Psychrometer

This charging unit is fitted with motorised vacuum pump and other safety devices like pressure gauge. With the help of this charging unit students can charge the refrigerant gases into compressor or store the gas of a refrigerator or air conditioner inside the cylinder fitted inside the charging unit that can be used later.

The unit enables students to study the various parameters affecting the performance of a domestic refrigerator. It consists of refrigeration cycle of domestic refrigerator, it consists a hermetically sealed compressor, air-cooled condenser, capillary tube and a natural convection type evaporator. The evaporator is fitted with a small heater to simulate different load conditions various measurements are provided so that power consumption, COP, theoretical and actual refrigerating effects refrigerant flow rate and effect of door opening on power consumption can be studied and also students can visualize automatic operation of unit using a thermostat.

SPECIFICATIONS:

1.Compressor – Hermetically sealed, Kirioskar make having capacity of approx. 1/25 ton of refrigeration. 2.Air – cooled condenser with natural convection airflow. 3.Capillary tube of matched length as expansion device. 4.Evaporator coil with an electric heater inside and adequate glass wool insulation on all side. 5.Measurement a)Energymeter Tore compressor input power measurement. b)Pressure gauge for condensing and evaporating pressure. c)Flow meter for liquid refrigerant flow d)Digital Temperature indicator for measurement of temperature 6.safety & Controls a)High & low pressure cutout. b)Thermostat. c)Necessary Switches. A technical manual accompanies the unit. Also, the unit is provided with an attractive and rust proof powder coating.

SERVICES REQUIRED:

1.Floor space of 2m x 1m. 2.230V AC stabilized supply with earthing connection

Window air conditioner is becoming now a day’s necessity. The unit demonstrates the application of window air conditioner & evaluation of its performance. It consists of a small room to which a small air conditioner is connected the room is provided with a transparent front cover with a heater inside to simulate heat load in the room. Various measurements are provided so that performance of system that is COP of system, actual & theoretical cooling capacity of system & power consumption of unit with different load conditions.

SPECIFICATIONS:

1.Compressor – Hermetically sealed, Kirloskar make, having the capacity of 1/10 ton of refrigeration using R-12 refrigerant to keep room temperature between 20 to 30 c. 2.Condenser – Finned tube type, with forced air flow over the tubes, 3.Capillary tube of matched length as expansion device. 4.Evaporator – Finned tube type with forced air flow, 5.Room – 0.6 X 0.7 X 0.7 m. height, provided with transparent front wall. A heater with input control is provided inside the room. Which simulates different load conditions. 6.Measurements and Controls a) H.P. / L.P. Pressure gauges b) Digital temperature indicator to measure the temperatures at various points. c) Energy meters to measure input to compressor & heater. d) High and low pressure cutout. e) Thermostat to put off the compressor at set room temperature. f) Necessary switch for electrical components.

SERVICES REQUIRED:

1.Floor area of 2m X 1 m. 2.230V, 15AC stabilized supply with earthing connection

Refrigeration & Air Conditioning Tool Kit (Set Of 20) This tool kit is a set of twenty tools used in refrigeration & air conditioning. With the help of this tool kit students can learn how to operate these tools & also understand there applications.