The heat supply system for consumers at the address: Kryvyi Rih, Mykoly Khodycha St., 15, is currently based on the use of outdated boiler infrastructure, the physical and moral wear and tear of which leads to increased consumption of fuel and energy resources, reduced reliability of heat supply and increased operating costs. The main problems of the current state: low efficiency of boiler equipment; increased heat energy losses in the production process; limited possibilities for automated regulation of operating modes; non-compliance with modern requirements for energy efficiency and reliability; risks of interruption of heat supply during the heating season. These factors form a gap between the actual level of heat supply efficiency and target indicators defined by the current state and local policy in the field of energy saving and development of municipal infrastructure. Target level (desired state) The target level of project implementation is the creation of a modern, energy-efficient and reliable source of heat supply by reconstructing the boiler house with the installation of a factory-made modular boiler house, which will ensure: stable heat supply to existing consumers; reduction of specific natural gas consumption; reduction of heat energy losses; compliance with modern regulatory requirements for energy efficiency, safety and environmental friendliness; increased manageability and flexibility of the heat supply system. Purpose of the public investment project The purpose of the public investment project is to increase energy efficiency and reliability of heat supply to consumers of the Kryvorizhteplomerezha heating and cooling system by reconstructing the boiler house at Mykoly Khodych Street, 15 with the installation of a modern modular boiler house, which will reduce the consumption of fuel and energy resources, optimize budget expenses and ensure sustainable development of urban infrastructure. Methods for achieving the project goal: Achieving the set goal is ensured by implementing the following key measures: Technical modernization of the heat supply source Installation of a factory-made BMK-500 block-modular boiler house with modern gas-fired water-heating boilers with increased efficiency. Implementation of automated control systems Ensuring automatic regulation of boiler equipment operating modes in accordance with the actual heat load and temperature schedule. Optimization of the heat supply system Application of a closed two-pipe heat supply system with minimizing coolant losses and reducing corrosion processes. Reduction of heat losses Use of a thermally insulated BMK container and modern engineering solutions for the passage of communications through enclosing structures. Increasing the reliability and flexibility of heat supply Provision of the possibility of operating the boiler house on a backup type of fuel (diesel fuel) in case of gas supply restrictions. Justification for closing the gap The implementation of the project directly closes the existing gap between the current state and the target level by: replacing outdated equipment with modern energy-efficient equipment; reducing energy losses at all stages of heat production; transitioning to automated heat generation management; reducing operational and emergency risks. As a result, a qualitatively new level of heat supply is achieved that meets the requirements of sustainable development, increases the efficiency of budget use, and ensures long-term reliability of the system.

The block-modular boiler house (BMK) is designed to supply thermal energy for heating needs to existing consumers of the municipal enterprise of heat networks “Kryvorizhteplomerezha”. The boiler plant equipment is mounted inside the container. The container structure is welded, made of steel sheets and profiles, with a 100 mm thick insulation made of non-combustible material. The degree of fire resistance of the container is IIIa according to DBN V.1.1-7. The exits of communications are through the walls of the container. The boiler plant is made on the basis of two steel fire-tube water-heating gas boilers. Natural gas is used to produce thermal energy, which is supplied to the boiler house via a designed pipeline from the existing gas pipeline with a SHGRP installation to reduce the pressure to the calculated one. Structurally, the BMC provides for the possibility of switching to diesel fuel. The nominal thermal power of the boiler house equipment is 516 kW. Nominal heat output 466 kW. The heat supply system is a closed two-pipe system. From the boiler room, thermal energy is released with heated water according to the temperature schedule T1-T2 = 90-70˚С. The maximum operating pressure is 0.6 MPa. The BMK-500 block-modular boiler room is a finished product (manufactured in accordance with TU U 28.2-20016760-026-2023), which is supplied by the manufacturer in a fully equipped form with all technological, construction and fire protection systems. This project does not develop internal systems and equipment of the BMK. It is assumed that the BMK will be connected to gas, heat, water, electricity and sewage networks. The Customer selected the type of block-modular boiler plant. For stable operation of the boiler room, namely the electricity supply system, a DES is installed. The use of a diesel generator (emergency power system) does not provide for constant operation, but only in emergency situations. The emergency power system is intended for short-term operation while the main power supply of the boiler house is being established. The need to install diesel generators is associated with frequent stabilization and emergency power outages, which are caused by a shortage of electricity due to attacks by the Russian Federation on the country's energy infrastructure during the Russian armed aggression against Ukraine