Air-conditioning -Case Study- 1

Replace Chiller System from Operational Retail Store -Area 25K Sq. Feet.

  • There are 2 Floors (Ground +1)
  • All 3 sides brick wall and one side glass façade
  • Floor height -12Feet for both the floors.
  • The area is cooled through Chillers (Central Plant) and AHU’s via GSS Ducting.
  • Ducts path have false ceiling otherwise no false ceiling
  • Client don’t want modify the interior layout so, you cant touch the existing ducts.
  • Available ODU Location at Terrace only.
  • Suggest Best suitable option for this space.
Building Section Layout
NoFloorAreaAC TonnageRemark
1Ground12,500SFT50 TRChiller System with AHU
2First12,500SFT50 TRChiller System with AHU
Existing System

Which is the best suitable option for this space?

Following technologies are available in the market.

  1. Split Air-conditioning Unit
  2. Cassette Air-conditioning Unit
  3. Tower Air-conditioning Unit
  4. Ceiling Suspended Ductable Air-Conditioning Unit
  5. Package Air-Conditioning Unit
  6. AHU with DX Unit
  7. Air Cooled VRV/VRF Technology along with AHU
  8. Air Cooled VRF/VRV Technology with Different Indoor Units
  9. Mini Water-cooled System with DX System
  10. Water Cooled VRF/VRV System
  • SPLIT, CASSETTE & TOWER AIRCONDITIONING UNIT :-
    • Pipe Length Limitation
    • Air Circulation Limit
    • Multiple IDU/ODU Units
    • Single Unit is below 4.0/5.0TR
    • Multiple Drain Point feasibility
    • Machine will operate without rest may chances of compressor failure.
    • This option is not suitable
  • CEILING SUSPENDED, PACKAGE & AHU WITH DX AIRCONDITIONING UNIT :-
    • Selection of Suitable Machine to match existing duct designed CFM /TR
    • OEM Support after installation is Unconditional
    • Indoor Unit Machine Noise
    • Inverter technology available
    • Single Unit Available up-to 22TR
    • Air Cooled system
    • Replace with DX Coil AHU
    • High energy Consumption
    • Suitable based on above conditions
  • AIR COOLED VRF/VRV DIFFERNT IDU’S/WITH AHU AIRCONDITIONING UNIT :-
    • Selection of Suitable Machine to match Interior layout
    • Inverter technology available
    • Inbuilt drain pump
    • No Limitation for Piping length
    • Option for Central Controller
    • Easy and smooth operation
    • Air Cooled system
    • Dependant on OEM and Authorized Dealer
    • Suitable based on the above
  • WATER COOLED VRF/VRV WITH AHU/DIFFERNT IDU’S AIRCONDITIONING UNIT :-
    • Selection of Suitable Machine to match Interior layout
    • Inverter technology available
    • Need Expert person for operation
    • Descale equipment to be added
    • Highly Energy efficient
    • No Limitation for Piping ODU to IDU
    • Inbuilt drain pumps
    • Dependant on OEM and Authorised Dealer
    • Suitable based on the above
  • Final top 3 Suitable technology based on the above analysis.
    1. Air cooled VRF/VRV with Cassette type indoor units
    2. Air cooled VRF with AHU’s
    3. Water Cooled VRF/VRV with Cassette type indoor Units
  • Conclusion :-
    • All Inverter compressor
    • This technology comes BLDC Motor fan motor for Indoor unit
    • Project can be completed with very minimum time
    • Easy to install for existing setup without any modification of interior or without removing old AC setup.
    • Project can be completed without loss of business
    • Hassle free installation
    • Easy for maintenance and smooth operation
    • If on site Maintenance team available then option 3 can be worked out
    • Highly Energy efficient
    • Low Noise or Quiet Operation
    • less Space required ODU

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