Screw-type ground-source heat pump unit
Screw-type ground source heat pump unitA novel heat pump technology that utilizes the energy of shallow, ambient temperature groundwater as an energy source. This technology can simultaneously provide heating and cooling, as well as supply domestic hot water. It harnesses the heat exchange between water and geothermal energy (groundwater, soil, or surface water) as the heat source for water-source heat pumps. In winter, it extracts heat from geothermal energy to supply indoor heating, with geothermal energy acting as the "heat source." In summer, it extracts indoor heat and releases it into groundwater, soil, or surface water, with geothermal energy functioning as the "cooling source."
"It is a source that emits no waste gases, wastewater, or sludge to the outside, making it an ideal 'green technology.' From an energy perspective, it is a renewable resource that is inexhaustible."
The screw-type water (ground) source heat pump unit features high energy efficiency ratio, compact structure, attractive appearance, easy operation, and a simple refrigeration system process. The refrigeration and heating process is achieved through the pipeline switching of the water system. Currently, water source heat pump units are widely used in shopping malls, hotels, inns, hospitals, factories, office buildings, northern centralized heating, and industrial heat recovery applications.
The screw ground-source heat pump units primarily feature the following characteristics:
- Compact structure, smooth operation
The condenser and dry evaporator of the unit are equipped with high-efficiency heat transfer tubes. The main unit features an imported semi-hermetic twin-screw compressor, which boasts numerous advantages such as compact structure, small size, light weight, and minimal installation space. The semi-hermetic twin-screw compressor has fewer moving parts, utilizing a 5:6 ultra-high-efficiency screw rotor, ensuring no direct wear between rotors and high reliability. As the screw compressor is a continuous compressor without pulsation, the water (ground) source heat pump chiller unit exhibits stable performance, low noise, minimal vibration, and smooth operation. Its efficiency is 20% to 30% higher than reciprocating compressors, and it has obtained ISO 9001 international quality certification and patents in multiple countries in Europe and America.
- Comprehensive energy control system
The unit is equipped with a four-level capacity control system, energy regulation: [100, 75, 50, 25 (or start, 0%)], automatically adjusts the unit's start/stop based on load changes for greater energy efficiency.
- Independent refrigeration cycle system
The high-capacity screw ground-source heat pump unit features two or more independent refrigeration circuits, ensuring that if one circuit fails/maintains, the other can continue to operate normally. It has redundant functions, making it particularly suitable for use in environments where air conditioning and industrial operations must remain uninterrupted.
- Easy and intuitive operation
- Water Source (Ground) Heat Pump Chiller Unit. The screen can display the operating status of the water source heat pump unit at any time, and can be shown in both graphical and textual tabular parameters, making it clear at a glance.
- Microcontroller's protective functions
Protected against excessive high temperature of compressor coil, preheating of engine oil with timed on/off switch, cold water flow switch, protection against low outlet water temperature of cold water, Y-△ startup failure protection, over-temperature protection of exhaust gas, overload protection of compressor, power failure memory function, protection against frequent start/stop, abnormal voltage protection, low oil level protection, high and low pressure protection, etc.
- High degree of automation and control
Fully featured, capable of managing the start/stop program for screw-type water source heat pump units, timing control, pump management, full-function fault alarms, and fault self-diagnosis functions. Equipped with an RS485 communication interface for easy centralized and remote monitoring of the units by users.
- Significant environmental benefits:
An energy conversion heating and cooling system that utilizes ground water as a source of heat and cold. It eliminates the need for boiler room systems using coal, gas, or oil, thus avoiding combustion processes, smoke emissions, and pollution. For cooling, it bypasses cooling towers, thereby preventing noise, mold contamination, and water consumption.
- Energy-saving and environmentally friendly
The electricity used is a clean energy source, and the well-designed water-source heat pump unit consumes up to 30% less electricity compared to air-source heat pumps, and over 70% less than electric heating. Therefore, water-source heat pumps not only save energy but also reduce and lower the pollution emissions and greenhouse gas effects generated during the initial energy consumption of power generation.
- Easy to install
All screw-type ground source heat pump units have been fully assembled, tested, and charged with refrigerant and lubricating oil at the factory. Users can simply connect the water and electrical circuits to start using them, reducing installation and commissioning time.
