Analysis of air conditioning load and practice of technical routes for ultra low and nearly zero energy residential buildings in Shanghai

With the increasing number of ultra low and nearly zero energy buildings in Shanghai, the discussion on the air conditioning systems of these buildings has become more prevalent. Most residential buildings in Shanghai adopt household heating and cooling systems, and mostly adopt the intermittent operation mode of different areas and different time intervals. There is a significant difference between the air conditioning load calculated according to the GB 50736-2012Designcodeforheatingventilationandairconditioningofcivilbuildingsand the actual operating conditions. This paper analyses and studies the air conditioning loads of ultra low and nearly zero energy residential buildings under the intermittent operation mode. It summarizes an air conditioning load calculation method that is tailored to the actual operating conditions in Shanghai and thus provides a more accurate load calculation result. On these bases, this paper analyses the key points of the air conditioning and heating technical routes and the corresponding forms of air conditioning equipment.