with cooler) and a filter. The ducting and the
components are supported on a steel frame with lockable
castors.
The unit comes with a pressure boiler (for humidification)
and refrigeration plant (for cooling and de-humidification)
which are housed in the lower part of the frame.
The ducting through which the air flows has a crosssectional
area of about 0.9 m 2 . Air from the atmosphere
enters a variable speed centrifugal fan before going into
the ducting. While the air is entering the fan, steam can
be injected to increase the moisture contents so that a
homogenous mixture of air and steam flows into the duct.
Upon leaving the fan the air passes over two 1 kW
externally finned electric elements (pre-heating) which
may be individually switched. The warmed air then enters
a stabilising section where its condition is determined by
humidity or temperature sensor. Next the air flows through
the evaporator of the refrigeration unit where it may be
cooled and will deposit some of its moisture content as
liquid. The cool and drier air passes into another
stabilising section with humidity or temperature sensor
Equipment for Engineering Education & Research
before passing over two individually switched 0.5
kW re-heating elements. The condition of the reheated
air is determined and it then passes back to
the atmosphere through an air flowmeter.
SOLTEQ
The boiler which supplies the steam for
humidification is controlled by a steam generation
controller so that the rate of steam production rate
may be varied. An electronic level switch is installed
in the boiler so that, in conjuction with a solenoid
valve, the water level can be maintained.
The refrigeration circuit is charged with refrigerant
R134a. During the proces vapour formed in the
evaporator is drawn into a hermetic compressor
which discharges into an air cooled condenser. The
R134a liquid then passes through a flowmeter and
thermostatically controlled expansion valve to the
evaporator. Temperature and pressure measuring
points are provided in the refrigeration circuit.
The fan speed may be varied by a thyristor mounted
on the control panel switches and indicators are
mounted on the control panel.
SPECIFICATIONS
Air Throughput: 0.14 m 3 s -1 (max.)
Fan: Centrifugal (variable speed)
Pre-heater: Two extended fin electric heating
elements, each 1.0 kW, individually switched
Cooler: Direct expansion, finned coil. Cooling rate
approximately 2.0 kW but varies with conditions
Re-heater: Two extended fin electric heating
elements, each 0.5 kW, individually switched
Boiler: Electrically heated, Fitted with level switch
and solenoid valve to maintain level. Variable steam
generation controller
Refrigerator: Hermetic compressor with air cooled
condenser. Refrigerant R134a.
Duct cross section: 30.0 cm x 30.0 cm
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SOLTEQ ® Equipment for Engineering Education & Research
SAFETY
Refrigerator : High pressure and low pressure cut-out
.
Boiler : All heaters protected by temperature
controller. Water level is maintained by
means of level switch and solenoid
valve.
OPTIONAL ITEMS
-EI
DIGITAL INSTRUMENTATIONS
i) 4 units of Digital Indicators
ii) 6 units of temperature sensor c/w transmitter
iii) 1 unit of refrigerant flowmeter
iv) 1 unit of air flowmeter
v) 5 units of temperature/humidity sensor c/w
transmitter
vi) 2 units of pressure transmitter
-DAS
SOLDAS DATA ACQUISITION SYSTEM
i) A PC with latest Pentium Processor
ii) An electronic signal conditioning system
iii) Stand alone data acquisition modules
iv) Windows based software
♦ Data Logging
♦ Signal Analysis
♦ Process Control
♦ Real-Time Display
♦ Tabulated Results
♦ Graph of Experiment Results
SOLTEQ
- CAL
SOLCAL COMPUTER AIDED LEARNING
SOFTWARE
i) Interactive multimedia features
ii) Graphical simulation
iii) Experiment results samples
iv) Full experiment manuals
REQUIREMENT
Electrical : 10 kW 380-415 VAC/3-Phase/50Hz
Water : 10 litre per hour at 10 m head minimum.
OVERALL DIMENSIONS
Height : 1.130 m
Width : 2.230 m
Depth : 0.500 m
MANUAL
The unit is supplied with Operating and Experiment
Manuals in English giving full descriptions of the unit,
summary of theory, experimental procedures and
typical experimental results.
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SOLTEQ ®
SOFTWARE & E - LEARNING
Our range of teaching equipment can be complemented with our
SOLDAS and SOLCAL software.
SOLDAS TM - Supervisory Control & Data Acquisition
- Data Logging
- Signal Analysis
- Process Control
- Real-Time Display
- Tabulated Results
- Graph of Experimental Results
SOLCAL TM - Computer Aided Learning
- Multimedia Features
- Interactive
- Graphic Simulation
- Experiment Result Samples
- Full Experiment Manuals
Contact us for a catalog CD
SOLUTION ENGINEERING SDN. BHD.
(Co. No. 174876-M)
Sales Office :
No.3, Jalan TPK 2/4, Taman Perindustrian Kinrara,
47100 Puchong, Selangor Darul Ehsan, Malaysia.
Tel. No. : +(603) 80758000
Fax.No.: +(603) 80755784
R&D Office :
G-2A, Incubator 3, Technology Park Malaysia,
Bukit Jalil, 57000 Kuala Lumpur, Malaysia.
Tel. No. : +(603) 8996 0023
Email : solution@solution.com.my
Web site : http//www.solution.com.my/
Equipment for Engineering Education & Research
AGENT:
BUATAN MALAYSIA
MSC- Status
Company
Rev1.0 17/06/2011