In recent years, the heating system has undergone a very significant change and development in terms of system mode, system equipment and materials. At the same time, we find that the operating modes of today's heating systems are also evolving. Among them, it is particularly obvious that the average temperature difference between the actual operation state and the temperature difference between the supply and return water in the heating system is getting lower, which is far from the standard working condition in current Chinese technical specifications. 64.5 degrees Celsius and 25 degrees Celsius temperature difference between supply and return of the standard conditions, it seems to have been shelved. When we investigated the heat exchange stations in Beijing, Qingdao and Dalian, we found that the water supply temperature was rarely higher than 80 degrees Celsius even in the coldest period, and the temperature of the water supply for most of the heating season was between 60 degrees Celsius and 70 degrees Celsius Between the return temperature of 50 degrees Celsius to 60 degrees Celsius, the status quo I believe that the rise in energy prices and profit-driven, so that operators in the closest load demand to run the state, in order to reduce operating costs; heating technology and equipment Such as frequency conversion technology, temperature control technology and intelligent control system; promotion of building energy efficiency, making the heat load per unit area was significantly reduced, it is estimated that by 2014 China's major cities to achieve energy-saving targets or Close to the European standard; pipe network insulation performance improvement, reduce the temperature drop, radiator heating; widely used split-type system, changing the supply and return water temperature difference between the requirements of the original centralized system of single-tube temperature difference high. Low temperature and low temperature difference heating system, especially in the radiator heating system has the advantage of comfort and safety as well as significantly improve health indicators, the water temperature makes the negative oxygen ions in the air to greatly reduce the damage, reduce the sense of dry heat, while not So that the dust attached to the surface of the radiator produces a scorching odor and greatly reduces the personal injury caused by the accidental leakage of children's touch or indoor systems. Conducive to the diversification of heat utilization, such as the use of low temperature waste heat and solar energy in heating applications, especially solar energy applications. This is because the development of solar energy technology has greatly enhanced the utilization efficiency of solar energy in winter. Heating system in addition to radiator heating, floor radiant heating, water circulation household air conditioning has also been widely used in recent years, the water temperature of these two systems at 40 degrees Celsius to 60 degrees Celsius, if the use of low-temperature hot water radiator heating will make the same area The heating temperature in different heating systems is closer to each other, which can reduce operators' investment in heat exchange equipment and reduce operating costs. Reducing the water supply temperature will increase the efficiency of the heat exchanger. In the same area, the heat exchanger can be reduced Specifications, saving investment and room area. At the same time, due to lower water temperature will greatly reduce the heating pipe network and system heat loss. Low temperature and low temperature difference radiator heating system also has some shortcomings, mainly in two aspects: First, the end device corresponding increase in the radiator configuration, in recent years, the widespread use of new radiators such as Germany Ruitaige ecological radiator, To a certain extent, make up for this shortcoming, which is mainly manifested in the light of the new type of heat sink, while the appearance of decoration will allow users to use outfitting, which is more conducive to heat dissipation. Of course, the radiator manufacturers should be in the thermal performance of the radiator to comply with this trend of development, so that the radiator layout in the product, more attention and research of low-temperature heat sink performance to meet the market demand. Another disadvantage is that the increase of circulation flow will correspondingly increase the cycle energy consumption. However, with the implementation of household metering and the widespread application of radiator thermostatic valves and new type of pipe and the popularization of pump frequency conversion technology, the energy consumption of circulation will increase Absolute amount will not be great. Based on the above superficial analysis, the author suggests to adjust the technical standards and design codes related to the current heating system in China, especially for the adjustment of standard operating conditions, to a certain extent, refer to the standard of European EN442 and correspondingly increase the standard flow rate of hydraulic calculation , Make it closer to the reality, more reasonable, at the same time more in line with the development trend of heat source technology.
Ecohydraulic scrap shears cut scrap metal into smaller pieces and help to separate different materials types, earning you more money from your scrap metals. Metal Shear, Scrap Shear, Alligator Shear, Metal Cutting Machine, Metal Shearing Machine Jiangyin Metallurgy Hydraulic Machinery Factory , https://www.eco-balers.com
Alligator shears are ideal for waste materials recycling processing industries, scrap metal (iron, steel, steel pipe, etc.) cold shearing to different section forms of middle and small steel factories.
With operator safety uppermost in mind, our shears are equipped with blade guards and foot operated switches.