система теплопостачання

Energy-efficient Control of Electric Vehicle Heating, Ventilation, and Air Conditioning System – Performance Optimization and Energy Consumption Reduction

The article addresses the challenge of improving the energy efficiency of the heating, ventilation, and air conditioning (HVAC) system in electric vehicles. Due to the absence of an internal combustion engine in electric vehicles, there is no additional heat source, meaning that HVAC systems consume a significant portion of the battery energy, thereby reducing the vehicle’s range. The aim of this study is to develop an energy-efficient control algorithm for the HVAC system that minimizes energy consumption while maintaining adequate comfort levels for passengers.

Simulation of Hybrid Solar Collector Operation in Heat Supply System

The paper focuses on the investigation and the simulation of the efficiency of a hybrid solar collector in a heat supply system consisting of two separate units, namely a heat storage tank and a flat solar collector, which are interconnected by pipelines. The study includes the analysis and calculation of the thermal parameters of the system for one day and the determination of the optimal values of the flow rate of the heat carrier in the solar collector and the mass of the heat carrier in the heat storage tank to achieve maximum thermal efficiency of the system.

Use of Water-TiO2 Nanofluid in Horizontal Slinky Collector of Heat Pump

The hydrodynamics of water-TiO2 nanofluid in the Ø32×3 mm horizontal Slinky collector of the heat pump, as well as the heat transfer from river water to the nanofluid have been studied in the paper. Water-TiO2 nanofluid provides attractive opportunities of the application in the energy industry due to its enhanced thermal properties. The thermal and hydrodynamic characteristics of the heat transfer fluid with spherical TiO2 nanoparticles in the temperature range from 2 to 12.5 °C have been analysed.