The Environmental Protection Agency formulated and announced the indoor air quality standards and the implementation rules of the management law in 2011, and subsequently announced the specific organizations that must meet and detailed maintenance and management plan documents. Further, in January 2016, hospitals and schools were extensively required to comply with relevant regulations and standards. If these contents are strictly followed and implemented, the air quality should be greatly improved. Taking the United States as an example, in addition to IAQ regulations (ASHRAE 62.1) for biotechnology and medical facilities, AIA, ASHRAE, ASHE, JOINT COMMISSION, and CDC all have more detailed and professional facility construction guidelines and engineering specifications. Whether it is an existing facility or a new project, if the owner, design unit and construction unit can further understand the air quality requirements of the biomedical field, especially the design and performance of the air conditioning and ventilation system, the quality and performance of the facility can be ensured. Run target. This article attempts to link related air quality issues with engineering design considerations, which can be used as a reference for air quality requirements in related engineering design.
Keyword: Air quality, biomedicine, air conditioning
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Modern people spend about 90% of their lives indoors, and the impact of indoor air quality on human health has become an important issue. Based on the demand for energy-saving air-conditioning, the air change rate of the ventilation system must be reduced, but this will also have a negative impact on indoor air quality. Therefore, how to balance energy-saving air-conditioning and indoor air quality is a topic worthy of research.
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How to build a clean room that can reduce energy consumption or other operating costs at a lower initial cost is the biggest challenge in today's clean room design and construction. This article discusses the relevant design conditions of clean room cleanroom design, including the relationship between the number of circulation air volumes, coverage, wind speed and FFU size selection, and compares the initial cost and operating energy consumption of FFU systems under different sizes.
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Compared with general traditional industrial clean rooms, the operating conditions of the biomedical industry are quite different. This article mainly introduces the general considerations of the clean room design and planning of the biomedical industry, in order to establish the basic concept of readers' needs for clean technology in this industry.
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1. Introduction 2. Design outline for local exhaust and ventilation in laboratory 2.1 Demand or use survey and planning (introduction to local exhaust equipment) 2.2 Survey and planning of plane location and space configuration 2.3 Exhaust emission control air volume, air duct planning and control equipment description 2.4 Waste gas pollution prevention and control countermeasures and equipment planning (washing tank, filter tank, washing tower) 2.5 Detailed design and engineering calculations (air volume, ducts, various equipment, etc.) after the preliminary planning is confirmed 3. Review of failure cases of chemical laboratory exhaust system and air conditioning 4. Introducing the laboratory intelligent monitor and soliciting laboratory air conditioning partners? AFA1000 / AFA5000
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Biomedical clean rooms are energy-intensive and highly complex air-conditioning systems, and they usually operate 24 hours a day throughout the year. Therefore, in order to achieve the environmental parameter targets required by the design, the energy consumption problem is more complicated. If we can have both, it will not consume too much energy. And economical and efficient operation will help save energy and the environment. However, only a very small number of research data and measurement studies on energy-saving systems and indoor environmental quality have been integrated. Therefore, this study will use field measurement data to evaluate the energy-saving feasibility of the air conditioning system in biomedical clean rooms, and conduct on-site measurements and numerical simulations for the vaccine cold storage room in biological clean rooms. The results showed that the energy-saving strategy based on the computer simulation improvement and measurement analysis results is feasible. In the vaccine cold room, the energy-saving strategy of using different air supply air volumes and changing the air supply temperature, through transient computer simulation of air flow distribution, can be achieved without affecting the vaccine. The feasibility of energy saving can also be achieved under the storage temperature specification of 0 ~ 4℃. This study can provide an important reference for the overall consideration of infection control, energy saving and environmental comfort in biomedical clean rooms.
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In this study, activated carbon was modified through a two-stage method. The first step is to use nitric acid to pretreat the surface of the activated carbon to contain oxygen functional groups to change its pore structure and chemical properties; secondly, add metal oxide nanoparticles to increase the surface area of the activated carbon to capture more of formaldehyde or degradation. In the experiment, silver nanoparticles and copper nanoparticles were selected to be coated and dispersed in activated carbon, which can more efficiently remove low-concentration formaldehyde. In the experiment, silver nanoparticles and copper nanoparticles were selected to be coated and dispersed in activated carbon, which can more efficiently remove low-concentration formaldehyde.
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Recalling the basic theory of water washing equipment for external air-conditioning tanks proposed by the author in 2000 [1], and collaborating with common washing equipment design concepts in the market from the microscopic point of the droplet, re-discussing the explanation, and finally proposing a new patented concept washing equipment .
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