The purpose and characteristics of the makeshift hospital:

"Fangcang type" is a temporary emergency medical treatment place. It refers to the use of existing buildings in the shortest time to solve the problem of centralized treatment of a large number of mild patients during major epidemics and other public health safety events and major natural disasters. The renovated temporary treatment site consists of a clean area and a contaminated area.

"Fangcang-style" temporary emergency medical treatment sites should have the characteristics of large space, large capacity, and temporary nature. The design and reconstruction should follow the principles of safety, reliability, quick conversion, and easy recovery. The existing buildings to be renovated should have convenient transportation connections with surrounding hospitals, and priority should be given to large-space buildings such as gymnasiums and exhibition halls to renovate "square cabin" temporary emergency medical treatment sites.

Regional requirements for makeshift hospitals:

The building layout should strictly follow the principle of "doctor-patient zoning". If possible, it should meet the "three zones, two buffers and two channels" (three zones of contaminated area, potentially contaminated area, clean area, contaminated area and potential contaminated area, potential contaminated area and According to the requirements of the buffer zone between the clean areas, the medical staff channel, and the patient channel), the entrances and exits and flow lines should be organized according to the separation of doctors and patients, and the separation of clean and dirty, and appropriate space for patient activities should be reserved.

Architectural characteristics of the makeshift hospital:

In terms of architectural design, in principle, the transformation of "fangcang-style" temporary emergency medical treatment sites only involves the transformation of the internal functions of the building and the transformation of site facilities. The main contents include internal partitions of the building, internal facilities and equipment of the building, outdoor municipal facilities, etc. From the time the existing building is renovated to the end of its current use, it can only be used as a "square cabin" temporary emergency medical treatment site and cannot be used for other purposes.

Most makeshift hospitals still use the original air conditioning units for air supply. The new exhaust air volume and filtering devices of the original air conditioning system are needed for comfortable sports venues or exhibition halls. Now being transformed into a makeshift hospital, it needs to meet the negative pressure control of the infectious disease room and achieve the dilution of indoor air. The air supply does not require new filtering equipment, but a three-level filtration must be installed in the exhaust air measurement.

Air-conditioning requirements for mobile cabin hospitals:

1. Meet the temperature and humidity needs of patients with mild symptoms and medical staff;

2. Meet the needs of infectious disease wards;

3. The internal structure of the venue should not be changed, and additional equipment should be placed outdoors as much as possible;

4. The central air conditioning system should turn on the air purification and disinfection device.

Ventilation system design requirements:

In addition to the need to distinguish between contaminated areas and clean areas in space design, issues such as air circulation, air supply and exhaust in the shelters are top priorities for epidemic prevention and control. The state has also made specific provisions on ventilation systems in the "Relevant Technical Requirements for the Design and Reconstruction of Fangcang Hospitals":

1. Mechanical ventilation should be the main method for semi-polluted areas and polluted areas.

2. When using independent rooms such as dormitories and hotels to set up isolation wards, the number of air changes in each room should be no less than 6 times/h.

3. When using large spaces such as convention and exhibition centers, gymnasiums, and factories to set up isolation wards, the ventilation volume per person should be no less than 150m3/h (40 liters/second).

4. The indoor air exhaust outlet should be set no higher than 2m from the ground.

5. Outdoor exhaust air should be discharged at high altitude, with a horizontal distance of ≮20m or a vertical distance of ≮6m from any air inlet.

Quality and features of Decent air conditioners:

1. The indoor and outdoor units are integrated on the roof, eliminating the need for copper pipe connection and testing, and can be serviced upon arrival, which is faster;

2. The cooling capacity and air volume are higher, making it more suitable for wider places and more practical;

3.Self-developed software and control system are more stable.