21
Feb
A 4500t/d cement clinker new dry process production line and dust removal and environmental protection collection. This project involves the high-temperature fan of the 4500t/d production line.
The design, manufacture, inspection, acceptance, transportation, and other related issues have been fully negotiated to meet the technical... read more
12
Oct
Today, we went to our factory to check the multi-stage centrifugal blower equipment. Multi-stage centrifugal blowers can be widely used in various smelting blast furnaces, coal washing plants, sewage treatment, and other occasions for conveying air, and can also convey other special gases. This... read more
25
Oct
Whenever the heating season arrives, most areas in the north will be accompanied by smog. Since the “13th Five-Year Plan”, the central and local governments have paid special attention to the control of environmental pollution, especially smog. The central government has demarcated the Beijing-Tianjin-Hebei air pollution transmission channel for it and directly subsidized the “2+26” cities from the central government to control smog pollution. So the north began the tide of coal-to-electricity and coal-to-clean energy.
Two or three years ago, most people didn’t know much about air-to-air heat pump products. If they were slightly impressed, they might be air-to-water heaters, but they didn’t know anything about other products. Such as air-energy floor heating and air-conditioning integrated machine, air-energy heat pump dryer, and so on. After the popularization of “coal-to-electricity” in the north, most people know what an air energy heat pump is. So what is the difference between the ultra-low temperature air energy heat pump used in the north and the ordinary air energy heat pump?
The operating conditions of the two are different.
We all know that the working principle of the air energy heat pump is to convert the heat in the air into the available high heat energy through the compressor, and then exchange it with the water system to provide hot water, heating, cooling, drying, and other purposes. The temperature environment in which the ordinary air source heat pump operates is preferably within minus 10 ℃. If it operates at minus 10 to 25 ℃, it may appear:
1. Compressor is prone to failure
The temperature of the exhaust gas rises rapidly, and the overheating of the working medium is too high. In the case of overheating of the working medium, the thermal conductivity of the working medium in the condenser decreases sharply, and at the same time, the temperature of the lubricating oil increases and the viscosity decreases, which affects the normal lubrication of the compressor.
2. The unit cannot defrost
In frequent rain and snow weather and low temperature, the defrosting ability of the unit is easily weakened. Because the air intake of the unit is too small, the density of the air that can be inhaled is reduced. With the accumulation of time, the thickness of the frost layer is getting higher and higher. Therefore, the unit will reduce the circulation of the refrigerant due to the decrease in the air conversion capacity, and the overall heating capacity will decrease.
The two technologies involved are different
Because of the difference in an ambient temperature between the north and the south, most air energy heat pump manufacturers are located in the southern Guangdong area. The air energy market in the south is extensive. The earliest product is also an air energy water heater. With the development of air energy, its technology is also becoming more and more mature. Heating has also gained a firm foothold in the north, which is also the fundamental reason for the breakthrough growth of coal-to-electricity air-energy heat pumps in the north in the past three years.
So what kind of technology does low-temperature air energy have to gain a firm foothold in the cold northern regions? There are three main points:
1. Ultra-low Temperature air Energy Operation Technology Air energy heat pump manufacturers have their own ultra-low temperature technology. Since the air energy heat pump host is generally installed outdoors, the phenomenon of frost will frequently occur in rainy and snowy weather. The ultra-low temperature air energy heat pump host can intelligently judge the defrosting needs, and intelligently judge whether to defrost according to the operating conditions of the unit (running time, exhaust temperature, etc.), combined with the ambient temperature and frost thickness. Defrost with frost and no defrost without frost, greatly extending the defrosting cycle, shortening the defrosting time by 20%, and ensuring the efficient operation of the unit.
2. Jet Enthalpy Technology
Because the heating efficiency of the air-energy heat pump in extremely cold weather will be greatly attenuated, resulting in an unsatisfactory heating effect. The ultra-low temperature air energy heat pump uses the jet enthalpy increase technology to create a second suction port on the scroll, and through the second suction circuit, the refrigerant flow is increased, and the circulation volume of the unit is increased during cooling. Compared with the general unit, the cooling capacity is increased by 10%, which greatly improves the refrigerant circulation system, makes full use of the refrigerant flow and utilization rate in the compressor, and improves the stability of the system operation and the heating efficiency.
3. Shell and Tube Heat Exchanger
Ordinary air can use a plate heat exchanger, which is easy to scale and block the flow passage. Low-temperature air can use copper tubes with internal thread and external fins. The water inside the tube and fluorine outside the tube. The heat exchange area is large and the heat exchange efficiency is high.
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14
Apr
Environmental protection policies have become increasingly important in recent years, and industries are now facing stricter regulations and higher standards for controlling air pollution. As a result, the demand for industrial dust collectors has been on the rise, as they play a vital role... read more
04
Jan
Judging from the transformation effect, after the fan system transformation, the fan’s output has been increased and the fan’s energy consumption has been reduced. The power saving rate of the fan system is about 10% to 28%, and some parts reach about 45%. Necessary upgrading and transformation can not only improve production efficiency but also be an essential choice for carbon reduction in the cement industry. In addition to the existing
Upgrading and transforming fans, Decent Machinery’s main fan products are also widely used in the cement industry and have been highly recognized by the owners.
Taking the single-stage high-speed centrifugal blower as an example, the device adopts IGV + DV double guide vane control. Under constant speed operation, the flow rate can be adjusted within the range of 40% to 100% of the design working conditions, and the maximum efficiency of the impeller can reach 95%, ensuring that the unit is Highly efficient operation. Replace single-stage high-speed centrifuge with single-point control.
Blowers, multistage centrifugal blowers, and Roots blowers can realize the efficient operation of the wind system without any adjustments to the wind system.
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10
Jan
At Decent Machinery, we understand that many customers have concerns about the quality and price of our products when they first start working with us. That’s why we are dedicated to ensuring that our customers get the best value for their money. Our products... read more
08
Feb
Sorry, this entry is only available in European Spanish.
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13
Dec
In recent years, everyone has a deep understanding of smog, and various businesses have also made great efforts to improve livability. Many markets have introduced fresh air systems for this purpose. “What is the fresh air system? Can the fresh air system really keep... read more
09
Apr
文:
The DM-100 fog cannon has a horizontal range of 100 meters and its maximum coverage area can reach 20,000 square meters. This feature makes it perform well in agricultural irrigation, urban cooling, and dust reduction at construction sites.
Whether it is the horizontal rotation angle,... read more
23
Mar
In today’s world, environmental protection and governance have become the focus of attention of all countries. In response to this global issue, Zibo Decent Machinery Company Limited continues to develop and optimize multi-functional fog cannon trucks, contributing to urban governance and environmental protection.
The ZIBO... read more