8/19/2019 HRW Selection

1/2

ECOFRESH Heat Recovery Wheels

Performance and Savings Analysis

15-Dec-15

PROJECT : Skypark Cyberjaya Hotel

AREA : HRW-1

MODEL HRW - 1900 25,163 CMH 24,313 CMH

35.0 C DBT 30.1 C DBT 24,313 CMH Cooling Coil 28.0 C WBT 24.1 C WBT 30.1 C DBT  ( A.H.U. ) 20.7 Gm/Kg 16.2 Gm/Kg 16.2 Gm/Kg

  FRESH AIR SUPPLY AIR SUPPLY  

0 CMH   AIR 26.0 C DBT12.4 Gm/Kg 24,313 CMH

  EXHAUST AIR RETURN AIR   12.8 C DBT17,509 CMH 16,659 CMH   RETURN 12.2 C WBT

33.2 C DBT 26.0 C DBT   AIR  8.5 Gm/Kg19.0 Gm/Kg 60.0 %R.H.

12.4 Gm/Kg

Energy Consumption Ratio KW / TON : 0.7Sensible Latent Total Electricity Cost : RM. 0.365 / KWh

Without Btu/Hr 618,192 850,444 122.4 TR Working Hrs./Day : 24 Working Days/ year : 365

Heat Wheel KW 181.2 249.3 430.4 KWr KWH Saved in Aircon Operation / year 114,567With Btu/Hr 481,880 536,011 84.8 TR KWH spent /yr.on Wheel Oper.+ Pr.Drop 34,287

Heat Wheel KW 141.2 157.1 298.3 KWr Nett Electricity saving KWH / year 80,280

22% 37% 31% 29,302

MODEL : HRW - 1900 ( 2.0 MS )    Sensible Latent Total Tons

BTUH 136,312 314,433 450,745 37.56Air Flow 24,313 CMH 16,659 CMH KW 40.0 92.2 132.1RECOVERY EFFICIENCY  Moisture Transfer  128.4 Kg/Hr

Sensible 54.4% 79.5%Latent 54.4% 79.5% Drive Motor : 415 V / 3 Ph./ 50 Hz ; 0.5 HPPr. Drop  0.78 "W.G. 0.49 "W.G. Equipment Dimensions - mm

199 Pascals 124 Pascals Width : 2030 Height : 2030 Depth : 325Purge Air = 850 CMH Weight : 329 Kgs

30.0 C DBT 63.7 % RH

24.4 C WBT 16.7 Gm/Kg

version : v : 010901 Type = 200 mm - MS

PROJECTED SAVINGS IN OPER. COST REDUCTION IN AIRCON PLANT SIZE 

CONDITIONED SPACE 

Monsoon

Operation 

% Capacity Reduction

with Heat Wheel

Required AirCon Plant Capacity

Ambient Conditions Considered for EnergySavings Analysis

SPECIFICATIONS 

 EXHAUST SIDE 

ENERGY RECOVERY 

 SUPPLY SIDE 

Projected Saving per Year RM.

HEAT RECOVERY WHEEL

WHEEL MEDIA : Wheel Media shall be made of alternating layers of flat and corrugated Aluminium Foil, which will be coated with MolecularSieve 3Å** (Ecosorb 300),which limits the cross contamination to absolute minimum and ensure exclusion of contaminants in the air streams,while transferring water vapour molecules i.e. selective adsorption.Wheel shall not be made of Oxidised / etched / silica gel coated Media.Dust particles upto 800 micron shall pass through media without causing choking of poresPERFORMANCE : Both Sensible and Latent Recovery Efficiency shall not be less than specification.Seals :  Labyrinth Type seals shall be provided which do not touch media. Wheel shall not have Rubber / Brush type of Seals that rub againstthe delicate media.Drive :  Constant Speed Belt Drive shall be provided.

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8/19/2019 HRW Selection

2/2

ECOFRESH Heat Recovery Wheels

Performance and Savings Analysis

15-Dec-15

PROJECT : Skypark Cyberjaya Hotel

AREA : HRW-2

MODEL HRW - 2000 27,480 CMH 26,538 CMH

35.0 C DBT 29.4 C DBT 26,538 CMH Cooling Coil 28.0 C WBT 23.5 C WBT 29.4 C DBT  ( A.H.U. ) 20.7 Gm/Kg 15.5 Gm/Kg 15.5 Gm/Kg

  FRESH AIR SUPPLY AIR SUPPLY  

0 CMH   AIR 26.0 C DBT12.4 Gm/Kg 26,538 CMH

  EXHAUST AIR RETURN AIR   12.8 C DBT23,734 CMH 22,792 CMH   RETURN 12.2 C WBT

32.6 C DBT 26.0 C DBT   AIR  8.5 Gm/Kg18.4 Gm/Kg 60.0 %R.H.

12.4 Gm/Kg

Energy Consumption Ratio KW / TON : 0.7Sensible Latent Total Electricity Cost : RM. 0.365 / KWh

Without Btu/Hr 674,784 928,297 133.6 TR Working Hrs./Day : 24 Working Days/ year : 365

Heat Wheel KW 197.8 272.1 469.8 KWr KWH Saved in Aircon Operation / year 143,742With Btu/Hr 503,759 533,790 86.5 TR KWH spent /yr.on Wheel Oper.+ Pr.Drop 42,291

Heat Wheel KW 147.6 156.4 304.1 KWr Nett Electricity saving KWH / year 101,451

25% 42% 35% 37,030

MODEL : HRW - 2000 ( 2.0 MS )    Sensible Latent Total Tons

BTUH 171,025 394,507 565,532 47.13Air Flow 26,538 CMH 22,792 CMH KW 50.1 115.6 165.7RECOVERY EFFICIENCY  Moisture Transfer  161.2 Kg/Hr

Sensible 62.6% 72.9%Latent 62.6% 72.9% Drive Motor : 415 V / 3 Ph./ 50 Hz ; 0.5 HPPr. Drop  0.77 "W.G. 0.63 "W.G. Equipment Dimensions - mm

195 Pascals 161 Pascals Width : 2130 Height : 2130 Depth : 325Purge Air = 941 CMH Weight : 345 Kgs

30.0 C DBT 63.7 % RH

24.4 C WBT 16.7 Gm/Kg

version : v : 010901 Type = 200 mm - MS

PROJECTED SAVINGS IN OPER. COST REDUCTION IN AIRCON PLANT SIZE 

CONDITIONED SPACE 

Monsoon

Operation 

% Capacity Reduction

with Heat Wheel

Required AirCon Plant Capacity

Ambient Conditions Considered for EnergySavings Analysis

SPECIFICATIONS 

 EXHAUST SIDE 

ENERGY RECOVERY 

 SUPPLY SIDE 

Projected Saving per Year RM.

HEAT RECOVERY WHEEL

WHEEL MEDIA : Wheel Media shall be made of alternating layers of flat and corrugated Aluminium Foil, which will be coated with MolecularSieve 3Å** (Ecosorb 300),which limits the cross contamination to absolute minimum and ensure exclusion of contaminants in the air streams,while transferring water vapour molecules i.e. selective adsorption.Wheel shall not be made of Oxidised / etched / silica gel coated Media.Dust particles upto 800 micron shall pass through media without causing choking of poresPERFORMANCE : Both Sensible and Latent Recovery Efficiency shall not be less than specification.Seals :  Labyrinth Type seals shall be provided which do not touch media. Wheel shall not have Rubber / Brush type of Seals that rub againstthe delicate media.Drive :  Constant Speed Belt Drive shall be provided.

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