performance analysis and modification of an air conditioner


Published on

increasing the performance of the ac and modifying by adding some extra features

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

performance analysis and modification of an air conditioner

  1. 1. Performance Analysis & Modification of an Air Conditioner Presented By: Devi Prasad Ray Mukesh Swain Subrat Mohanty Syed Azad Ali Vivek Panda Guided By: Prof Tara Prasad Mahapatra
  2. 2. Project Prospective  Design a AC and modify it , such that it can perform in a beneficial way  Ascertaining it’s performance in every temperature condition( hot or cold ), a true Air Conditioner(unlike of tropical a/c which have only cooling facility)  Post Design and Functioning , Extract the vital thermodynamic properties and calculating Performance Factors  Enhancing the Performance , in any feasible way
  3. 3. Understanding a simple A/C There are three phases here: 1. The Functions/ Process Involved 2. The Operating Cycle 3. And The Working
  4. 4. 1.Heating and Cooling 2.Humidity Control 3.Ventilation 4.Filtration The Processes Involved
  5. 5. The Operating Cycle Vapour Compression Cycle
  6. 6. Working
  7. 7. Incorporating Heat Additon Heating & cooling , Vivek’s part
  8. 8. Modification Using a Water Cooler Specifications Multiple Evaporators at Different Temperatures with Single Compressor, Individual expansion Valves Common Back Pressure Valve
  9. 9. Ph Curve
  10. 10. How Efficient is the Air Conditioning System  Performance of A/C, Heat Pump and Chillers Tons of cooling, BTU/h, kW Electrical Input into the System
  11. 11. Coefficient of Performance The COP is a measure of the amount of power input to a system compared to the amount of power output by that system COP= power output/ power input COPmax = Tc/ Th - Tc
  12. 12. Energy Efficiency Ratio The EER is the ratio of output cooling energy (in BTU) to electrical input energy (in Watt-hour) EER = output cooling energy in BTU/ input electrical energy in Wh Unit is BTU/W/h Conversion COP = output cooling energy/input electrical energy = EER BTU/(Wh) 1055J/BTU / 3600J/(Wh) = EER 0.293 Alternatively, EER = COP 3.41
  13. 13. Seasonal Energy Efficiency Ratio The SEER is the ratio of output cooling energy (in BTU) to electrical input energy (in Watt-hour). SEER = output cooling energy in BTU over a season / input electrical energy in Wh during the same season
  14. 14. Heating Seasonal Performance Factor Like SEER, this is a measurement of the efficiency of a system and the units are the same (BTU/h divided by Watt). However, this measures the efficiency of the system in heating mode, not cooling mode It applies only to heat pumps or reversible air conditioning units and not to units that only cool a space CoP = Output Electrical Energy / Input Electrical Energy = HSPF x 0.293
  15. 15. Other Power Standards Kilo-Watt per Ton (kW/ton) The efficiencies of large industrial air conditioner systems, especially chillers, are given in kW/ton to specify the amount of electrical power that is required for a certain power of cooling. Conversion CoP= power output in W/ power input in W= 3.517/ kW/ton Horse Power This is a unit of power and typically is used to specify the size of motors. It may also be used to specify the input power of an air conditioning system
  16. 16. Energy Star Indication for products that have high energy efficiency. It makes it easy for consumers to identify and purchase products that have higher energy efficiency than those products without such designation Systems under 65,000 BTU/h (19 kW) can earn the Energy Star symbol by meeting the minimum efficiency ratings listed in table