变风量空调系统内外区冷热互补装置原理、设计及其运行策略
Principle, design and operation strategy of cooling and heating complementary device for interior and perimeter zones of VAV air conditioning systems
摘要：
针对变风量空调系统内外分区冬季冷热需求同时存在的情况,本文提出设置一种内外区冷热互补装置,通过主动措施获得混合得益,可平衡内外区的冷热不均,达到内外区冷热互补的目的,从而减少或避免了空调区域内冷热抵消的不节能现象。根据其负荷平衡原理,明确了该装置的设计选型及不同季节的运行策略。通过设计选型,验证了该装置可减小末端加热设备装机容量或避免安装外区加热设备,从而降低空调系统的造价;通过EnergyPlus软件模拟了不同气候区对比案例的冬季运行能耗,证实该装置可减少冬季空调系统运行能耗和费用;该装置除可用于变风量空调系统外,也适用于其他空调系统。
Abstract：
In view of the simultaneous cooling and heating demands in the interior and perimeter zones of variable air volume (VAV) air conditioning systems in winter, this paper proposes to set up a cooling and heating complementary device for the interior and perimeter zones to obtain mixed benefits through active measures, which can balance the uneven cooling and heating between the interior and perimeter zones, achieve the purpose of cooling and heating complementary for the interior and perimeter zones, and reduce or avoid the energy-inefficient phenomenon of cooling and heating offset in the air conditioning zone. According to the principle of air conditioning load balance, the design, selection and operation strategy in different seasons of the device are defined. Through the design and selection, it is verified that the device can reduce the installed capacity of the terminal heating equipment or avoid installing the heating equipment in the perimeter zone, thus reducing the cost of the air conditioning system. The winter operation energy consumption of the comparison cases in different climate regions is simulated by the EnergyPlus software, and it is confirmed that the device can save the operation energy consumption and cost of the air conditioning system in winter. In addition to being used in VAV air conditioning systems, the device is also suitable for other air conditioning systems.
Keywords:variable air volume (VAV) air conditioning system; interior zone; perimeter zone; cooling and heating complementary device; principle; design; operation strategy