Summer Air-Conditioning System — MOE Lab Tender Details

Summer Air-Conditioning System for Thermodynamics Lab Equipments

Objectives of the experiment:
 
1. To measure the cooling capacity of the system
2. To calculate Coefficient of Performance (COP)  
3. Plotting psychometric chart from the measured dry and wet bulb temperatures and barometric pressure
4. To estimate dehumidification rate
5. To estimate cooling coil by-pass factor
6. To study the effect of pre-heating and re-heating
 
Technical Specification:  
 
a) REFRIGERANT : R-22/R-410a  
b) HERMETICALLY SEALED COMPRESSOR   
Capacity : 1.0 TR  
(at 7oC evaporator, 54oC condenser temperature,  35oC ambient air temperature)
 Type : Reciprocating / Rotary  
c) AIR COOLED CONDENSER   
Type : Forced convection air cooled Multi row fin and tube type  
d) CONDENSER COOLING FAN
Type : Forced Draft  
e) EVAPORATOR  : Forced convection multi-row fin and tube type  
Fan for Evaporator : Forced draft with variable flow
f) AIR-CONDITIONING DUCT   
Material  : FRP
Electrical Pre-heater with variac : 1No. with 1 kW  
Electrical Re-heater with variac : 1No. with 1 kW   
EXPANSION VALVE  
THERMOSTATIC EXPANSION VALVE AND CAPILLARY TUBE ARE IN PARALLEL
a) THERMOSTATIC EXPANSION VALVE :  1 NO. Make : Danfoss / Sporlan  
Variation in flow rate : by adjusting the TEV screw   
Type : Internal equalizer type      
Solenoid valve
b) CAPILLARY TUBE :  1 NO.
REFRIGERANT FLOW MEASUREMNT  :  1 No
Type : Rotameter
Range : 10 to 100 g/s
Accuracy : 1 g/s
HAND SHUT OFF VALVES : Before and after each component   
FILTER DRIER : 1 NO.  
PRESSURE GAUGES    : 1 NO.  
Range :  0 to 300 psi  
Type : Bourdon   
COMPOUND GAUGES    :  1 NO
Range : -30 “ Hg to +150 psi
Type : Bourdon  
HP/LP CUTOUT  :  1 NO.
Range : 0 to 300 psi  
Make and model    : Danfoss / Sporlan  
DIGITAL DUAL WATT METER FOR COMPREESOR AND HEATERS  
Range      : 0 to 20 amps  
Range      :  5000 watts 1ph
Watt resolution    :  1 watt  
Type      :  2 RMS  
Isolation     :  Electrically isolated   
No. of displays    :  one, 4 digit
Computer connectivity   :  through RS485 port on back panel.
Power     :  230V±20% ac, 50Hz.
Operating temperature   :  0-50°C
 
DIGITAL TEMPERATURE INDICATOR  : 1 set  
Temperature range   :  -30  to 199.9 deg.c. Resolution    :  0.1 deg.c Type of sensor    :  k-type thermocouple. No of channels     : 8 channels (2 channel for WBT) No. of displays    :  one, 4 digit
Power     :  230V±20% ac, 50Hz.
Operating temperature   :  0-50°C
 
ELECTRONIC DIMMER    : 2 NO
Range       : 230 vac
Type       : variable  
 
AIR FLOW MEASUREENT
Type      :  Orifice plate with inclined tube manometer