Influence of Ventilation Operating Modes on Energy Efficiency

Abstract

The most significant increase in construction volumes in Latvia was registered in the time period from 2005 to the middle of 2008. Many large suburban areas around Riga were landscaped for building single-family-type houses. People have been using these properties for 12–15 years, and now, the challenge for the inhabitants is to find the most efficient way to maintain a high level of living comfort. Deteriorating systems require investments, so it is in the interest of owners to ensure that the benefits of such investments are maximized and that energy consumption is as low as possible. In this study, the authors simulated various scenarios where HVAC system parameters were changed, and the thermal performance of building structures was improved. Annual energy consumption, indoor quality and thermal comfort were analyzed. The importance of this work is justified by the need to realize and define the energy efficiency levels of existing single-family houses and demonstrate the amount of investment required to move closer to established energy efficiency targets.

Statistical Evaluation and Development of General Thermal Comfort Equations for Naturally Ventilated Buildings in Humid and Dry Hot Climates

“…The construction of modern buildings, and even the architectural renovations of existing buildings, maintain a close link with thermal comfort, and under an ideal scheme they also maintain it with the efficient use of energy [33]. As a result, the diverse passive techniques of architecture, as well as the use of organic change phase materials, orientation of built spaces, and the multiple HVAC solutions available on the market for housing, have improved significantly and can directly contribute to adding value to the property and minimize the thermal effects that alter the sensations of the users [50]. Gagnon et al (2018) [51] established that the process of building design must be modified globally.…”

Hybrid Heat Pump Performance Evaluation in Different Operation Modes for Single-Family House

“…Several advantages of HHP can be highlighted. These include the ability to utilise multiple energy sources (such as electricity and heat based on natural gas, propane, etc), greater flexibility in energy consumption, the potential for installation in a variety of building types, making them a viable retrofit option for existing structures, and their role as a transitional technology that facilitates a smoother transition to fossil fuel-free alternatives [6][7][8][9][10]. Hybrid systems, equipped with a fossil fuel-powered heater as a backup, enable the use of heat pumps in retrofit situations, providing a reliable solution.…”

Indoor Air CO2 Sensors and Possible Uncertainties of Measurements: A Review and an Example of Practical Measurements

“…Control of ventilation and air condition systems based on CO 2 monitoring have been reported as one of the most energy efficient and economically viable solutions [12,13]. It allows for keeping the balance between energy consumption and indoor air quality [3,14,15]. For example, optimization of ventilation systems in a single family house can ensure a reduction of energy consumption by 38% in Latvian climatic conditions [16].…”