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PostWysłany: Nie 2:47, 08 Maj 2011    Temat postu: abercrombie outlet International manufacturers to

International manufacturers to step up development of new alternative refrigerant 134a


To enhance the platform moves up and down the four corners of the platform has 4 guide wheels, bent four columns along the main roll. Rotary table driven by a speed motor, bevel gear driven by a pair of rotary table, in the speed range variable speed. (2) To prevent the mortar spray jack parts, bent the upper part of the main unit is equipped with sand, mortar in the jet, the first cap in the socket of sand on the sand sand cap on the device by the electric hoist dipping. Mortar from the mixing system will be sand, cement and water, accurate measurement of backward people forced mixer, mixing mortar after the belt by the hopper after dumping people into the mortar storage hopper. Table 2 vertical roller shot spraying machine operating parameters electrical machinery (3) pre-injection devices by the paste mixing well cement paste, sent through the mud out of pressure spray pipe, beside the road in the spray pipe connected with the trachea so that both cement paste and compressed air jet to the surface of concrete pipe core. Paste roll radio head unit installed in the rack, and roll radio synchronous lifting device. Vertical roller shot spraying machine control room operating mainly by the electronic control system to complete, but the level of belt conveyors and paste injection device for the operation of the device in place. 4m diameter coffee production and the vertical roller shot spraying machine, can produce the smallest diameter is generally 4,2.2 m. Equipment operating parameters shown in Table 2.6 Conclusion and spray around the wire is prestressed concrete cylinder pipe (pCCP) two important processes, in GB/T19685-2005 national standards, and the spraying of wire around a very strict requirements. Spray around the wire and to ensure the quality, must be reliable, advanced production equipment, so the learning of foreign advanced technology, based on independent research and development of the differential winding machine, roll shot spraying machine. After several improvements increased use of mechanization has reached the present high degree of automation, easy operation, reliable, high performance and detection capabilities improve the efficiency of production equipment, production practice in the PCCP has played an important role in these devices, the PCCP product quality, played a role in ensuring quality of products has reached international advanced level. References: f1] GB/T19685-2005, prestressed concrete cylinder pipe fs】, the Standardization Administration of China, f2] K Yiwanqinke. Calculate fM】 handling equipment. China Railway Press, 1982. [3】 North China University of Fluid Power Transmission and Control Department,[link widoczny dla zalogowanych], Jinan Huaneng Pneumatic Components. Pneumatic components and system design 【M】. Machinery Industry Press, 1995, 【4] and of Electrical Engineering Co., Ltd. in Hangzhou, pipe equipment 【Z】,[link widoczny dla zalogowanych], 2003, Author: Zhou Guan Yang (1953 -), male, Haimen, Jiangsu people,[link widoczny dla zalogowanych], senior engineer; Sun Hailiang ( 1951 a), male,[link widoczny dla zalogowanych], Wuxi, Jiangsu, senior engineer, the first vice president. Received date :2006-11-10 international manufacturers to step up development of new alternative refrigerant 134a automotive air conditioning system on the new cooling Ji emissions requirements of the European Directive 2006/40, has been prohibited since 2011 GWP value of new motor vehicles more than 150 ( such as HFC-134a) of the fluorinated gases (F-gases); California passed legislation for the elimination of problems to enterprises HFC134a pressure. The one hand, these initiatives led to the refrigerant manufacturer Dupont and Honeywell is in full swing to develop new alternative refrigerants,[link widoczny dla zalogowanych], on the other hand also caused researchers co. Attention. Honeywell recently announced the Using H-fluid replacement HFC ~ 134a of the main advantages only slight modification to the original system. H-flmd system in the low heat load (the outdoor temperature is 15-35 ℃) under the cooling capacity and COP with HFC-134a systems, Honeywell also said that on the H-fluid further validation (in particular, toxicity) will determine its feasibility before the (expected end of 2007) implementation. Volume 73

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