20
May
Mining operations often require specialized equipment to ensure safe and efficient ventilation. Two commonly used types of fans in mining are the mining explosion-proof pneumatic fan and the counter-rotating mine fan. While both serve the purpose of ventilating underground mines, they differ in several... read more
17
Nov
For the air conditioning box fan, clean air conditioning and non-clean air conditioning is some difference, mainly in the performance curve of the fan.
Usually for comfort air conditioning, the performance curve of the fan is expected to be flat, so that the fan can... read more
10
Oct
As a leading company in centrifugal fans, ZIBO DECENT is proud to announce that we have recently welcomed important customers from Russia. This customer’s visit aims to understand our company’s professional strength in centrifugal fans, multi-stage centrifugal blowers, and our reputation in the international... read more
13
Mar
Designed to provide efficient and reliable air conditioning and heating solutions, our product offers superior performance and versatility.
Equipped with advanced features, this unit is an ideal solution for commercial and residential buildings. The 4 pipe system allows for simultaneous cooling and heating, providing a... 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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27
Apr
When it comes to installing an underground ventilation fan, there are several important considerations to keep in mind. The proper installation of a ventilation fan is crucial for maintaining good air quality and preventing hazardous conditions in underground spaces.
Choose the right size of the... read more
24
Nov
Decent Machinery is honored to be invited by customers to participate in the 68th ANNUAL NATIONAL MINE SAFETY AND ENVIRONMENT CONFERENCE.
The products exhibited by Decent this time are mine ventilation and dust removal equipment. Among them, mine ventilation fans with the most complete production... read more
30
Mar
Industrial dust collectors are essential equipment in manufacturing and industrial settings. They play a vital role in maintaining a healthy work environment by controlling the amount of airborne dust particles that are produced during manufacturing processes. In this article, we will discuss what an... read more
10
Apr
Coal yards and slag yards are one of the main sources of air pollution, which have a major impact on the surrounding environment and public health.
To meet the needs of different scenarios, Zibo Decent Machinery provides a variety of dust reduction equipment options:
Fixed dust... read more
06
Jul
DECENT MACHINERY are pleased to announce that advanced dust collector technology has been successfully exported to Vietnam and applied to an important aggregate production line project. This collaboration is a clear demonstration of the excellent performance of products and the recognition of the international... read more
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