Effects of seawater flow rate and evaporation temperature on performance of Sherbet type ice making machine

8th TSME-International Conference on Mechanical Engineering

Son, C.H.^1 ; Yoon, J.I.^1 ; Choi, K.H.^1 ; Lee, H.K.^2 ; Lee, K.S.^2 ; Moon, C.G.^3 ; Seol, S.H.^4

Pukyong National University, Busan

48547, Korea, Republic of^1

Pukyong National University Graduate School, Busan

48547, Korea, Republic of^2

Daeil Co., Busan

46027, Korea, Republic of^3

Hokkaido University Graduate School, Sapporo

0608628, Japan^4

关键词: Change tendencies;    Evaporation capacity;    Evaporation pressure;    Evaporation temperature;    Heat sources;    Inlet temperature;    South Korea;    Volumetric flow rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/297/1/012069/pdf
DOI  :  10.1088/1757-899X/297/1/012069

来源: IOP

【 摘 要 】

This study analyzes performance of the sherbet type ice making machine using seawater with respect to seawater volumetric flow rate, evaporation temperature, cooling water inlet and seawater inlet temperature as variables. Cooling water inlet and seawater inlet temperature are set considering average temperature of South Korea and the equator regions. Volumetric flow rate of seawater range is 0.75-1.75 LPM in this experiment. The results obtained from the experiment are as follows. As the seawater volumetric flow rate increases, or seawater inlet temperature increases, evaporation capacity tends to increase. At the point of seawater inlet temperature of 27°C and volumetric flow rate of 1.0LPM, evaporation capacity is over 2kW. On the other hand, results of COP change tendency are different from that of evaporation capacity. It appears to increase until volumetric flow rate of 1.0LPM, and decrease gradually from volumetric flow rate of 1.5LPM. This is due to the increase of compressor work to keep the evaporation pressure in accordance with the temperature of heat source. As the evaporation temperature decreases from -8 to -15°C, the evaporation capacity increases, but the COP decreases.