{"id":37079,"date":"2024-10-25T14:03:18","date_gmt":"2024-10-25T12:03:18","guid":{"rendered":"https:\/\/biblus.accasoftware.com\/en\/?p=37079"},"modified":"2024-10-25T14:03:18","modified_gmt":"2024-10-25T12:03:18","slug":"boiler-breakdown-exploring-the-essential-components-and-how-they-work-together","status":"publish","type":"post","link":"https:\/\/biblus.accasoftware.com\/en\/boiler-breakdown-exploring-the-essential-components-and-how-they-work-together\/","title":{"rendered":"Which are the key components of a boiler?"},"content":{"rendered":"<p class=\"sommario\">A boiler system explained: unveiling its structure, operation, key components, and essential maintenance for optimal performance.<!--more--><\/p>\n<p>Boilers play a crucial role in heating systems and the production of domestic hot water across residential, commercial, and industrial settings. Understanding the key components of a boiler is essential for grasping its operational dynamics, ensuring proper maintenance, and maximizing overall system performance. In this analysis, we will focus on gas boilers, the most common and widely used type<\/p>\n<p>I recommend using a <a class=\"textualLink_edificius-mep\" href=\"https:\/\/www.accasoftware.com\/en\/mep-software\" target=\"_blank\" rel=\"noopener\">BIM MEP software<\/a> to carry out the design, calculations, sizing, and checks of the system in the most reliable and professional manner.<\/p>\n<h2 id=\"fundamentals-of-boilers\">Fundamentals of Boilers<\/h2>\n<p>Boilers form the heart of centralized heating systems and domestic hot water production in both residential and industrial settings. Their technical sophistication stems from the seamless <strong>integration of numerous components<\/strong>, each performing a vital role within the thermal cycle. A deep <strong>understanding of these components is crucial not only for optimizing installation and maintenance<\/strong> but also for <strong>enhancing energy efficiency<\/strong>, ensuring <strong>operational safety <\/strong>and <strong>prolonging system lifespan<\/strong>.<\/p>\n<p>In a boiler system, every part works in harmony. The burner, heat exchanger, gas valve, fan, circulator, and other critical components collaborate to convert fuel\u2014typically natural gas or LPG\u2014into efficient, usable heat while minimizing energy loss and reducing emissions.<\/p>\n<p>Let\u2019s dive into a detailed breakdown of each component<\/p>\n<h2 id=\"main-boiler-components\">Main Boiler components<\/h2>\n<p>The main components of a gas boiler are:<\/p>\n<ul>\n<li>heat exchanger;<\/li>\n<li>burner;<\/li>\n<li>fan;<\/li>\n<li>gas valve;<\/li>\n<li>water group and circulator;<\/li>\n<li>expansion vessel.<\/li>\n<\/ul>\n<h2 id=\"heat-exchanger\">Heat Exchanger<\/h2>\n<p>Heat exchangers are open devices engineered to transfer thermal energy between two fluids at different temperatures. This transfer occurs across a metal surface that separates the fluids, preventing direct contact and mixing. For instance, in applications like engine radiators or milk pasteurization, the fluids\u2014such as air and water, or milk and steam\u2014remain isolated to prevent contamination and maintain the integrity of the product.<\/p>\n<p>Heat transfer in these exchangers mainly occurs through two mechanisms: <strong>convection<\/strong> within each fluid and <strong>conduction<\/strong> through the metal wall separating them.<\/p>\n<p>&nbsp;<\/p>\n<div id=\"attachment_28747\" style=\"width: 954px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-28747\" class=\" wp-image-28747 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/biblus.accasoftware.com\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/heat-exchanger-fluids.jpg\" alt=\"Heat exchanger fluids\" width=\"944\" height=\"622\" \/><p id=\"caption-attachment-28747\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\" wp-image-28747 lazyload\" src=\"https:\/\/biblus.accasoftware.com\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/heat-exchanger-fluids.jpg\" alt=\"Heat exchanger fluids\" width=\"944\" height=\"622\" \/><\/noscript> Heat exchanger fluids<\/p><\/div>\n<h3>Types of heat exchangers<\/h3>\n<p>The most commonly used types of heat exchangers are:<\/p>\n<ul>\n<li><strong>shell and tube<\/strong>: consisting of two concentric tubes through which two fluids at different temperatures flow. The inner tube is generally made of a highly thermally conductive metal material, while the outer one is coated with a thermal insulating material. This design is particularly used in the food industry, where it is essential to maintain high hygiene standards; the inner tube, often made of stainless steel, is resistant to fouling and easily cleanable. In shell and tube systems, fluids are classified as:\n<ul>\n<li><strong>service fluid<\/strong>, which provides heat from the outer tube (often water);<\/li>\n<li><strong>served fluid<\/strong>, which receives the heat.<\/li>\n<\/ul>\n<\/li>\n<li><strong>parallel flow<\/strong>: the two fluids flow in the same direction. This configuration allows for faster heating, although the temperature increase of the served fluid is lower compared to the countercurrent configuration. It is typically used in processes that require short heating times, such as milk pasteurization;<\/li>\n<li><strong>counterflow<\/strong>: the fluids flow in opposite directions. This arrangement allows for a greater temperature difference between the fluids, making it more efficient in terms of heat transfer per unit of exchange surface.<\/li>\n<\/ul>\n<h3>Heat exchangers: the choice of materials is crucial<\/h3>\n<p>Heat exchangers are designed to maximize thermal transfer efficiency while minimizing energy losses. The choice of materials is crucial:<\/p>\n<ul>\n<li><strong>cast iron<\/strong>: traditionally used for its high thermal capacity and durability, cast iron offers excellent corrosion resistance, but has a high weight and a reduced ability to respond to rapid temperature changes, which can limit the dynamic efficiency of the system;<\/li>\n<li><strong>stainless steel<\/strong>: very common in modern boilers, stainless steel combines corrosion resistance and lightness, promoting a faster thermal response. It is ideal for secondary heat exchangers, especially in condensing boilers, where contact with acidic condensate requires highly resistant materials;<\/li>\n<li><strong>aluminum-silicon<\/strong>: this material is appreciated for its lightness and excellent thermal conductivity, but requires surface treatments to prevent long-term corrosion, especially in applications with condensation.<\/li>\n<\/ul>\n<h2 id=\"burner\">Burner<\/h2>\n<p>The burner is a critical component of a boiler\u2019s heating system, responsible for igniting the fuel and generating heat. Its design and operation are key factors in determining energy efficiency, safety, and emissions control. The burner precisely mixes fuel with combustion air and ignites the mixture to produce the necessary heat. This combustion process unfolds in several stages, each contributing to the overall performance of the system:<\/p>\n<ul>\n<li><strong>fuel mixing<\/strong>: the fuel (typically natural gas or LPG) must be mixed with air in optimal proportions to ensure complete combustion. The air-fuel ratio is regulated by electronic control systems that ensure the correct stoichiometric ratio;<\/li>\n<li><strong>ignition<\/strong>: once the air-fuel mixture is ready, it is ignited. Ignition technologies may vary, but ignition must be reliable and safe. Ignition can occur through different technologies, each with specific advantages:\n<ul>\n<li><em>piezoelectric ignition<\/em>: used in simpler applications where reliability is a priority;<\/li>\n<li><em>electronic ignition<\/em>: predominant in modern boilers, it offers precise control and allows for automatic ignition sequencing. This technology can be integrated with an ionization detection system to constantly monitor the presence of the flame and shut down the burner in case of anomalies;<\/li>\n<\/ul>\n<\/li>\n<li><strong>combustion<\/strong>: the flame generated by combustion transfers heat to the heat exchanger. The quality of combustion directly affects the efficiency and emissions of the boiler.<\/li>\n<\/ul>\n<h3>Types of burners<\/h3>\n<p>There are <strong>various types of burners<\/strong>: atmospheric, premixed, modular. <strong>Atmospheric burners<\/strong> use ambient air as the oxidizer and do not require forced ventilation. Gas is mixed with air through a diffuser and burned in an open combustion chamber. This type of burner is simple and inexpensive, but has lower efficiency compared to other types. NOx and CO emissions may be higher, and the regulation of air and gas flow is less precise.<\/p>\n<p>In <strong>premixed burners<\/strong>, gas and air are mixed before entering the combustion chamber. This type of burner offers more complete combustion and higher efficiency. Premixing occurs in a mixing chamber, where gas is drawn through a fan and mixed with air in optimal proportions. Premixed burners offer continuous power modulation, allowing the combustion to be adapted to the heat demand. This helps reduce NOx and CO emissions.<\/p>\n<p><strong>Modular burners<\/strong> are designed to adapt to various levels of thermal load by modulating the flame. They can operate in modulating mode to optimize efficiency and reduce ignition and shutdown cycles. They offer greater flexibility and precision in power regulation. They are equipped with actuators and sensors to monitor and control combustion in real time.<\/p>\n<h3>Boiler Components<\/h3>\n<p>A burner is in turn made up of a series of components: mixing drawer, fan, ignition system, flame sensor. The main function of the <strong>mixing drawer<\/strong> is to mix gas and air in precise proportions. This component can be equipped with valves and regulators to ensure uniform mixing; it is made of aluminum alloys or stainless steel to withstand high temperatures and corrosion.<\/p>\n<p>The <strong>fan<\/strong> provides the air necessary for combustion. In sealed chamber boilers, the fan is also responsible for expelling combustion fumes. It can be axial or centrifugal. Variable speed fans are often used to adapt the airflow to operating conditions.<\/p>\n<p>The <strong>ignition system<\/strong> starts the combustion of the air-fuel mixture. It can be piezoelectric, electronic, or spark type. It includes ignition electrodes and control systems to ensure a safe and reliable ignition phase.<\/p>\n<p>The <strong>flame system<\/strong> detects the presence and stability of the flame. Ionization or photocell flame sensors continuously monitor combustion and provide feedback to the control system. It is essential to prevent the release of unburned gas and ensure safe combustion.<\/p>\n<h2 id=\"fan\">Fan<\/h2>\n<p>The <strong>boiler fan<\/strong> is a component designed to <strong>expel combustion fumes<\/strong> towards the chimney. Its main function is to force the exhaust gases generated during combustion out of the building effectively.<\/p>\n<p>The fan, also known as an <strong>exhaust fan<\/strong>, plays an important role in maintaining the proper operation of the boiler. Inadequate ventilation can cause malfunctions or damage to the appliance. Therefore, it is essential to perform regular maintenance of the fan, including thorough cleaning after disassembling the device and other related components.<\/p>\n<h3>Structure and composition of the fan<\/h3>\n<p>The boiler fan consists of a small but powerful <strong>impeller<\/strong> that, during operation, pushes combustion fumes towards the chimney. The correct operation of this fan is essential for the boiler to function properly.<\/p>\n<p>To ensure optimal operation, the fan is connected to a <strong>differential pressure switch<\/strong>. This pressure switch, together with the fan, constitutes an essential safety system. Its function is to monitor the pressure inside the system and prevent the excessive accumulation of fumes in the chimney, avoiding the pressure from reaching dangerous levels.<\/p>\n<p>The differential pressure switch measures the pressure variation between the moment when the fan is active and when it is not. If the pressure difference falls within the safety parameters preset in the boiler control panel, the appliance can start and operate normally. If the pressure is outside this range, the pressure switch sends a signal to the control panel, causing the boiler to shut down and an error code to be displayed, varying depending on the brand and model of the boiler.<\/p>\n<p>To locate the fan inside the boiler, it is necessary to remove the front protective panel. The fan appears as a round-shaped metallic component, similar to a tape measure. The impeller is located inside the wider part of this component and activates when combustion is started. Next to the fan is the air pressure switch, which works with the fan to ensure effective evacuation of combustion fumes.<\/p>\n<h3>How does the fan work?<\/h3>\n<p>The boiler fan is responsible for supplying the air needed for combustion and, consequently, for heating the water. Without the correct operation of the fan, the air and gas mixture will not be able to generate the flame required by the boiler.<\/p>\n<p>If the fan does not activate, the problem could be due to an incorrect or absent connection between the fan and the control panel. It is important to identify the cause of this disconnection, which could be related to a malfunction of the control board or other technical issues. The fan operates when hot water is required for heating and when hot water is needed for sanitary use. Since it is a component that works frequently, it can wear out or break over time. To prevent failures and ensure continuous operation of the boiler, it is essential to include the fan in regular maintenance. This maintenance should be carried out by specialized technicians, who are able to perform proper cleaning and ensure the correct operation of all boiler components.<\/p>\n<h2 id=\"gas-valve\">Gas valve<\/h2>\n<p>The gas valve of the boiler is located in the burner block and controls all its functions by modulating the gas flow or blocking it if necessary.<\/p>\n<p>Boiler gas valves can be classified based on different criteria, including the operating principle, type of control, and their specific application. The main categories include:<\/p>\n<ul>\n<li><strong>manual valves<\/strong>\n<ul>\n<li><em>shut-off valves<\/em>: allow to completely interrupt the gas flow to the boiler, usually in case of maintenance or emergency. They operate through a lever or a knob that controls the opening and closing of the gas passage. They are mainly used for isolation and safety operations;<\/li>\n<li><em>manual regulating valves<\/em>: allow manual setting of the gas flow, adjusting the pressure according to operational needs; they are equipped with a knob for fine adjustment of the gas flow rate. They are used in situations where manual adjustment of the flow is required;<\/li>\n<\/ul>\n<\/li>\n<li><strong>automatic valves<\/strong>\n<ul>\n<li><em>safety valves<\/em>: are designed to protect the boiler from dangerous operating conditions, such as overpressure or system malfunctions; they automatically shut off the gas passage in case of emergencies, such as pressure loss or detection of abnormal flames. They are essential to ensure the safety of the heating system;<\/li>\n<li><em>proportional control valves<\/em>: are used to automatically regulate the gas flow based on the boiler&#8217;s heat demand; they operate through electronic actuators that modulate the gas flow in response to signals from temperature and pressure sensors. They optimize the boiler&#8217;s performance and efficiency by continuously adjusting the gas flow;<\/li>\n<li><em>modulating valves<\/em>: have a continuous modulation capacity, regulating the gas flow based on thermal load variations; they can vary the gas flow in response to signals from the boiler control system, adapting to variable operating conditions. They are ideal for boilers with variable load requirements and for systems with continuous modulation.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Valve Components<\/h3>\n<p>Boiler gas valves are made up of several fundamental parts that work together to ensure safe and effective operation. The <strong>valve body<\/strong>, made of robust materials such as aluminum alloys, brass, or stainless steel, houses the gas passage and internal mechanics. This body must withstand rigorous operating conditions, including corrosion and wear. Inside the body, there is the <strong>closure disk<\/strong>, designed to regulate the opening and closing of the gas passage. This disk is usually made of durable materials such as stainless steel or brass alloys, and its precision is crucial to ensure a tight closure.<\/p>\n<p>The <strong>retaining spring<\/strong>, often made of tempered steel, keeps the closure disk in place when the valve is deactivated, ensuring that gas cannot escape when there is no intended flow. The <strong>actuator<\/strong> is the component that controls the valve&#8217;s movement and can be manual, with levers or knobs, or automatic, operated electrically or pneumatically. Automatic actuators regulate the gas flow based on signals from the control unit. Finally, the <strong>sensors<\/strong> and <strong>indicators<\/strong> provide feedback on the valve&#8217;s status, such as its position and gas pressure, ensuring that the system operates within established parameters.<\/p>\n<h3>Valve Operation<\/h3>\n<p>The <strong>operation of gas valves<\/strong> is complex and varies depending on the type of valve and its application. Manual valves, for example, allow physically adjusting the gas flow through knobs or levers. This process requires direct intervention and manual adjustments to achieve the desired flow. In contrast, automatic valves, such as proportional and modulation control valves, operate more sophisticatedly. Proportional control valves use signals from sensors to continuously adjust the gas flow, adapting to variations in the boiler&#8217;s heat demand. This type of valve ensures that the amount of gas supplied is always adequate for thermal needs. Modulation valves, on the other hand, are designed to continuously vary the gas flow in response to changes in thermal load. This continuous modulation improves energy efficiency and operational stability of the boiler, ensuring that the heating system operates optimally even under variable conditions.<\/p>\n<h3>Maintenance and safety of gas valve<\/h3>\n<p><strong>Maintenance<\/strong> and <strong>safety<\/strong> of gas valves are important aspects to ensure the correct operation and safety of the heating system. Regular maintenance of the valves includes cleaning the components to remove debris and build-ups that could compromise their operation. It is important to perform periodic checks to ensure that the valve opens and closes correctly. This involves checking the functionality of the closing disc and the containment spring. In addition, it is essential to monitor any gas leaks from the seals and joints to avoid malfunction risks. Safety is also ensured through gas pressure and flow tests, ensuring that the valves operate within the prescribed safety parameters. In case of malfunctions, it is possible to repair the valve by replacing the damaged parts, or if the damage is severe, complete valve replacement is necessary to maintain the efficiency and safety of the heating system.<\/p>\n<h2 id=\"water-group-and-circulator\">Water group and circulator<\/h2>\n<p>In heating systems, a small component plays a crucial role in the proper functioning of the entire system: the water system and boiler circulator pump. This device is essential as it ensures the distribution of hot water to radiators and domestic hot water systems. Let&#8217;s take a closer look at this fundamental element of home heating and how to correctly determine its power.<\/p>\n<p>The <strong>boiler circulator<\/strong> is a pump that pushes water through the system circuit. However, its function is not limited to this. The use of these pumps significantly contributes to reducing energy waste, thus obtaining several benefits: reducing operating costs, preventing thermal imbalances, and ensuring silent operation of thermostatic valves.<\/p>\n<p>Each boiler circulation pump is characterized by specific flow and head values. As the flow rate (i.e., the amount of water delivered per minute) increases, the head (the maximum distance the pump maintains a certain flow) decreases. In older boilers, these values remain constant. However, modern boilers use inverter circulators, devices capable of automatically modulating energy based on actual needs.<\/p>\n<h3>How to size a circulator<\/h3>\n<p>In the past, sizing pumps was relatively simple due to constant flow. In modern variable flow systems, correctly sizing a circulator requires considering the distance and height between the boiler and the manifold from which the radiator pipes depart. It is essential to accurately determine the head, which is related to the pump power and circuit height. Additionally, the water flow required by the system must be considered: a system with fan coils, for example, requires a higher flow rate compared to traditional radiators. Every detail must be carefully evaluated to ensure optimal system operation, and relying on a professional is the best choice to avoid errors that could compromise system efficiency.<\/p>\n<p>If you notice that some radiators are hot while others remain cold, and the issue is not due to air bubbles in the system, the cause could be related to the boiler circulator. To ensure that the circulator pump operates correctly, it is essential to entrust the boiler maintenance to qualified technicians, capable of detecting any anomalies and preventing the risk of system blockages.<\/p>\n<h2 id=\"expansion-vessel\">Expansion vessel<\/h2>\n<p>The <strong>expansion vessel of a boiler<\/strong>\u00a0is an essential hydraulic component for the correct operation of a domestic heating system. Its main role is to manage sudden pressure variations within the circuit, preventing these fluctuations from damaging the system.<\/p>\n<p>When the boiler is in operation, the water temperature increases, causing an expansion of volume. To prevent system damage due to increased pressure, a device is needed to stabilize this volume increase. The expansion vessel absorbs the excess water generated by the temperature increase, thus maintaining the circuit pressure within safe limits and preventing the overheating of the system.<\/p>\n<h3>How does the expansion vessel work?<\/h3>\n<p>The expansion vessel operates as a sort of &#8220;balloon&#8221; inserted into a metal casing, which inflates or deflates as needed. In a condensing or gas boiler, this mechanism activates whenever the water temperature inside the circuit increases, for example when a hot water tap is opened or the heating system is turned on. The internal membrane of the expansion vessel inflates to accommodate the excess water, stabilizing the pressure and protecting the pipes and other components of the system from pressure variations.<\/p>\n<h3>Types of expansion vessels<\/h3>\n<p>Expansion vessels for boilers are usually circular, but in modern boilers, they can have different shapes, such as elongated or rectangular. Typically, they are red in color and function like an air chamber. Two main types of expansion vessels can be distinguished: <strong>closed<\/strong> and <strong>open<\/strong>. Closed vessels (the most common) consist of a metal container inside which a rubber membrane separates two compartments: one filled with water and the other with compressed air, which helps maintain stable pressure and ensure balance during water expansion.<\/p>\n<h3>Maintenance of the expansion vessel<\/h3>\n<p>The pressure of the expansion vessel should be checked at least once a year, along with other maintenance operations. If the pressure is below 0.8 bar, the vessel needs to be recharged. To do this, it is necessary to release the residual pressure of the boiler until the pressure gauge reads zero, then unscrew the cap of the vessel valve and use a compressor to bring the pressure back to a value between 0.9 and 1 bar. A well-maintained expansion vessel ensures the proper functioning of the boiler, improving energy efficiency and contributing to significant savings, especially when combined with modern thermostats and <em>green<\/em> energy offers.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"international-product-banner-desktop\" style=\"text-align: center\"><a href=\"https:\/\/www.accasoftware.com\/en\/mep-software\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto\/edificius-mep-en.jpg\" alt=\"Edificius-MEP\" width=\"728\" height=\"160\" \/><noscript><img decoding=\"async\" class=\"lazyload\" src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto\/edificius-mep-en.jpg\" alt=\"Edificius-MEP\" width=\"728\" height=\"160\" \/><\/noscript><\/a><\/div>\n<p>&nbsp;<\/p>\n<div class=\"international-product-banner-mobile\" style=\"text-align: center\"><a href=\"https:\/\/www.accasoftware.com\/en\/mep-software\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto_mobile\/edificius-mep-en.jpg\" alt=\"Edificius-MEP\" width=\"600\" height=\"500\" \/><noscript><img decoding=\"async\" class=\"lazyload\" src=\"\/wp-content\/themes\/enfold-child\/img\/banner_prodotto_mobile\/edificius-mep-en.jpg\" alt=\"Edificius-MEP\" width=\"600\" height=\"500\" \/><\/noscript><\/a><\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A boiler system explained: unveiling its structure, operation, key components, and essential maintenance for optimal performance.<\/p>\n","protected":false},"author":54,"featured_media":37082,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_data_scadenza_evento":"","_evento_nome":"","_evento_data":"","_evento_luogo":"","_evento_cta":"","keyword_en":"boiler components","keyword_es":"","keyword_fr":"","keyword_de":"","keyword_ptb":"","_note_content":"<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\"><colgroup><col width=\"42\" \/><col width=\"543\" \/><col width=\"93\" \/><\/colgroup>\r\n<tbody>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>boiler components<\/td>\r\n<td>140<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>boiler system components<\/td>\r\n<td>110<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>components of a boiler heating system<\/td>\r\n<td>50<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>boiler components and functions<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>boiler components explained<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>boiler main components<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>components of a boiler<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>EN<\/td>\r\n<td>main components of a boiler<\/td>\r\n<td>20<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>FR<\/td>\r\n<td>Composants de chaudi\u00e8re<\/td>\r\n<td>0<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>PTB<\/td>\r\n<td>partes que comp\u00f5e uma caldeira<\/td>\r\n<td>0<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>ES<\/td>\r\n<td>partes de una caldera<\/td>\r\n<td>210<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>ES<\/td>\r\n<td>parte de una caldera<\/td>\r\n<td>10<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>DE<\/td>\r\n<td>Kesselteile<\/td>\r\n<td>0<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>","footnotes":""},"categories":[118],"tags":[5179],"class_list":["post-37079","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bim-and-building-design","tag-newsletter-364"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Which are the key components of a boiler? - BibLus<\/title>\n<meta name=\"description\" content=\"Discover the vital role of a boiler in fuel combustion and heat generation. 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