Abstract:
PROBLEM TO BE SOLVED: To provide a water heater system increasing capacity without using more consistent large additional energy in a point of a water temperature in a used portion with increased capacity of high temperature water, increasing capacity in a state minimizing addition of complexity, and providing additional capacity in a state minimizing additional maintenance demand. SOLUTION: The replenishing water heater tank, and system are characterized by a replenishing tank provided with an inner vessel surrounded by an outer jacket. In a space between the inner vessel and the outer jacket, almost all air is evacuated so that the inner vessel is vacuum insulated. The replenishing tank is provided with a water inlet port and a water outlet port. Water is heated in a water heater, and it is transferred from an upper portion of the water heater tank to a lower portion of the vacuum-insulated replenishing tank through an insulated line and a dip tube extending between a water inlet port and a bottom of the inner vessel. The high temperature water is withdrawn from the upper port 8 on of the inner vessel of the replenishing tank for use in a home or the like. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To calculate the distribution flow rate of cryogenic liquid with a high degree of accuracy. SOLUTION: In a cryogenic liquid distribution system, a distribution hose 30 communicating with a measurement chamber 15 and a meter 36 distributes LNG in the measurement chamber 15 equipped with the meter 36. A distribution line 28 is arranged between the meter 36 and the distribution hose 30 and equipped with a distribution valve 34. A check valve 64 is provided in a discharge line 62 which is bypassed to the distribution valve 34, to return captured LNG in the hose after distribution to the measurement chamber 15 due to pressurization caused by surrounding heat. Permittivity of LNG filled into the measurement chamber 15 is measured by a condenser probe and compared with the permittivity of pure methane. Based on this comparison, density and flow rate of LNG are determined.
Abstract:
PROBLEM TO BE SOLVED: To provide a system for distributing cryogenic liquid including a storage tank in which a supply source of the cryogenic liquid is incorporated and a measuring chamber.SOLUTION: A liquid inlet line is communicated with a storage tank and a measuring chamber such that the measuring chamber receives cryogenic liquid from the storage tank. A measuring pipeline is communicated with the measuring chamber and includes a measuring element, a distribution line and a distribution valve. A stabilization column is positioned in the measuring chamber and includes an opening separated in the vertical direction. First and second pressure sensors separated in the vertical direction are communicated with an inner part of the stabilization column. A controller is communicated with the measuring element, the first and second pressure sensors and the distribution valve.
Abstract:
PROBLEM TO BE SOLVED: To provide an interlock for preventing leakage by controlling the flow of an extremely low temperature fluid in an extremely low temperature fluid system carrying in the extremely low temperature fluid from a distributing vehicle and force-feeding the extremely low temperature fluid into a storage tank. SOLUTION: This interlock comprises a pneumatic pressure relay, a pneumatic pressure line, and a pressure detection line. When a hose from a distributing truck is connected to a system, the pneumatic pressure line transfers pressurized air to the pneumatic pressure relay, and at the same time, the pressure detection line pressurizes the pneumatic pressure relay. The pneumatic pressure relay comprises a housing for forming a chamber having a piston with arc- shaped passage disposed therein. When the hose from the distributing truck is connected to the system, the pressure detection line detects a variation in pressure and pressurize the pneumatic relay. By this pressure, the piston of the pneumatic relay is displaced to match the arc-shaped passage of the relay to the pneumatic pressure valve so that the pressurized air can be moved to a pneumatic pressure valve in order to open the pneumatic pressure valve.
Abstract:
PROBLEM TO BE SOLVED: To provide a differential pressure gauge for cryogenic storage tanks to which an operator inputs dimensions of the tank, an orientation of the tank and a type of liquid stored in the tank within an apparatus. SOLUTION: A differential pressure sensor (30) supplies signals corresponding to a differential pressure. The gauge (40) calculates a volume of the liquid in real time by combining and using a formula in which information supplied by the operator is stored and characteristics of the liquid. The liquid volume can be displayed to the gauge itself, or can be transmitted to an external device (45) by a remote measurement method.
Abstract:
PROBLEM TO BE SOLVED: To provide a system for dispensing a cryogenic fluid including a bulk tank containing a supply of cryogenic fluid.SOLUTION: A heating circuit 30 includes an intermediate tank 32 and a heating device 34 and has an inlet in fluid communication with the bulk tank 10 and an outlet. A bypass junction 26 is positioned between the bulk tank and the inlet of the heating circuit. A bypass circuit has an inlet in fluid communication with the bypass junction and an outlet. A portion of cryogenic fluid from the bulk tank flows through the heating circuit and is warmed and a portion flows through the bypass circuit. A mixing junction 36 is in fluid communication with the outlets of the bypass circuit and the heating circuit so that warmed cryogenic fluid from the heating circuit is mixed with cryogenic fluid from the bypass circuit so that the cryogenic fluid is conditioned. A dispensing line 46 is in fluid communication with the mixing junction so that the conditioned cryogenic fluid may be dispensed. Warmed cryogenic fluid remaining in the heating circuit after dispensing is directed to the intermediate tank and used to warm cryogenic fluid directed through the heating circuit.
Abstract:
PROBLEM TO BE SOLVED: To provide a cryogenic dewar bottle having the selectable substantially uniform storage temperature. SOLUTION: This invention has an inside tank 44 surrounded by an outside shell 42, and is characterized by vacuously insulating a space 46 between these. For example, a pressure vessel 60 including a cryogenic liquid coolant such as liquid nitrogen, is at least partially arranged inside the dewar bottle 40 for cooling a coolant. The pressure vessel 60 is pressurized so that the temperature of a cryogenic liquid can be controlled. A cooler and a temperature or pressure sensor communicate with the cryogenic liquid in the pressure vessel 60. When the sensor detects that the temperature of the cryogenic liquid is warmed by exceeding a predetermined level, the cooler is automatically operated for cooling the cryogenic liquid in the pressure vessel 60. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a cryogenic pump system capable of actuating under a wide range of liquid supply conditions. SOLUTION: This invention relates to a high pressure pump and a supply system mating to LNG storage, and suitable for a natural gas powered truck and bus, but also suitable for other cryogenic liquid fuel. A reciprocating pump is constituted with a liquid pumping portion 11 and a vapor compressing portion 12, operating in concert so that it is possible to locate the pump above a source of saturated LNG and to surely supply high pressure LNG. The supply system provides a method of utilizing both the pumped LNG and the compressed NG in a diesel type fuel injection system, and also to scavenge NG vapor from a LNG storage container so as to extend it's storage life. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a differential pressure gauge which an operator inputs onboard tank dimensions, tank orientation, stratification coefficient and the type of liquid stored within the tank. SOLUTION: A differential pressure sensor supplies a signal corresponding to a differential pressure. A pressure sensor supplies a signal corresponding to the head pressure. The gauge uses the information supplied by an operator, combined with stored formulas and liquid characteristics, to perform real-time liquid volume computations. The liquid volume man be displayed on the gauge itself or may be transmitted via telemetry to an external device.