A study on a method for planning a water-saving toilet compatible drainage piping system

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289201
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Architectural environment/Equipment
• Research Institution: Kanto Gakuin University
• Principal Investigator: Otsuka Masayuki 関東学院大学, 建築・環境学部, 教授 (20288088)
• Co-Investigator(Kenkyū-buntansha): ENDO Tomoyuki 関東学院大学, 建築・環境学部, 准教授 (90385534)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 給排水衛生設備 / 節水形トイレ / 排水設備システム / 排水横管 / 搬送性能 / 搬送特性 / シミュレーション / CFD

Outline of Final Research Achievements

The following matters have been clarified, which contribute to planning and designing a piping system for a building drainage system with a water-saving toilet installed thereto, in terms of ensuring hygiene and safety. ① The prediction of carrying distances of waste, toilet paper, etc., in relation to the decline of carrying performance in the horizontal drainpipe, followed by the development of a simulation tool conducive to piping design support. ② The experimental evaluation of how a piping system affects the drainage performance of a drainage stack system, followed by the clarification of applicability of a water-saving toilet to the piping system. ③ The clarification of how the speed of external wind in the stack vent pipe (vent cap) and ventilation facilities affect the trap of the water-saving toilet.

Free Research Field

建築学