SUPERSONIC ELECTRONICS

Miraj, Sangli, Maharashtra

Gear Train is any combination of gear wheels by which motion is transmitted from one shaft to another shaft. In epicyclic gear trains, the axes of shafts on which the gears are mounted may move relative to a fixed axis. It is a motorized unit consisting of a SUN gear mounted on input shaft. Two plane gear meshes with the annular gear. These planet gears are mounted on a common arm to which output shaft is fitted. Loading arrangement is provided for loading the system and to measure holding torque.

RANGE OF EXPERIMENTATIONS:

1. To measure epicyclic gear ratio between input shaft and output shaft (Actual and Theoretical).
2. To measure input torque, holding torque and output torque.

TECHNICAL DETAILS:

Internal Type Epicycles Gear Train A Compact gear train (industrial) Motor Variable speed DC Motor, 1 HP. Power Supply 220 V AC, Single Phase. Speed Control Unit Thyristor controlled DC Drive for varying the speed of DC motor. Rope brake arrangement to measure output torque and holding torque. RPM Measurement Digital RPM Indicator with proximity switch.

DESCRIPTION:

Vapour Absorption Refrigerator earlier known as Electrolux refrigerator is an self contained refrigerator working on absorption technology.

In the absence of a compressor or pump, the circulation takes place by density difference. The system is pre-charged with three fluids namely water, ammonia and hydrogen. Hydrogen is used as an inert gas and does not undergo any phase change and heat transfer processes. Its purpose is to keep the pressure of the system constant.

It uses an electrically operated generator, where, the ammonia vapours dissolved in water are separated and pure ammonia vapours enter the condenser. In the condenser, the high pressure vapours reject its latent heat to the surroundings and get liquefied. The liquid ammonia expands through expansion device where its pressure and temperature is reduced and cold low pressure vapour enters the evaporator where it absorbs heat from the space to be cooled and then vaporized ammonia absorbs in water. This strong solution then enters the generator and the cycle repeats.

Technical Specifications:

DESCRIPTION:-

Refrigeration Trainer enables students to study and understand Vapour Compression Cycle, its components, principle and working. All the components are mounted on rigid steel frame. The trainer consists of a hermetically sealed compressor; natural convection air-cooled condenser, filter / drier, expansion device and evaporator. Separate pressure gauges are provided to record suction and discharge pressures and digital temperature indicators for various temperatures.

The refrigerant used is R-134 a which is environment friendly.

TECHNICAL SPECIFICATIONS :-