Compared to the output temperature of 55°C using conventional heat pump technology, high-temperature ground source heat pumps are capable of achieving heating temperatures of 60°C or higher without raising the temperature of the low-temperature heat source (such as the ground). To maintain high efficiency and stable operation under these conditions, several key technologies need to be addressed.

One of the critical components is the selection of the compressor. Currently, common types of compressors used in heat pump systems include screw compressors, fully enclosed scroll compressors, and semi-closed piston compressors. After analyzing the performance characteristics of each type, it has been found that semi-closed piston compressors are typically preferred for high-temperature heat pump applications due to their reliability and ability to handle higher pressure ratios.

Another important factor is the choice of refrigerant. For high-temperature heat pump systems operating at a maximum working pressure of less than or equal to 25 BAR, R134A is often used as the refrigerant. This environmentally friendly option does not harm the ozone layer and produces no harmful emissions, making it a sustainable choice for modern systems.

The design of the circulation system also plays a crucial role. Many high-temperature heat pump units employ multiple independent refrigeration cycles that share a single water circulation system. This approach helps reduce the operating temperature and pressure of the condensing equipment, leading to improved efficiency and longer service life.

In addition, the integration of a special heat exchanger—often referred to as an economizer—can significantly enhance the stability and performance of the system. This component helps improve the overall thermodynamic efficiency by optimizing the refrigerant flow and reducing the workload on the compressor.

Finally, advanced system control optimization is essential for ensuring long-term stability and operational efficiency. By implementing intelligent control strategies that adjust the compressor’s operating time and optimize its performance based on real-time conditions, the system can adapt to changes in ground temperature and heating demand during winter. This not only improves energy efficiency but also extends the lifespan of the equipment, making it a more reliable and cost-effective solution for high-temperature heating applications.

Construction Hoist Parts

Construction Hoist parts including Construction Hoist Mast Section , passenger hoist wall tie, Passenger Hoist Cage and other Hoist Steel Structure Parts. Construction Hoist Safety Device and Hoist Electrical Parts . BQ's construction hoist has the same design with Gjj construction hoist.

Some common spare parts for a passenger hoist include:

1. Wire Rope : Used for lifting and lowering the hoist cage.
2. Safety devices: Including limit switches, overload sensors, and emergency stop buttons.
3. Electric motor: Powers the hoist system.
4. Brake system: Ensures the hoist cage remains stationary when not in use.
5. Control panel: Controls the operation of the hoist, including the direction and speed of movement.
6. Gearbox: Transfers power from the motor to the wire ropes.
7. Bearings: Used to reduce friction and ensure smooth operation.
8. Electrical components: Such as relays, contactors, and fuses.
9. Hoist ropes: Used for manual operation or as a backup for the wire ropes.
10. Cabin doors: Including door rollers, hinges, and locks.

It is important to consult the manufacturer or a professional technician to ensure you purchase the correct spare parts for your specific passenger hoist model.

Construction Hoist Mast,Construction Hoist Spare Parts,Construction Building Hoist,Construction Elevator,Safety Device

SHEN YANG BAOQUAN , https://www.bq-cranes.com