成果報告書詳細
管理番号20120000000653
タイトル*平成23年度分中間年報 「高効率ノンフロン型空調機器技術の開発 冷媒の性能,安全性評価 業務用空調機器に適した低GWP冷媒の探求とその安全性,物性および性能評価
公開日2012/6/13
報告書年度2011 - 2011
委託先名国立大学法人九州大学
プロジェクト番号P11008
部署名環境部
和文要約和文要約等以下本編抜粋:
1. 研究開発の内容及び成果等
1 HFO-1234ze(Z)の基本物性およびサイクル性能に関する研究
(a) HFO-1234ze(Z)の化学的性質の調査
HFO-1234ze(Z)の樹脂,ゴム及び金属への影響を評価するための試験を以下のように実施した.
ポリ塩化ビニル(硬質),ポリ塩化ビニル(軟質),ポリエチレン(高圧),ポリエチレン(低
圧),ポリプロピレン,ポリスチレン,アクリル樹脂およびノリル樹脂を試験対象樹脂として選
定した.試験対象樹脂はSUS316 製耐圧管に封入されたHFO-1234ze(Z)(封入量:52g)の液中に
50℃で5 日間浸漬した後,その重量変化率および体積変化率を算出して影響を評価した。
英文要約(1) Research on the basic property and cycle performance of HFO-1234ze (Z)
(a) Investigation of chemical characteristics of HFO-1234ze (Z)
The examination for evaluating the chemical influence of HFO-1234ze(Z) on some kinds of resins, rubbers, and metals.
  Seven kinds of resin and seven kinds of rubber were tested. Test materials were immersed for five days at 50 oC into liquid of HFO-1234ze (Z) in SUS316 pipes, and then the weight change and the volume change were measured. The examination of the stability of HFO-1234ze(Z) under metal coexistence and metal corrosiveness were also carried out.
(b) Measurement of thermodynamic properties of HFO-1234ze (Z)
  Nineteen vapor-pressure data of HFO1234ze(Z) were obtained in the temperature range from 310 K to 420 K, and in the pressure range from 268 kPa to 3328 kPa. Moreover, PvT properties of HFO-1234ze(Z) were also measured in the range of temperatures between 310 K and 440 K and of pressures between 106 kPa and 6027 kPa.
(c) Measurement of transport properties of HFO-1234ze (Z)
  By using the transient hot wire method, thermal conductivity of saturated liquid of HFO-1234ze(E) have been measured in the condition of saturated temperature from 10 oC to 80 oC. In order to confirm the repeatability and reliability of the measurements, the thermal conductivity of saturated liquid of R1234ze(E) is also measured. A new experimental apparatus was manufactured in order to measure the viscosity of HFO-1234ze(Z).
(e) Evaluation of the basic characteristics of the cycle of HFO-1234ze (Z)
  A model for cycle simulation where the heat transfer and pressure drop are considered has been established.
(2) The pursuit of low GWP refrigerant mixture and research on its basic properties and cycle performance
(a) Pursuit and selection of low GWP refrigerant mixture
  As for the HFO-1234ze(E) + HFC-32 mixture, the measurements of PvT properties, critical parameters, saturation densities, and specific heat capacities have been completed.
  The thermodynamic cycle performance analysis was conducted for a ternary system composed of HFO-1234ze(E), HFC-32 and CO2. The Composition of the ternary system was selected so that the following conditions were satisfied: the value of GWP is 300 or less, the temperature difference of the dew and the boiling points is below 10 K, and the COP value and volumetric capability of the ternary system are equivalent to the R410A system.
(d) Measurement of heat transfer characteristics of low GWP refrigerant
  The heat transfer and the pressure loss characteristics of HFO-1234ze (E) and HFC-32 condensing or evaporating inside a horizontal micro-fin tube were measured. The heat transfer and the pressure loss characteristics of HFO-1234ze (E) and HFC-32 mixtures condensing inside a multi-port tube were also measured.
(e) Evaluation of the basic characteristics and cycle performance of low GWP refrigerant
  A cycle model for low GWP refrigerant mixture of HFO-1234ze(E) and HFC-32 has been established. The cycle analysis has been carried out and basic characteristics of the low GWP refrigerant mixture have been clarified.
  The drop-in experiment of binary mixture of HFO-1234ze(E) and HFC-32 were conducted prior to the experiment of the ternary mixture of HFO-1234ze(E), HFC-32 and CO2.
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