The Ice Storage System And Its Economic Analysis

In this paper, the storage system of crystal ice (S-S-C-I) is discussed. The feasibility of S-S-C-I is analyzed in both technologic and economic aspects. After analyzing the working principle and process, the calculation model of the cycle is proposed. Furthermore, parameters and the performance coefficient are calculated. Because of the good ability of transfer heat, the results show that the performance coefficient of S-S-C-I can reach 4.2, which is much higher than the other storage systems. In order to understand process of this system better, the variety of temperature in the storage ice vessel, which is different with the other systems is simulated. The result show that the variety is not linear in the process of storage and release. It is exponential.The operating strategy is analyzed in this paper. We find that the project of chiller priority is better than others in series. We also research the relation between storage and different electricity price, then the determinant equation of storage technologic and the way of electing storage mode are concluded.Calculation models of the initial investment and operating cost of different air conditioning systems are given. According to economics knowledge, several economic indicators are proposed. After using the general air conditioning system and S-S-C-I separately in an office building in Beijing, it is proved that S-S-C-I can yield good economic returns. At last, the influences of cool-storage rate and different electricity price to the economic indicators are discussed.The conclusions of this thesis can be referenced in theory for deep and further research.