Study On Seasonal Energy Efficiency Ratio Of Residential Building

This thesis makes a test about influence which indoor temperature setting and air supply grade setting make on the energy efficiency of split type room air conditioner. It tests the air-conditioning energy efficiency of different indoor setting temperature in different outdoor dry-bulb temperature. Through arrangement analysis, it draw a conclusion that there are power function relationship between indoor setting temperature and the energy efficiency of split type room air conditioner, and energy efficiency of split type room air conditioner increase with the raise of indoor setting temperature. It also tests energy efficiency status after changing air supply grade at same or similar outdoor dry-bulb temperature and different indoor setting temperature. The relationship between air supply grade and energy efficiency is cycle air volume increase and energy efficiency raise and refrigeration speed improve.It makes a test about the influence of outdoor dry-bulb temperature, making on split type room air-conditioning energy efficiency. It tests the air-conditioning energy efficiency of different outdoor dry-bulb temperature in different indoor setting temperature. Through arrangement analysis, the relationship between and energy efficiency is regarded as linear relationship on the condition of the outdoor dry-bulb temperature between 28 and 37. Energy efficiency decreases with outdoor dry-bulb temperature increased.This thesis also studies every influential factor of outdoor units grid closed installation with method of orthogonal experiment, getting the distinctiveness of every factor. So we get the best installation project. Through the analysis of the variance, we know that louver opening makes a great impact on air-conditioning energy efficiency; the distance between left and right and the distance of louver also make a great influence on air-conditioning energy efficiency; while other factors make a little impact on air-conditioning energy efficiency. What's more, when baffle plate takes the place of bilateral louver, air-conditioning energy efficiency decreases 19.6%. When using single-side louver fix, air-conditioning energy efficiency decreases rapidly. In order to deal with such problem, the thesis makes four assumptions and then makes a test about one assumptions of additive battle plate. The result shows that energy efficiency with battle plate higher than energy efficiency without battle plate, which is between 21.0% and 23.7%.