6 results about "Vapor cloud" patented technology

The invention discloses a method for predicting the explosion intensity of a steam cloud based on a flame velocity. The method comprises the following steps: constructing a flame propagation prediction formula by integrating factors such as a gas cloud limitation degree, obstacle blockage, steam cloud activity and a flame propagation distance; collecting data in different scenes for fitting analysis, and determining values of undetermined parameters in the flame propagation prediction formula in different scenes; solving a flame propagation prediction formula to obtain a dimensionless flame velocity based on the value of the undetermined parameter in the target scene, and determining an actual flame velocity in combination with the sound velocity; based on the determined actual flame speed, predicting the explosion overpressure through a relational expression between the actual flame speed and the explosion overpressure established in the target scene; based on the predicted explosion overpressure, the explosion impulse is predicted through a relational expression between the explosion overpressure and the explosion impulse established in the target scene; and representing the explosion intensity of the steam cloud based on the predicted explosion overpressure and explosion impulse. The method is simple in process, high in reliability and wide in application range.

The embodiment of the invention discloses a hazardous chemical accident simulation analysis method. A specific embodiment of the method comprises the following steps: for hazardous chemicals involved in a leakage accident to be simulated, determining the attributes of the hazardous chemicals and the container attributes of the hazardous chemicals; based on the container attribute and the hazardous chemical substance attribute, whether leakage is instantaneously released or continuously released is judged, so that an accident scene is determined; selecting a simulation model matched with the accident scene from a plurality of preset simulation models as a target simulation model; performing simulation analysis on the accident related information by using the target simulation model, and determining simulation result information; displaying simulation result information; wherein the various simulation models comprise at least two of the following models: a vapor cloud explosion model, a diffusion model, a jet fire model, a boiling liquid expansion vapor cloud explosion model and a liquid pool fire model. Therefore, a novel simulation analysis mode of the dangerous chemical accident is provided.

A system for generating a hydrogen-infused electrolytic aerosol for wellness applications that may include a housing with a water tank containing an aqueous electrolyte solution, at least one ultrasonic transducer positioned in the water tank to form a vapor cloud of the aqueous electrolyte solution, and a hydrogen generation unit that generates hydrogen gas that is combined with the vapor cloud in a mixing chamber that is presented to a conveyance path connected to the enclosure where a first light source emits light to illuminate the vapor cloud.

This invention discloses a hydrogen- or ammonia-blended fuel jet fire experimental system, combustion diagnosis method, and equipment, which can solve problems such as experimental scale distortion, fragmented disaster chain process, and insufficient intelligent control. It realizes integrated simulation of the entire chain from leakage and vapor cloud diffusion to fire decay, and can obtain experimental data that matches real major accidents. It eliminates the data distortion and blind spots of segmented and isolated experiments, and reduces the control complexity and operational intensity of large-scale complex experiments.

The application discloses a kind of simulation non-uniform rocket kerosene vapor cloud combustion experiment device and method in oxygen-rich atmosphere, including simulation oxygen-rich atmosphere tank, gas supply system, heating temperature control system, multi-channel electric ignition system, data test acquisition system and exhaust system;Gas supply system is connected in sequence external oxygen gas cylinder, gas flowmeter, one-way valve to oxygen-rich atmosphere tank;Silicone rubber electric hot plate in heating temperature control system is fixed in the inner wall of oxygen-rich atmosphere tank, oil pool heater is fixed in the bottom of oxygen-rich atmosphere tank;Multi-channel electric ignition system includes adjustable igniter, ignition electrode;In data test acquisition system, hydrocarbon sensor, first oxygen sensor extends to outside multichannel data acquisition module, transmission module and computer;The exhaust system is respectively connected with second oxygen sensor and vacuum pump.The application simulates non-uniform concentration field distribution formed by rocket kerosene heated evaporation diffusion in oxygen-rich atmosphere under actual environmental conditions and tests its vapor cloud combustion characteristics, with good reliability and strong practicability.

A method of making stable clusters of atoms that are of subcritical size, in which rapid expansion and rapid cooling of a vapor cloud takes place in which the vapor conditions or parameters are controlled so that multiple stable clusters, each with a size less than the critical size and formed from sub-critical nucleation, are condensed.