Methods for treating high temperatures in cooling water
The lithium bromide absorption refrigeration unit consists of four major circulation systems: cold water system, cooling water system, lithium bromide solution circulation system, and heat source drive system. Among them, the cold water system, lithium bromide circulation system, and heat source drive system will bring heat to the unit, while the cooling water system plays a key role in taking away the heat from the unit. Therefore, if the cooling water experiences high temperatures, it will cause great harm to the performance of the unit, as shown below:
1, In terms of cooling effect
1. Decreased cooling capacity: When the temperature of the cooling water increases, the temperature of the lithium bromide solution in the absorber will also increase, and the absorption capacity of the solution will decrease. This increases the partial pressure of water vapor in the evaporator, reduces the evaporation capacity, and ultimately leads to a decrease in cooling capacity.
2. Increased condensing pressure: In the condenser, if the cooling water temperature is too high, it will cause the condensing temperature to rise and the condensing pressure to increase accordingly, which will seriously affect the efficiency of the refrigeration cycle.
2, Equipment operation aspect
1. Internal pressure rise: If the cooling water temperature is too high, it can cause an increase in the internal temperature and pressure of the unit, which may lead to equipment overpressure operation and greatly increase the risk of equipment damage.
2. Corrosion intensifies: When the temperature of the cooling water is too high, the temperature of the lithium bromide solution will also increase. When the temperature of the solution exceeds 165 ℃, the corrosion degree of carbon steel and copper will increase sharply, thereby accelerating the corrosion aging process of the equipment.
3, Regarding the state of the solution
Increased crystallization risk: Excessive cooling water temperature can raise the temperature of dilute solutions, leading to an increase in the mass fraction of concentrated solutions and significantly increasing the risk of solution crystallization.
4, In terms of economic performance
1. Increased energy consumption: When the inlet temperature of the economic cold water is between 27-32 ℃, and the cooling water temperature exceeds 32 ℃, the cooling effect decreases. In order to maintain the same cooling effect, the lithium bromide unit needs to consume more energy, ultimately leading to an increase in operating costs.
2. Shortened equipment lifespan: A series of problems such as overpressure operation and intensified corrosion caused by high temperature of cooling water can reduce the service life of equipment, thereby increasing the cost of equipment replacement and maintenance.
The following common methods can be used to address the issue of high temperature in the cooling water of lithium bromide machines:
1, Optimize cooling system
1. Increase or replace cooling towers: If the existing cooling tower has insufficient cooling capacity, consider increasing the number of cooling towers or replacing them with larger capacity and higher efficiency cooling towers.
2. Regular maintenance of cooling tower: Clean the packing inside the cooling tower in a timely manner to prevent scale from adhering and ensure the cooling efficiency of the cooling tower.
3. Optimize the cooling water circulation system: Check the pipes of the cooling water circulation system to ensure that they are unobstructed, without blockage or leakage, and ensure that the cooling water can circulate smoothly.
2, Adjust operating parameters
1. Reduce the inlet temperature of cooling water: By adjusting the operating parameters of the cooling tower, such as increasing the fan speed, increasing the cooling water flow rate, etc., the inlet temperature of the cooling water can be reduced.
2. Control the cooling water flow rate: Increase the cooling water flow rate appropriately to improve the cooling effect, but be careful not to exceed the maximum flow rate allowed by the equipment.
3, Adopting auxiliary cooling measures
1. Spray cooling: Install a spray device on the cooling water inlet pipeline to spray the cooling water onto high-temperature components, using the principle of evaporative cooling to reduce temperature.
2. Mechanical cooling: Install mechanical cooling equipment, such as chillers, in the cooling water system to provide secondary cooling of the cooling water.
4, Strengthen monitoring and management
1. Real time monitoring of cooling water temperature: Install temperature sensors to monitor the temperature changes of the cooling water in real time. Once an abnormal increase in temperature is detected, immediate measures should be taken.
2. Regularly check the operation status of equipment: Regularly check the operation status of lithium bromide units and cooling systems, and promptly detect and handle equipment failures.
Lithium bromide solution manufacturer
About us
Flier Refrigeration Engineering Technology Co., Ltd is a professional technical service enterprise integrating central air-conditioning host sales, spare parts sales, unit repair and maintenance.
Factory located in Zhenjiang, Jiangsu, covering an area of 25,000 square meters ,and has been built with 1 R&D center, 1 pilot plant, 3 An innovative production, learning, and research base composed of a professional production workshop and its corresponding infrastructure. At present, the company has become a well-known technical service provider in the field of central air conditioning in China.
The company's main business scope includes: central air-conditioning maintenance, cleaning and technical services; cooling tower and fan coil cleaning and maintenance services; custom processing of lithium bromide solution; sales of lithium bromide solution special impurity separators; central air-conditioning host and various zero Sales of accessories; installation and sales of central air conditioning systems, etc.
Contact us
Ms. Lillian GUO
Zhenjiang FLIER Refrigeration Engineering Technology Co., Ltd
Jiangsu, China
Tel: + 86 15358588768(Whatsapp)
Wechat：15358588768
E-mail: mdguolijuan@zjflier.com
