Heating, ventilation, and air conditioning (HVAC) systems are the second largest energy consumers on cruise ships after propulsion system. As a kind of HVAC system, active chilled beam (ACB) have been widely used for cabin service due to their performance efficiency good thermal comfort. However, conventional control strategies ships’ ACB not intelligent enough cannot balance consumption comfor...

Today, many building software tools for evaluating energy efficiency are available. More than three hundred are listed by the US Department of Energy. Despite the diversity of the tools and their users, they generally share the same goals: to reduce the consumption of energy and even to produce surplus energy. We were interested in comparing the information provided by five softwares programmes...

This paper describes a dynamic model of a steam cavity receiver and presents results from simulations performed using this model in TRNSYS 16. The results are compared with experimental data to inform the calibration of specific model parameters. Using the experimental data obtained from the SG4 500 m2 dish at the ANU, it is possible to select a set of model parameters that produce good agreeme...

The storage of surplus heat in the underground and retrieval when required is a promising method for optimizing the energy efficiency of new housing estates. A new approach for the coupled numerical modelling of such problems will be presented. Here, the energy simulation software TRNSYS is directly coupled with the finite element subsurface flow and transport simulation software FEFLOW. This w...

Controlling borehole dynamic response and maximizing efficiency requires an accurate dynamic model to develop an efficient control strategy. Therefore, it is tested to what extent a simple linear model is able to predict the dynamic response of the mean fluid temperature in a single borehole to a given heat input. Three model types are proposed, which have been identified and evaluated through ...

Indoor temperature and relative humidity control in office buildings is crucial, which can affect thermal comfort, work efficiency, even health of the occupants. In China, fan coil units (FCUs) are widely used as air-conditioning equipment buildings. Currently, conventional FCU methods often ignore impact indoor on building occupants by focusing only a single object. This study FCUs with fresh-...

Data-driven models, either simplified or detailed, have been extensively used in the literature for energy assessment buildings and districts. However, uncertainty of estimated parameters, especially thermal masses resistance–capacitance (RC) still remains a significant challenge, given wide variety functionalities, typologies, structures geometries. Therefore, sensitivity analysis parameters R...