Qualitative analysis of the cooling load in the typical room under continuous and intermittent runnings of air-conditioning

The air-conditioning continuous running in the whole building is the most fundamental assumption to simplify the energy conservation design in the present research and practice, but the most of air-conditionings run intermittently in the partial space of the whole buildings. According to this contradiction, this study analyzes the cooling load rules of a typical room comparatively under intermittent and continuous running of air-conditioning and deeply explores the features on the composition and formation time of the cooling load under the air-conditioning intermittent running. Results show that for the cooling load composition, three additional parts, including the precooling load of indoor air and furniture, the cooling storage load of non-transparent external envelope and the heat transfer cooling load of internal envelope, must be considered under the air-conditioning intermittent running, compared to under the air-conditioning continuous running, so the transient cooling load under the air-conditioning intermittent running is more than that under the air-conditioning continuous running during the air-conditioning running period. For the cooling load formation time, more complex factors must be considered under air-conditioning intermittent running, compared to under the air-conditioning continuous running.