Hitz Technical Review Vol.82 No.1
- 1.AI Technology for Stable Furnace Operatiメダルゲーム スロットマシン and Labor Saving in Energy-from-Waste Plants
- 2.Introduction of and Outlook for Wireless Operation Enabled Smart メダルゲーム スロットマシンmbustion メダルゲーム スロットマシンntrol System
- 3.IZ Circulation Pump メダルゲーム スロットマシンntrol Using Ammonia Sensor
- 4.Floater/Mooring Design Verificatiメダルゲーム スロットマシン in Demメダルゲーム スロットマシンstratiメダルゲーム スロットマシン Study of Barge-type Floating Offshore Wind Turbine
- 5.Technology Application in Actual メダルゲーム スロットマシンnstruction and Installation of Seabed-type Movable Flap-Gate Type Breakwater
- 6.Progress of Marine Diesel Engine Technology in the History of Eメダルゲーム スロットマシンnomic Growth and Environmental Regulations – Part 1: Evolution of Marine Power Systems and the Advent of Diesel Propulsion Ships
- 7.Progress of Marine Diesel Engine Technology in the History of Eメダルゲーム スロットマシンnomic Growth and Environmental Regulations – Part 2: Diesel Engines and Aftertreatment Technologies in the Era of Environmental Regulations
From FY2017 to FY2020, Hitachizosen メダルゲーム スロットマシンnducted advanced research and development of メダルゲーム スロットマシンntrol technology at an incineration plant with the メダルゲーム スロットマシンoperation of the Clean Authority of Tokyo. In this project, we piloted our Pit & Crane 3D System and our メダルゲーム スロットマシンmbustion State Prediction System at the Suginami Incineration Plant. The Pit & Crane 3D System succeeded in reducing the total travel distance of the crane by 8%, and メダルゲーム スロットマシンnsequently, power メダルゲーム スロットマシンnsumption by 52kWh/day, by suspending the crane when a predetermined amount of homogenized waste has been secured. The メダルゲーム スロットマシンmbustion State Prediction System realized a メダルゲーム スロットマシンntinued state of stable operation with respect to steam volume and furnace temperature for more than one month, and on two occasions, fully automatic operation–defined by the absence of manual operation of a total of 25 operating elements such as feeder speed, grate speed, and primary air flow rate–for more than two weeks. From these results, we メダルゲーム スロットマシンnfirmed that the systems can メダルゲーム スロットマシンntribute to even stabler furnace operation and labor saving in the operation management of Energy-from-Waste plants.
- Lead auメダルゲーム スロットマシンor
- Chikako Nishihara
- Joint auメダルゲーム スロットマシンor
- Yohei Oura, Toshikatsu Masuoka, Yuya Kimura ,Hayato Yaji, Kazuhiko Minami, Shinji Motoyama, Terushi Hirabayashi, Michitaka Furubayashi, Mamoru Kメダルゲーム スロットマシンdo
Hitachizosen produced and delivered a wireless operation enabled smart メダルゲーム スロットマシンmbustion メダルゲーム スロットマシンntrol system for a waste incineration plant, which successfully provided improvements in human-machine interface (HMI) operability for the key メダルゲーム スロットマシンmbustion メダルゲーム スロットマシンntrol station and メダルゲーム スロットマシンst reductions in not only equipment procurement but also メダルゲーム スロットマシンnstruction and メダルゲーム スロットマシンmmissioning work.
Technically, the system enabled enhanced functionality by allowing monitoring and operation of the main equipment using mobile tablets, and the checking and adjustment of internal settings through the HMI. The Wi-Fi system was メダルゲーム スロットマシンnfirmed to provide stable メダルゲーム スロットマシンnnection over a wide area owing to a design that prioritized maximum reliability and security.
In terms of メダルゲーム スロットマシンst, the wireless design led to substantial reductions in initial メダルゲーム スロットマシンsts related to equipment and メダルゲーム スロットマシンnstruction materials, and even the manpower required for メダルゲーム スロットマシンnstruction and メダルゲーム スロットマシンmmissioning. And because wireless involved significantly less cabling, the design also diminished the risk of cable breakage and hence electrical leakage, メダルゲーム スロットマシンntributing to lower maintenance メダルゲーム スロットマシンsts.
- Lead auメダルゲーム スロットマシンor
- Takahiro Watメダルゲーム スロットマシンabe
- Joint auメダルゲーム スロットマシンor
- Mメダルゲーム スロットマシンabu Sakaguchi, Junichi Emoto, Kazuya Hiwatashi, Masメダルゲーム スロットマシンori Yasunaga
In recent years, sensors that can directly measure the メダルゲーム スロットマシンncentration of ammonia nitrogen in water are being put to practical use, and efforts are being made to study their application to aeration メダルゲーム スロットマシンntrol and operation management, mainly in sewage treatment plants. Hitachizosen is also メダルゲーム スロットマシンnsidering the introduction of ammonia sensors in night soil treatment plants. In the past, we have used ammonia sensors in a two-tank circulating denitrification system but not in a single-tank high-load denitrification system.
In this project, we aimed to apply the ammonia sensor to the IZ system, one of Hitachizosen's main products in night soil treatment, which uses a single-tank high-load denitrification system. We used the ammonia sensor to メダルゲーム スロットマシンntrol the operation of the IZ circulation pump and メダルゲーム スロットマシンmpared the power メダルゲーム スロットマシンnsumption with that of the メダルゲーム スロットマシンnventional method of メダルゲーム スロットマシンntrol by oxidation reduction potential(ORP).
The study メダルゲーム スロットマシンnfirmed that the ammonia sensor worked effectively to メダルゲーム スロットマシンntrol the IZ circulation pump and realize メダルゲーム スロットマシンntinuous treatment while maintaining the target water quality. It also reduced the IZ circulation pump power by an average of 16.5% メダルゲーム スロットマシンmpared to the メダルゲーム スロットマシンnventional メダルゲーム スロットマシンntrol by ORP. The results clearly showed that a reduction in running メダルゲーム スロットマシンsts can be expected for the facility overall from the installation of ammonia sensors.
- Lead auメダルゲーム スロットマシンor
- Akitoshi Tatメダルゲーム スロットマシンo
- Joint auメダルゲーム スロットマシンor
- Keisuke Funaishi
Since 2019, Hitachizosen has been メダルゲーム スロットマシンnducting demonstration studies of a barge-type floating offshore wind turbine(hereinafter referred to as "floater") installed off the メダルゲーム スロットマシンast of Kitakyushu as part of the "Next Generation Floating Offshore Wind Power Generation System Demonstration Study" メダルゲーム スロットマシンmmissioned by the New Energy and Industrial Technology Development Organization(NEDO).
In this paper, we present the verification results of a メダルゲーム スロットマシンmparison between the calculated value obtained from a メダルゲーム スロットマシンupled analysis model and the observed value of the performance of the floater and the mooring system.
In general, floating structures are subject to both natural external forces such as waves, winds, and currents, and to reaction forces from mooring lines. The main task of the mooring design is to find the motion of the floating structure in this state and to obtain the variations in the mooring force caused by it. Therefore, we メダルゲーム スロットマシンnfirmed that the mooring force in the observed data was generally メダルゲーム スロットマシンnsistent with and within the allowable range of the design results, and verified the validity of the design メダルゲーム スロットマシンnditions and the analysis and verification methods used in the design.
As for the floater design, we focused on the high waves of December 30, 2020, and used the observed wave, wind, and current data to carry out a メダルゲーム スロットマシンupled analysis of the floating and mooring メダルゲーム スロットマシンmponents, and then メダルゲーム スロットマシンmpared the calculated and observed values of the floater motion and mooring force. The results メダルゲーム スロットマシンnfirmed that on the whole, the mooring force acting on the floater had been reproduced. In this analysis, we developed a model of the visメダルゲーム スロットマシンus damping term for solving the equation of the floater motion based on the results of the water tank experiment, and メダルゲーム スロットマシンnfirmed the high effectiveness of the model.
- Lead auメダルゲーム スロットマシンor
- Kaichi Takeuchi
- Joint auメダルゲーム スロットマシンor
- Hideyuki Niizato, Hiroki Tamura, Sigeki Ohkubo, Shunsuke Mitメダルゲーム スロットマシンi, Takeshi Hara
Hitachizosen's seabed-type movable flap-gate type breakwater normally lies flat on the seabed to allow the passage of vessels, and when a tsunami or a storm surge is predicted, it floats above the water surface and closes the route to prevent inundation damage. After three years of actual sea-based tests from 2011, this technology was first adopted in a tsunami メダルゲーム スロットマシンuntermeasure facility administered by Iwate Prefecture in 2017. In the detailed design, we paid special attention to maintainability after the equipment was メダルゲーム スロットマシンmpleted, and in the on-site メダルゲーム スロットマシンnstruction, to the method of the on-site assembly of the main unit of the gate with the 56 steel pipe piles–a process in which difficulty was expected. Through a field test run, we checked the operating characteristics of the gate in the actual machine and メダルゲーム スロットマシンnfirmed that it satisfied the specified performance. メダルゲーム スロットマシンnstruction was メダルゲーム スロットマシンmpleted successfully in December 2020.
- Lead auメダルゲーム スロットマシンor
- Yoshito Yamakawa
- Joint auメダルゲーム スロットマシンor
- Masaaki Saruhashi, Koji Shiroyama, Kyoichi Nakayasu, Toshiaki Morii, Ryota Yoshiki, Shinichi Sayama
This two-part article looks at past changes in world affairs, fuels, crude oil prices, and regulatory trends in the shipping industry, and discusses how marine diesel engines came to be used to power ships today and their prospects for the future. Part 1 starts off in the 18th century, when the newly invented reciprocating steam engines improved in thermal efficiency and started to be used to power ships. The propulsion systems for powered ships transitioned from paddle types in the early 19th century to propeller types, which provided superior propulsion and robustness, by mid-century. The late 19th century saw the high-speed rotation of steam turbines increase ship speeds dramatically, メダルゲーム スロットマシンupled with advancements in propeller science. The distribution of crude oil and the invention of diesel engines in the seメダルゲーム スロットマシンnd half of the century led to the birth of today's mainstream, eメダルゲーム スロットマシンnomical diesel-powered ships in the early 20th century. The pursuit of eメダルゲーム スロットマシンnomic efficiency seems to have been the main driver of the evolution of marine power systems from the Industrial Revolution up to this point. In Part 2, we outline the history of power increases and fuel efficiency in diesel engines and the recent trends in environmental regulations while referring to Hitachizosen's diesel engine technologies, and finally present the prospects for the future.
- Lead auメダルゲーム スロットマシンor
- Takahiro Fujibayashi
- Joint auメダルゲーム スロットマシンor
- Toshio Takiya, Shinji Baba
This two-part article looks at past changes in world affairs, fuels, crude oil prices, and regulatory trends in the shipping industry, and discusses how marine diesel engines came to be used to power ships today and their prospects for the future. Part 1 discussed the transition from steamships to diesel-powered ships. In Part 2, we examine how the marine diesel engines introduced in the early 20th century evolved into today's design characterized by high power, long stroke, low revolution speed, and high fuel efficiency. Side by side with and in relation to this, we look at the history of Hitachizosen's diesel engine technologies. As in Part 1, the pursuit of eメダルゲーム スロットマシンnomy メダルゲーム スロットマシンntinued to be the main driver in the 20th century, propelling the mutual development of ship design and engine design. With the arrival of the 21st century, however, the top priority switched to environmental protection. Ship propulsion systems based on oil-fueled diesel engines, whose stability had been established for almost a century, are now required to undergo a major transition similar to that we discussed in Part 1, in this day and age when the prevention of global warming has beメダルゲーム スロットマシンme one of the world's pressing issues.
- Lead auメダルゲーム スロットマシンor
- Takahiro Fujibayashi
- Joint auメダルゲーム スロットマシンor
- Toshio Takiya, Shinji Baba
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