What is heating agent (heat source) and coolant (Leng Yuan)? What is the effect on the function of the tubular heat exchanger? Is the quality of heat source and cold source good or bad? How to choose heat source and cold source product in the use of tubular heat exchangers? What are the characteristics of the two products? With questions, let's learn about them together.

Tubular heat exchanger

In the market, there are many kinds of heaters and coolants, such as saturation and steam, flue gas and hot water. Commonly used coolants are water, air and nitrogen. When choosing heating agent and coolant, the main consideration is convenient source, enough temperature, low price, safe use.

(1) heating agents commonly used in tubular heat exchangers

1. Saturated water vapor is one of the most widely used heating agents. Because of the high coefficient of heat transfer film when saturated water vapor condenses, the pressure of the vapor can be changed to regulate the heating temperature accurately. The inexpensive steam engine, turbine and exhaust gas can often be used. But when the saturated steam temperature exceeds 180 degrees, high pressure is needed. Generally only used for heating temperature below 180 degrees Celsius.

2. The flue gas obtained from the combustion of flue gas fuel has a very high temperature, up to 700-1000 C, which is suitable for the heating that needs to reach high temperature. The disadvantage of heating with flue gas is that his specific heat is low, the control is difficult and the coefficient of heat transfer film is very low. In addition to the above two commonly used heating agents, can also be combined with the specific conditions of the factory, the use of hot air as a heating agent. Hot water can also be used as a heating agent.

(two) coolant commonly used in tubular heat exchangers

1. water and air are the most commonly used coolants. They can be directly taken from nature and need not be specially processed. Compared with water and air, the specific heat of water is higher and the coefficient of heat transfer film is also higher, but air is more convenient to obtain and use than water, so it should be selected according to local conditions. Water and air are used as coolants to limit the local temperature, and the general cooling temperature is 10~25 degrees. If you want to cool to a lower temperature, you need to apply cryogenic agents, commonly used cryogenic agents are frozen brine (Cacl 2, Nacl and other solutions).

2. The use of coolant, the focus should be on the characteristics of the product itself, cooling degree and the use of tubular heat exchanger environment, time and so on; as long as comprehensive considerations, to choose the appropriate coolant products.

The heating and coolant products of tube-in-tube heat exchanger are easy to choose. If you really don't know the market situation, you can find familiar friends, help to give some suggestions or direct entrustment, let them help to buy, save time and effort; of course, you can also pay close attention to the official website of Qingli Company in real time, learn more product knowledge and technology. If you have any confusion, you can make a phone call: 020-28140958 will help you to solve your problems.