Calorimeter

Caloriemeters are accurate, direct readability of absorbing levels, rugged, reliable and easy to operate. It consists of a long-lasting photo diode detector, perfect durability with battery backup facility. It consumes < 30W power and temperature range is 10 to 38 degree C.Pipe size range is DN15mm-6000mm and accuracy level is +/-1%. It is mainly used in industries lab applications.

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Detailed Description for Calorimeter

calorimeter is used for calorimetry or the process of measuring the heat of chemical reactions or physical changes and heat capacity. Different types of calorimeter are scanning calorimeters, isothermal microcalorimeters, titration calorimeters and accelerated rate calorimeters are most common types. A simple calorimeter consists of a thermometer attached to a metal container filled with water suspended above a combustion chamber.

 

Structure and Operation of a Basic Calorimeter

The basic calorimeter consists of two vessels outer vessel and inner vessel. The air between both vessels act as a heat insulator it ensuring that heat is not exchanged between the contents of the inner and outer vessels. The calorimeter is equipped with a thermometer and a stirrer. The thermometer measures the temperature of the liquid in the inner vessel and the stirrer is used to distribute heat in the vessel. A ring made of insulating fiber material to hold the inner vessel in the center of outer vessel. The calorimeter has an insulating cover with holes for the stirring rod and thermometer.

To measure specific heat of iron, the inner vessel is filled with 125 ml water. The calorimeter is closed for 30 minutes. During this time, the thermometer should be placed in the water. After 30 minutes the temperature is read and will be recorded.

A test tube is half filled with iron nails. The weight of nails is recorded. Place the filled test tube in boiling water for 10 minutes. The nails absorb the heat and reach a temperature of 100°C. The nails are transferred into inner vessel. The calorimeter is closed immediately.

The highest temperature recorded will be the final temperature of the water and nails. Increase in temperature of  water and temperature loss of iron nails is calculated.

The increased temperature of water is multiplied by 125 ml of water to calculate total heat transfer in calories. The total heat transfer is divided by the temperature loss of iron. Finally, the results is divided by weight of iron nails to calculate the specific heat of iron.

 

Applications

The following are some of the application areas of calorimeters:

  • In biochemistry or chemistry labs
  • In thermodynamics 
  • Study of different materials such as nanomaterials, zeolites and ceramics
  • For assessing thermal hazard potential of Li batteries
  • For examining polymeric materials
  • In solid and liquid fuel test
  • Waste and refuse disposal
  • Study of liquid crystals
  • In pharmaceutical and polymer industries
  • To observe fusion and crystallization events 
  • For Food and metabolic 
  • For propellant and explosive test
  • In educational training

 


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