Paper Conference

Proceedings of ASim Conference 2012: 1st Asia conference of IBPSA-China, Japan, Korea


Study on window operation advisor for efficient cross ventilation use

Yasumasa Ishihara, Tatsuo Nagai

Abstract: The summer climate in Japan is hot and humid, and natural ventilation has long been used for cooling in individual homes. However, there has been a recent trend for families to measure the heat using air conditioning rather than natural ventilation. Although the use of an air conditioner can easily create a comfortable thermal environment, various problems exist with dependence on air conditioning. Therefore, we thought that we could solve these problems by natural ventilation and developed the “Window operation advisor.” This device encourages residents to make appropriate use of natural ventilation and air conditioning. We examined the most effective method for giving a resident advice on opening and closing windows by using a monitoring experiment, simulation, and experiment imitating the behavior of the residents in an experimental house. We confirmed that the air conditioner use time and air conditioner heat load were reduced by increasing the time that windows were open. In addition, there was a problem with a rise in room temperature with open windows, but we were able to solve it by comparing the quantity of cooling of the natural ventilation with the air conditioner. These examinations showed the effectiveness of using natural ventilation and the usefulness of the developed Window operation advisor.
Pages: 402 - 409