News Center_News Center_Zhejiang Louda Refrigeration Technology Co., Ltd.

Win the championship again in June, Gree frequency conversion boss is unsurpassed

The latest data released by the industry online of a third-party market research agency shows that in June, the production and sales of inverter air conditioners changed from the previous five months of continuous growth and showed a slight decline; however, Gree, the first brand of air conditioners, continued to grow, and led the inverter air conditioner by absolute advantage. In the market, the gap between the market share and the second place continues to widen, and the position of inverter leader is insurmountable. Industry sales decline slightly, Gree still grows Industry online data shows that in June 2012, the total sales of inverter air conditioners was 329.59 units, a year-on-year decrease of 9%. Among them, the domestic sales of 2.407 million units, a year-on-year decline of 16%; exports of 1.0552 million units, a year-on-year increase of 10.4%. In the context of the overall downturn in the industry and the sharp decline in sales of most brands of inverters, Gree inverter air conditioners still maintained year-on-year growth, and their proportion further increased. Data show that in June 2012, Gree inverter air conditioners shipped 1.18 million units, a slight increase of 4.61% year-on-year, and the market share was 35.80%, an increase of 1.22% from the previous month. In the cold year of June to June, Gree shipped 11.464 million units , A year-on-year increase of 48.36%, market share reached 40.07%, ranking firmly in the single month and 2012 cold year inverter air conditioning champion position. Industry online analysis believes that in the current situation of sluggish international demand, the export of inverter air conditioners increased in June because the current peak season in Japan, most inverter air conditioners from Japanese factories are sold back to Japan, including Europe. High-end machines are the mainstay; in June, the production and sales of inverter air conditioners declined slightly, mainly due to the implementation of the energy-saving and benefiting people's policy. 36.1%. In the environment where the inverter air conditioner as a whole is down, Gree is still growing independently and against the market. Experts believe that this is due to the power of technology and the resulting brand benefits. Stronger Hengqiang, Gree stands out In recent years, through the improvement of inverter air conditioner technology, the comfortable and energy-saving features of inverter air conditioners have been increasingly recognized by the market. Frequency conversion has become the key word for consumers to buy air conditioners. And how can we win the hearts of consumers? Product advantages based on technology are the key. It is understood that the 1 Hz frequency conversion technology independently developed by Gree is the world's most advanced frequency conversion technology. The 1 Hz frequency conversion air conditioner applying this technology saves about 440 degrees per year compared to traditional air conditioners and saves 264 yuan in electricity costs. Calculated in yuan / degree), if all domestic air conditioners are 1-Hz inverter air conditioners, based on the domestic sales of 61,618,500 units in the cold year of 2011, it can save about 27.11 billion kWh of electricity each year, which is equivalent to reducing carbon dioxide emissions by 27.04 million tons. On February 14, 2012, the National Science and Technology Progress Award was announced. Gree's 1 Hz inverter technology won the National Science and Technology Progress Award and became the only professional air-conditioning company that won the award. Technical innovation is manifested in the trend of air-conditioning brands. With the "downsizing" of a brand in the air-conditioning industry, the gap between its market share and Gree, the first brand of air-conditioning, has widened. The situation of the "two hegemonies" in the domestic market has gradually drifted away. The trend is becoming more prominent. According to industry online statistics, Gree's inverter air conditioners shipped 1.18 million units in June, a year-on-year increase of 4.16%. In the cold year of 2012, June, Gree shipped 11.464 million units, a year-on-year increase of 48.36%. The growth rate is much higher than the industry as a whole. Measured by market share, Gree was 35.8% in June, about twice the second place. The cumulative market share in the cold year of 2012 exceeded 40%, which is approximately equal to the sum of the industry's second to fifth place. Industry experts said that with the advent of high-temperature weather in July and the gradual release of the efficiency of subsidy policies, the growth rate of Gree inverter air conditioners accelerated in the next few months, and the market share increased further.

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Technical article on safe descaling of chiller

 Time : 2012-10--10  Click : 0

Basic information of chiller safety descaler LOUDA Chiller Safety Descaler: [Scope of application] During the operation of the chiller's circulating water system, the evaporation and concentration of salts continue to increase, and the salt will precipitate out of scale when it exceeds the saturation value. As a result, the operating capacity of the unit is reduced. This product is a special cleaning agent for the chiller circulating water system, which is used to clean the scale, dust, gelatinous substances and microbial slime generated during the heat exchange process of the chiller circulating water system. The chiller safety cleaning agent is based on the type and characteristics of scaling in the circulating water system; a special product developed for chiller cleaning can quickly remove scales, dust, gelatinous substances and microbial slime, etc. All materials are safe and non-corrosive. [Performance characteristics] 特点 Quickly dissolves dirt such as scale, dust, gelatinous matter and microbial slime, without scaling and blocking the pipeline. Efficient and reliable protection of equipment metal, safe for steel, copper, stainless steel, aluminum, galvanized layer and rubber. Quickly restore the working performance of the system after washing, significantly improve the cooling efficiency, and greatly reduce power consumption and operating costs. This product is non-toxic and harmless, safe and convenient cleaning operation, and does not affect the environment and the health of the operator. 【Acid cleaning】 This product is a new product specially developed for the cleaning of various water systems in operation. It is suitable for all types of dirt, scale, dust, gelatinous substances and microbial sludge, etc. Materials are safe and non-corrosive. Dose calculation method: When the cleaning agent is used for cleaning the circulating water system of the chiller, the dosage of the cleaning agent can be calculated according to the area of the heat exchanger of the condenser and the thickness of the scale. g = 1.97 * f * h * a g-dosage (ton) f-heat exchanger heating area (m2) h = scale thickness (mm) a-calcium carbonate density 2.7t / m3 According to the proportion of 3-4% of the weight of the aqueous solution, the medicine is added to the dispensing box with a water temperature of 40-60 ° C to dissolve, and then the cycle cleaning is performed. Dosage: Calculated according to the water volume of the system, the usage amount is 30 ~ 50kg / 1000kg, that is, 3 ~ 5%. 【Instructions】 Chiller cooling circulation system: The system is filled with fresh water, and the cooling water circulation pump is turned on, so that the water system is in a running state. Put the cleaning agent into the dispensing cabinet at 30-60 ° C, stir and dissolve, and inject it into the circulation system. After 4-6 hours of normal cycle cleaning, the cleaning solution is replaced and the antiseptic treatment is performed with a passivating agent. Stop and drain the waste liquid, rinse with water for 2-3 times. If the liquid cannot be shut down during normal operation, the system waste liquid can be replaced by discharging water while discharging. If it is cleaned separately, after dissolving the medicament, the external circulation pump connects the condenser into a circulation loop (low in and high out), and the medicament is injected into the condenser and rinsed for 6-8 hours. Then rinse with water for 2-3 times. [Packing Specifications] 25kg / bag Valid for two years.

LOUDA chiller selection

 Time : 2012-12--02  Click : 0

Selection of LOUDA chiller There are many factories or users who need a chiller to cool the circulating water and circulating oil used by the machine. When purchasing an industrial chiller, they often do not know what type of chiller is used to achieve the cooling effect they require, or I don't know what kind of machine is more suitable for my production workshop. First of all, we need to figure out which types of water chiller are divided into: general manufacturers will produce both water-cooled and air-cooled. The air-cooled chiller contains an insulated water tank and a water pump in its body, and there is no need to add a cooling water tower to dissipate heat. It is very convenient to install and move. However, it has higher requirements for the working environment. First, because it is cooled by hot air circulation Therefore, if the ventilation effect of the installation workshop is not good, it will directly affect the cooling effect of the chiller. In addition, if you want to place the chiller in a dust-free workshop with humidity requirements, then I advise you to modify the water cooling Because the air-cooled chiller will spray water vapor on the top of the machine to dissipate heat. Water-cooled chiller can be divided into open type, sealed type (some are called box type) and screw type. First of all, it must be stated that water-cooled chillers must be additionally equipped with cooling water towers and pumps to extract hot water for heat dissipation. In order to achieve a good cooling effect. The open-type chiller also requires an additional water tank, which is not necessary for the sealed type, because it has a built-in water tank. The open type is generally installed somewhere outside the workshop. He is convenient for maintenance, but because it is not beautiful, so A sealed water-cooled chiller has been produced, and because it is a box structure, it is more popular. However, if you have a very large demand for cooling capacity, you must choose a screw chiller. At this time, we generally call it a chiller. LOUDA industrial chiller selection: 1. At present, all enterprises are based on the frozen water flow based on the industrial chiller temperature difference of 5 degrees (20 degrees down 15 degrees). The fake investment takes an LDSW-06 industrial chiller as an example; the standard cooling capacity is 14448 kcal; the standard flow rate is 3.6m3 / h. If your equipment only needs 3.2m3 / h, when you choose the machine, you can't just look at the flow of the chiller, but also the temperature and temperature difference you need. If the temperature you try is reduced from 20 degrees to 10 degrees , Your actual temperature difference is greater than 2 times the standard temperature difference, then when you choose the machine, you must pay attention to choose an industrial chiller that is more than 1 times the standard. Of course, the selection of some non-standard machines is also very different; for example, low-temperature type (-10 ° C to -50 ° C) chiller. His cooling capacity is much smaller. I wo n’t list them one by one here. You can call us for advice when you need it. 2. When choosing an industrial chiller, it depends on whether you are cooling directly or indirectly. Direct cooling is directly pumping chilled water into the equipment or products you need to cool it and then return it to the chiller. The effect of direct cooling is obviously better. Indirect cooling is equivalent to putting water in a basin, placing a small basin on top of the basin, and placing the product to be cooled in the small basin. The effect of indirect cooling is relatively poor. Therefore, when you select a model, you must consider this issue. The principle is that we can directly cool. We must not use indirect cooling. 3, the choice of air-cooled chiller and water-cooled chiller: first understand the two types of machines: The air-cooled chiller mainly dissipates heat through the cooling fan that comes with the chiller. Disadvantages: A. The cooling capacity is relatively low; B. The noise is a bit higher; C. The price is a bit more expensive; D. The working environment requires higher and the ventilation effect of the workshop is not good, which will directly affect the cooling effect of the chiller; advantages : A, simple installation; B, easy to move; C, integrated molding, no additional auxiliary equipment is required. Water-cooled chiller mainly dissipates heat (takes away heat) through externally circulating cooling water (cooling tower). Disadvantages: A, troublesome installation; B, inconvenient to move; advantages: A, relatively large cooling capacity; B, less noise; C, lower price; Therefore, if there is a cooling tower customer in the selection, try to choose a water-cooled chiller LOUDA chiller selection calculation: First, calculate the calorific value by the temperature difference between the inlet and outlet of the cooling water (oil) Q = SH × De × F × DT / 60 Q: Calor

Chiller wiring standards

 Time : 2012-12--02  Click : 0

LOUDA chiller wiring current standard Estimate tips: Multiply it by two five and nine, and go up one minus. Thirty-five times three-fifth, both groups are reduced by five. Conditions are subject to change and discount, and copper at high temperature of 10% is upgraded. The number of pipes through the pipe is two-four-four, eighty-six percent full load. Explanation: (1) In this section, the current carrying capacity (safety current) of various insulated wires (rubber and plastic insulated wires) is not directly pointed out, but is expressed by "section multiplied by a certain multiple" and obtained through mental arithmetic. It can be seen from Table 53 that the multiple decreases as the cross section increases. "Multiply by 2.5 and multiply by nine, and go up by one." It is said that the aluminum core insulated wires with various cross sections of 2.5 mm 'and below have a current carrying capacity of about 9 times the number of cross sections. For example, a 2.5mm 'wire has a current carrying capacity of 2.5 × 9 = 22.5 (A). The multiple relationship between the current carrying capacity and the cross section of the conductor from 4mm 'and above is arranged upward along the line number, and the multiple is decreased by 1, namely 4 × 8, 6 × 7, 10 × 6, 16 × 5, 25 × 4. "Thirty-five times three point five, both points are reduced by five points," said 35mm "The current carrying capacity of the wire is 3.5 times the number of sections, that is, 35 × 3.5 = 122.5 (A). From For conductors of 50mm 'and above, the multiple relationship between the current carrying capacity and the number of sections becomes two sets of two wire numbers, and the multiple is reduced by 0.5 in sequence. That is, the current carrying capacity of 50 and 70mm' conductors is 3 Times; the current carrying capacity of the 95, 120mm "wire is 2.5 times its cross-sectional area, and so on. "Conditions are subject to change and discounts, and high-temperature 10% copper upgrades." The above formula is determined by the aluminum core insulated wire, exposed to the environment temperature of 25 ℃. If the aluminum core insulated wire is applied in an area where the ambient temperature is higher than 25 ℃ for a long time, the current carrying capacity of the conductor can be calculated according to the above-mentioned calculation method, and then a 10% discount can be used; Its ampacity is slightly larger than that of the aluminum wire of the same specification. According to the above formula, the ampacity of the aluminum wire is increased by one line number. For example, the current carrying capacity of 16mm ’copper wire can be calculated as 25mm2 aluminum wire. If it is a copper core wire: 1.5 squares can carry a maximum of 12A-13.5A 2.5 squares can carry a maximum of 16A-18A 4 squares can carry a maximum of 32A-36A 6 square up to 48A-54A If it is an aluminum core wire: 1.5 squares can carry 6A-6.75A 2.5 squares can carry a maximum of 8A-9A 4 square up to 16A-18A 6 square up to 24A-27A These values are not accurate, the specific values are related to temperature! National standard allowed long-term current: 4 square is 25-32A 6 square is 32-40A The ampacity under the working temperature of 30 ℃ and long-term continuous 90% load is as follows: 1.5 mm2-18A 2.5 mm2-26A 4 mm2-26A 6 mm2-47A 10 mm2-66A 16 mm2-92A 25 mm2-120A 35 mm2-150A Power P = voltage U × current I = 220 volts × 18 amps = 3960 watts Wire load current value (part) as specified in GB4706.1-1992 / 1998 Copper core wire: Copper core wire cross-section area: Allowable long-term current: 2.5 mm2 (16A ～ 25A) .. 4 square millimeters (25A ～ 32A) .. 6 square millimeters (32A ～ 40A) Aluminum core wire: Aluminum core wire cross-section area: Allow long-term current: 2.5 square millimeters (13A ～ 20A) 4mm2 (20A ～ 25A): 6mm2 (25A ～ 32A) ///for example://// 1. Each computer consumes about 200 ~ 300W (about 1 ~ 1.5A), then 10 computers need a 2.5 mm2 copper core wire to supply power, otherwise a fire may occur. 2. The power consumption of three large air conditioners is about 3000W (about 14A), so a single air conditioner needs a separate 2.5 mm2 copper core wire for power supply. 3. The current housing wiring is generally 4 square millimeters of copper wire. Therefore, household appliances that are turned on at the same time must not exceed 25A (that is, 5500 watts). Some people replace the electrical wires in the house with 6 square millimeters of copper wire. Because the wires entering the meter are 4 square millimeters. 4. Early housing (15 years ago) The incoming line is generally 2.5 square millimeters of aluminum wire. Therefore, the household appliances opened at the same time must not exceed 13A (that is, 2800 watts). 5. Household appliances with large power consumption are: air conditioner 5A (1.2HP), electric water heater 10A, microwave oven 4A, rice cooker 4A, dishwasher 8A, washing machine 10A with drying function, electric water heater

Application areas of chiller

 Time : 2012-12--02  Click : 0

The use of chiller in many fields Chillers may be used in many areas. The main application areas are: 1. The chiller can be used in supporting vacuum equipment. This type of chiller also meets the needs of high-quality vacuum equipment, such as molecular pumps, small vacuum coating machines, etc. 2. The chiller is used in supporting medical laser equipment. The unique water quality treatment characteristics of this type of chiller make it an ideal choice for supporting medical laser equipment. 3. This series of chiller is also widely used in atomic absorption spectrometer, fermentation device, reaction kettle, electrophoresis instrument, etc. 4. The chiller can use the supporting experimental condensing equipment. For example, the rotary evaporator, still, and condensing tube have the characteristics of controllable temperature, stable temperature, and high condensation efficiency, which can effectively improve the recovery rate. At the same time, its fluid purification function can prevent the circulation pipelines from being blocked and growing microorganisms. The chiller is used in supporting semiconductor laser equipment. Semiconductor laser equipment has high requirements on water quality due to its special structure. 5. In the process of using the chiller, be sure to pay attention to: the liquid medium should be added to the tank before use, and the working power should be determined according to the model of the machine. 6, the power of the power should be greater than or equal to the total power of the instrument, the power must be well grounded. The chiller should be placed in a dry and ventilated place with a distance of not less than 500mm around For more requirements, please call: Lauda Industrial Technology Department: 0571-88587986 Mr. Ma

Causes and solutions of chiller failure and precautions for operation

 Time : 2019-11--05  Click : 0

Causes and solutions of chiller failure and precautions for operation