International first compressed air energy storage system liquid expander experimental platform completed commissioning
Release Date: 2017-08-22 Source: China Compressor Network View: 20365
Core Tip: Liquid expander is a high-pressure liquid or supercritical fluid expansion to low-pressure liquid or gas-liquid two-phase state of the energy recovery device, supercritical compressed air and liquid air energy storage system is a key component, but also can be used to replace the petrochemical and air separation refrigeration and other systems in the throttle valve, increase the rate of the system out of the system to increase the efficiency of the system. Recently, the international first compressed air energy storage system liquid expander experimental platform in the Institute of Bijie Branch of the National Energy Technology Research and Development Center for large-scale physical energy storage to complete the commissioning of the indicators have reached or exceeded the design indicators to meet the requirements of the liquid expander full operating conditions performance experiments. Liquid expander is a high-pressure liquid or
Liquid expander is a high-pressure liquid or supercritical fluid expansion to low-pressure liquid or gas-liquid two-phase state of the energy recovery device, supercritical compressed air and liquid air energy storage system is a key component, but also can be used to replace the petrochemical and refrigeration systems such as air-splitting throttle valve, increase the rate of the system out of the liquid, improve system efficiency.
Recently, the international first compressed air energy storage system liquid expander experimental platform in the Institute of Bijie Branch of the National Energy Technology Research and Development Center for large-scale physical energy storage to complete the commissioning of the indicators have reached or exceeded the design indicators to meet the requirements of the liquid expander full operating conditions performance experiments.
Liquid expander is a high-pressure liquid or supercritical fluid expansion to low-pressure liquid or gas-liquid two-phase state of the energy recovery device, supercritical compressed air and liquid air energy storage system is a key component, can also be used to replace the petrochemical and refrigeration systems such as air-splitting throttle valve, increase the rate of the system out of the liquid to increase system efficiency. In the liquid expander experimental process of low-temperature thermal and physical properties of the mass is difficult to measure, the experimental conditions are complex and low-temperature cavitation thermal effect of significant problems, greatly restricting the design and development of the liquid expander.
Currently, there is no experimental platform for liquid expander for compressed air energy storage system in the world, for this reason, the R&D Center of Energy Storage of the Institute has designed and built an experimental platform for liquid expander. The platform consists of power system, dynamometer system and control system, and can carry out liquid expander performance experiments with flow rate ranging from 0 to 260m?/h, power ranging from 0 to 90kW, and rotational speed ranging from 0 to 3,000r/min.
At present, the experimental platform has been built and successfully completed the equipment and system debugging, becoming the first international compressed air energy storage system liquid expander experimental platform. The platform can be used for supercritical compressed air and liquid air energy storage system liquid expander performance experiments and internal flow experiments, but also a variety of liquids, gas-liquid two-phase expander to carry out experimental research. The completion of the experimental platform will provide a platform for advanced compressed air energy storage system R & D basis, but also for petrochemical and air separation refrigeration liquid expander R & D to provide support.
Figure 1. Liquid expander experimental platform
Figure 2. Liquid expander experimental control system and operating table
