Study on Cool Storage System Using HCFC(Hydro Chloro Fluoro Carbon)-141b(CCl2FCH3) Clathrate.

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  • Tanii Tadaaki
    Takasago Research and Development Center, Mitsubishi Heavy Industries, LTD.
  • Minemoto Masaki
    Takasago Research and Development Center, Mitsubishi Heavy Industries, LTD.
  • Nakazawa Kuniyasu
    Takasago Machinery Works, Mitsubishi Heavy Industries, LTD.
  • Ando Yoshimasa
    Power System Headquarters, Mitsubishi Heavy Industries, LTD.

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  • ＨＣＦＣ（Ｈｙｄｒｏ　Ｃｈｌｏｒｏ　Ｆｌｕｏｒｏ　Ｃａｒｂｏｎ）‐１４１ｂ（ＣＣｌ２Ｆ・ＣＨ３）クラスレートを用いた蓄冷システム
  • HCFC Hydro Chloro Fluoro Carbon-141b CC

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Abstract

An experimental study was performed to obtain some design data for a cool storage system using HCFC-141 b clathrate.<BR>Experiments on investigating the possibility of using the clathrate storage system as an air condition for a building were performed. The clathrate can store energy of night excess power at a cool storage density and extract it as cool heat when the energy becomes necessary in the daytime. Commercial cool storage system using CFC (Chloro Fluoro carbon) -11 (CCl3F) clathrate have already been developed. But now, the usage of CFC-11 is strongly restricted from the stand point of global enviromental protection, hence an alternative medium for CFC-11 is necessary. In this study, HCFC-141 b was selected as an alternative medium. The formation tests for HCFC-141 b clathrate were carried out in order to obtain some design data for cool storage systems. The following conclusions were obtained : (1) a cool storage system using HCFC-141 b clathrate is a more effective heat storage system than ice ; (2) addition of 0.05 wt% surfactant allowed an ideal clathrate formation/decomposition up to 40 wt% of clathrate concentration ; and (3) addition of ethyleneglycol allowed the clathrate formation/decomposition temperature to decrease, resulting in the acquisition of more cooled water.

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