The laboratory air supply and exhaust system is one of the largest and most influential systems in the entire laboratory design and construction process. Whether the air supply and exhaust system is perfect or not has a direct impact on the laboratory environment, the health of the experimenters, and the operation and maintenance of the experimental equipment. A laboratory with a complete ventilation system should be a workplace with a harmonious, safe and healthy environment. Laboratory noise, the number of air changes in the room, the pressure difference, and the residual toxic gas in the fume hood are all worthwhile. In addition, the sample room and reagent room should also be equipped with ventilation and exhaust equipment to prevent the odor caused by the sample from affecting the environment; a modern The laboratory should design a fresh air system; the fresh air diffuser in front of the fume hood should be designed with adjustable direction activity room shutters, and the external cold and hot air in winter and summer should directly blow the operator.
Fire Fighting System
The laboratory is a special environment, and the requirements for fire protection are much higher than that of ordinary office buildings. Laboratory design should be based on the specific conditions of the laboratory (equipment investment and process characteristics, experimental process requirements, types of stored samples and reagents, characteristics of laboratory buildings, etc.), using different fire protection measures to ensure laboratory fire safety. For example, for precision instrument rooms, sterile rooms, exchange rooms, and uninterruptible power supply rooms, automatic sprinklers should not be used for fire protection, but gas fire extinguishing devices should be used, and automatic sprinklers can damage equipment or destroy the clean environment.
The pipes of the drainage system should be resistant to acid and alkali corrosion and the melting of materials by organic reagents. PPR or other materials should be used instead of ordinary PVC pipes. At the same time, it should be based on the nature of the sewage, the flow rate, the discharge law and the combined drainage and drainage conditions set a strategy. Due to the complexity of the sewer pipes in large laboratories, necessary measures should be taken to avoid blockage and leakage of the pipes, such as developing good water habits, placing filters, setting traps, and connecting elbows at a 45° angle. In order to avoid secondary pollution, the centralized water supply system can use induction faucets. The disadvantage is that it is easy to break. For aesthetics, the water heater can be a built-in instant electric water heater.
The laboratory's switch system is designed according to the specific requirements of experimental instruments and equipment, and is designed by professional designers through comprehensive factors, which is very different from ordinary buildings. Because the requirements of laboratory equipment for circuits are more complicated, and in fact, it is not what many people think, as long as the requirements of maximum voltage and maximum power are met. In fact, many instruments and equipment have special requirements for circuits (such as electrostatic grounding, power-off protection, equipotential bonding, etc.). For the design of the power distribution system, not only the existing instrument and equipment conditions must be considered, but also the development plan of the laboratory for several years, and the replacement of the power distribution system and future circuit maintenance should be fully considered. To guarantee, the uninterruptible power supply or dual-line design should also be considered. The capacity of the uninterruptible power supply should meet actual needs and ensure a certain expandable range to extend future development needs.
Weak current system
The weak current system of the laboratory mainly includes telephone, monitoring, access control, network, etc. The weak current system has a feature that cannot be changed beforehand, so it cannot be changed as needed like a strong current line. For example, the network interface should be parallel to the wall plug, and the height should be just higher than the test bench, so that it is convenient for future use. The instrument room should allocate enough network interfaces, instead of using ground plug-in, the longest possible thread should be used to facilitate the connection of the instrument table to the table network interface during installation. If the corridor is very long, you can use an extended telephone line to make it easier to answer the phone at work. Because of the better sound insulation effect in the sterile room and outside, the intercom should be regular to facilitate communication. The main entrance of the room or other places that need to be controlled.
Air Conditioning System
The air-conditioning system dually controls the temperature and humidity of the laboratory. At the same time, it should also be coordinated with the laboratory ventilation system to effectively ensure the temperature, humidity and room pressure difference in the laboratory, so that personnel and precision instruments have a good working environment. If the entire building uses central air-conditioning, it must be able to carry out regional and branch modular management, and the detection performance of the instrument will be affected due to the inability to use the air-conditioning normally during overtime. The layout of the central air-conditioning pipeline should be combined with the laboratory under extreme weather conditions, and should be able to ensure that the sample room, gas cylinder room, ultra-low temperature refrigerator room, precision instrument room, uninterruptible power supply room and other areas with high temperature requirements are kept constant for 24 hours Temperature adjustment.
The choice of laboratory furniture should first consider that it can fully meet the needs of the work, mainly involving the tabletop material, cabinet structure and material, color matching and other elements. For example, the pretreatment room should use acid and alkali-resistant ceramic board countertops, and the instrument room should use physical and chemical board countertops. The structure of the cabinet is mainly divided into steel-wood, aluminum-wood, and all-steel. The support of the test bench can be divided into C-shaped and back-shaped, which should be determined according to the needs of each unit. The layout, type, and quantity of counters in each room should also be fully considered. Side counters, central counters, high cabinets, wall cabinets, etc. should be properly matched to avoid inconvenience in future work. , The inconvenience of future use