摘要:
A combustion control method for use in a catalytic combustion system having (a) a gaseous mixture inlet port, located at the upstream side of said catalytic combustion system, for the entrance of a fuel-air mixture; (b) an exhaust gas outlet port, located at the downstream side of said catalytic combustion system, for the exit of an exhaust gas; (c) a primary combustion chamber in which a catalyst body is disposed, said catalyst body being formed of a porous base material with numerous communicating holes that supports thereon an oxidation catalyst; (d) a secondary supply port, located downstream of said primary combustion chamber, for the supply of a gaseous mixture or air; and (e) a secondary combustion chamber located downstream of said secondary supply port; comprising such process that an excess air ratio of said primary combustion chamber is initially set above 1 and after the rate of combustion of said secondary combustion chamber exceeds a given level, combustion is made to take place, with the excess air ratio of said primary combustion chamber set below 1.
摘要:
A catalyst combustion apparatus, includes: a fuel feed course for feeding liquid fuel; an air feed course for feeding air; a mixing unit for mixing fuel to be fed from the fuel feed course with air to be fed from the air feed course; a vaporizing unit for heating mixture-obtained by mixing in the mixing unit to vaporize the liquid fuel; a catalyst heating unit disposed on the downstream side of the vaporizing unit in contact with or in close proximity to the vaporizing unit in terms of conduction of heat, for carrying an oxidation catalyst component; and a catalyst combustion unit provided on the downstream of the catalyst heating unit, having a multiplicity of conductive holes, and the vaporizing unit is capable of utilizing heat from the catalyst heating unit.
摘要:
In order to realize a catalytic combustion apparatus capable of effectively utilizing radiation from a surface of a catalytic element, providing a higher efficiency of heat exchange, and characterized in superior characteristics of an exhaust gas, a catalytic combustion apparatus according to the invention comprises a catalytic element 7 in the shape of a plate consisting of multiple through-holes for combusting a mixed gas of a fuel gas and air and a combustion chamber 6 accommodating the catalytic element 7, and incorporating a radiated heat receiving plate 11 that is positioned in opposition to either one of two surfaces of the catalytic element 7 as a part of its side walls.
摘要:
A catalytic combustor utilizes radioactive heat with a high efficiency, has a radiation wavelength distribution rich in visible ray components, and is excellent in complete combustibility and visual confirmability even in a standby combustion condition. The present invention forms a thin film coat of metal or metal oxide which transmits rays having short wavelengths and reflects rays having long wavelengths on a surface of a transmission window disposed opposite to an upstream surface of a catalyst body. The catalyst body is composed of a metal wire structure having a high aperture ratio and is disposed in a combustion chamber. Furthermore, an auxiliary catalyst body which has a high aperture ratio and a small capacity is disposed in the vicinity of a mixed gas injection port at a location in contact with the mixed gas when the flow rate of the mixed gas is less than a predetermined value. Moreover, a freely openable/closable cover having reflectivity to heat rays is disposed in the vicinity of an outside surface of the transmission window. An air flow path is formed between the transmission window and a second transmission window. Also a thin film coat reflecting radioactive heat rays having long wavelengths is disposed on an inside surface of the second transmission window.
摘要:
It is not possible to store heat of a domestic hot water supply level at a high density. If thermal storage temperature is T, variation in enthalpy in a chemical reaction is ΔH, variation in entropy is ΔS, and variation in free energy is ΔG, a thermal storage material satisfying a relationship of TΔS≧ΔG is used under a condition of ΔH>0 so as to promote a reaction for putting the thermal storage material in a thermal storage reaction portion in an energy storing state by having supplemental energy added by an electrode portion when putting the thermal storage material in the energy storing state by decomposing or separating it.
摘要:
There is provided a catalytic combustion apparatus that allows power consumption of a carburetor heater to be significantly reduced, and allows a fuel consumption amount to be reduced. A catalytic combustion apparatus including: a fuel tank 1 for feeding fuel and others, an air feeding fan 5 for feeding air and others, a carburetor 8 for evaporating the above described fuel, a gas mixture space 15 that holds the above described evaporated fuel and the above described air, a catalytic combustion unit 17 adjacent to the above described gas mixture space, and a catalyst heating element 10 provided in the gas mixture space 15, characterized in that the catalyst heating element 10 has a first heating compartment 11 and a second heating element compartment 12 provided from upstream to downstream of a flow of the above described gas mixture, and that the compartments carry catalysts on all or part thereof and are provided with a first gas mixture vent 13 and a second gas mixture vent 14.
摘要:
A low-cost, high-mass-productivity catalytic combustion apparatus having a construction that permits easy maintenance is realized. There is provided a catalytic combustion apparatus in which, by means of a combustion chamber having a fuel supply portion 1 and a combustion air supply portion on the upstream side thereof and a combustion gas exhaust port on the downstream side thereof and a catalytic combustion portion with an upstream surface and a downstream surface provided in the combustion chamber, the upstream surface and the downstream surface being substantially parallel to each other, a fuel-air mixture supplied to the interior of the combustion chamber is caused to react to liberate heat. The catalytic combustion apparatus includes a heat exchange portion, which constitutes part of walls of the combustion chamber, and a fin-type radiant heat-receiving portion, which protrudes from the heat exchange portion into the combustion chamber and being provided in the vicinity of the catalytic combustion portion. In this catalytic combustion apparatus, the surface of the fin-type radiant heat-receiving portion and the surface of the heat exchange portion face in the same direction.
摘要:
A purification catalyst and a gas-purifying apparatus are provided which are capable of sufficiently purifying a gas subject to treatment at low temperatures. The purification catalyst includes ZrO2 having a specific surface area of 50 m2/g or less and a monoclinic crystal system. The gas-purifying apparatus includes the aforementioned purification catalyst as a first purification catalyst, and a second purification catalyst containing Mn as a major component and disposed upstream of the first purification catalyst.
摘要:
The present invention provides a regenerative heat pump system including a heat pump cycle, first storage vessel for storing a heat storage material, heat exchange device between first refrigerant and heat storage material for heating and decomposing the heat storage material by heat from a refrigerant, and heat exchange device between second refrigerant and an other heat storage material for transferring heat from the separated heat storage material to the refrigerant. The system also includes second storage vessel for storing the decomposed heat storage material, and heat generating device for generating heat by recombining the heat storage material stored in the second storage vessel and for heating a heating medium. The heat exchange device between the first refrigerant and the heat storage material is also used as a radiator of the heat pump cycle, and the heat exchange device between second refrigerant and the other heat storage material is also used as at least a part of an evaporator of the heat pump cycle.
摘要:
The present invention provides a regenerative heat pump system including a heat pump cycle, first storage vessel for storing a heat storage material, heat exchange device between first refrigerant and heat storage material for heating and decomposing the heat storage material by heat from a refrigerant, and heat exchange device between second refrigerant and an other heat storage material for transferring heat from the separated heat storage material to the refrigerant. The system also includes second storage vessel for storing the decomposed heat storage material, and heat generating device for generating heat by recombining the heat storage material stored in the second storage vessel and for heating a heating medium. The heat exchange device between the first refrigerant and the heat storage material is also used as a radiator of the heat pump cycle, and the heat exchange device between second refrigerant and the other heat storage material is also used as at least a part of an evaporator of the heat pump cycle.