An effective approach to increasing energy efficiency in buildings without compromising thermal comfort is optimize heating, ventilation, and air conditioning (HVAC) systems through the use of advanced building-management system features, such as fault detection diagnosis. Such functions are usually developed based on simulation models that must be calibrated validated achieve an appropriate le...

An artificial neural network (ANN)-based controller for hydronic heating plants of buildings is presented. The controller has forecasting capabilities: it includes a meteorological module, forecasting the ambient temperature and solar irradiance, an indoor temperature predictor module, a supply temperature predictor module and an optimizing module for the water supply temperature. All ANN modul...

This article describes a simple model obtained from a commercial Stirling engine and used for heating a caravan. The Stirling engine has been tested in the lab under different electrical load conditions, and the operating points obtained are presented. As an application of the model, a series of transient simulations was performed using TRNSYS. During these simulations, the caravan is traveling...

In this paper, a solar combi-system which consists of solar collector and a CO2 heat pump is investigated experimentally and theoretically. Two experiments are primarily conducted to show the performance of this solar combi-system under different operation conditions. A system model is developed and validated in TRNSYS to analyze the influence of main components parameters. Subsequently, a mult...

1. F-Chart Method 1.1. Performance and Design of Liquid-Based Solar Heating Systems 1.1.1. Storage Capacity Correction 1.1.2. Collector Flow Rate Correction 1.1.3. Load Heat Exchanger Size Correction 1.2. Performance and Design of Air-Based Solar Heating Systems 1.2.1. Pebble Bed Storage Size Correction 1.2.2. Air Flow Rate Correction 1.3. Performance and Design of Solar Service Water Systems 1...

Most thermal simulations of buildings do not include green walls during calculations. This study integrates and evaluates the effect extensive (GWs) on energy balance using a global code dynamic simulation under TRNSYS. The first part presents equations integrated in model. A description software is carried out as well methods integration developed Then, modeling influence GW (Ivy or Virginia C...

The convective and conductive heat transfer between the solar collector working fluids make photothermal performance limited, result in a higher rate of loss from surface conventional absorber to surroundings. Direct absorption collectors (DASC) are favorable alternative for their improved performance. In this study, simulation based on nanostructured has been carried out using TRNSYS. connecti...

Abstract The current work reports on the effect of local climatic conditions electricity generation typical building integrated photovoltaic systems (BIPVs). Three different climates a) semi-continental with increased heating needs, b) Mediterranean moderate and cooling needs c) hot desert high are considered for BIPV systems. evaluation was done through validated TRNSYS simulations. findings s...