ENERCOV SYSTEMS By YF Yap Enercov Co. Humidity Control Concept

ENERCOV (SUZHOU) Co Ltd Block B, B6-7, Suhong Ind Square, #81 Suhong West Road, Suzhou Industrial Park, JiangSu, China 215021 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 349565

SPECIALISTS TEMPERATURE , HUMIDITY & CONTROLS We are Humidity Control Concept

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

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

Desiccant Application Humidity Control Concept

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

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

ANNUAL SAVINGS Humidity Control Concept

ENERCOV means ENERGY RECOVERY Humidity Control Concept

DX Coil Evaporator Coil Humidity Control Concept

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

Refrigeration Cycle Diagram Humidity Control Concept

Psychometric Explaination Outdoor Condition Cooling Humidity Control Concept Heating Room Condition

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

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

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

Conventional Air Conditioner Humidity Control Concept Biosafety Laboratory Concept

Humidity Control Concept RESULTS WITH ENERCOV SYSTEM Humidity Control Concept Humidity Control Concept

RESULTS WITH ENERCOV SYSTEM Humidity Control Concept

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

Process of the Air Humidity Control Concept Humidification Cooling Heating Dehumidification

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

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

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.

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

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

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

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

ROBATHERM AHU Humidity Control Concept

CARRIER AHU Humidity Control Concept

HUMIDITY CONTROL UNIT Humidity Control Concept

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

CAREL STEAM HUMIDIFIER Humidity Control Concept

DANFOSS VSD Humidity Control Concept

CARLYLE COMPRESSOR SELECTION Humidity Control Concept

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

DESIGN ASSUMPTIONS for ASB3AHU01 Room Temp & RH at 22 C & 40%-50% RH Floor Area 360 metre square Room Height 3 metre No of Occupants 50 persons Exhaust Air 200 litre/sec Total Cooling Load 78 kW Sensible Heat Ratio 0.85 Humidity Control Concept

EXISTING SYSTEM TOTAL POWER is 103.5 kW TRANE AHU MUNTERS Heating Elements & Motors 98 kW Motor 5.5 kW

PROPOSE ENERCOV SYSTEM Enercov Unit AHU AND

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

SCHEMATIC DIAGRAM Humidity Control Concept

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

Control Points Schedule Humidity Control Concept

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

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

ENERCOV FLEXIBILITY DX Cooling Coil Chilled Water Coil Total Cooling 31.58 kW Sensible Heat Rat 0.51 Sensible Heat 16.1 kW Latent Heat 15.5 kW Chilled Water Coil 48.4 kW 0.94 45.5kW 2.9kW Humidity Control Concept Range for Sensible Heat 9.1 kW to 61.6 kW Range for Latent Heat 0.58 kW to 18.4 kW

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

Humidity Control Concept RESULTS WITH ENERCOV SYSTEM Humidity Control Concept Humidity Control Concept

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

JOB REFERENCES Humidity Control Concept

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 10000. Humidity Control Concept

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

Takeda Lace Co Ltd Humidity Control Concept

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 - 20 Pa Room Pressure Clean Room + 20 Pa 100% Outdoor Air Intake DDC micro processor based control system Hot gas bypass system Humidity Control Concept

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

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

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

4. UL & CE Standard Testing Room ( Air Conditioner Performance Testing Room 12000 - 72000 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

UL & CE Standard Testing Room Humidity Control Concept

UL & CE Standard Testing Room Humidity Control Concept

UL & CE Standard Testing Room Humidity Control Concept

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

Vaccine Production Clean Room Class 10000 Humidity Control Concept

CONCLUSION Humidity Control Concept

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

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

ENERCOV is providing a BRAIN CONTROL for the Air Conditioning System to CONTROL the Temperature 22 -/+ 1 deg C and Relative Humidity 40 - 50% RH & Save at least 70% Energy Compare To Desiccant Unit Humidity Control Concept

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