The main aim of this test is: -
i. To demonstrate the working guidelines of industrial temperature exchangers 2. To investigate the efficiency from the heat exchanger in parallel and counter-top flow preparations 1 . 0 INTRODUCTION
A heat exchanger is products in which temperature exchange occurs between two fluids that enter and exit in different temps. The main function of heat exchanger is to either remove high temperature from a hot liquid or to add heat for the cold smooth. The direction of liquid motion inside the heat exchanger can normally categorised while parallel circulation, counter circulation and cross flow. Intended for parallel flow, also known as co-current flow, the hot and cold fluids flow in the same direction. Both the fluids enter and exit the warmth exchanger on the same ends. Pertaining to counter flow, both the hot and frosty fluids flow in the contrary direction. The two fluids get into and quit the heat exchanger on the reverse ends. Examples in practice in which flowing essential fluids exchange heat are atmosphere intercoolers and preheaters, condensers and boilers in steam plant, condensers, condensers and evaporators in refrigeration models, and many other commercial process in which a liquid or perhaps gas is necessary to be either cooled or heated. Warmth exchanger happens to be hot water and cold water enters the exchanger, in which the process of chilly water gaining some heat and the hot water losing a few takes place, just before they both exit the exchanger. Precisely what is actually going on is, the hot water is heating both the inside and also the outside of the tubes in the exchanger, based on where it is flowing, by what is known as convection. Then the heat is done through the tubes to the other side, both the outside and also the inside, exactly where it is then simply convected back into the chilly water bringing up its temperatures. Convection is a mode of heat transfer that requires motion of some substance that both absorbs heat from a source or gives high temperature to some encircling. Conduction can be described as mode of heat transfer in which the heat can be moving by using a stationary thing or liquid. For a temperature exchanger that flows seite an seite or countertop current then this coefficient of heat transfer is called the overall pourcentage of heat copy. It is worked out using the sign mean temperatures difference, which can be found two different ways, depending on whether the stream is parallel or countertop. 2 . 0 MATERIALS AND APPARATUS
Concentric tube warmth exchanger
PART A вЂ“ Parallel Flow Heat Exchanger
1 ) The flow of cold water started out.
2 . The movement of frosty water was set to parallel to the stream of hot water. 3. The primary switch plus the pump were switched on.
4. The temp controller was set to 60В°C.
5. The hot water circulation rate was set to a couple of L/min as well as the cold drinking water flow charge to 1. your five L/min. 6th. The temp enabled to stabilize before recording the temperatures from T1 to T6.
PART B вЂ“ Counter Circulation Heat Exchanger
1 ) The temperatures controller was set to 60В°C, and the warm water flow charge and chilly water stream rate to 2 L/min and 1 ) 5 L/min respectively. installment payments on your Upon reaching steady-state circumstances, the heat readings coming from T1 to T6 were recorded. PORTION C вЂ“ Flow Charge Variation
1 ) A table flow build was used within the heat exchanger.
2 . The temperature control was set to 60В°C.
several. The frosty and hot water flow level were started 2 . zero, 3. 0, 4. 0 and five. 0L/min.
PART D вЂ“ Water Temperature Variant
1 . A counter movement set up utilized on the high temperature exchanger.
2 . Both the cold and hot water stream rate were set to 2L/min. 3. The water temps were diverse to 50В°C, 55В°C and 60В°C. 5. Upon attaining steady-state conditions, the heat readings by T1 to T6 were recorded.
several. 0 RESULTS AND CONVERSATION
PART A вЂ“ Parallel Flow High temperature Exchanger
Readings| TT1( slim )В°C| TT2( tHmid )В°C| TT3( tHout )В°C| TT4( tCout )В°C| TT5( tCmid )В°C| TT6( tCin )В°C| | 59. 2| 54. 8| fifty-one. 2| 37. 4| 35. 3| twenty eight. 7
Calculations| PoweremittedW| PowerabsorbedW...