Abstract: An error correction circuit includes a memory that stores at least one decoding parameter, a low density parity check (LDPC) decoder that includes a first variable node storing one bit of the data, receives the at least one decoding parameter from the memory, decides a degree of the first variable node based on the at least one decoding parameter, and decides a decoding rule necessary for decoding of the one bit based on the degree of the first variable node, and an adaptive decoding controller that outputs corrected data based on a decoding result of the LDPC decoder.

Abstract: An error correction circuit includes a memory that stores at least one decoding parameter, a low density parity check (LDPC) decoder that includes a first variable node storing one bit of the data, receives the at least one decoding parameter from the memory, decides a degree of the first variable node based on the at least one decoding parameter, and decides a decoding rule necessary for decoding of the one bit based on the degree of the first variable node, and an adaptive decoding controller that outputs corrected data based on a decoding result of the LDPC decoder.

Abstract: An error correction circuit includes a memory that stores at least one decoding parameter, a low density parity check (LDPC) decoder that includes a first variable node storing one bit of the data, receives the at least one decoding parameter from the memory, decides a degree of the first variable node based on the at least one decoding parameter, and decides a decoding rule necessary for decoding of the one bit based on the degree of the first variable node, and an adaptive decoding controller that outputs corrected data based on a decoding result of the LDPC decoder.

Abstract: An error correction circuit includes a memory that stores at least one decoding parameter, a low density parity check (LDPC) decoder that includes a first variable node storing one bit of the data, receives the at least one decoding parameter from the memory, decides a degree of the first variable node based on the at least one decoding parameter, and decides a decoding rule necessary for decoding of the one bit based on the degree of the first variable node, and an adaptive decoding controller that outputs corrected data based on a decoding result of the LDPC decoder.

Abstract: An evaporative desalination device includes a multi stage vapor generator that generates vapor by passing a hot water supply pipe successively through a plurality of vapor generators to evaporate sea water inside thereof, a multi effect vapor generator that uses vapor in the respective vapor generators as heat source and forms a plurality of evaporator groups which can adjust a number of evaporators disposed inside the respective evaporator groups and produce fresh water according to amounts of supplied vapor to evaporate sea water in the evaporator groups on an outer circumference surface of an evaporation tube by heat of vapor flowing in the evaporation tube, and a discharge unit that condenses vapor in the multi effect generator by sea water to discharge fresh water in liquid state, and returns and supplies portions of discharged sea water to the multi stage vapor generator and the multi effect evaporator.

Abstract: Disclosed is an evaporative desalination device of multi-stage and multi-effect using solar heat constructed in multi stage and multi effect as a desalination device that is capable of not only increasing fresh water output but also resolving a problem of conventional desalination device having series structure as well, through constructing: a multi stage vapor generator that generates vapor by passing a hot water supply pipe successively through a plurality of vapor generators to evaporate sea water inside thereof; a multi effect vapor generator that uses vapor in the respective vapor generators as heat source and forms a plurality of evaporator groups; and a discharge unit that condenses vapor in the multi effect generator by sea water to discharge fresh water in liquid state, and returns and supplies portions of discharged sea water to the multi stage vapor generator and the multi effect evaporator.

Abstract: There is provided an evacuated tubular solar collector with an eccentric type manifold flange capable of changing flow of a heating medium and improving the electric heat performance of a manifold by employing an eccentric end cap with a fluid path and a baffle in the manifold and improving the structure of the manifold. The evacuated tubular solar collector may comprise an evacuated tubular solar collector; a manifold being installed at an upper position of the evacuated tubular solar collector and including a number of heat dissipation holes; eccentric end caps attached to both sides of the manifold, the eccentric end cap including a fluid path; and a baffle attached to an exit of the fluid path through which a fluid flows into. The fluid path and the baffle may be positioned tilted, thereby to improve uniform transfer of heat in the evacuated tubular solar collector.

Abstract: There is provided an evaporative desalination apparatus of sea water using a phase change medium, and more particularly, a desalination method by evaporation, for producing fresh water from sea water by using various high heat sources, such as solar heat, engine heat and the like. Instead of a conventional method in which warm water is supplied to an evaporator of an desalination apparatus to evaporate seawater, the present invention provides the phase change medium capable of supplying a much more amount of heat to the evaporator, thereby enhancing the efficiency of the desalination apparatus to produce a great quantity of fresh water or manufacturing a compact desalination apparatus. The method of providing the amount of heat according to the present invention is to circulate the phase change medium. In the present invention, the latent heat generated when a gas of high heat is injected and is phase-changed to a liquid state is used to evaporate sea water.

Abstract: There is provided an evacuated tubular solar collector with an eccentric type manifold flange capable of changing flow of a heating medium and improving the electric heat performance of a manifold by employing an eccentric end cap with a fluid path and a baffle in the manifold and improving the structure of the manifold. The evacuated tubular solar collector may comprise an evacuated tubular solar collector; a manifold being installed at an upper position of the evacuated tubular solar collector and including a number of heat dissipation holes; eccentric end caps attached to both sides of the manifold, the eccentric end cap including a fluid path; and a baffle attached to an exit of the fluid path through which a fluid flows into. The fluid path and the baffle may be positioned at a tilt angle, thereby to improve uniform transfer of heat in the evacuated tubular solar collector.