Article
Why Combined Heat & Power Systems Need the Certainty of Schebler
Combined Heat & Power (CHP) systems, also known as cogeneration systems, produce electricity and useful thermal energy (such as heat or steam) from a single fuel source. These systems are more efficient than traditional power plants, which only produce electricity and waste a significant amount of heat. For example, the total fuel efficiency of a CHP system can reach 80% versus a maximum of under 50% for separate heat and power. Economizers, or heat recovery units (HRUs), capture the heat and repurpose it for water heating or other applications.
You’ll find CHP systems in industrial facilities, hospitals, universities and other large buildings where there is a consistent demand for both forms of energy. These systems provide several benefits — they can reduce a building’s energy costs, lower its greenhouse gas emissions and increase its energy reliability. However, the generated heat must be exhausted safely. Without proper venting, the system can introduce a range of hazards.
The Challenges of CHP System Venting
Due to some unique challenges, CHP systems can be harder to implement and operate than conventional separate heat and power setups. Those challenges include the following.
Environmental and Safety Risks
CHP systems must meet local air quality standards, which can be especially challenging for certain fuels. Poor sealing or leaks — which may be found in poorly built CHP systems — can cause dangerous exposure for personnel and may pose fire risks when near combustible materials. These exhaust gases often contain toxic emissions, such as CO, NO2, and other pollutants.
Integration with Existing Infrastructure
CHP units, heat recovery systems and fuel storage all require physical space, which may be limited in an existing facility. Retrofitting an existing facility can be complex; piping, electrical connections and control systems all may need significant redesign.
Routing Complexity
Custom routing is generally required, which may involve bypass dampers and multi-directional dampers (e.g., T-junctions with selectable paths). Any complex design introduces higher costs and additional leak risks. Improperly supported systems (e.g., with all-thread or uni-strut) can sag or crack.
Component Fatigue
Thermal expansion causes stress on joints and welds, risking leaks and carbon monoxide exposure over time. Additionally, grease odor soot builds up due to vibration and internal expansion, further threatening equipment longevity and performance.
The Schebler Combined Heat & Power Advantage
At Schebler, each of our CHP systems effectively manages high-temperature exhaust while streamlining installation and meeting strict industry standards.
Our CPR Line, for example, is ideal for critical generator exhaust applications due to its robust, zero-leak design. Featuring 2” to 4” of insulation, and available in a single wall model when requested, the CPR series is engineered for thermal stability and corrosion resistance and is built to stand up to thermal expansion and mechanical stress while providing strict compliance with regulatory standards. UL listings include UL 103 and UL 2561. Learn more about our CPR series here.
We understand “one size fits all” doesn’t work with venting and exhaust systems. Unlike our competition, we specialize in crafting customized systems that meet our clients’ most challenging cogeneration requirements and setups, including those with limited space and requiring complex routing. Our expertise ensures reliability at every stage, making CHP operations cleaner, safer and more cost-effective.
Contact us today to get more information about our CRP series and other chimney solutions.
