Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Masaya Honma

Osao Kido

Hiroki Hayashi

Hiroshi Hasegawa

Tomoichiro Tamura

Atsuo Okaichi

Takumi Hikichi

Osamu Kosuda

Masanobu Wada

Kou Komori

Yuuichi Yakumaru

Yuichi Yakumaru

Tetsuya Saito

Susumu Kobayasi

Hidetoshi Taguchi

Yoshitsugu Nishiyama

Osamu Ogawa

Fumitoshi Nishiwaki

Katsuji Taniguchi

Toru Sukawa

Kazuhiro Taniguchi

Yoshikimi Tatsumu

Masanobu Hirota

Kenji Nagoshi

Shuhei Ohtsubo

Shoichi Yokoyama

A first thrust bearing includes a first electromagnet and a first member. A second thrust bearing includes a second electromagnet and a second member. A magnetic force generated by the first electromagnet and the second electromagnet, and dynamic gas pressure generated by the first member and the second member due to rotation of a rotating shaft support an axial load of the rotating shaft.

Bearing structure

A gas turbine rotor includes a first rotor and a second rotor. The first rotor includes a compressor impeller, a turbine wheel, and a shaft. The turbine wheel has a common rotational axis with the compressor impeller. The shaft connects the compressor impeller to the turbine wheel. The second rotor is an electric generator rotor and defines an inner hollow space. The shaft includes an insertable portion disposed in the inner hollow space of the second rotor.

Gas turbine rotor and gas turbine generator

A Rankine cycle apparatus includes a pump, an evaporator, an expander, a condenser, and an internal heat exchanger. The internal heat exchanger allows heat exchange to take place between a working fluid discharged from the expander and a working fluid discharged from the pump. A temperature of the working fluid at an inlet of the expander is set so that a temperature of the working fluid at an outlet of the expander be higher than a saturation temperature on a high-pressure side of the cycle.

Rankine cycle apparatus, combined heat and power system, and rankine cycle apparatus operation method

A fin satisfies 0&#xb0;&#x3c;&#x3b8;&#x3c;tan[(L&#xb1;&#x3b1;)/{(S&#x2212;D)/2&#x2212;L/tan&#x3b8;}], where Sis a distance between an upstream end and a downstream end of a first inclined portion, Dis a distance between an upstream end and a downstream end of a flat portion, &#x3b8;is an angle between a reference plane and the first inclined portion in the flow direction, &#x3b8;is an angle between the reference plane and the second inclined portion in the flow direction, &#x3b1; is a distance between the reference plane and the flat portion, and L is a distance between the reference planes of the fins adjacent to each other. &#x3b8;gradually decreases as a measurement direction of the angle is shifted from the row direction to the air flow direction and is minimum when the measurement direction is orientated in the air flow direction.

Fin tube heat exchanger

A CHP system includes a combustor (heat source), a Rankine cycle apparatus, and a second heat exchanger. The Rankine cycle apparatus includes, as an evaporator, a first heat exchanger that absorbs thermal energy produced in the combustor. The second heat exchanger is located farther from the combustor than is the evaporator, is in direct contact with the evaporator or in indirect contact with the evaporator via a thermally-conductive member, absorbs thermal energy produced in the combustor, and transfers the thermal energy to a heat medium.

Combined heat and power system

A Rankine cycle apparatus (A) of the present disclosure includes a main circuit (), a heat exchange portion (HX), a bypass flow path (), a flow rate-adjusting mechanism (), and a pair of temperature sensors (A). The main circuit () is formed by an expander (), a condenser (), a pump (), and an evaporator () that are circularly connected in this order. The heat exchange portion (HX) is located in the main circuit () at a position between an outlet of the expander () and an inlet of the pump (). The bypass flow path () branches from the main circuit () at a position between an outlet of the evaporator () and an inlet of the expander (), and joins to the main circuit () at a position between the outlet of the expander () and an inlet of the heat exchange portion (HX). The flow rate-adjusting mechanism () adjusts the flow rate of the working fluid in the bypass flow path (). The pair of temperature sensors (A) detects temperatures of the working fluid at two positions spaced from each other in a flow direction of the working fluid.

Rankine cycle apparatus

A Rankine cycle apparatus includes a pump, an evaporator, an expander, and a condenser. The evaporator has a plurality of heat transfer tubes arranged in rows in a flow direction of a high-temperature fluid to be heat-exchanged with a working fluid. The heat transfer tube located in a most upstream row in the flow direction of the high-temperature fluid is defined as a most upstream heat transfer tube. For example, the most upstream heat transfer tube forms an inlet of the evaporator so that the working fluid flows into the evaporator through the inlet and first passes through the most upstream heat transfer tube.

Rankine cycle apparatus and combined heat and power system

A refrigeration cycle apparatus () includes: a main refrigerant circuit () having a compressor (), a radiator (), a first expansion mechanism (), a second expansion mechanism (), and an evaporator (); an injection passage () for supplying an intermediate-pressure refrigerant to an injection portof the compressor; and a water circuit () through which water to be heated in the radiator () flows. The refrigeration cycle apparatus () includes a sub heat exchanger () for cooling the water in the water circuit () by exchanging heat between the refrigerant in the injection passage () and the water to be heated in the radiator ().

Refrigerant circuit

A heat pump hot-water supply system includes a heat pump hot-water supply device, an electricity storage device, and a control device. The control device determines an operating time zone of the heat pump hot-water supply device based on power conversion efficiency of the electricity storage device, coefficients of performance of the heat pump hot-water supply device of a current day and a next day, and an electricity rate structure of a commercial power system.

Heat pump hot-water supply system

A grid-connected power supply system includes a power generation apparatus configured to generate power by using natural energy and connected in parallel to a commercial power grid; a electricity storage device; and a control device configured. The control device predicts an amount of power to be generated on a subsequent day by the power generation apparatus and a power demand of the loads and charges the electricity storage device with power in a time zone in which an electricity rate of the commercial power grid is relatively low if a predicted value of the amount of power to be generated is lower than a predicted value of the power demand, or does not charge the electricity storage device with power during the time zone if the predicted value of the amount of power to be generated is not lower than the predicted value of the power demand.

Grid-connected power supply system

An electricity generation unitA includes a combustor, a heater, and a Rankine cycle circuit. The combustorcombusts a solid fuel. A combustion gas generated in the combustorpasses through a flue. The heatercontains a heat storage material, and heats the heat storage material by allowing heat exchange to take place between the combustion gas in the flueand the heat storage material. The Rankine cycle circuithas an evaporatorthat evaporates a working fluid in the Rankine cycle by allowing heat exchange to take place between the heat storage material heated in the heaterand the working fluid. With this configuration, stable operation of an electricity generation unit using a combustion gas of a solid fuel is achieved.

Electricity generation unit and cogeneration system

A heat pump hot-water supply system includes a heat pump hot-water supply device, a storage tank for storing hot water obtained by operating the heat pump hot-water supply device, and a control device for controlling starting/stopping of the heat pump hot-water supply device. The control device estimates an outside air temperature of a place where the heat pump hot-water supply device is installed and determines an operating time zone of the heat pump hot-water supply device based on an estimated value of the outside air temperature.

A refrigeration cycle apparatusincludes a first compressor, a second compressorprovided in parallel with the first compressor, a radiatorfor cooling a refrigerant compressed by the compressorsand, an expanderfor recovering power while expanding the refrigerant cooled by the radiator, an evaporatorfor evaporating the refrigerant expanded by the expander, a rotation shaftconnecting the first compressorto the expanderso that the first compressoruses the power recovered by the expander, a controllerfor executing a control including a step of increasing a flow rate of the refrigerant gradually during a defrosting operation in which frost formed on the evaporatoris melted by allowing the refrigerant having a high temperature to flow through the evaporator

Refrigeration cycle apparatus

In a heat pump apparatus of the invention, a refrigerant is circulated through a compressor, a radiator, a first throttle apparatus, a heat exchanger, a second throttle apparatusand an evaporatorin this order. The heat exchangercan be utilized as both a radiator and an evaporator by operating the first throttle apparatusand the second throttle apparatus. Therefore, even if the outside air temperature is high, discharge pressure and suction pressure of the compressor do not rise, the heat pump apparatus can be operated in a stable refrigeration cycle, and energy can be saved.

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Saitama, Japan

Masaya Honma