HEAT PUMP VACUUM EVAPORATOR hpve

👉 The HPVE system uses the same principle as air conditioners or heat pumps. The refrigerant gas is compressed to high pressure to become superheated vapor and used to provide heat for evaporation at low temperatures under vacuum pressure.

👉 After losing heat, the refrigerant gas passes through the expansion valve (throttle valve) and becomes a subcooling liquid. This liquid is used to condense the water vapor released during evaporation into condensate and absorb its heat before continuing the circulation process.

👉 When operating stably, the HPVE heat pump vacuum evaporator system will have a coefficient of performance (COP) of approximately 3.0 – 4.5.

✅ The energy cost (electricity) for the evaporation process is quite low, with only about 130-155kW of electricity for 1m³ of water to be evaporated, compared to direct evaporation (approximately 540-600kW/m³) or using steam (400-1,100 kg steam/m³).

💧 The system requires no steam, hot water, or fuel and operates entirely on electricity; the refrigeration process also automatically cools the steam into condensate without the need for additional cooling water.

🌡️ Wastewater can be evaporated at very low temperatures (30 – 40oC), therefore the device can be applied to many types of wastewater with high concentrations or containing temperature-sensitive substances, and also produces very good quality condensate.

⚙️ Compressors used in HVE systems are refrigeration compressors used in air conditioners, heat pumps, etc., with low costs due to mass production and widespread application, which also makes maintenance, repair, and replacement easy.

🌿 The system can operate intermittently or in batches, as the refrigerant gas is always available in the system and can start the compressor immediately to generate heat. Intermittent operation does not change energy consumption efficiency.

💰 Water reuse – recovering 80–90% of clean water for reuse in the plant. Reduces investment and operating costs, reduces hazardous waste generation – sludge volume is reduced by up to 90%. This significantly reduces water purchase and wastewater discharge costs.