DESCRIPTION : The total set up comprises of Centrifugal fan which blows air through a square duct which consists of several sections as following.
(A) INITIAL CONDITIONING SECTION
This section comprises of a cooling coil circuit, heater section and steam humidification system. This section enables simulation of normal year round weather conditions to some extent in the confined space of the duct.
B) FIRST OBSERVATION SECTION
This section consists of flow stabilization zone and temperature measurement section. Here condition of simulated air coming out of the first conditioning section is observed and recorded.
C) SECOND CONDITIONING SECTION
This section incorporates cooling coil, heaters and humidifier tubes as in first conditioning section. The equipment incorporated in this section can be operated suitably to bring final air condition somewhere near comfort conditioning zone.
D) SECOND OBSERVATION SECTION
This section incorporates flow stabilization zone and measurement section where final condition of air is observed and recorded after conditioning the same in second conditioning section. FEATURES :- Air conditioning is simultaneous control of temperature, humidity, air motion and purity of the atmosphere in a confined space. Air conditioning Trainer facilitates study of such air conditioning process especially related to comfort conditions. Unique facility of simulation of summer and winter conditions in the duct is speciality of Air Conditioning Trainer. SPECIFICATIONS 1. Duct Size : 250 mm x 250mm x 2m. long (approx.)
2. Blower Fan : Driven by 0.5 H.P. (Approx.) 3 phase motor. Air flow 0.28 m/Sec. With butterfly valve inlet to control air flow rate.
3. Digital Temperature Indicator :
0-2000 C with 10 C least count, multi channel.
4. Steam Generator : compact unit provided with 1.5 Kw. Heater for generating steam.
Connected to both sections by insulated piping through hand control valves.
5. First and Second conditioning sections comprises of following :
a) Electrical Heater : finned U Tube air heaters 0.5 Kw. Capacity.
b) Dimmerstat : 230 V.A.C. Single phase, 5-10 Amp. Capacity. Common for both sections with selector swithch.
c) Energy Meter : 230 V.A.C. Single phase 5-10 Amp. Capacity.
d) High pressure Gauge for R-12 Refrigerant.
e) Low Pressure Gauge for R-12 Refirigerant.
f) Refrigerant flow meter for R-12 Refrigerant.
g) Cooling Unit : Comprising of sealed compressor, air cooled condenser, expansion valve and cooling coil in duct.
Capacity : i) 1st section 2/3 Ton
ii) 2nd section 1/3 Ton
h) HP-LP Cut out of suitable range.
7. Control panel consisting of proper switches and valves.
8. Sturdy fabricated frame for housing the duct, instrumentation and controls.
9. Dry and wet bulb thermometers 2 sets. RANGE OF EXPERIMENTS 1. To find out C.O.P. of refrigeration circuit used for air conditioning applications.
2. Flexibility provided in creating wide range of entry conditions apart from ambient enables
3. students to study the year-round air conditioning process easily.
4. A range of experiments can be carried out at various air flow rates SERVICE REQUIRED 1. R-12 Refrigerant : Approx. 7 kg.
2. Electric Supply : 15 Amps. 230V. and 32 Amps 440 V.A.C. continuous supply.
3. Space 5m x 3m. |
