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The simulation of the leaking distribution characteristics of R290 household air conditioner.

Number: pap. ID58

Author(s) : CAI D., HE G., TANG W., et al.

Summary

As a substitution for current refrigerant, R290 is low-cost, energy-saving, and environmentally-friendly,but there is a potential hazard of blasting when it leaks. We use CFD technology to simulate R290’s proliferation and its concentration distribution after the leakage occurs in 3 rooms of different sizes,and assume all of the leaking times in these 3 rooms are 240 seconds. Simulation indicates that the concentration of the space centered at the middle of leaking port with the a radius of 0.2m from the leaking port down to the floor is relatively high, and exist potential risk of blasting, but in 10 seconds after the leakage, the highest R290 concentration falls under the lower limit of propane’s flammability limits. Results also show the side wall beneath leaking port, the floor and the corner tends to gather more R290, and larger room is more favorable for R290’s dilution proliferation. Our simulation results confirm the feasibility of R290 being used as air-conditioner refrigerant, and also has a significance of guidance for the safe use of R290 domestic air-conditioner.

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Pages: 13 p.

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Details

  • Original title: The simulation of the leaking distribution characteristics of R290 household air conditioner.
  • Record ID : 30012374
  • Languages: English
  • Source: 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
  • Publication date: 2014/08/02

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