Study on fresh air load characteristics and energy saving measures of low energy consumption buildings in severe cold area

In order to study the fresh air load characteristics of low energy consumption buildings with different envelope structure parameters, combined law load, saving measures were studied. Taking ultra-low building Shenyang Jianzhu University as an example, DeST simulation software was used establish five groups models parameters for simulation. The results show that heat in model 1 5 is 29.89%, 34.66%, 38.60%, 44.68% and 53.36% respectively. seasonal cooling conditioning accounted 13.78%, 13.85%, 13.88%, 13.99% 14.05% thermal insulation performance has great influence on building, but little building. better envelope, greater potential load. Fresh sensible mainly latent From theoretical point view, adopts a recovery device efficiency 0.6, which can save 5989.91kW • h heating season reduce by 32.02%. 131.45kW h, 1.56%; Total 708.73kW 8.43%.With development zero-energy technology, requirement more strict, active all-heat suitable this It also space future development. This paper analyzes change envelope. methods ideas reducing are discussed.