Teaching Laboratories

Basic Water Cooling Tower

The Basic Cooling Tower is used to introduce to the students the characteristics and construction of the mechanical draft cooling tower. This operates with moderate air and water flows with 0.5, 1.0 or 1.5 kW cooling loads.

Tray Dryer

Small scale tray dryer which drys solids by passing a stream of hot air over the trays of wet material. this is the method commonly used for drying materials in the industry. This unit is applicable to the unit operations laboratory of educational establishments and also for food technology education and research.

Continuous Distillation

The unit is a self-contained and fully instrumented distillation facility, suitable for practical laboratory work relevant to the teaching of unit operations. The equipment employs galvanically isolated intrinsically safe circuits and flameproof devices as appropriate, to enable safe distillation of standard test mixtures such as methylcyclohexane-toluene, methyl alcohol-water etc.The equipment consists of two interconnected units: a floor standing process unit and a bench-mounted control console.

Fixed and Fludized Bed

The apparatus is designed to facilitate the study of flow through fixed and fluidized beds of solid particles. There is Provision for the simultaneous study of air and water systems in the unit to demonstrate the difference between 'aggregative' and 'particulate' fluidized bed characteristics. Students can readily observe the important phenomenon of bubbling’. Upward flow of fluid through a bed of particles is a naturally occurring phenomenon, for example the movement of ground water. Industrial applications include ion-exchange, extraction of soluble components from raw materials and other chemical processes

Wetted wall columns

Wetted wall columns may be used to determine gas/liquid mass transfer coefficients, essential when calculating the design of absorption towers. Such coefficients form the basis of correlations used to develop packed towers. CES examines the absorption of oxygen from air into deoxygenated water (prepared by nitrogen sparging). This is an example of liquid film controlled absorption. The liquid film mass transfer coefficient can be determined at various mass flow rates of water.

Gas Absorption

This apparatus is used to determine the air pressure differential across the column as a function of air flow rate at different water flow rates down the column, and flooding point can be noted. The absorption process of carbon dioxide from the air-CO2 mixture into caustic soda solution, is also studied using this system.

Molecular Diffusion in Gases

This apparatus is used to determine the diffusion coefficient of a gas by evaporation from a liquid surface of the acetone - air system.

CSTR in Series

It is used to determine the degree of conversion and the rate of reaction of sodium hydroxide and ethyl acetate through 3 continuous stirred tank reactor connected in series, and to compare the performance of three CSTR in series with the one CSTR having volume equal to the sum of three.

It is also used to determine the effect of step change in input concentration on the response of a system comprising three tanks in series.

Tubular Reactor

It is used to find the reaction rate constant for the liquid phase reaction of caustic soda and ethyl acetate, and to study the effect of feed flow rate on the extent of reaction.

Chemical Reactor Apparatus

It consists of two units – one is CSTR, the other one is batch reactor. For CSTR - it is used to find the reaction rate constant for the liquid phase reaction of caustic soda and ethyl acetate, and also for determining the activation energy and pre-exponential factor using the Arrhenius equation.

Batch reactor is used to determine the order of reaction, rate constant, frequency factor and activation energy.

Level Control Demonstration Unit

It is used to study the proportional (P), proportional integral (PI) and proportional integral derivation (PID) control action on level control of a vessel.

Reverse Osmosis Set-up

It is used to determine the effect of varying feed pressure and temperature for constant feed concentration operation on permeate flow rate and permeate concentration in a reverse osmosis process.

Energy Losses in Bends

It is used to study head losses through some common type of fittings and valve.

Fluid Friction Apparatus:

It is used to study the pressure loss due to friction for fluid flow along pipes of different diameters.

Flowmeter Demonstration Apparatus:

It is used to demonstrate the application of flow meters (venture and orifice meter) in the measurement of flow rate and velocity in a pipe.

Centrifugal Pump Demonstration Unit:

It is used to obtain pump characteristic curves operating at inherent speed.

Tubular/Plate Heat Exchanger

It is used to determine the overall heat transfer coefficient, temperature efficiency for different types of  heat exchanger, and to study the effect of varying hot fluid flow rate on heat transfer coefficient.

Heat Conduction Unit

 

It is used to find the thermal conductivity of brass.

Lumped Heat Capacity Model

It is used to validate lumped capacity unsteady state heat transfer model.

Microwave Digestion System

Microwave Digestor for the digestion and preparation of the samples before their analysis.

Ultra Speed Vacuum Centrifuge

Up to 30,000 RPM for complex separation process of ultra particulates.