摘要:
There is provided a hot water meter installed in each individual household in a central hot water system which produces warm water by heating raw water with a heat exchanger and supplies the warm water to the each individual household, the hot water meter including a raw water temperature receiving unit that receives a measurement value of a temperature of the raw water from a raw water temperature measuring unit, a raw water temperature estimating unit that stores a record of the temperature of the raw water or timed raw water temperature data and estimates the temperature of the raw water by using the record of the temperature of the raw water or the timed raw water temperature data, a hot water flow rate measuring unit that measures a flow rate of the hot water flowing through the hot water meter, a hot water temperature measuring unit that measures a temperature of the hot water, and a hot water heating value calculating unit that calculates a heating value of the hot water by multiplying a difference value between the temperature of the hot water and the temperature of the raw water by the flow rate of the hot water.
摘要:
Disclosed is a metal complex including: a tin oxide; titanium oxide nanorods in a rutile phase formed on the tin oxide; and titanium oxide nanoparticles in an anatase phase formed on the titanium oxide nanorods in a rutile phase, and a preparation method thereof, and can be used as a catalyst support in various forms.
摘要:
The present invention relates to a method for synthesizing carbon nanowires directly on the internal surface of a three-dimensional structure including a carbon structure and, more particularly, to a method for synthesizing carbon nanowires at high density on the surface of pores or gaps present in a structure, and a hierarchical structure synthesized by the method. According to the present invention, it is possible to fill fine pores or gaps in a structure, which cause a reduction in mechanical properties or conductivity, with high-density carbon nanowires, thus significantly improving mechanical or electrical performance of a final product.
摘要:
Provided are a reinforced composite membrane and a method of manufacturing the reinforced composite membrane, and more particularly, a reinforced composite membrane including a porous support layer; and an electrolyte membrane layer formed on one surface or each of both surfaces of the porous support layer, at least a portion of the porous support layer being impregnated with an electrolyte, and a method of manufacturing the reinforced composite membrane. The reinforced composite membrane may enhance an interfacial adhesive force between a support and the electrolyte membrane layer, and may be manufactured on a continuous mass production.
摘要:
The present disclosure relates to an ammonia synthesis apparatus, and more particularly, to an electrochemical ammonia synthesis apparatus using an aqueous solution or a molten liquid of an alkali metal as an electrolyte. According to one or more embodiments, when an aqueous solution or a molten liquid of an alkali metal is used as an electrolyte in an ammonia synthesis apparatus, compositions, sizes, and shapes of an electrode and an electrolyte may be easily controlled, and thus a yield of ammonia synthesis may improve.
摘要:
The present invention relates to a remote meter-reading system which can improve transmission efficiency of meter-reading data meter-read by a calorimeter. The present invention provides a remote meter-reading system comprising: a temperature sensor for sensing the temperature of fluid moving through piping; a calorimeter for measuring an amount of energy for cooling or heating on the basis of sensing data transferred from the temperature sensor to generate meter-reading data; and a server for receiving the meter-reading data from the calorimeter to calculate the amount of used energy for cooling or heating, wherein the calorimeter determines whether failure has occurred in itself, generates first meter-reading data when it is determined that the failure has not occurred, generates second meter-reading data different from the first meter-reading data when it is determined that the failure has occurred, and transmits the first and second meter-reading data to the server.
摘要:
This invention relates to a cobalt-based catalyst on a metal structure for selective production of synthetic oil via Fischer-Tropsch reaction, a method of preparing the same and a method of selectively producing synthetic oil using the same, wherein zeolite, cobalt and a support are mixed and ground to give a catalyst sol, which is then uniformly thinly applied on the surface of a metal structure using a spray-coating process, thereby preventing generation of heat during Fischer-Tropsch reaction and selectively producing synthetic oil having a carbon chain shorter than that of wax. This catalyst is prepared by burning a powder mixture obtained by melt infiltration of a cobalt hydrate and a metal oxide support to give a catalyst powder including cobalt oxide/metal oxide support; hybridizing the catalyst powder including cobalt oxide/metal oxide support with a zeolite powder to give a hybrid catalyst powder; mixing the hybrid catalyst powder with an organic binder and an inorganic binder and grinding the mixed hybrid catalyst powder to give a hybrid catalyst sol; spray-coating a metal structure surface-treated with alumina by atomic layer deposition with the hybrid catalyst sol; and thermally treating the metal structure spray-coated with the hybrid catalyst sol.