ELECTRICAL LAB

SOLAR WATER HEATING SYSTEM.

Solar water heating (SWH) is the conversion of sunlight into heat for water heating using a solar thermal collector   A sun-facing collector

heats a working fluid that passes into a storage system for later use. SWH are active (pumped) and passive (convection-driven).

PNEUMATIC CIRCUIT FOR SPEED CONTROL OF DOUBLE ACTING CYLINDERS.

Pneumatic Circuit for Speed Control of Double Acting Cylinders. Pneumatic cylinders can be directly controlled by actuation of final directional control valve as shown in fig. These valves can be controlled manually or electrically. This circuit can be used for small cylinders as well as cylinders which operates at low speeds where the flow rate requirements are less. When the directional control valve is actuated by push button, the valve switches over to the open position, communicating working source to  the cylinder volume. This results in the forward  motion of the piston. When the push button is  released, the reset spring  of the valve restores the valve to the initial position [closed]. The cylinder space is connected to exhaust port there by piston retracts either due to

POWER TRANSMITTED BY ANY BELT DRIVE USING ANY ONE DYNAMOMETER.

TECHNICAL DETAILS

 Motor : Variable speed motor, 1HP, 1500 RPM.

 Pulleys : Driving and driven pulleys of equal diameters (flat pulleys)  Loading Arrangement : Brake drum along with spring balance and rope arrangement is provided to load the system.

 Belts : Flat belts of fixed length of two different belt materials

 Belt tightening arrangement : Bearing block is sliding and dead weight can be applied to set the initial tension in belt.

Speed Indicator : 2 Channel digital speed indicator with switch to change the channel.

 The data acquisition system can be done by interfacing the set-up with computer using software.