Thermo-Fluids Laboratory

Name of Lab: Thermo-Fluids Laboratory

Location: Room 240

Co-incharge(s):

Dr. H. Tyagi Dr. Ramjee R.

(Ph: 01881-242119) (Ph: 01881-242159)

Details of equipments:

Centrifugal Pump System

Description:

Centrifugal pump test rig is employed for testing the performance of the pump under various operating conditions. Effect of parameters such as flow rate, impeller speed, impeller type (radial, forward, backward) on the performance of the centrifugal pump can be investigated. Typically, system and performance curves for the centrifugal pump can be plotted.

Gas Turbine Test Rig

Description

The Minilab gas turbine is a self contained jet engine (Model SR-30). The SR-30 is a small sized turbojet engine. It works on Brayton cycle with air as a working fluid. It is made up of inlet and exhaust nozzle, radial compressor, counter-flow combustion chamber and turbine. The whole system is integrated with thermocouples and pressure gauges for various thermodynamic evaluations.

Heat Transfer in Nautral Convection

Description:

The heat transfer due to natural convection apparatus consist of vertical cylinder with heater and various temperature sensors. The raise in temperature along the length of the plate causes a differential changes in density along the height (as known as density gradient). As a result, the buoyancy effect is observed.

Heat Transfer in Forced Convection

Description:

The forced convection apparatus is made up of heaters, temperature sensors and blower. The discharge of the blower can be controlled by a discharge valve. The heater is located at the centre of the test section and heat input is constant along the heating section. The forced air flowing through the pipe causes the heat transfer due to convection process. Subsequently, there is a significant rise in temperature of the downstream air compared to that of upstream air from the blower. This temperature differences can be determined using the thermocouples placed along the test section.

Critical Heat Flux Apparatus

Description:

This apparatus essentially predicts the critical heat flux value for different values of bulk temperature. The test rig consists of two heaters (bulk heater and the test heater) and a dimmer stat to control the power input. The bulk heater is employed for initially heating the water surrounding the test heater (a thin nichrome wire 1 cm in length and 0.2 mm in diameter tied between two points) to predefined value. After the bulk temperature reaches the predefined value the bulk heater is switched off and the test heater is switched on.

Linear Parabolic Trough Solar Collector

Description

Linear parabolic trough solar collector test rig is employed for assessing various kinds of fluids for their capability in harnessing solar radiant energy through direct volumetric absorption. It consists of a parabolic reflector, two concentric glass tubes along the focal axis, and an array of halogen lamps (to simulate solar radiant energy). The inner glass tube (enveloped by concentric glass tube) houses the fluid which is to be investigated for its volumetric absorption capacity. The fluid captures the radiant energy as it circulates through this glass tube and temperatures are measured using K-type thermocouples.

And many more . .