1. ENERCOV SYSTEMS By
YF Yap
Enercov Co.
Humidity Control Concept

2. ENERCOV (SUZHOU) Co Ltd Block B, B6-7, Suhong Ind Square,
#81 Suhong West Road,
Suzhou Industrial Park,
JiangSu, China
2. ENERCOV (THAILAND) Co Ltd
52/1 Moo 13 Krungthep-Kreeta Road,
Sapansung, Bangkok 10250
Thailand
Humidity Control Concept
3. ENERCOV (SINGAPORE) Co Ltd
80 Genting Lane #06-02, Genting Block,
Ruby Industrial Complex,
Singapore

3. SPECIALISTS TEMPERATURE , HUMIDITY & CONTROLS We are
Humidity Control Concept

4. Desiccant Application Enercov Application Enercov’s Control System
Presentation Details
Company Policies
Desiccant Application
Enercov Application
Enercov’s Control System
Enercov’s Components
Proposals to NTU
Job References
Conclusion
Questions & Answers
Humidity Control Concept

5. Company Policy Assist our customers to reach the best
solution for your needs.
Design your unit.
Use Good Quality Components.
Assemble and Start Up.
Provide Good After Sales Service.
Customer Satisfaction.
Humidity Control Concept

6. Desiccant Application
Humidity Control Concept

7. Desiccant Wheel --------------------------------------------------
Humidified
Exhaust Air
Humidity Control Concept
Outside Air
Dehumidified
Air into
CleanRoom
Humidified
Room Air

8. Desiccant Advantages It can be used for very low
Room Dew Point Temp < 4 deg C
It can be used to achieve RH < 10%
Disadvantages
High Power Consumption due to Heating
Element.
Steps control and not analog.
High Maintenance Cost. Need to change
filter and Desiccant.
Loose Desiccant can contaminate the supply air .
5. Need big floor space.
Humidity Control Concept

9. ANNUAL SAVINGS
Humidity Control Concept

10. ENERCOV
means
ENERGY RECOVERY
Humidity Control Concept

11. DX Coil
Evaporator
Coil
Humidity Control Concept

12. ENERCOV SYSTEM Evaporator Coil Condenser Coil Chilled Water Coil
Humidity Control Concept
Semi Hermetic
Compressor

13. Refrigeration Cycle Diagram
Humidity Control Concept

14. Psychometric Explaination
Outdoor Condition
Cooling
Humidity Control Concept
Heating
Room
Condition

15. DX Coils Advantages Uses Energy Recovery. Very little energy wasted.
VSD control. Analog Control.
Most cost effective to control RH above 30%.
Low Maintenance Cost. Wash the coil with water.
No contamination to supply air due to no direct
contact media.
6. DX coils is build into the AHU. Need less space.
Disadvantages
Limitations to control RH below 30% RH due to
minimum suction gas temp of 3 deg C.
Humidity Control Concept

16. IS NOT COMPLETE WITHOUT
ITS SOUND SIMPLE
BUT ALL THIS THINGS
IS NOT COMPLETE WITHOUT
TOTAL CONTROL
Humidity Control Concept

17. Conventional Air Conditioner
& Desiccant Control
Room RH Sensor Activate when RH above 55%.
Signal send to DDC.
Activate to ON the Desiccant Unit. 3 stages heater
in Desiccant Unit fully ON.
RH of Room Drops to 50%. Then , 1 stage heater OFF.
Once RH drops below 45% , 3 stages heater OFF.
Once RH above 55% , 3 stages heater ON again.
This system uses STEP CONTROL and NOT
ANALOG CONTROL.
MOST IMPORTANTLY Control DEHUMI-
DIFICATION & COOLING SEPARATELY.
Humidity Control Concept

18. Conventional Air Conditioner
Humidity Control Concept
Biosafety Laboratory Concept

19. Humidity Control Concept
RESULTS WITH ENERCOV SYSTEM
Humidity Control Concept
Humidity Control Concept

20. RESULTS WITH ENERCOV SYSTEM
Humidity Control Concept

21. Before we can start to CONTROL
We must know
What are the
CONTROL MODE
Humidity Control Concept

23. Process of the Air Humidity Control Concept Humidification Cooling
Heating
Dehumidification

24. ENERCOV SYSTEM CONTROL Dehumidification, Cooling,
Heating & Humidification to keep
Temperature and Relative Humidity
of the ROOM as
CONSTANT as POSSIBLE.
Humidity Control Concept

25. DX COILS Hot Gas Reheat, Hot Gas Bypass, VSD & DDC Controls System
ENERCOV Humidity Total Control Concept
DX COILS
Hot Gas Reheat,
Hot Gas Bypass,
VSD &
DDC Controls System
Humidity Control Concept

26. Hot Gas Bypass System Hot Gas Bypass System (HGBP)
Humidity Control Concept
Hot Gas Bypass System (HGBP)
Prevents often of compressor cycling on/off and maintains
a very constant of humidity control level.

29. Advanced Controls System
Advanced cooling capacity management
with compressor & fan variable speed control drive
lets us manage widely range of system partial
heat load 40%-100% without recycling of
compressor.
Humidity Control Concept

30. TOTAL CONTROL TEMPERATURE 22 +-1 deg Celcius RELATIVE HUMIDITY 50 +- 5% RH
DDC PROGRAMMABLE
4 x 20 LCD Display
Temperature &
Humidity Sensor
Pco1 Controller

31. Controls System Controls Network Diagram (Option)
Humidity Control Concept
Controls Network Diagram (Option)

32. High Quality Components Used
Air Handling Unit – Carrier, Robatherm, etc
Humidity Control Unit
Carlyle Compressor
CAREL Controller, Panel & Sensors
CAREL Steam Humidifier
Others
Humidity Control Concept

33. ROBATHERM AHU
Humidity Control Concept

34. CARRIER AHU
Humidity Control Concept

35. HUMIDITY CONTROL UNIT
Humidity Control Concept

36. CAREL CONTROLLER, PANEL & SENSORS
DDC PROGRAMMABLE
4 x 20 LCD Display
Humidity Control Concept
Temperature &
Humidity Sensor
Pco1 Controller

37. CAREL STEAM HUMIDIFIER
Humidity Control Concept

38. DANFOSS VSD
Humidity Control Concept

39. CARLYLE COMPRESSOR SELECTION
Humidity Control Concept

40. NANYANG TECHNOLOGICAL
We would like to
Proposed to the
TOP MANAGEMENT of
NANYANG TECHNOLOGICAL
UNIVERSITY ( NTU )
Humidity Control Concept

41. DESIGN ASSUMPTIONS for ASB3AHU01
Room Temp & RH at 22 C & 40%-50% RH
Floor Area metre square
Room Height 3 metre
No of Occupants 50 persons
Exhaust Air litre/sec
Total Cooling Load 78 kW
Sensible Heat Ratio 0.85
Humidity Control Concept

42. EXISTING SYSTEM TOTAL POWER is 103.5 kW
TRANE AHU
MUNTERS
Heating Elements
& Motors 98 kW
Motor kW

43. PROPOSE ENERCOV SYSTEM
Enercov Unit
AHU
AND

44. CONTROLLER, PANEL & SENSORS
ENERCOV’S CONTROL
CONTROLLER, PANEL & SENSORS
DDC PROGRAMMABLE
4 x 20 LCD Display
Humidity Control Concept
Temperature &
Humidity Sensor
Pco1 Controller

45. SCHEMATIC DIAGRAM
Humidity Control Concept

46. ENERCOV CONTROL ITEMS Two sets of Sensors Temperature & Humidity
One at Supply Air and One in the Room.
Solenoid Valve to Control The Reheat Coil.
Control Valve to Control Chilled Water Coil.
Solenoid Valve to Control the HotGassBypass.
Temp Sensor for Air Off Chilled Water Coil.
Temp Sensor for Air Off DX Cooling Coil.
Others
Humidity Control Concept

47. Control Points Schedule
Humidity Control Concept

48. ENERCOV SYSTEM CONTROL
Temperature and RH sensor activate.
Send signal to DDC Controller.
Control Valve for Chilled Water Coil OPEN Fully.
If RH not met, Compressor will be ON.
DX Cooling Coil will dehumidify the air.
If Air temp too low, solenoid valve OPEN too
allow HOT GAS to REHEAT the air.
Once the desired TEMPERATURE and RH are met, the SYSTEM will be STABLELIZED.
Humidity Control Concept

49. Psychometric Process ENERCOV ENERCOV Humidity Control Concept
DX Cooling Coil
( 20kW Only )
Humidity Control Concept
MUNTER’S Dehumid
( 98 kW)
ENERCOV
DX Heating Coil

50. ENERCOV FLEXIBILITY DX Cooling Coil Chilled Water Coil
Total Cooling kW
Sensible Heat Rat
Sensible Heat kW
Latent Heat kW
Chilled Water
Coil
48.4 kW
0.94
45.5kW
2.9kW
Humidity Control Concept
Range for Sensible Heat kW to kW
Range for Latent Heat kW to kW

51. CONTROL Dehumidification, Cooling, Temperature and Relative Humidity
ENERCOV SYSTEM
CONTROL Dehumidification, Cooling,
& Heating to keep
Temperature and Relative Humidity
of the ROOM as
CONSTANT as POSSIBLE.
Humidity Control Concept

52. Humidity Control Concept
RESULTS WITH ENERCOV SYSTEM
Humidity Control Concept
Humidity Control Concept

53. TOTAL CONTROL TEMPERATURE 22 +/-1 deg Celcius 40%-50% RH
and RELATIVE HUMIDITY
40%-50% RH
Humidity Control Concept

54. JOB REFERENCES
Humidity Control Concept

55. JOB REFERENCES Takeda Lace Co Ltd Bangkok.
Biological Safety Lab Level 3 in Ministry of
Health Thailand.
NSM Factory Co Ltd.
UL & CE Standard Testing Room Bangkok.
Ministry of Medicine Thailand Vaccine
Production Class
Humidity Control Concept

56. Takeda Lace Co Ltd Temperature 24 deg C +/- 1 deg C
Relative Humidity 65% +/- 2% RH
DDC micro processor based control system
Steam Humidifier capacity control
Cooling / Heating / Dehumidification /
Hum are controlled in proportional linearity.
Humidity Control Concept

57. Takeda Lace Co Ltd
Humidity Control Concept

58. Ministry of Health Thailand
2. Biological Lab Safety 3
Ministry of Health Thailand
Temperature 23 deg C +/- 1 deg C
Relative Humidity 50% +/- 5% RH
Room Pressure Clean Room Pa
Room Pressure Clean Room + 20 Pa
100% Outdoor Air Intake
DDC micro processor based control system
Hot gas bypass system
Humidity Control Concept

59. Ministry of Health Thailand
Biological Lab Safety 3
Ministry of Health Thailand
Humidity Control Concept

60. Ministry of Health Thailand
Biological Lab Safety 3
Ministry of Health Thailand
Humidity Control Concept

61. 3. NSM Factory Co Ltd Temperature 27 deg C +/- 1 deg C
Relative Humidity < 40% RH
Double series evaporator coils system
Hot gas by pass system
DDC micro processor based control system
Humidity Control Concept

62. 4. UL & CE Standard Testing Room
( Air Conditioner Performance Testing Room
Btu/Hr )
Room Temperature Error +/- 1 deg C
Room Humidity Error +/- 5% RH
Steam Humidifier capacity control
Cooling / Heating / Dehumidification /
Hum are controlled in proportional linearity.
Humidity Control Concept

63. UL & CE Standard Testing Room
Humidity Control Concept

64. UL & CE Standard Testing Room
Humidity Control Concept

65. UL & CE Standard Testing Room
Humidity Control Concept

66. 5. Vaccine Production Clean Room Class 10000
Room Temperature < 22 deg C
Room Humidity 50% +/- 10% RH
Room Pressure 10 – 20 Pa
GMP Clean Room Class 10000
Air Change per Hour 30
Cooling / Heating / Dehumidification /
Hum are controlled in proportional linearity.
Humidity Control Concept

67. Vaccine Production Clean Room Class 10000
Humidity Control Concept

68. CONCLUSION
Humidity Control Concept

69. TEMPERATURE & RELATIVE HUMIDITY
TOTAL CONTROL ON THE
TEMPERATURE & RELATIVE HUMIDITY
Humidity Control Concept
Humidity Control Concept

70. SUMMARY OF ENERCOV SYSTEM
CONTROL TEMPERATURE & RH by
CONTROLLING COOLING, HEATING,
DEHUMIDIFICATION SILMULTANEOSLY.
USES MICROPROCESSOR CONTROL.
HAVE MORE THAN 20 POINTS SENSOR &
CAN BE ADJUSTED TO MEET DESIRED
TEMPEARATURE & RH OF THE ROOM.
USER FRIENDLY.
ASSURANCE THAT TEMPERATURE
22 C +/- 1 deg C.
ASSURANCE RELATIVE HUMIDITY
40% - 50% RH.
Humidity Control Concept

71. ENERCOV is providing a BRAIN CONTROL
for the Air Conditioning System to
CONTROL
the Temperature 22 -/+ 1 deg C and
Relative Humidity % RH
& Save at least 70% Energy Compare
To Desiccant Unit
Humidity Control Concept

72. SAVE ENERGY THE EARTH ITS our JOB to PROTECT for the
FUTURE of OUR CHILDREN
SAVE ENERGY
Thank you