Low temperature constant temperature circulating water tank is a commonly used temperature control equipment in laboratories, mainly used to provide constant low temperature or specific temperature circulating cooling water. It is widely used in various experimental fields such as chemistry, biology, materials, and pharmaceuticals, and is particularly suitable for experiments that require precise temperature control. We will let you know more about the basic principles, main application scenarios, and usage precautions of low-temperature constant temperature circulating water tanks.
1, Basic principle of Laboratory circulating water bath:
The core principle of laboratory water bath is to lower the water temperature through a cooling system and maintain it at the set temperature. The coolant in the sink is cooled by the refrigeration unit, and then the low-temperature coolant is transported to the device that requires temperature control through a circulation pump, and continuously circulated to ensure that the entire system remains stable at the set temperature.
A typical laboratory circulating water bath has the following key components:
Refrigeration system: usually includes a compressor, condenser, and evaporator, used to reduce the temperature of the coolant.
Circulating pump: Transport the coolant to the experimental device and return the cooled liquid to the water tank again to achieve circulation.
Temperature control system: using PID control and other technologies to accurately control the temperature inside the water tank and maintain stable experimental conditions.
Sink and pipeline: The coolant in the sink continuously circulates during the experiment, and the pipeline is used to transport the coolant to the experimental device that requires temperature control.
2, The main application scenarios of low-temperature constant temperature circulating water tank:
Cooling of high-temperature equipment:
In some high-temperature experimental processes, such as heating reactors or rotary evaporators, low-temperature constant temperature circulating water tanks can quickly cool the equipment, prevent excessive temperature from affecting the experimental results, and extend the service life of the equipment.
Cooling chemical reactor:
In chemical reactions, temperature has a significant impact on factors such as reaction rate, selectivity, and yield. The low-temperature constant temperature circulating water tank can accurately regulate the reactor temperature, thereby achieving precise control of the chemical reaction process.
Low temperature cultivation environment:
In biological experiments, low-temperature constant temperature circulating water tanks are commonly used for low-temperature cultivation, especially for the cultivation of microorganisms or cells with strict temperature requirements, to ensure that the experimental subjects grow at the optimal temperature and avoid variations caused by temperature fluctuations.
Temperature control support for precision instruments:
Some precision instruments, such as electron microscopes, spectrometers, etc., generate heat during operation, which affects the stability of the instrument. By using a low-temperature constant temperature circulating water tank for temperature control, the stability of the instrument and the accuracy of measurement can be ensured.
Material testing and physical property research:
The thermal expansion coefficient, thermal conductivity, strength and other physical properties of materials are usually closely related to temperature. Low temperature constant temperature circulating water tank can provide different testing temperature conditions, helping researchers study the behavior of materials at different temperatures.
3, Precautions for using low-temperature constant temperature circulating water tank:
Selection of coolant:
Choose the appropriate coolant according to the experimental requirements, commonly used coolants include pure water, ethylene glycol solution, etc. It should be noted that the viscosity, thermal conductivity, and corrosiveness to equipment materials of the coolant may have an impact on the experiment.
Regular maintenance and cleaning:
The coolant in the sink should be replaced regularly to prevent impurities from depositing and affecting the cooling effect. At the same time, the condenser, circulation pump and other components of the equipment also need to be regularly inspected and maintained to ensure the normal operation of the equipment.
Temperature control settings:
When setting the temperature, it is necessary to follow the experimental requirements to avoid exceeding the temperature control range of the equipment, in order to prevent equipment damage or experimental failure. In addition, rapid cooling or heating may have adverse effects on certain experiments, and a gentle temperature adjustment curve should be chosen as much as possible.
Safe operation:
When operating a low-temperature constant temperature circulating water tank, it is necessary to avoid direct contact with low-temperature coolant to prevent frostbite. During the experiment, the equipment should be placed in a well ventilated area to avoid high temperatures or direct sunlight from affecting the equipment.
4, Summary:
Laboratory thermostat circulator water baths play an indispensable role in modern experiments, providing guarantees for precise temperature control and experimental stability. Whether it is cooling chemical reactions, low-temperature cultivation of biological samples, or temperature regulation of precision instruments, low-temperature constant temperature circulating water tanks can effectively meet experimental needs and provide convenience for researchers' experimental work.
Post time: Nov-05-2024
