The LMS Imagine.Lab Refrigerant Loop solution enables to calculate refrigerant flow rates, pressures, temperatures, heat exchanger performance, air temperature and humidity. It also enables the design, sizing and evaluation of performance of components in the whole system, the testing of new fluids (CO2 for example), and the evaluation of the Coefficient of Performance (COP) of the loop. The solution supports engineers in studying the interactions between these components and the linked systems and/or environment.