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There are many air impurities in the heating and air conditioning water circulation system of the spiral micro-bubble collector, which greatly hinder the operation of the system. The removal of system air and impurities can ensure more energy-saving, efficient and smooth operation of the plant.
The presence of gases in the water circuits of heating and air conditioning systems is harmful but unavoidable.
During the initial water injection, commissioning and trial operation of the system, the presence of gas during daily installation and operation will greatly affect the normal operation of the system A common problem is that that the system creates air resistance. As a result, the local heating effect is not ideal and the system equipment will produce severe oxygen corrosion.
In addition, many existing installations, such as underfloor heatingGen and ceiling cooling systems, very sensitive to the presence of gases in the system water.
The degassing effect of the device is ideal at startup. In a fully water filled and tested system, proper degassing is very important for the unit to function optimally. When using degassing products, all gases that could interfere with the operation of the plant are removed by the degassing system.
1. Gas in the system water
Gas in the system circulating water is inevitable, but the gas should be removed quickly and effectively. The main hazards of gas in the water circuit system are:
Noise
Faults in the water circuit system - air lock
Oxygen corrosion
Reduce pump performance - flow, head
Cause pump damage - cavitation
High maintenance and repair costs - frequent replacement of parts and equipmentbody
2. Gas types
Large bubbles (free gas)
Macro bubbles are present in flowing liquids due to their Diversity in number and form not measurable. Large air bubbles are the main cause of air pockets.
Microbubbles (<0.5mm)
There are microbubbles on the surface of the heat exchanger, and the presence of a large number of microbubbles will affect the conduction Heat exchange efficiency great influence.
Dissolved gas
Under a certain temperature and pressure, the gas dissolves in water according to the solubility coefficient. Cause of oxygen corrosion.
3. The method of removing air from the heating and air conditioning water circulation system
According to Henry's law: under a certain pressure, the Solubility of gas in water It is inversely proportional to temperature, that is, the solubility of gas in Water decreases with increasing temperature. At a given temperature, the solubility of gas in water is proportional to the pressure, i.e. H. the solubility of gas in water decreases with decreasing pressure.
Use temperature difference effect, use the spiral micro-bubble separator for degassing:
The core component of the spiral micro-bubble separator is the three-dimensional structure of the spiral mesh, which contains free gas and micro-bubbles in the system Due to the unique structure of the spiral mesh, even the smallest air bubbles can be removed, the separated gas is collected in the gas collection chamber and discharged via the suction device.
It is generally installed at the high temperature point of the system. For the heating system choose the outlet of the heat exchanger equipment. For the air conditioning water system, choose the return line of the radiator.
