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SOLAR POWER VAPOUR ABSORPTION REFRIGERATION SYSTEM

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USE OF SOLAR POWER IN REFRIGERATION SYSTEM

The power incident from the sun to the earth has very much amount of energy that the present consumption rate of all the commercial and general uses. We utilize only 0.1% of total incident sun energy on the surface of earth. Thus solar energy can fulfill our present as well as future needs of energy. That is a reason it called renewable sources of energy. It is also environmental clean source of energy and available at whole part of world where people live. Using of solar energy in the field of refrigeration and air conditioning system it become very economical.
In our project we provide solar heat in generator for heating purpose of vapor compression refrigeration system.

For past few decades, energy has played a prominent role in the development of technology and economy. Energy has now become inevitable factor for production as well. The objective of this project is to develop an environment friendly vapour absorption system. Vapour absorption system uses heat energy, instead of mechanical energy as in vapour compression system, in order to change the condition of refrigerant required for the operation of the cycle. R 717(NH3) and water are used as working fluids in this system. The basic idea of this project is derived from the solar heating panel to obtain heat energy, instead of using any conventional source of heat energy. In this project various observations are done by varying operating conditions related to heat source, condenser, absorber and evaporator temperatures. The drawback of this system is that, it remains idle in the cloudy weather conditions.
COMPONENTS USED IN SOLAR POWERED AQUA-AMMONIA VAPOUR ABSORPTION SYSTEM
• ABSORBER
• PUMP
• HEAT EXCHANGER
• GENERATOR
• SOLAR PANEL
• CONDENSER
• EXPANSION VALVE
• EVAPORATOR
• DC BATTERY
• FAN

Publicada em: Engenharia, Negócios, Tecnologia
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  • There must be some heat rejection from Absorber also, because for steady state, the total of heat input and heat rejection must be same.
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  • can u provide a report on it?
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  • can you expain me about slide 25 ? how you calculate h1 h2 h3 h4 and ....?
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  • @Ike Ezeanya Hey! we are working on a similar project and were looking for some help. Is there any way we could get in touch?
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SOLAR POWER VAPOUR ABSORPTION REFRIGERATION SYSTEM

  1. 1. SOLAR POWERED VAPOUR ABSORPTION SYSTEM Under Guidance of : Presented by: Mr. Minesh Vohra Ajay Kumar Vaishya (11012679) Ajay Pandey (11013442)
  2. 2. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  3. 3. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  4. 4.  INTRODUCTION  A solar heat operated system.  Quite similar to vapor compression system.  Compressor is replaced by pump, generator and absorber.  Ammonia is used as refrigerant i.e R-717.  Heat in generator is supplied by solar electrical power stored in battery.  Condensation, expansion and evaporation processes are same as VCR system.
  5. 5. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  6. 6.  OBJECTIVE  To make effective refrigeration making use of Solar Energy.  One time investment with minimum running expense.  Pollution Free system.  Refrigeration system having “Low Maintenance Cost ”.
  7. 7. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  8. 8.  COMPONENTS  ABSORBER  GENERATOR  SOLAR PANEL  CONDENSER  EXPANSION VALVE  EVAPORATOR  DC BATTERY  FAN
  9. 9.  ABSORBER  Used to store the mixture of water and ammonia in particular proportion .  Function is to produce the required aqua ammonia solution.  Low pressure NH3 vapour is absorbed by the weak solution of NH3 which is stored in the absorber.
  10. 10.  GENERATOR  Heats the strong aqua ammonia solution up to the boiling temperature of ammonia solution to produce ammonia vapors.  Here, solar panel is used for the heating purpose.  Separates the dissolved ammonia from the water- ammonia solution.
  11. 11.  CONDENSER  A device or unit used to condense a substance from its gaseous to its liquid state.  Application areas include air conditioning, , industrial chemical processes such as distillation, steam power plants and other heat-exchange systems.
  12. 12.  EXPANSION VALVE  Controls the amount of refrigerant flow into the evaporator .  Cause a pressure drop (Isenthalpic) of the working fluid.  Causes sudden drop in temperature.  Type of expansion valves used capillary type expansion valve.
  13. 13.  EVAPORATOR  Absorption of heat from the surrounding.  heat transfer is done by forced convection or natural convection.  Application areas : food and beverage industry, pharmaceutical industry.
  14. 14.  SOLAR PANEL  The electricity for heating coil is obtained from the solar panel.  The solar panel used in the project is of 60W and 4A.  Usually made up of p-n silicon semiconductors, aluminium or fibre glass. Fibre glass is widely used.
  15. 15.  FAN DC BATTERY 12V & 9Amp
  16. 16. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  17. 17.  LAYOUT OF SOLAR POWERED VARS
  18. 18. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  19. 19.  PROCESS DESCRIPTION  Ammonia solution is pumped to generator with the help of pump.  Ammonia solution is heated to a temperature suitable for separating ammonia vapor from ammonia solution.  Ammonia vapors condenses in the condenser .  Liquid ammonia from condenser expands through expansion valve.  Chilled ammonia causes cooling effect in the evaporator.  Finally ammonia is transferred to absorber and the whole process continues.
  20. 20. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  21. 21.  Vapor Absorption Refrigeration System Setup Condenser Expansion Valve Generator Absorber Pump
  22. 22. VARS – Specifications  ABSORBER Length= 10 cm, Breadth= 10 cm, Height= 12.5 cm. Material used: Galvanized iron.  GENERATOR Length= 10 cm, Breadth= 10 cm, Height= 12.5 cm. Material used: Galvanized iron.  HEATING COIL It is made of nichrome wire. Specifications: Length 20 cm
  23. 23. Cont….  EXPANSION COIL Length = 35cm Outer diameter= 0.175 cm Material used: Copper  CONDENSER Length= 15 cm, Width= 8 cm, Height= 17 cm. Number of turns= 28 Inner diameter = 0.4297 cm.  CAPILLARY TUBE Length= 35 cm, Outer diameter=0.4297 cm.
  24. 24. LAYOUT OF SOLAR POWERED VARS
  25. 25.  CALCULATIONS  Heat absorbed in evaporator = mr (h6 – h5) = 210 kJ/min.  Heat generated in generator = mr (h3 – h2) = 304.2 kJ/min.  Heat rejected from condenser = mr (h4 – h3) = 211.6 kJ/min.  Work input to pump = 9.6 W  COP = heat absorbed in evaporator work done by pump + heat supplied in generator = 0.69
  26. 26. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  27. 27.  ADVANTAGES OF SOLAR ENERGY AS POWER SOURCE  Non- polluting and clean source of energy.  Renewable source of energy.  Immense source of energy.  Capacity to satisfy present and future needs.  High intensity in summer season.
  28. 28. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  29. 29.  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  Uses low grade energy like heat. Ex- exhaust from I.C engine.  Less moving parts.  Smooth operation.  Can work on lower evaporator pressures, without affecting the COP.  Very efficient for higher load conditions.
  30. 30. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  31. 31.  APPLICATIONS  Air conditioning machines.  Food Processing Industries.  Jute Industries.  Commercial purposes.
  32. 32. OVERVIEW  INTRODUCTION  OBJECTIVE  COMPONENTS  LAYOUT  PROCESS DESCRIPTION  SPECIFICATIONS  ADVANTAGES OF SOLAR POWER  ADVANTAGES OF VAPOUR ABSORPTION REFRIGERATION SYSTEM  APPLICATIONS  CONCLUSION
  33. 33.  CONCLUSION  Using Solar Energy as the power source of the system proved to be feasible.  Solar Energy being a renewable source of energy proved to be efficient as compared to using electrical energy or steam at the same place .  With the flow of ammonia through the system, we were able to use it as an air conditioner and that too with the help of renewable and non-polluting source of energy, i.e. , solar energy.

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