Abstract:
The present invention relates to an ionic liquid compound which is capable of promoting gas hydrate formation. The compound of the present invention can convert more gas into the gas hydrate at the same temperature and pressure in short time so that costs for gas hydrate formation can be drastically reduced and the compound can be economical.
Abstract:
The present invention relates to an apparatus and a method for sensing frost, which accurately sense the existence of frost sticking to a coil in an outdoor unit and accurately detect the degree of sticking in order to accurately determine the operation and stop timing of a defrost circuit of a heat pump. The apparatus prepared by the present invention comprises a supporting bracket which is fixed and installed to an outdoor unit case; a sticking sensor comprising multiple light emitting units which are detachably mounted on the supporting bracket in order to project light to the coil in the outdoor unit, and a light receiving unit which is installed in the center of the multiple light emitting units in order to receive reflected light by the coil surface of the outdoor unit and frost; and a control unit which outputs an operation or a stop signal to the defrost circuit according to an output voltage signal which eliminates radio noise from output voltage signals outputted from the light receiving unit of the sticking sensor. [Reference numerals] (250) Defrost circuit
Abstract:
Provided are catechol grafted copolymers, copolymer cross-linked copolymer compounds, functional matrix compounds and a method for producing the same. In a more particular way, the present invention relates to catechol grafted copolymers characterized in comprising: a polyvinyl copolymer organization made up of polyvinyl copolymers in which vinyl compounds are bonded or copolymer in which main chain formable compounds are connected to polyvinyl copolymers; and a catechol derivative grafted in the polyvinyl copolymer organization.
Abstract:
The present invention relates to a method for manufacturing thermoelectric material of Mg alloy solid solution and thermoelectric material manufactured thereby. According to the present invention, the method for manufacturing thermoelectric material of Mg alloy solid solution and thermoelectric material manufactured thereby includes a mixing step for mixing a raw powder; a synthesis step for synthesizing Mg2Si-Mg2Sn solid powder; and a sintering step.
Abstract:
The present invention relates to a dehumidification system and an operation method thereof. More specifically, the dehumidification system includes a compressor compressing a drawn refrigerant; a condenser coil installed in a plurality of rows, wherein a high pressure and high temperature refrigerant discharged from the compressor is drawn and heats the air drawn from the outside; an expansion valve discharging a low pressure and low temperature refrigerant by expanding the refrigerant discharged from the condenser coil; a dehumidification coil in which the refrigerant discharged from the expansion valve is drawn and removes moisture of the humid air drawn from the outside by being evaporated; an electric valve controlling the refrigerant drawn into the condenser coil by being installed on one or more front ends among a plurality of rows included in the condenser coil; a three way valve converting the flowing direction of the refrigerant by being included on a plurality of rear ends including the dehumidification coil; a control valve drawing the refrigerant discharged from the compressor with heat in which frosting is generated when the frosting is generated in one among the rows forming the dehumidification coil; and a blower sucking the humid air into the dehumidification system or discharging the humid air in order to perform heat exchange in the dehumidification coil and the condenser coil. [Reference numerals] (AA) All heat perform evaporating function;(BB) Wet air;(CC) Inflow air;(DD) All heat perform condensing function
Abstract:
PURPOSE: A manufacturing method of an anode active material is provided to manufacture a lithium-iron-metal phosphate-carbon composite nanofiber anode active material with a large surface area by controlling the lithium-iron-metal phosphate-carbon composite to the nanofiber form using electric radiation. CONSTITUTION: A manufacturing method of a lithium-iron-metal phosphate-carbon composite nanofiber anode active material using electric radiation comprises: a first step of making a viscid solution by mixing a raw material, which is quantified by stoichlometric ratio with the empirical formula: LiFe1-xMxPO4 (0
Abstract:
PURPOSE: A manufacturing method of a positive active material is provided to manufacture a Li[Ni1/3Co1/3Mn1/3]O2 positive active material with improved surface area and high voltage performance by using an electrospinning method. CONSTITUTION: A manufacturing method of a Li[Ni1/3Co1/3Mn1/3]O2 positive active material comprises a step of preparing a solution including a precursor of the Li[Ni1/3Co1/3Mn1/3]O2 positive active material; a step of electrospinning the solution and drying the solution to manufacture nanofiber; and a step of heat-treating the dried nanofiber. The heat-treatment step consists of a first heat treatment at 450-550 °C and a second heat treatment at 600-900 °C and is conducted under an oxygen atmosphere. [Reference numerals] (AA) Preparing raw material; (BB) Mixing and stirring; (CC) Electric radiating; (DD) Drying and pulverizing; (EE) Heat treating (Air/O_2 atmosphere)