Abstract: Provided is a combustion experiment device, which includes a reaction tube into which a sample fluid flows and to which a temperature gradient in which a temperature rises toward a downstream side is imparted, and a burner part that is configured to flow a combustible gas along and around the reaction tube from the downstream side to an upstream side of the reaction tube and to maintain a flame surrounding the reaction tube from the outside in a radial direction of the reaction tube.

Abstract: Provided is a combustion experiment device, which includes a reaction tube into which a sample fluid flows and to which a temperature gradient in which a temperature rises toward a downstream side is imparted, and a burner part that is configured to flow a combustible gas along and around the reaction tube from the downstream side to an upstream side of the reaction tube and to maintain a flame surrounding the reaction tube from the outside in a radial direction of the reaction tube.

Abstract: In a combustion experimental apparatus to obtain the positions of flames formed inside a tube (1), it is possible to adjust a temperature gradient in a longitudinal direction applied to the tube, by including a temperature-adjusting fluid supply device (2) to cause a temperature-adjusting fluid to flow along the tube.

Abstract: A fuel property determination method includes a reaction mechanism analysis process (S1) of analyzing elementary reactions that compose chemical reactions between a plurality of types of initial materials including the materials that compose the fuel and obtaining the elementary reactions as fuel elementary reactions, and an octane number determination process (S2) of calculating the combustion characteristics of the fuel by performing a simulation based on the fuel elementary reactions and determining the octane number based on the combustion characteristics of the fuel.

Abstract: The fuel physical property determination method relating to the first aspect of the present invention includes: a test fuel flame-imaging step of obtaining imaging data by imaging flames formed by supplying a pre-mixed gas containing a test fuel and an oxidant agent, to a test tube in which an internal flow path thereof has a diameter set smaller than a flame-quenching distance at normal temperature; and a physical property determination step of determining a physical property of the test fuel by comparing the imaging data obtained in the test fuel flame-imaging step and imaging data obtained by imaging flames ignited by supplying a pre-mixed gas containing a standard-mixed fuel and an oxidant agent, to the test tube, the standard-mixed fuel having a known physical property.

Abstract: The fuel physical property determination method relating to the first aspect of the present invention includes: a test fuel flame-imaging step of obtaining imaging data by imaging flames formed by supplying a pre-mixed gas containing a test fuel and an oxidant agent, to a test tube in which an internal flow path thereof has a diameter set smaller than a flame-quenching distance at normal temperature; and a physical property determination step of determining a physical property of the test fuel by comparing the imaging data obtained in the test fuel flame-imaging step and imaging data obtained by imaging flames ignited by supplying a pre-mixed gas containing a standard-mixed fuel and an oxidant agent, to the test tube, the standard-mixed fuel having a known physical property.

Abstract: In a combustion experimental apparatus to obtain the positions of flames formed inside a tube (1), it is possible to adjust a temperature gradient in a longitudinal direction applied to the tube, by including a temperature-adjusting fluid supply device (2) to cause a temperature-adjusting fluid to flow along the tube.

Abstract: A fuel property determination method includes a reaction mechanism analysis process (S1) of analyzing elementary reactions that compose chemical reactions between a plurality of types of initial materials including the materials that compose the fuel and obtaining the elementary reactions as fuel elementary reactions, and an octane number determination process (S2) of calculating the combustion characteristics of the fuel by performing a simulation based on the fuel elementary reactions and determining the octane number based on the combustion characteristics of the fuel.

Abstract: A small microcombustion heater which can realize reliable combustion. The heater has a premixed gas passage which reaches a combustion chamber, and a passage for a combustion gas drawn from the combustion chamber. The passages are arranged in a spiral form in a manner such that a heating wall is provided between the passages. The width of the premixed gas passage is a quenching distance or less, where the quenching distance is determined depending on the premixed gas. The heater has two outer faces for holding the spiral passages from both sides of the upper and lower edges of the heating wall, and at least one of the outer faces is a heating surface for emitting radiant heat. Typically, the spiral passages are placed between a heat-resisting heating plate and a heat insulating plate, and an outer face of the heat-resisting heating plate functions as the heating surface.

Abstract: A small microcombustion heater which can realize reliable combustion. The heater has a premixed gas passage which reaches a combustion chamber, and a passage for a combustion gas drawn from the combustion chamber. The passages are arranged in a spiral form in a manner such that a heating wall is provided between the passages. The width of the premixed gas passage is a quenching distance or less, where the quenching distance is determined depending on the premixed gas. The heater has two outer faces for holding the spiral passages from both sides of the upper and lower edges of the heating wall, and at least one of the outer faces is a heating surface for emitting radiant heat. Typically, the spiral passages are placed between a heat-resisting heating plate and a heat insulating plate, and an outer face of the heat-resisting heating plate functions as the heating surface.