How to select the laboratory heating and cooling circulator?

Generally, small or medium-sized heating and cooling circulators are used in the laboratory. It is applicable to connect reactors in pharmaceutical, chemical and laboratory industries for refrigeration and heating reactions, especially the heating and cooling circulator series in medium-sized laboratories. Its main functions are to control the temperature rise and fall of glass reactors, metal reactors and biological reactors.

The heating and cooling circulator of the medium-sized laboratory is designed to be fully closed, which is used for constant temperature control of external loads. It is designed to be closed, and will not produce oil mist and pungent smell to volatilize into the environment at high temperature, and will not absorb impurities and moisture in the ambient air at low temperature. Only the heat transfer medium is involved in the circulation, and the temperature of the expansion tank is always kept at a low temperature, It avoids many problems such as deterioration of circulating medium and unfriendly environment caused by air entering the circulating system.

Medium-sized laboratory heating and cooling circulator is suitable for the control of heat demand and heat release process in the reaction process. Linear control of the temperature of the materials in the kettle can select the program control mode, and the temperature difference between the heat transfer medium and materials can also be set. The fully closed pipeline design is adopted to reduce the demand for heat transfer fluid, improve the heat utilization rate of the system, and achieve rapid temperature rise and fall. The heat conduction medium in the expansion vessel does not participate in the circulation, which can reduce the risk of moisture absorption and volatilization of the heat conduction medium during operation.

The heating and cooling circulator system of the medium-sized laboratory is equipped with an expansion vessel. The expansion vessel and the liquid circulation system are adiabatic and do not participate in the liquid phase circulation, but are mechanically connected. The medium in the expansion vessel remains at room temperature regardless of the temperature of the circulating liquid. Since the whole liquid circulation is a closed system, there is no water vapor absorption at low temperature and no oil mist generation at high temperature.

The heating and cooling circulator in the medium-sized laboratory is equipped with a heating and cooling integrated container, which has a large heat exchange area, a fast heating and cooling rate, and a relatively small demand for heat transfer oil. It can realize continuous temperature rise and fall. It adopts the compressor technology under high temperature and high pressure, which can directly start the compressor refrigeration from 350 ℃, greatly providing cooling rate, and saving test time and energy.