Mitsubishi Heavy Industries Limited

Pebble Bed Modular Reactor (pty) Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Pebble Bed Modular Reactor Limited

Hitoi Ono

Fuminori Fujii

Kenji Ueda

Makoto Kato

Minoru Matsuo

Takashi Sonoda

Eisuke Noda

Toshihiko Niinomi

Naoto Tochitani

Masahide Umaya

Shinsuke Nakamura

Kozo Toyama

Satoshi Hanada

Toshiharu Nakabayashi

A required-circulated-refrigerant flow-rate calculating portion provided in a chilled-water flow-rate estimation calculation portion calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity. Then, a circulated-chilled-water flow-rate back-calculating portion back-calculates an evaporator-refrigerant flow rate based on the calculated evaporator-refrigerant flow rate and a ratio between a set value of differential pressure between a condenser and the evaporator and a measured value of that differential pressure, back-calculates an evaporator exchanged heat quantity exchanged between the refrigerant and the chilled water at the evaporator from the back-calculated evaporator-refrigerant flow rate, and back-calculates the flow rate of the chilled water.

Estimation apparatus of heat transfer medium flow rate, heat source machine, and estimation method of heat transfer medium flow rate

A flow rate of a heat transfer medium is computed without a flow meter. In a control apparatus (), a storing portion () stores an aerodynamic characteristic map indicating a line causing a rotating stall and lines showing a sonic velocity in a refrigerant sucked in by a compressor () on a map displaying a variable &#x3b8; reflecting a suction volume of the compressor () and a variable &#x3a9; reflecting a head of the compressor (); a estimation portion of chilled water flow rate () computes the variable &#x3a9;, derives the variable &#x3b8; according to the variable &#x3a9; from the map, computes a heat amount exchanged between the refrigerant and the chilled water in an evaporator () based on the suction volume of the compressor () according to the computed variable &#x3b8;, and computes the flow rate of the chilled water based on the heat amount.

A numerical analysis device executes: Stepof selecting a fluidic device model and a pipe model used for transient analysis from among fluidic device models and pipe models that are located between a start point and an end point set in the pipeline network model constructed as a 3D model of a pipeline network that includes fluidic devices and pipes; Stepof dividing the selected fluidic device model and pipe model into volume elements and into junction elements; Stepof deriving volumes of the respective volume elements obtained and pressure loss coefficients corresponding to the respective junction elements, based on the shape of the fluidic device model, a shape of the pipe model, and a physical quantities of the fluid, of associating the volumes with the volume elements, and of associating the pressure loss coefficients with the junction elements.

Numerical analysis device, element generation program, and numerical analysis method

To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a speed accelerating step (S) of increasing a revolution number by driving to rotate a compressing portion and a turbine portion by a motor by way of a speed reducing portion, a load detecting step (S) of detecting a load applied to the speed reducing portion by a load detecting portion, and a bypass flow rate controlling step (S) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when an absolute value of the detected load is equal to or smaller than an absolute value of a predetermined value and reducing the flow rate of the bypassed working fluid when equal to or larger than the absolute value of the predetermined value.

Method of controlling turbine equipment and turbine equipment

To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a temperature elevating step (S) of elevating a temperature of a working fluid flowing to the turbine portion, a flow rate increasing step (S) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when a temperature of the working fluid flowing to the turbine portion is elevated by a heat source portion, and a flow rate reducing step (S) of reducing the flow rate of the bypassing working fluid after an elapse of a predetermined time period after increasing the flow rate of the bypassing working fluid.

A combustion temperature high speed detection device is provided with a phase lead processing portion, thereby canceling out a detection lag of a temperature detector, and detecting the combustion gas temperature of a combustor at a high speed. The combustion temperature high speed detection device is also provided with a first-order lag filtering portion with a time constant of 0.25 second, a phase lag processing portion with a time constant of 10 seconds, a temperature change filtering portion with a cutoff frequency of 2 to 3 Hz, and a disturbance filtering portion including first-order lag filtering portions with different time constants and a high value selecting portion. Thus, high speed detection of the combustion gas temperature more suitable for a gas turbine system can be performed.

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Tokyo, Japan

Hitoi Ono