High-temperature steam heat pump dynamic modeling method and system
A high-temperature steam and heat pump system technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of high heating output temperature, failure to provide, limited use and promotion, etc., to achieve accurate steady-state performance, Low thermal inertia, good optimization and control system effects
Pending Publication Date: 2022-02-11
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology
[0004] At present, high-temperature heat pumps are mainly concentrated in the temperature range of 60°C to 80°C. In practical applications, they cannot provide higher heating output temperatures, which greatly limits their use and promotion in many industrial processes, such as drying of chemicals and paper. And on-site cleaning, these applications require heating in a higher temperature range, usually 120°C to 130°C, and high temperature steam heat pumps can generate high temperature steam at a temperature of 120°C to 160°C to meet the needs of industrial production
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[0038] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0039] In order to better optimize and control the high-temperature steam heat pump, it is necessary to carry out static characteristic research and dynamic modeling on it. The embodiment of the present application provides a dynamic modeling method for a high-temperature steam heat pump. The dynamic modeling of a high-temperature steam heat pump The method includes steps 1 to 5.
[0040] Step 1. According to the structure of the high temperature steam heat pump system, determine the components of the high temperature steam heat pump system.
[0041] see figure 1, is a schematic structural diagram of a high-temperature steam heat pump system provided in an embodiment of the present application. The structure of the high-temperature steam heat...
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The invention belongs to the field of comprehensive energy system application, and provides a high-temperature steam heat pump dynamic modeling method and system. The method comprises the steps that all components of a high-temperature steam heat pump system are determined, a refrigerant is selected, initial parameters of the high-temperature steam heat pump system are determined in combination with the requirements of the actual industry for the steam temperature and system energy consumption and are used as the initial state for systemdynamic modeling, lumped parameter models are established for an evaporator, a first condenser, a second condenser and a flash tank by using a moving boundary method and a lumped parameter method, steady-state models are established for a scroll compressor, a screw compressor, a first thermostatic expansion valve and a second thermostatic expansion valve by using an empirical formula, and a simulation module corresponding to the mathematical model is developed on the simulation platform, and analogue simulation is carried out. According to the high-temperature steam heat pump dynamic modeling method and system, the steady-state performance of the system is analyzed more accurately, and the high-temperature steam heat pump system is optimized and controlled better.
Description
technical field [0001] The application belongs to the technical field of comprehensive energy systems, and in particular relates to a dynamic modeling method and system for a high-temperature steam heat pump. Background technique [0002] In recent years, with the rapid development of the world economy, energy consumption has gradually increased. Global environmental issues such as ozone layer depletion, global warming, melting glaciers and rising sea levels have attracted worldwide attention and become major issues in the world. In the face of the fossil energy crisis and global environmental problems, we are committed to the development and utilization of renewable energy, such as shale oil and gas, combustible ice, solar energy, wind energy, hydropower, geothermal energy and biomass energy, which can effectively reduce the dependence on fossil fuels and protect environment. At the same time, popularizing new energy-saving technologies and reducing energy consumption in i...
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IPC IPC(8): G06F30/17G06F30/28G06F113/08G06F119/08G06F119/14
CPCG06F30/17G06F30/28G06F2113/08G06F2119/08G06F2119/14
Inventor 梁俊宇袁兴宇杨洋
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST