Since the development of laboratory furniture, there is no industry standard, and generally refer to or quote the standards of foreign and similar products. Many ministries and commissions in China (Ministry of Chemical Industry, Ministry of Construction, etc.) have issued different versions of the standards in different periods.
Laboratory equipment and laboratory furniture. Experimental equipment generally refers to laboratory instruments and decoration purification equipment, etc. Laboratory furniture can be divided into table and cabinet types. From the functional point of view, the table can be divided into: central table, side table, instrument table, sky platform, high temperature table, and from the material structure can be divided into: steel wood structure, all wood structure, all steel structure, all wood Structure, etc .; functionally speaking, the table can be divided into: fume hood, drug cabinet, medicine cabinet, utensil cabinet, reagent cabinet, locker, biological safety cabinet, etc.
The supporting equipment for these laboratories is generally selected based on economic conditions, usage requirements, and geographic environment. Laboratory instruments are colloquially referred to as laboratory-specific furniture. With the deepening of reform and opening up and economic development, the needs of national inspection agencies and the development of enterprises' awareness of R & D have developed.
Its main features are: the main material must be resistant to acid and alkali, high temperature, the table has certain load-bearing requirements, the hardware also has the characteristics of corrosion resistance and durability, and the hardware accessories such as faucets are different from those for general civilian use. In the early days, the whole wood structure was the mainstay. Later, aluminum wood structure, steel wood structure, all steel structure, all PP material and so on appeared. At present, the relatively high market awareness is mainly steel-wood structure and all-steel structure.
The part of the laboratory equipment that involves science and technology content is usually the ventilation in the special occasion of the laboratory.
With the development of economy, there are more and more laboratory fume hoods. Due to the large number of fume hoods, which are poisonous, harmful, and odorous, their energy consumption is 5-8 times that of ordinary office places, so their ventilation schemes need to be more strict and reasonable. To put it simply, there are currently two solutions of frequency conversion control system (PLC) and variable air volume control system (VAV).
The frequency conversion control system (PLC) can play the role of discharging toxic and harmful gases and saving energy to a certain extent, but it cannot be strictly and effectively controlled when there are many fume hoods and complex conditions involving synthesis or laboratory room temperature control requirements The surface wind speed and ventilation volume are actually difficult to achieve a completely effective effect.
Variable air volume control system (VAV) is an important form of air conditioning system, it has great potential for energy saving, but also has a complex control system and complex equipment. The application of this system in the laboratory is mainly to adopt some technical means to effectively control the surface wind speed of the fume hood.
The fume hood surface wind speed index of about 0.5m / s is the most basic element to ensure effective emissions. In other words, only by ensuring a relatively constant surface wind speed can the safety and environmental comfort of the laboratory be ensured and achieved.
Another advantage of the variable air volume control system (VAV) is that it can save 30% -50% of energy, and the effect is more obvious in places with large and long-term ventilation requirements.
Large Building Block Toys(Building Blocks Toys):
This is perfect gift for your children physical benefit: improve eye-hand coordination Social benefit;encourage interaction and imagination Creative benefit;enhance innovation ability Intellectual benefit;children gain creative stimulation by making their own designs with blocks.
HaiPengDa Plastic Toys Co., Ltd. was established on 1983, we are in Chenghai, Shantou City. With the exporting experience in past years,we have developed into one of the most professional exporters in the field of toys in Mainland China. Welcome your visit to Shantou and to our showrooms! We also can provide ODM & OEM services.
Building Blocks,Kids Building Blocks,Toy Building Blocks,Plastic Building Blocks,Building Blocks Toys,Large Building Block Toys
HAIPENGDA Plastic Toys Co., Ltd. , http://www.hpdtoys.com