Abstract: A chiller's performance tester includes two flowrate sensors, four temperature sensors, one current sensor, one voltage sensor, all sensors being externally connectable, and an enclosure in which a thermal energy calculation IC board, an electrical power calculation IC board, and a programmable logic controller are arranged. The enclosure has a front side to which a man-machine interface panel that displays measurement readings and provides function-related operations is mounted. The enclosure has a back side to which a socket-carrying panel that is connectable to cables of the sensors is mounted. Readings of flowrate, temperature, current, and voltage are transmitted to the programmable logic controller in which software is executed to compile and integrate these signals to be further transmitted to a computer for subsequent analysis and monitoring. Test of a water chiller is made simple and cost, man power, and working hours are saved.

Abstract: The present invention relates to a condenser tubes cleaning system for alleviating the common disadvantage of the prior arts includes a flow diverter, a first branch pipe, a second branch pipe, a three-way valve, a first one-way valve, a bypass pipe, a ball barrel, a liquid supply pipe, a cleaning ball supply pipe, a cleaning ball return pipe, a liquid return pipe, a second one-way valve, a normally open two-way valve, and a ball trap. Thus, the flow diverter is provided with the three-way valve, and the ball trap is provided with the normally open two-way valve, so that the flow diverter and the ball trap have a bypass function that the prior arts do not have, to maintain the constant flow rate in the main supply pipe and the main return pipe without increasing the electrical power load of the main circulating pump.

Abstract: A chiller's performance tester includes two flowrate sensors, four temperature sensors, one current sensor, one voltage sensor, all sensors being externally connectable, and an enclosure in which a thermal energy calculation IC board, an electrical power calculation IC board, and a programmable logic controller are arranged. The enclosure has a front side to which a man-machine interface panel that displays measurement readings and provides function-related operations is mounted. The enclosure has a back side to which a socket-carrying panel that is connectable to cables of the sensors is mounted. Readings of flowrate, temperature, current, and voltage are transmitted to the programmable logic controller in which software is executed to compile and integrate these signals to be further transmitted to a computer for subsequent analysis and monitoring. Test of a water chiller is made simple and cost, man power, and working hours are saved.

Abstract: The present invention relates to a condenser tubes cleaning system for alleviating the common disadvantage of the prior arts includes a flow diverter, a first branch pipe, a second branch pipe, a three-way valve, a first one-way valve, a bypass pipe, a ball barrel, a liquid supply pipe, a cleaning ball supply pipe, a cleaning ball return pipe, a liquid return pipe, a second one-way valve, a normally open two-way valve, and a ball trap. Thus, the flow diverter is provided with the three-way valve, and the ball trap is provided with the normally open two-way valve, so that the flow diverter and the ball trap have a bypass function that the prior arts do not have, to maintain the constant flow rate in the main supply pipe and the main return pipe without increasing the electrical power load of the main circulating pump.