CAJ | 학술논문

在现有的利用LNG卫星站冷能制冰的技术中，由于LNG气化量随季节及各时段用气量不同有很大的波动，会出现LNG气化量与冰的需求量不匹配的问题，且制冰量不稳定。针对这一问题，提出了一种新的联合制冰工艺，该工艺把利用相变冷媒（R410 A ）与L N G换热制冰的方法和蒸气压缩式制冷循环相结合，并采用天然气发动机为压缩机提供动力。除了能解决以上问题，还可缓解电力燃气的季节不平衡性。运用HYSYS软件对该工艺进行了模拟分析，并确定了该工艺的关键运行参数，模拟结果表明：气化量为2×104～10×104 m3/d的小型LNG卫星站，日制冰量约为127 t ，相比用普通的制冰方法制取相同的冰最多每天可节约7332 kW的能量。若按每100 kg冰块8元的批发价计算，年毛收入可达370．36万元，经济效益非常可观。
재현유적이용LNG위성참랭능제빙적기술중，유우LNG기화량수계절급각시단용기량불동유흔대적파동，회출현LNG기화량여빙적수구량불필배적문제，차제빙량불은정。침대저일문제，제출료일충신적연합제빙공예，해공예파이용상변냉매（R410 A ）여L N G환열제빙적방법화증기압축식제랭순배상결합，병채용천연기발동궤위압축궤제공동력。제료능해결이상문제，환가완해전력연기적계절불평형성。운용HYSYS연건대해공예진행료모의분석，병학정료해공예적관건운행삼수，모의결과표명：기화량위2×104～10×104 m3/d적소형LNG위성참，일제빙량약위127 t ，상비용보통적제빙방법제취상동적빙최다매천가절약7332 kW적능량。약안매100 kg빙괴8원적비발개계산，년모수입가체370．36만원，경제효익비상가관。
Owing to the vaporizing quantity of LNG changing a lot in different seasons and times ,some problems occur in the existing ice-making process by utilizing cold energy from LNG satellite station ,including the mismatch between LNG vaporizing quantity and ice requirement , with the unstable output of ice-making .To solve these problems ,a novel associated ice-making process was proposed .This process combines the ice-making method of utilizing cold energy from LNG with phase transition refrigerant (R410A) and the vapor compression refrigeration cycle ,a-dopting natural gas engine to provide the power for compressor .In addition to solve the above problem ,the new process also can alleviate the seasonal imbalance of electricity and gas .Simula-tions were carried out with the process software HYSYS ,and the key operational parameters of the new process have been determined .The simulation results show that the output of ice-making is about 127 t for the small LNG satellite station that vaporizing quantity is 20 × 103 -100 × 103m3/d .Compared with the ordinary ice-making method ,the new process can save energy up to 7 332 kW per day .If the w holesale price of ice is 8 yuan per 100 kg ,the annual gross income will amount to 3 703 600 yuan .The new process has considerable economic benefit .