Explaining the mechanical design of the middle space in the Bazar Markazi of Mashhad in order to reduce energy consumption and increase the thermal comfort of the audience.

Document Type : Original Article

Authors
ehsan kafash 1
seyyed mahdi madahi 2
iman mirshojaeeian 3
1 Architecture, Shahid Montazeri Faculty, Technical University, Mashhad, Iran
2 architecture, khavaran faculty, mashhad, iran
3 architecture, ferdows faculty, mashhad, iran
10.22034/stme.2023.385567.1029
Abstract
In the fire extinguishing system of large buildings in the winter season, preventing of the water from freezing inside the sprinkler system is an important issue. For this purpose, the dry pipe sprinkler system is being used. In this method, instead of water, there is air inside the system, and during a fire, a pressure drop is created when the sprinkler bulb bursts, and water is injected into the pipes by using the firefighting pumping system, and it must reach the most remote sprinkler in the minimum time. In this numerical study, by using of Ansys Fluent software, and changing the sprinkler structure and the water outlet nozzle with different angles, the duration of water discharge is investigated. The results show that adding the convergence angle of the nozzle of the sprinkler’s outlet has increased the velocity of the air flow at the outlet of the nozzle, which has reduced the time for water to reach the the most remote sprinkler 0f the system is also reduced.
Keywords
Dry pipe Sprinkler
Convergent-Divergent nozzle
Convergence-Divergence Angle
Supersonic flow
Subjects
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  • Receive Date 13 February 2023
  • Revise Date 10 June 2023
  • Accept Date 20 June 2023
  • First Publish Date 22 June 2023
  • Publish Date 22 June 2023