Search Results 1-20 of 39

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  • Study of Scroll Compressor with Suction Chamber Injection  [in Japanese]

    岩竹 渉 , 河村 雷人 , 関屋 慎 , 佐々木 圭 , 髙村 祐司

    日本冷凍空調学会論文集 = Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 36(4), 181-188, 2019

  • Lubrication Analysis of Vane Top in Multiple Vane Type Compressors  [in Japanese]

    KUREHA Eita , MURAKI Masayoshi

    … Of the parameters used for calculation of the oil film thickness, the viscosity of the mixture in which the refrigerant is dissolved in oil and the boundary friction coefficient at the vane-slot part were experimentally obtained, and the force from the back-part of the vane and the action force from the gas pressure inside the compression chamber were obtained based on the theory. …

    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS 64(12), 747-758, 2019

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  • Dynamics Analysis of Swing Piston Rotary Compressor  [in Japanese]

    SAWAI Kiyoshi , DOI Manabu , ISHII Noriaki , NAKAI Hiroaki , MORIMOTO Takashi

    … By limiting piston rotation, heat transfer to the suction process from the compression chamber will be suppressed, and we can expect higher volumetric efficiency. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 33(2), 93-104, 2016

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  • Study on New Oil Supply Mechanism to Compression Chamber of Scroll Compressor  [in Japanese]

    近野 雅嗣 , 柳瀬 裕一 , 松永 睦憲 [他]

    日本冷凍空調学会論文集 = Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 32(2), 175-182, 2015

  • Research and Development of Packaged Air-conditioners Intended to Improve Annual Efficiency:-2nd Report: Proof Experiment for Performance of Developed Packaged Air-conditioner-  [in Japanese]

    YOSHIDA Yasutaka , NAGANO Katsunori , KOYAMA Masaki , TOKUSA Kenji

    … this developed packaged air-conditioner, we tested and proved that <br>(i) the annual efficiency of the system was 1.51 times compared with that of the conventional one in a thermostatic chamber, <br>(ii) the efficiency for actual use was 1.58 times for the collaboratory of Hokkaido University in Sapporo and 1.67 times for the CAE room of Hitachi Appliances, Inc. in Shizuoka at ambient temperature in 2012, and <br>(iii) by revising the data the efficiency for actual use was 1.55 times for a common office in Tokyo at normal ambient …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 32(3), 207-219, 2015

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  • Study on New Oil Supply Mechanism to Compression Chamber of Scroll Compressor  [in Japanese]

    CHIKANO Masatsugu , YANAGASE Yuichi , MATSUNAGA Mutsunori , NAKAMURA Satoshi , OHTAHARA Masaru

    … In this paper, the relationship between the amount of oil supply to compression chamber and the compressor efficiency is reported. … As a result, we improved APF by optimizing the amount of oil supply to compression chamber with combination of the oil pocket structure and the slit structure. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 32(2), 175-182, 2015

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  • Effects of Increased Relative Humidity on Growth, Photosynthetic Rate and Nutrient Uptake in Young Cucumber Plants under High-concentration Carbon Dioxide Conditions  [in Japanese]

    SUZUKI Mami , MATSUO Seiji , UMEDA Hiroki , IWASAKI Yasunaga

    … Thus, dry matter production and relative growth rate (RGR) were largest when seedlings were grown in the level 2 chamber. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 31(3), 331-337, 2014

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  • Impact of a new refrigerator on the preservation of hepatic grafts

    KANAMOTO Mami , SHIMADA Mitsuo , UTSUNOMIYA Tohru , IMURA Satoru , MORINE Yuji , IKEMOTO Tetsuya , MORI Hiroki , HANAOKA Jun

    Hepatology research : the official journal of the Japan Society of Hepatology 42(8), 798-805, 2012-08-01

    Ichushi Web  References (29)

  • Effect of Sublimation of Ice on Evaporation Phenomenon of Ethanol Solution

    ASAOKA Tatsunori , OKADA Masashi , AIDA Kazuki

    … In the experiment, the ethanol concentration of vapor in ice producing chamber was measured under the various conditions. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 28(1), 63-70, 2011

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  • Experimental Study of High Efficiency CO<sub>2</sub> Scroll Compressor with a Control of Oil Flow to Compression Chambers  [in Japanese]

    SAWAI Kiyoshi , HIWATA Akira , FUTAGAMI Yoshiyuki , IIDA Noboru , MORIMOTO Takashi , ISHII Noriaki

    … scroll compressor, where the relationship between the oil flow rate to the compression chamber and the corresponding performance was investigated in detail. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 26(4), 429-437, 2009

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  • Real-Time Measurement of Oil Circulation Ratio in CO<Sub>2</Sub> Heat Pump System Using Optical Method  [in Japanese]

    TAKIGAWA Ryusuke , SHIMIZU Takao , MATSUSAKA Yukio , GAO Lei , HONDA Tomohiro

    … In order to measure the OCR (Oil circulation ratio), a mixing chamber and a visual vessel were installed at the outlet of the gas-cooler. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 26(2), 167-172, 2009

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  • A New Freezing Method Using Pre-Dehydration by Microwave-Vacuum Drying  [in Japanese]

    TSURUTA Takaharu , HAMIDI Nurkholis

    … The tuna were cooled by using the freezing chamber at temperature -50°C or -150°C, while the strawberries were frozen at temperature -30°C or -80°C, respectively. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 25(3), 291-298, 2008

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  • Experimental Study on Efficiency Improvement of R410A Scroll Compressor for Air Conditioner : 1st Report : Performance Improvement by Oil-injection into Compression Chamber  [in Japanese]

    SAWAI Kiyoshi , SAKUDA Atsushi , IIDA Noboru , HIWATA Akira , MORIMOTO Takashi , ISHII Noriaki

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 24(3), 265-272, 2007-09-30

    References (13) Cited by (2)

  • Analytical Model for Starting Characteristics of Vane Compressor  [in Japanese]

    OSAWA Yusuke , FUKUTA Mitsuhiro , YANAGISAWA Tadashi

    … Vane type compressors pressurize a back-pressure chamber of the vane with discharge pressure to keep a contact between a vane tip and a stator wall in a steady-state operation. … It is found that when the vane back-pressure becomes less than the suction pressure by a volume increase of the vane back-pressure chamber, the vane hardly comes out from the vane slot, because a negative force caused by the pressure difference is dominant to the vane behavior during the start-up operation. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 24(3), 291-302, 2007

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  • Experimental Study on Efficiency Improvement of R410A Scroll Compressor for Air Conditioner:1st Report :Performance Improvement by Oil-injection into Compression Chamber  [in Japanese]

    SAWAI Kiyoshi , SAKUDA Atsushi , IIDA Noboru , HIWATA Akira , MORIMOTO Takashi , ISHII Noriaki

    … In scroll compressors, an increase in oil flow rate into thecompression chamber improves sealing effectsand decreases refrigerant leakage. … In the present study, we made an apparatus which suppliesthe oil into the compression chamber while measuring the mass flow rate, thus investigating the relationshipbetween the oil flow rate and the compressor performance. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 24(3), 265-272, 2007

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  • Oil Leakage from the Seal Ring of a Scroll Compressor  [in Japanese]

    KOBAYASHI Naoki , FUKUI Atsushi , HORIGUCHI Hironori , TSUJIMOTO Yoshinobu , TOYAMA Toshiyuki

    … In scroll compressors for air conditioners, there is a compressor with back-pressure chamber spaced by seal ring behind orbiting scroll. … High pressure in the backpressure chamber presses the orbiting scroll to fixed scroll. … In the case that lubrication oil and refrigerant gas with high pressure and temperature in the backpressure chamber leak to low pressure chamber through the seal ring, the efficiency of compressor decreases and the oil circulation rate can increase. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 22(4), 395-402, 2005

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  • Vane Back-Pressure of Vane Type Compressors and Its Mathematical Model  [in Japanese]

    FUKUTA Mitsuhiro , YANAGISAWA Tadashi , IJIRI Makoto , YODA Seiichiro

    … Vane type compressors pressurize a back-pressure chamber of the vane to keep a contact between a vane tip and a stator wall. … It is important to apply appropriate pressure to the back-pressure chamber in order to prevent the excessive friction at the vane tip or the chattering phenomenon. … In this study, the back-pressure is measured with visualizing a plate groove to which the back-pressure chamber is connected. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 20(3), 375-385, 2003

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  • Studies on a Pressurized Type Underfloor Air-Conditioning System (1th Report : Analysis of Controlled Factors for Uniform Air Velocity Profile)  [in Japanese]

    TAKAHASHI Atsushi , KONG Nam Chol , NAKATANI Hiroshi , OHWASE Seiji

    … However, it is known that the lower the design of the air supply chamber, the larger the non-uniformity of the supplied air velocity at each diffuser and the greater the deterioration in room temperature distribution. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 13(2), 133-141, 1996-07-31

    J-STAGE  References (9)

  • A Dynamic Model of a Vapor Compression Refrigeration Cycle  [in Japanese]

    YASUDA Hiromu , YANAGISAWA Tetsuji , IZUSHI Minetoshi

    … A dynamic model of a vapor compression refrigeration cycle composed of a compressor with a high-pressure chamber, cross finned heat exchangers, an expansion valve and pipes is developed. … One operation is called "hot-start", which means starting-up from a high temperature in the compressor chamber. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 11(3), 263-275, 1994

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  • Noise Reduction Analysis on Inverter Driven Two-Cylinder Rotary Compressor  [in Japanese]

    NONAKA Ryutaro , SUDA Akihiro , MATUMOTO Kenzou

    … Two-cylinder rotary compressor is dynamically balanced well because two rollers in each cylinder chamber are located in opposite sides. … In conclusion, Countermeasures for resonance in cavities were achieved by reducing 630Hz∼1KHz levels and the effect of muffler in the chamber contributed to the reduction of 3KHz∼6KHz levels. …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 10(2), 309-317, 1993

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