Yuriy Kondratyuk Poltava Polytechnic National University

Yuri Kondratyuk Poltava Polytechnic National University is one of the leading higher education institutions in central Ukraine, combining a long history with a modern approach to training specialists. The university has a well-developed infrastructure, 9 academic buildings, 5 student dormitories, laboratory complexes, and an innovation technology center. Here, students are trained in technical, economic, architectural and construction, humanitarian, and IT disciplines. Poltava Polytechnic plays an important role in the development of its region. Its research activities, participation in international projects, and cooperation with industrial enterprises contribute to innovations and the formation of modern human resources.

European project on energy-efficient thermal renovation modernization

Building "A" is the first of the facilities where thermal modernization has been successfully implemented

In late 2024, the president of Poltava Polytechnic, professor Volodymyr Onyshchenko, presented the preliminary results of a large-scale European project on energy-efficient thermal modernization, implemented with the financial support of the European Investment Bank (EIB) as part of the project "Higher Education in Ukraine. Energy Efficiency and Sustainable Development." This project is a striking example of the support that Ukrainian higher education receives from the European Union, applying technical solutions with energy-efficient climate control equipment manufactured in Ukraine by VENTS.

Ventilation requirements and existing limitations

The project included a variety of technological solutions, but one of the key areas was the renovation of ventilation systems and improvement of the climate in classrooms. The university's project team had to select equipment that meets modern energy efficiency requirements, DBN V.2.5-67:2013 standards, and DSTU 9190:2022 standards.

The limitation was that quite often there is insufficient or no space for air ducts and ventilation equipment. In such cases, centralized ventilation systems cannot be used. To solve this problem, it was decided to install decentralized ventilation, which does not require installation of air ducts and can be installed directly in the room it serves.

Project implementation based on the
decentralized ventilation system by VENTS

For educational buildings “A” and “F”, the project provided for the installation of energy-efficient VENTS ventilation units: VUT 3000 PW EC with an air flow of up to 3000 m³/h, as well as single-unit heat exchangers DVUT 500 P BE2 EC (500 m³/h) and DVUT 300 P BE2 EC (300 m³/h). These units are fully equipped autonomous solutions for organizing supply and exhaust ventilation with heat recovery.

DVUT 300 P1 BE2 EC heat exchanger units installed
in room 403-F in the "F" building

DVUT 300 P1 BE2 heat exchanger unit installed

in room 404-F of building "F"

DVUT 500 P BE2 EC A25 units installed
in lecture hall 206-A of building "A"

The key advantage of VENTS decentralized systems is the ease of automation and the ability to precisely maintain indoor climate parameters in each room. DVUT 500 P BE2 EC heat exchangers installed in classrooms can operate in modes based on the concentration of CO₂ in the air (if VENTS CO₂-1 sensors are used). DVUT 500 P BE2 EC heat exchangers installed in classrooms can operate in modes based on the concentration of CO₂ in the air (if VENTS CO₂-1 sensors are used). This approach allows for dynamic control of the volume of supply air, ensuring a high-quality indoor climate and minimizing energy use.

The automatic control system enables coordinated operation of all elements of the unit and ensures maximum energy efficiency. Actuators produced by leading global manufacturers guarantee reliability, durability, and compliance with high electromagnetic compatibility requirements, which is of utmost importance for facilities equipped with numerous engineering systems. Control panel A25, which is located directly in the auditorium, allows the lab assistant to monitor and adjust the heat exchanger's operating modes.

Location of the A25 control panel

for the DVUT 500 P BE2 EC A25 single unit

Control panel for the A25 single unit

All heat exchangers are installed directly in the premises they serve, attached to the ceiling on metal structures (pins, brackets, frames) and do not require heavy equipment for delivery or installation, which simplifies logistics and shortens the project implementation time.

Installation of DVUT 500 P BE2 EC single-unit heat exchanger in one of the lecture halls by specialists from the contracting organization

Installed DVUT 500 P BE2 EC A25 units

in lecture hall 202-A of building “A”

Given the ongoing hostilities in Ukraine and the shelling committed by the aggressor state against the civilian infrastructure of our country, it is decentralized ventilation systems that mitigate the damage to buildings and structures caused by the shock wave from an explosion and, consequently, reduce the number of casualties.

General ventilation system for the basement shelter
of building “A”

Supply chamber of the general ventilation system for the shelter based on the VUT 3000 PW EС heat recovery unit

Practical results of the modernization

Installing decentralized ventilation systems by VENTS ensured stable air circulation, improved the indoor climate, and lowered energy use in the university's academic buildings. Automated control based on CO₂ levels helped optimize the operation of the equipment and increase the heat recovery efficiency.

The compact size of the heat recovery units and the lack of air ducts significantly simplified the installation, shortened the implementation time, and minimized interference with existing building structures. Decentralized ventilation increases the infrastructure's resilience to damage, which is an important factor during wartime.

The Poltava Polytechnic project is a clear example of how energy-efficient ventilation equipment by VENTS can be integrated into large educational institutions, ensuring compliance with modern Ukrainian and European regulations and proving the effectiveness of domestic technologies in complex engineering tasks.

Models