Liu Cichong, Shi Junru, Wu Yun, et al. Application of R290 in High-powered Commercial Water Chiller[J]. Journal of refrigeration, 2018, 39(4).
DOI:
Liu Cichong, Shi Junru, Wu Yun, et al. Application of R290 in High-powered Commercial Water Chiller[J]. Journal of refrigeration, 2018, 39(4). DOI: 10.3969/j.issn.0253-4339.2018.04.099.
Application of R290 in High-powered Commercial Water Chiller
a model used to predict the R290 refrigerant charge in a high-powered commercial water chiller was developed
and the error is within 3%. Meanwhile
the influences of the ambient temperature and outlet water temperature on a commercial high-powered water chiller system have been studied by applying R290 and R22. The results suggest that when the system is in operation
the major refrigerant is stored in a condenser and liquid pipes
with 56.95% and 7.37% of the total refrigerant charge
respectively. Based on the experimental results
it is easy to conclude that under high ambient temperature
R290 has a huge advantage compared to R22. At the same water outlet temperature
the R290 system COP is improved by 13.9% compared to R22 at an ambient temperature of 50 ℃
whereas the R22 and R290 systems have the same tendency with an increase in water outlet temperature.