The Research Of Heating Method Of A Courtyard In Cold Northern Regions

The area of courtyard is small, but its energy consumption characteristic issimilar to the large space building. So the courtyard can be treated as a special one toanalyze the method of heating and cooling. For large space, stratified air conditioningtechnology is generally used in cooling, and the application of energy-saving effect isremarkable. But for the heating method, a lot of energy is consumed in the upper partof the building due to the buoyancy of hot air to rise. Even for sufficient heat, lowerspace still can not achieve the required temperature, and the application of stratifiedair conditioning can not get a good energy saving effect, so courtyard’s heatingmethod is still worth discussing.Literature data show that it is inappropriate for courtyard using only hot airheating. In the reconstruction scheme, it is plan to combine hot air heating and radiantfloor heating. However, the ratio of its actual heating effect distribution between themstill should be to verify by some means, this paper will use numerical simulationcalculations.The results show that the conjunction of side air supply and radiant floor heatingsystems can achieve good heating effect. With radiant floor heating system bear thegreater proportion of the load, the up temperature gradually decreases, and more heatis utilized in the lower. When the sixty percent of heat is bear by the radiant floorheating system, the maximum effect of improving is achieved. Although the layeredair conditioning effect is not obvious in the heating, but temperature stratificationformed by the level of air supply is still advantageous to the heat load reduction. Sothe angle of hot air supply should be cautious to increase, preventing the destructionof this temperature stratification effect. For the issue, it can get better results when thesupply air temperature is about27℃, and the radiant floor heating temperature isabout30℃.