This paper analyzes the causes of vibration for the vibration of the various components of the pump unit. From the pump hydraulic, mechanical structure design, to the pump installation, operation, maintenance and other aspects of several proposed measures to reduce pump vibration.

Summer high temperature and high humidity weather moisture condensation phenomenon is a common problem in the underground garage environment, especially in the rainy season in the south of China, the underground garage moisture condensation is particularly serious, not only for the use of the garage building structure performance and safety of the existence of a huge threat, but also long-term moisture will also affect the interior of the garage aesthetics, but also on the quality of the air inside the garage impact.

Refrigerant is an indispensable part of the air conditioning system, but its usage is often difficult to control precisely. When the refrigerant is insufficient, it may lead to a decline in the performance of the air-conditioning system, a deterioration in the cooling effect, or even malfunction. Therefore, it is particularly important to accurately determine the refrigerant charge.

On August 1, 2024, "Built Environment Health, Low Carbon and Resilience Frontier Science and Technology Forum and HVAC Magazine 2024 Annual Meeting" was successfully held in Xi'an, hosted by Asia-Pacific Institute of Construction Science and Technology Information Research (APCSTI) HVAC Magazine and co-sponsored by Northwest China Architecture Design and Research Institute (NWCDRI).

Multi-unit high-pressure protection is a safety measure in central air conditioning systems that is mainly used in air conditioning systems that use a refrigerant cycle for heat exchange, such as in multi-unit systems.