Abstract
ESP-r is a powerful tool for simulating building environments and their various mechanical and electrical systems. It has potential for investigating and optimising the thermal performance of enclosed areas of ships and other ocean vessels. ESP-r allows the various elements of an environment such as geometry, topology, occupancy and ventilation systems to be considered in a dynamic, integrated manner. Here, we present an example model of a ship environment and use ESP-r to investigate the effects of various design modifications on the operating costs of the heating and ventilation system of one public area of the ship.