Principles, advantages and characteristics of gas-liquid heat exchangers

The gas-liquid heat exchanger is a highly thermally conductive component that exchanges heat between gas and liquid through a high vacuum sealed tube shell. It is often used for industrial waste heat recovery and reuse. In this article we will talk about gas-liquid exchange in detail. Let’s learn about the principles, advantages and characteristics of heaters.

1. Structure and principle of gas-liquid heat exchanger

The equipment used for gas-liquid heat exchange is a heat pipe heat exchanger. Its equipment occupies a small area. The main heat exchange elements are composed of heat pipes and have a compact structure. The left side of the equipment is the flue gas channel, and the right side is water or other media. The channels are separated by partitions in the middle without interfering with each other. The high-temperature flue gas is discharged from the left channel. When the high-temperature flue gas is discharged, the high-temperature flue gas washes the heat pipe. When the flue gas temperature is higher than 30°C, the heat is transferred to the liquid medium to heat up.

2. Advantages and characteristics of gas-liquid heat exchanger

The heat recovery effect of gas-liquid heat exchangers is much higher than that of other types of industrial equipment. The equipment can rely on its own internal heat transfer elements to achieve fast heat conduction and high efficiency. The good isothermal properties also allow the heat pipe to operate under small temperature differences. It can achieve low thermal resistance and engage in heat transfer. The anti-corrosion and anti-scaling capabilities of the tubular structure are also not weak. Through appropriate heat flow transformation, the heat pipe wall is adjusted above the dew point of the low-temperature fluid, thereby preventing dew point corrosion, enabling the equipment to operate for a long time and avoiding the flue gas dew point. This also reduces dust adhesion problems. The service life of the equipment can be more than 10 years, and the maintenance cost is low and simple.