HEAT EXCHANGER TRAINER (HT-01)
S P Tech Equipments has designed the Heat Exchanger Trainer to facilitate students to study and comparison of different types of Heat Exchangers on the same setup. The Basic setup consists of a tank fitted with electric immersion heaters for supplying hot water to the heat exchangers. The supply temperature of this hot water is selected and controlled by a manually operated thermostat or a temperature controller (optional). Motor driven pumps is provided to circulate hot and cold water through flowmeters through the quick release couplings, which are to be connected to the heat exchangers under study. The trainer is provided with Shell and Tube heat exchanger and a concentric pipe heat exchanger in which both parallel and counterflow arrangements are possible. Optionally other type of heat exchangers may be provided. The shell and tube heat exchanger consists of parallel tubes fitted in a shell containing baffles along its length. The whole unit is insulated. The baffles ensure turbulent water conditions thus providing good heat transfer.
STEFAN BOLTZMANN APPARATUS (HT-28)
S P Tech Equipments has designed the Stefan Boltzmann Apparatus to determine the Stefan Boltzmann constant. The apparatus consists of a Hemisphere fixed to a Bakelite plate, the outer surface of which forms the jacket to heat the hemisphere. A test specimen in the form of copper disc is placed at the center of hemisphere. Hot water obtained from heater in hot water tank is used to heat the hemisphere. The temperatures of hemisphere and test disc are measured with the help of thermocouples. A timer is provided to measure the temperature of disc at the fixed interval.
BOMB CALORIMETER (HT-46)
S P Tech Equipments manufactured Bomb Calorimeter is used for determination of heat of combustion, calorific value & sulphur contents of solid & liquid fuels. The bomb body & lid are machined from corrosion resisting Stainless Steel rod. Its capacity is approx 300 ml. It is provided with high-pressure valve & electrodes. The Calorimeter vessel, water jacket, Stirrer FHP motor driven are provided as per IP Standards. The Bomb calorimeter is supplied with firing unit with electronics digital thermometer, pellet press, ignition wire & pressure gauge on stand with copper pipefitting.
GAS CALORIMETER (Junker’s Type) (HT-045)
S P Tech Equipments manufactured gas Calorimeter is standard equipment consists of chiefly the calorimeter with burner on a tripod stand, gas flow meter and pressure governor. The Calorimeter mainly consists of gas combustion chamber, heat exchanger and water flow system. Heat exchanger is fabricated out of heavily tinned copper sheet. Two thermometers are provided in the water inlet and outlet ports. The exhaust gas outlet is fitted with a thermometer to measure the temperature of exhaust gases. The water vapors from the burnt gas are condensed and collected from bottom of the calorimeter.
REDWOOD VISCOMETER (HT-0101)
S P Tech Equipments made Redwood Viscometer is used for determining the viscosity of liquid, expressed in terms of time taken by the liquid to flow through specified hole made in a metallic cup at a specified temperature. The redwood apparatus measures viscosity in empirical units and not in absolute units such as Centistokes (CS). The redwood viscometer readings are converted to absolute units with the help of IP70 specifications, issued by the Institute of Petroleum, London. This method is primarily used for viscosity determination of liquids which flows in a Newtonian manner. Viscosity measurement with the help of redwood Viscometer is a very simple process and can be easily acclimatize. Also precision set of readings can be easily take
SEPARATING AND THROTTLING CALORIMETER (HT- 0056)
S P Tech Equipments made Separating and throttling calorimeter is designed to study the performance characteristics of separating and throttling calorimeter & evaluate quality of steam (Dryness fraction). The electrical boiler is used to generate steam which is fed to
the calorimeter. Separating calorimeter consists of two concentric chambers, the inner chamber and the outer chamber which communicates with each other through an opening at the top. Throttling calorimeter consists of chamber having a narrow throat, Steam leaving Separating calorimeter passes through the throat & enters the chamber. Thermocouples are provided to measure the temperatures at various points of the system.
PARALLEL AND COUNTER FLOW HEAT EXCHANGER (HT-04)
S P Tech Equipments made Parallel And Couter Flow Heat Exchanger consist of a heat exchanger mounted on a rigid MS structure frame with a control panel. A Centrifugal pump and a sump tank made up of non-corrosive PVC are placed at bottom. A separate hot water boiler is supplied with the equipment. It is fitted with a level switch, relief valve. Hot water from the boiler is fed into one end of the inner tube, which gets cools after passing through the length of the tube. Cold water is circulated through the boiler tubes with the help of centrifugal pump. Cold water will be circulated from tap water of lab will drained to lab-drainage line. Outer tube GI 1’’ dia. This is tube in tube system having inner tube of copper and outer of GI. The heat will be transfer effectively counter flow of both the water.
HEAT TRANSFER FROM A FIN APPARATUS (HT0018)
S P Tech Equipments made Heat Transfer From A Fin Apparatus is used at various places to provide heat-conducting surface to reduce the temperature of attached surface. The apparatus is designed to study the heat transfer in a pin type fin. The apparatus consists of Pin type fin fitted in duct on suction side of blower. Duct is provided with bell-mouth entrance. One end of fin is heated by a heater and heat flows to another end. Orifice is fitted on delivery side of blower to measure the airflow rate. Heat input and temperature distribution along the fin is measured on control panel.
NATURAL CONVECTION HEAT TRANSFER TRAINER (HT-019)
S P Tech Equipments made Natural Convection Heat Transfer Trainer consist of a Stainless steel tube (Copper/MS) fitted vertically in a rectangular duct open at both the ends. The front side of the enclosure is provided with a acrylic sheet for visual display. An electrical heating element is kept inside the stainless steel tube to heat the system. The
surface temperature of the tube is measured at different heights using thermocouples. Surface Heat transfer coefficient for heated vertical cylinder in Natural Convection can be easily demonstrated & calculated with this trainer. S P Tech Equipments have design the system having feature of easy to operate; demonstrated & perform requisite experiments.
HEAT TRANSFER IN FORCED CONVECTION (HT0020)
S P Tech Equipments made Heat Transfer In Forced Convection Apparatus consists of a blower for supply of air to the test section through a heating element. The test section is made up of copper or SS or MS with water jacket to cool the system. Various parameters like heater input, temperature are measured by digital indicators. The pressure drop across the test section is measured by a glass tube manometer. To determine the Heat transfer coefficient in FORCED CONVECTION of Air in a tube and comparison with predicted Heat Transfer Coefficient
HEAT TRANSFER THROUGH COMPOSITE WALL APPARATUS (HT0023)
S P Tech Equipments made Heat Transfer Through Composite Wall Apparatus consist of three slabs of different materials & different thickness. The three slabs are fixed together using nuts & bolts. Electrical heaters give heat energy to this slab unit. Temperature indicator & sensors are used for accurate temperature measurement. For better result the experiment console is placed inside a wooden box having glass at one side. Study of temperature distribution across the width of the composite wall & over all thermal conductance can be easily demonstrated & calculated with this trainer.
THERMAL CONDUCTIVITY OF INSULATING POWDER (HT-35)
S P Tech Equipments has specially designed sphere in sphere type insulating powder apparatus to determine the thermal conductivity of insulating powders. The apparatus consists of two thin walled concentric copper spheres. Inner sphere houses heating element/coil. Insulating powder is filled between the spheres. Heat flows radially outwards from inner sphere to the outer one. Surface temperatures of spheres are measured using thermocouples.
EMISSIVITY MEASUREMENT APPARATUS (HT-39)
All substances emit thermal radiation at all temperatures and also absorb all or a part of radiation coming from surrounding. S P Tech Equipments has designed the apparatus to measure the emissivity of test plate. The test plate comprises of mica heater sandwiched between two circular aluminum plates, the surface of the reference plate is blackened. Both plates are supported on individual brackets in a cabinet with one side perplex to maintain steady atmospheric conditions. Thermocouples are provided to measure the temperature of each plate and that of surrounding enclosure. The heat input is controlled by dimmerstat and is measured by Digital Voltmeter and Ammeter.