Two-way temperature control circulating liquid supply system of laboratory equipment and control method

Abstract

The invention provides a two-way temperature control circulating liquid supply system of laboratory equipment and a control method of the two-way temperature control circulating liquid supply system. The two-way temperature control circulating liquid supply system comprises a first loop used for providing low-temperature circulating liquid for a low-temperature medium cooling device set in a test room, a second loop used for providing normal-temperature circulating liquid for a normal-temperature medium cooling device set in the test room, and a two-temperature circulating water unit connected between the first loop and the second loop. The double-temperature circulating water unit comprises a normal-temperature medium heat exchange tank, a low-temperature medium heat exchange pipe and a low-temperature medium heat exchange tank, the middle of the low-temperature medium heat exchange pipe is located in the normal-temperature medium heat exchange tank, two ports of the low-temperature medium heat exchange pipe are communicated with the low-temperature medium heat exchange tank, and valves are arranged at the ends of the low-temperature medium heat exchange pipe respectively. The double-temperature circulating water unit further comprises a compressor, a condenser, a throttling valve and an evaporator which are communicated with one another, the evaporator is located in the low-temperature medium heat exchange tank, and the condenser is located in the normal-temperature medium heat exchange tank. The cooling efficiency is high, the integration degree is high, the control precision is high, and the application effect is remarkable.

Description

technical field [0001] The invention relates to a cooling system for laboratory equipment, in particular to a dual-path temperature-controlled circulating water supply system and a control method for laboratory equipment. [0002] technical background [0003] During the operation of the engine test room, air conditioners, fuel consumption meter thermostats, intercoolers, exhaust heat exchangers and other equipment will generate different heat when they are working. To ensure that these equipment can operate normally at the expected temperature, it is necessary to Cool these devices. The most commonly used cooling schemes for laboratories are liquid cooling (note: the most commonly used media include water, antifreeze, refrigerant) and air cooling, among which the most commonly used liquid cooling scheme is chilled water (hereinafter Described as low-temperature water) system and cooling water (hereinafter described as normal temperature water) system, while the air-cooled s...

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Problems solved by technology

The two cooling systems exist independently, and there are many pipelines and supporting facilities, which require enough space for layout structurally, so the basic construction cost of the laboratory is virtually increased

[0010] 3. The air cooling efficiency in the single-channel circulating water system is relatively low, and is greatly affected by the external environment. The outlet temperature of the normal temperature circulating water provided by the system in summer is about 10°C higher than that in winter, and the outlet temperature of low temperature circulating water is higher than that in winter. At about 3°C, it is easy to cause inconsistent heat dissipation effects of the cooled equipment in different seasons, and in practical applications (such as the WHTC emission test of the engine requires circulating water to cool the intercooler), the deviation of the circulating water temperature will affect the test results. consistency

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