CAJ | 학술논문

变频调速在中央空调变流量水系统中有很大的节能作用。在分析了变流量情况下冷冻水泵、冷却水泵的节电量及变流量对冷水机组制冷效率的影响基础上，综合恒压差控制和恒温差控制的优点，采用了一种温度和压差联合控制的方法，且在内环压差控制中，将变频泵固定运行方式改进为循环运行方式。通过实例介绍循环运行无扰动切换的实现过程，改进后的运行方式除了节约大量电能，对系统的起动特性和运行特性都有很大改善。
변빈조속재중앙공조변류량수계통중유흔대적절능작용。재분석료변류량정황하냉동수빙、냉각수빙적절전량급변류량대랭수궤조제랭효솔적영향기출상，종합항압차공제화항온차공제적우점，채용료일충온도화압차연합공제적방법，차재내배압차공제중，장변빈빙고정운행방식개진위순배운행방식。통과실례개소순배운행무우동절환적실현과정，개진후적운행방식제료절약대량전능，대계통적기동특성화운행특성도유흔대개선。
Variable frequency speed adjustment has a great role in energy conservation for variable flow of water in the central air-conditioning system. In the case of variable flow, based on the impact on chiller COP by the variable flow and energy saving of chilled water pumps and cooling water pumps, combining the advantages of constant differential pressure and constant differential temperature, a combination of temperature and pressure control method was adopted. And in the inner pressure control, the pump was improved to the circulation operation from the fixed way. Through examples, the implementation process of bumpless cycle operation was introduced. The improved operating mode can save a lot of energy, and the startup and operational characteristics of the system are greatly improved.