Taking an air conditioning system with two identical chillers in parallel as an example, analyses the performance of the chillers under part load conditions, and points out that the cooling output of the system shall be only equally shared by the two chillers if the outlet temperature of chilled water is not reset, and that a master-slave control mode can not be adopted.

This paper deduces the calculating formulas that are used to calculate the cooling water outlet temperatures of condenser and cooler at the lowest overall cost.

Control strategy of chilled water temperature for energy efficiency in constant and variable flow systems

Focuses on the main factors influencing chiller operation, including chilled water temperature, cooling water temperature and start-stop control.

According to performance of the chiller, discusses practicability of variable chilled water temperature operation, and obtains the relation between chilled water temperature and rate and cooling capacity.

Effect of coolant temperature on lesion size for radiofrequency ablation with internally cooled probe;

The outlet temperature controlling tactics of condenser in evaporating stage were introduced.