液化天然气气化冷能用于建筑空调系统的研究
Application research of LNG gasification cold energy to building air conditioning systems
摘要：
为解决液化天然气气化冷能浪费问题，提出了将液化天然气气化冷能通过冰蓄冷方式回收，作为周边配套建筑空调系统冷源的方案。以某液化天然气气化站周边配套建筑（峰值负荷为3 140 kW）的空调系统作为实例，分析了常规空调系统和液化天然气气化冷能回收系统的设备初投资和运行费用。结果表明，在当地峰谷电价下，气化冷能回收量约为272.5万kW·h，后者运行费用减少约53.84万元，静态投资回收期为1.7 a。
Abstract：
In order to solve the waste problem of cold energy in LNG gasification, puts forward a scheme that the cold energy in LNG gasification can be recovered by ice cool storage as the cold source of air conditioning system in surrounding buildings. Taking the air conditioning system of a service building (peak load of 3 140 kW) around a LNG gasification station as an example, analyses the equipment initial investment and operation cost of the conventional air conditioning system and the LNG gasification cold energy recovery system. The results show that with the local peak-valley electricity price, the recovery of gasification cold energy is about 2.725 million kWh, the operation cost of the latter is reduced by about 538 400 yuan, and the static investment payback period is 1.7 years.
Keywords:liquefied natural gas(LNG), gasification cold energy, ice cool storage, air conditioning system, cost analysis, payback period