HT - 10 HEAT TRANSFER LABORATORY EQUIPMENTS       

     
 

SHELL AND TUBE HEAT EXCHANGER (water to water type)           
To determine heat transfer rate, heat transfer coefficient, LMTD. The unit consist a two design ,mild steel shell houses the copper pipes. End box for shell which carriers a baffle at the center to make the heat exchanger of two pass type. cold fluid passes out side the tubes in the shell. Hot water flows inside the tubes. Temp. of hot water & cold fluid measured by thermometer.flow rates and temp. of hot and cold fluid can measured. 

10201
   
   
 
SHELL AND TUBE HEAT EXCHANGER ( air to water type )             
To determine Heat transfer rate, heat transfer coefficient, LMTD & effectiveness of heat exchanger in laminar as well as turbulent flow of air. A m..s. shell,in which copper tubes are fitted, baffle in the end box make the tube arrangement two pass type. Cold fluid is air enters the shell and flows over the tube. Hot fluid is water obtained from geyser & flows through the tubes. 25% cut buffles are provided in the path of air. Measuring tank for water flow rate, Orifice with water manometer for air flow, thermometer for inlet and out let temperature

10202
   
     
 
HEAT EXCHANGER SECTION 
PLATE TYPE HEAT EXCHANGER                                                    
To determine heat transfer rate, LMTD, heat transfer coefficients and effectiveness of heat exchanger.The unit consists cold and hot fluid obtained from geyser. Inlet and outlet connections are positioned to make the Exchanger counter flow type. Hot and cold fluid pass between alternate plates.                        
10210
   
     
 
REGENERATIVE HEAT EXCHANGER APPARATUS                            
The unit consists of two columns filled with steel balls. Two blowers are provided for hot and cold air. The columns are filled with steel balls One column is getting heated by hot air while other by cold air. Thus alternately columns are heated and cooled and operation is continuous.
10220
   
     
 
THERMAL CONDUCTIVITY SECTION
THERMAL CONDUCTIVITY OF METAL ROD                                      
Determines thermal conductivity of metal rod. a copper bar, heated at one end, heat sink at other end, teat section of bar is properly insulated & thermocouples are attached for temperature. Heat conducted through the section of bar is measured by heat collection in water cooled heat sink.A panel compresing of controls and measurement is provided.
10230
   
     
 
THERMAL CONDUCTIVITY OF INSULATING POWDER                     
Determines thermal conductivity of insulating powder by sphere in sphere method. A copper sphere in which a mica heater is fitted. the sphere is surrounded by another bigger sphere and between the two sphere,the test insulating powder is filled. Heat of the heater radically flows outwards in all directions through powder. temp. Across the powder are measured. by knowing input to the heater conductivity of powder can be dtermined. 
10240
     
     
 
THERMAL CONDUCTIVITY OF LIQUID                                              
An electrical heater sandwitched between aluminum plates. heat loss from hot plate is prevented by using two guard heaters and heat of hot plate is made to flow through specimen. cold plate on opposite face of liquid removes heat from liquid by circulation of water. Input to heaters can varied & measured. Digital temp Indicator to measure temperature. 
10250
     
     
 
THERMAL CONDUCTIVITY OF INSULATING SLABS                       
BY 10260 GUARDED HOT PLATE METHOD 
To determine thermal conductivity of specimen,main heater and radial heater sandwitched between copper plates. Specimen in the form of slabs of equal thickness are placed on either sides of heaters and cooling plates. other side of specimen water is circulated. Radial guard heaters ensures all heat of main heater passes axially through 
the specimen, collected by cooling plates. By knowing the themp. And heat input, thermal conductivity of specimen can be calculated. 

10260
     
  THERMAL CONDUCTIVITY OF GASES                                           
10270
 

 

   
 
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