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Study on Inlet Area and the Height of Curtain in the Operating Room

Author: LiYongPan
Tutor: LingJiHong
School: Tianjin University
Course: Thermal Power Engineering
Keywords: Operating Room Curtain Anti-interference Residual Particles Deposition Particles
CLC: TU831.8
Type: Master's thesis
Year: 2010
Downloads: 17
Quote: 0
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Abstract


Currently the air cleaning technology has been widely used in hospital air conditioning system, as an effective technology reducing nosocomial infection rate, it has been paid more attention by related sectors. Also there are many research results about how to make air cleaning technology more efficient working for hospitals clean zone. For vertical laminar flow clean operating room, usually set curtain around inlet panel to take advantage of clean air which flow through HEPA filter to prevent contaminated air from invading into the surgical site, then we can get much high cleanness around surgical site. In this paper, we choose the best laminar panel area and research the impact of air control in different height of curtain in operating room by experimental study and numerical simulation.In the experiment, we keep the aerosol particles concentration at 10~6pcs/pt~3, in the condition which supply without curtain and the curtain height of 400mm, we use two particle counters to sample the particle concentration in surrounding area and center area at the same time in operating room. The results show that, when the concentration of particle source is stable, the curtain height at 400mm is better than no curtain situation at anti-interference ability and self-purification ability.After the numerical model about operating room have been set up, we compared the results of numerical simulation and the experimental data, it’s suggested that numerical model basically tallies with the actual model. In the numerical simulation, firstly we research different inlet area of the operating room; the results show that when the air-flow at 8000m3/h, the air supply area between 3.0m×3.0m and 3.2m×3.2m has better purification effects then others. Secondly, study the impact of different curtain height and air velocity on air distribution when air supply area is 3.0m×3.0m. The results show that the increasing height of curtain can reduce the eddy zones, the number of residual particles in theater is reducing, the indoor discharge efficiency is increasing and particles number which deposition in operating site is also reducing. By contrasting the results which air supply velocity at 0.30m/s with 0.35m/s,we find that there is no significant effect on reducing particles which deposited on surgical site.

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning > A variety of housing air-conditioning
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