Energy savings are an important issue in the context of climate change. The main goal of researchers is to study and develop new methods of improving energy efficiency in household heating. In this paper a Matlab toolbox is presented and explained. The toolbox is developed for researchers and students interested in simulating building energy behavior. A test room is developed and simulated and a radiator model is implemented. Two types of heating are used during the simulation: a radiant floor heating and a panel radiator. A simple on-off control is used for each heating system. The goal of the paper is to study the impact on energy consumption of each heating system used and their impact on energy consumption when the two heating systems are used in different configurations.
Abstract.To optimize the energy consumption in a house, the behavior of the occupants must be changed. This can be achieved by providing information and suggestions to the occupants. Based on a web application, some suggestions can be offered only if it is available a thermal model of the house. This paper presents a simple solution for thermal modeling of a house which includes experimental identification of the parameters of the model, using a less expensive and noninvasive measurement system (indoor and outdoor temperatures and thermal energy consumption). Such data are used to simulate the thermal behavior of the house, to estimate the energy consumption and to obtain solutions to reduce energy consumption. In simulation, the control of the thermal system is performed using a model predictive control algorithm.
The pneumatic actuation is widely used in robotics. The actuators based on pneumatic artificial muscles are unconventional actuation systems which use the shortening by increase of the volume property which generate an axial force. They have a very good force/volume ratio and some advantages compared with conventional pneumatic actuation. This paper presents the mechatronic design of a PRRRP Biglide planar parallel robot actuated by four artificial muscles in antagonist configuration. The control system is based on an 8-bit microcontroller based development board and the position and force control is made by means of pressure regulation using proportional pressure regulators. It was determined the workspace of PRRRP Biglide parallel robot for different strokes of actuators using discretisation method in Matlab environment.
The major breakthroughs that have recently brought fuel cells to the fore-front include the development of low resistance membranes, highly diffusive electrodes, and reduced use of noble metal catalysts. However, in order to obtain the maximum efficiency out of a fuel cell, some parameters like flow control, temperature, water flow and load must be controlled. This paper is focused on the load control. A three-stage SMPS converter is proposed and analyzed. The fuel cell operation and the types of fuel cells are also described. An experimental setup was made using a toy vehicle powered by a fuel cell in order to experimentally prove the theoretical approaches of load control.
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