Portable dehumidifier and method of operation

A dehumidification system comprising:

• a primary metering device;
• a secondary metering device;
• a secondary evaporator operable to:
• receive a flow of refrigerant from the primary metering device;
• and
• receive an inlet airflow and output a first airflow, the first airflow comprising cooler air than the inlet airflow, the first airflow generated by transferring heat from the inlet airflow to the flow of refrigerant as the inlet airflow passes through the secondary evaporator;
• a primary evaporator operable to:
• receive the flow of refrigerant from the secondary metering device;
• and
• receive the first airflow and output a second airflow, the second airflow comprising cooler air than the first airflow, the second airflow generated by transferring heat from the first airflow to the flow of refrigerant as the first airflow passes through the primary evaporator;
• a drain pan disposed below the primary evaporator and operable to:
• capture water removed from the first airflow by the primary evaporator, wherein the drain pan comprises a primary drain port and an overflow drain port, wherein the overflow drain port is located at a greater height than the primary drain port;
• a secondary condenser operable to:
• receive the flow of refrigerant from the secondary evaporator;
• and
• receive the second airflow and output a third airflow, the third airflow comprising warmer air with a lower relative humidity than the second airflow, the third airflow generated by transferring heat from the flow of refrigerant to the third airflow as the second airflow passes through the secondary condenser;
• a compressor operable to:
• receive the flow of refrigerant from the primary evaporator and provide the flow of refrigerant to a primary condenser, the flow of refrigerant provided to the primary condenser comprising a higher pressure than the flow of refrigerant received at the compressor;
• and
• the primary condenser operable to:
• receive the flow of refrigerant from the compressor;
• and
• transfer heat from the flow of refrigerant to a fourth airflow as the fourth airflow contacts the primary condenser.