Dehumidifiers revew bussinesss22222.pptx

a review for dehumidefire for bussiness purpouse

1. Dehumidifiers Explore the core principles and advanced functionalities of modern dehumidification systems .

2. Cycle layout:

3. How a Dehumidifier Works A dehumidification system extracts water from humid air, supplying dry air to maintain a comfortable and healthy climate. It operates on the condensation principle, using a refrigeration cycle to remove moisture. 01 Air Intake Humid air is pulled in through a filtered vent by an extract fan. 02 Condensation Air passes over a refrigerated coil, cooling below dew point, causing moisture to condense into water droplets. 03 Water Disposal Condensed water collects in a tank; the unit stops when full to prevent overflow. 04 Dry Air Heating Dry air is reheated by a condenser coil to room temperature before being released. 05 Continuous Operation A humidistat monitors humidity, activating the system until the desired level is met.

4. Key Components A refrigerant-type dehumidification system typically comprises several vital components working in harmony. Extract Fan Draws moist air into the device for processing. Refrigerant Coil Cools air to condense water vapor into liquid droplets. Evaporator Coil Reheats dehumidified air before release. Compressor The core of the refrigeration cycle, enabling cooling and heating. Expansion Device Reduces refrigerant pressure and temperature. Condensate Tank Collects or disposes of condensed water. Humidistat Monitors and controls room humidity levels.

5. Model Comparison: Condair DA Series Features & Functions Wall/ceiling mounting Integrated hygrostat Automatic defrost Energy-efficient drying Technical Specifications Refrigerant: R407C Throttling method: Capillary tube Control & Protection: Built-in hygrostat, overload, frost protection Components: Compressor evaporator condenser fan integrated humidistat.

6. Model Comparison: Gree CF0.5E / CF0.8E / CF0.5M / CF0.8M Features & Functions Portable unit, compact design Manual/PCB control Bucket water collection Technical Specifications Refrigerant: R134a Throttling method: Capillary tube Control & Protection: PCB control (for “E” types), float switch, fuse protection Components: Axial fan rotary compressor evaporator (aluminum fin-copper tube) condenser.

7. Model Comparison: Fancy Series (e.g., GDN12AJ, GDN16AJ) Features & Functions Digital display, humidity setting, continuous drainage, automatic defrost, multiple fan speeds. Technical Specifications Refrigerant: R134a. Throttling method: Capillary tube. Control & Protection: Microprocessor-based PCB, bucket full sensor, auto restart, temperature sensor, overload protection Components: Rotary compressor, evaporator coil, condenser coil, electronic PCB, fan motor, water bucket.

8. Model Comparison: Humifix Series (10 / 20) Features & Functions Set humidity operation, continuous dehumidification mode, electronic display, automatic defrost. Technical Specifications Refrigerant: R134a. Throttling method: Capillary tube. Control & Protection: Electronic PCB with multiple protections (sensor-based), overload, compressor protection, bucket full cut-off. Components: Rotary compressor, evaporator coil, condenser coil, electronic PCB, fan motor,

9. Model Comparison: Dectron DS Series Features & Functions High-capacity pool and space dehumidification, optional pool water heating, optional space heating (hot water, electric, or gas), multiple ducting options, BMS & WebSentry remote monitoring, TouchDisplay panel Technical Specifications Refrigerant: R410A (newer models) Throttling method: Expansion valve Control: Touchscreen control, remote BMS, alarms, overload protection, refrigerant pressure sensors, web-based monitoring. Components: One or two compressors, evaporator, condenser (air or water-cooled), pool water heating coil, space heating coil, advanced control system.

10. Model Comparison: LG UD701KOG3P Features & Functions 70-pint portable unit Digital humidity setting, 12-hr timer Safety standby (auto shut-off after 23 hrs) Bucket full indicator, filter check reminder auto defrost, continuous drainage option. Technical Specifications Refrigerant: R410A Throttling method: Capillary tube Control: Microprocessor control, compressor 3-min restart delay, standby shutdown, bucket full cut-off, filter alarm, thermal protection. Components: Rotary compressor, fan, evaporator, condenser, electronic display, bucket with float switch, filter.

11. Dectron DS Series System Block Diagram

12. Control System: Inputs & Outputs Component Input Signals/Data Output Signals/Control Signal Type Notes RA Combo Sensor - Air temperature (return air)- Humidity (return air) None Analog (0-10V) Primary input for dehumidification control OA Temp Sensor - Outdoor air temperature None Analog (0-10V) Economizer mode/ventilation control SA Temp Sensor - Supply air temperature None Analog (0-10V) Freeze protection, space heating feedback Pressure Transducers - Refrigerant suction/discharge pressure None Analog (4-20mA) Compressor safety control Pressure Switches - Refrigerant pressure thresholds Safety lockout signal Digital (On/Off) Redundant safety backup Main Control Board - All sensor data- User setpoints- Alarm triggers - Compressor staging- Valve control- Blower speed Digital/Analog/PWM Central processing unit with control logic Main Blower - Speed command - Airflow feedback (if equipped) PWM/Variable (0-10V) Pre-set variable speed; CFM based on occupancy mode Compressor - Start/stop command - Operational status Digital (On/Off) Staged activation with pump-down sequence Solenoid Valves (Reheat/AC/Pool) - Open/close command None Digital (On/Off) Directs heat rejection to reheat/pool/outdoors OA Damper - Position command - Position feedback (if equipped) Analog (0-10V) Modulates outdoor air intake Space Heater - On/off or % output command - Status feedback Digital or Analog Type-dependent: electric (On/Off), hydronic (0-10V valve control) Condenser Fans - Speed command None Digital/EC Control Two-speed (On/Off) or EC (0-10V) based on head pressure Fluid Cooler Pump - Start/stop command - Flow status Digital (On/Off) Engaged with condenser fans TouchDisplay OP - User inputs (setpoints, commands) - System status- Alarms- Sensor readings CAT5/CAT6 (Ethernet) Local HMI; max 1000' cable length WebSentry Module - Sensor/status data from control board - Remote commands- Notifications Ethernet (TCP/IP) RJ-45 on Core Module (metal jack) BMS Interface - BACnet: Ethernet data- LON/Modbus: Serial data - Control overrides- Data export BACnet/IP or Serial Protocol-dependent wiring

13. Thank You for Your Attention! Any QAs? 🤔 Presented by : Nada Abdelsattar Energy Resources and Mechanical Power EngineerE-JUST UniversityEmail: ​[email protected]​ We appreciate your time and interest in our exploration of dehumidifier technologies and control systems.