Trombe wall efficiency in ventilation improvement in Phnom Penh row house by numerical modelling

สมรรถนะผนังแบบทรอมบ์ในการปรับปรุงการระบายอากาศในตึกแถวของพนมเปญโดยโปรแกรมพลศาสตร์ของไหลเชิงคณนา

Name: Chhorvy Khat

ThaSH: Buildings -- Ventilation

Classification :.DDC: 721.2

ThaSH: Fluid dynamics

ThaSH: Architecture

Abstract: This thesis studies about the application of passive design by Trombe wall system to enhance indoor ventilation of Phnom Penh row house. The system is designed next to a stair block wall on top floor of the house. The current work is investigating two groups of experiments by using CFD program as simulation tool. First, it is studied about the performance of trombe wall by simulation on a top stair chamber model. The results indicated that from heat flux 200W/m² to 1000W/m² highest mass flow rate was approximately varies from 0.06Kg/s to 0.115Kg/s, and average air velocity were from 0.14m/s to 0.28m/s, respectively. The highest air velocity in channel happened near the glass surface of Trombe wall in value of 0.89m/s at steady state. Due to the gotten velocity at inlet of Trombe wall, comfort zone can be reached from heat flux 600W/m² up. Second, the work takes noticed about the effect of Trombe wall on living room and kitchen at ground floor area of row house in Phnom Penh. There are 5 cases: existing house without Trombe wall (NTW); whole house designed with Trombe wall by heat flux 200W/m² (TW200W/m²) and 1000W/m² (TW1000W/m²); existing house with 45o C heat added up on top chamber (HC-NTW); and whole house with Trombe wall by adding up 45o C heat on top chamber (HC-TW1000W/m²). The result of this group could be assumed that the installation of Trombe wall on the top of stair block would neither influence air flow from ground floor nor achieve comfort zone. Matters affect the result are size (length and width) of the system, distance from Trombe wall to target room, and the volume of target room. For all cases, the approximately air velocity gotten at living room is in average from 0.12m/s to 0.16m/s with the increasing of room temperature 3o C to 4o C caused from the ambient temperature by the blowing-in wind. Anyway, there were mostly uninfluenced of air velocity and temperature from front house opening to kitchen. Furthermore, the existing outlet produced a greater amount of mass flow rate than the design with Trombe wall, due to the resistance of flow in channel. In conclusion, even if the stand alone of Trombe wall experiment could achieve air velocity of comfort, however this technique cannot satisfy the need of comfort standard for living room and kitchen on ground floor area of the house.

Chiang Mai University Library

Address: CHIANG MAI

Email: cmulibref@cmu.ac.th

Name: Chanawat Nitatwichit

Role: Chairman

Name: Angunthip Srisuwan

Role: Member

Name: Yottana Khunatorn

Role: Member

Created: 2015

Modified: 2017-09-21

Issued: 2017-09-21

CallNumber: Th 721.2 C531T

eng

DegreeName: Master of Architecture

Level: ปริญญาโท

Descipline: Architecture

Grantor: มหาวิทยาลัยเชียงใหม่

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