A Case Study on the Design Model of Sunroom in the New Rural Houses in West China from the Perspective of Carbon Emission

In the solar radiation enriched areas of west China, solar heat gain has a significant impact on the heating demand of houses, thus the application of solar energy technology in new rural houses is becoming popular. Taking a new rural house project in west China as a case, this paper studied a number of factors influencing solar energy utilization in sunroom with Design Builder software and came up with some results and recommendations for the design of sunroom from the perspective of carbon emission reduction: (1) If local new rural house has the attached sunroom and it is oriented to south direction, the carbon emissions of rural house can be reduced by about 20% per unit area. (2) Sunroom roof with southward slope can well reduce the heat load of the rural house. (3) Height of the sunroom should be not higher than that of its adjacent back wall, otherwise opaque partition structure is preferable to be used. (4) With the same land area and construction area of the case project, the recommendable width and depth of the south-facing sunroom is 4.8 and 3.9 m respectively.