HYBRID VENTILATION SYSTEM: ENERGY-EFFICIENT USE IN NEW BUILDINGS AND RENOVATIONS

Abstract

The article presents the experience of using hybrid ventilation systems and considers the reconstruction of old systems in residential buildings to hybrid ones. The purpose of this study is to identify the cost-effectiveness in terms of energy efficiency in the modernization of natural exhaust ventilation systems. Studies and operating experience have shown that such a step is not always reasonable and energy efficient in buildings of typical projects of the 70's - 90's. However, modern technologies and materials have made it possible to put such solutions in the design for the sake of reducing energy consumption. Also, such systems are designed to save valuable living space without arranging separately mechanical and natural ventilation.

Subject of study: Functionality of hybrid ventilation system when equipping old typical houses with it and installing it in new ones, energy efficiency of this measure.

Methods and materials: The study was based on the research of the Moscow Research and Design Institute of Typology and Experimental Design (MRDITED) and works of I.I. Borovitsky on reconstruction of existing residential buildings, as well as expert articles in the field of ventilation design.

Results: To create hybrid ventilation in residential buildings, fans are installed that operate only when there is insufficient draft. They can be installed in warm attics, providing air movement in all connected ducts. Another way to save energy and maintain air exchange is to install a combined supply and exhaust system with a heating radiator, which is not yet so common in Russia.

Conclusions: In older buildings, the installation of the system requires time to recoup the cost of its installation, in new projects, this technology can be applied, as it will help reduce the cost of heating residents and provide the normalized parameters of the microclimate in both warm and cold seasons.