In the medical field, a good hospital environment is crucial to the recovery and treatment of patients. As an important part of the hospital environment, the role of fresh air system can not be ignored. This paper will elaborate the importance of hospital environment and the role of fresh air system in it.
First, the importance of hospital environment
Hospital as a special public place, its environmental quality is directly related to the treatment effect and recovery speed of patients. A comfortable hospital environment can make patients feel care and warmth, helping to alleviate the psychological pressure brought by the disease. At the same time, a good hospital environment can also improve the work efficiency of medical staff and reduce the occurrence of medical accidents. Therefore, optimizing hospital environment is an important measure to improve the quality of medical service.

Second, the role of fresh air system in the hospital environment

A fresh air system is a facility capable of providing fresh air to a building, which improves indoor air quality by introducing fresh outdoor air and removing dirty indoor air. In the hospital environment, the role of fresh air system is particularly significant.

1. Improve air quality: The hospital is densely populated and prone to various odors and bacteria. The fresh air system can continuously introduce fresh air, effectively dilute the bacteria, viruses and harmful substances in the indoor air, and improve air quality.

2. Reduce the risk of cross infection: patients in the hospital have different conditions and are prone to cross infection. Fresh air systems can reduce the amount of suspended particulates and bacteria in the indoor air, thereby reducing the risk of cross-infection.

3. Create a comfortable medical environment: The fresh air system can provide a comfortable indoor climate environment for the hospital, so that patients and medical staff feel comfortable and relaxed, and help improve the treatment effect and recovery speed of patients.

4. Energy saving and environmental protection: While ensuring indoor air quality, the fresh air system can also effectively reduce energy consumption and achieve energy saving and environmental protection.

Third, the design and application of hospital fresh air system

The design of hospital fresh air system should be combined with the actual situation of the hospital, including the building structure, the number of patients, the layout of wards and other factors. In the design process, it is necessary to fully consider the ventilation efficiency, noise control, energy consumption and other requirements of the fresh air system.
In practical applications, hospital fresh air systems usually use full heat exchangers, high efficiency filters and other equipment to achieve efficient air exchange and filter harmful substances such as bacteria and viruses in the air. In addition, the hospital fresh air system should also be combined with the hospital air conditioning system, exhaust system, etc., to form a complete indoor environmental control system to ensure the comfort and health of the hospital environment.

Iv. Summary
The quality of hospital environment is directly related to the treatment effect and recovery speed of patients, and the fresh air system as an important part of the hospital environment, its role can not be ignored. A perfect fresh air system can provide the hospital with high-quality indoor air quality, reduce the risk of cross-infection, create a comfortable medical environment, and also achieve energy saving and environmental protection. Therefore, hospital should pay attention to the design and application of fresh air system in the process of construction and renovation, in order to improve the quality of medical service and patient satisfaction.
In the future, with the continuous progress of science and technology and the deepening of the concept of environmental protection, the hospitalfresh air system will be more intelligent, efficient and environmentally friendly, providing patients and medical staff with a more healthy and comfortable working and medical environment.