Energy Efficiency In Fans And Pumps PDF

ENERGY EFFICIENCY IN FANS AND PUMPS AZRA SAYAN 21050711034 KAAN BERK ÇELİK 20050711015 Types of Fans Centrifugal Fans: Used in HVAC systems; effective for high-pressure applications. Axial Fans: Suitable for high flow rates; commonly used in residential and commercial ven...

ENERGY EFFICIENCY IN FANS AND PUMPS AZRA SAYAN 21050711034 KAAN BERK ÇELİK 20050711015 Types of Fans Centrifugal Fans: Used in HVAC systems; effective for high-pressure applications. Axial Fans: Suitable for high flow rates; commonly used in residential and commercial ventilation.  Residential Applications: Applications of Central HVAC circulation fans Ceiling fans for air circulation Fans Exhaust fans in kitchens and bathrooms Window and through-the-wall air conditioners  Commercial Applications: Applications of Air handling units (AHUs) for ventilation Fans Exhaust fans for kitchens and industrial processes Packaged terminal air conditioners (PTACs) Cooling tower fans for heat rejection Energy Consumption Residential Sector: Commercial Sector: HVAC fans account for 79% of total fan-related Fans account for 56% of total motor energy energy consumption. consumption. Circulation fans for furnaces are the largest Clean air ventilation fans are major single load, consuming significant energy contributors, consuming over 2 quads of year-round. energy annually. Energy Saving Opportunities Fan Motors and Controls: Advanced Motors: Upgrading to Brushless DC (BLDC) motors can improve efficiency by 20-30%. Variable Speed Drives (VSDs): Implementing VSDs allows fans to operate at optimal speeds, reducing energy consumption by up to 40%. Energy Saving Opportunities Blade Design and Selection: Aerodynamic Blade Design: Utilizing advanced blade designs can enhance efficiency by 15-30%. Backward-Inclined (BI) Blades: Switching from forward-curved to backward- inclined blades can improve efficiency significantly. Energy Saving Opportunities Fan System Optimization: Right-Sizing Fans: Ensuring fans are appropriately sized for their application can yield energy savings of 5-20%. Duct Sealing: Sealing duct leaks can reduce fan power consumption by 20-40%, enhancing overall system efficiency. Energy Saving Opportunities Smart Controls: Occupancy Sensors: Integrating occupancy sensors can optimize airflow based on real-time demand, potentially saving 10-30% of energy used by fans. Maintenance Practices: Regular maintenance of fan systems, including cleaning and checking for wear, can prevent energy losses due to inefficiencies. Types of Pumps Centrifugal Pumps: The most common type used in residential and commercial applications, they operate by converting kinetic energy from a spinning impeller into pressure. Positive Displacement Pumps: Used for specific applications, but less common in building systems due to higher costs and maintenance.  Hydronic Heating: Circulators are used in hot water boilers to distribute heat. Residential Domestic Water Supply: Pumps are used for hot and cold Applications water applications, including recirculation loops in larger homes. Pool Pumps: Essential for maintaining water circulation and cleanliness.  Commercial Applications: HVAC Systems: Pumps circulate water for heating and cooling systems, including boilers and chillers. Commercial Potable Water Supply: Used in buildings without municipal connections, often for high-rise Applications applications. Industrial Processes: Pumps are used in various industrial applications, including cooling and heating systems  Energy Consumption Residential Sector: Residential pumps Commercial Sector: Commercial pumps consume approximately 0.4 quads of primary consume around 0.5 quads of primary energy, energy annually, accounting for about 7% of representing a significant portion of energy use total residential energy consumption. in HVAC and water supply systems. Energy Saving Opportunities Pump Motors and Controls: Variable Speed Drives (VSDs): Implementing VSDs can reduce energy consumption by allowing pumps to operate at optimal speeds based on demand. Estimated savings potential is around 0.1 quads annually for commercial applications. Upgrading to High-Efficiency Motors: Switching to permanent magnet motors or ECMs can improve efficiency by 10-20%, leading to significant energy savings. Energy Saving Opportunities Pump Design Improvements: Hydraulic Redesign: Enhancing pump designs for better hydraulic performance can yield energy savings of approximately 4%. This includes optimizing impeller designs and reducing frictional losses. Right-Sizing Pumps: Ensuring pumps are appropriately sized for their applications can lead to energy savings of 20%. Oversized pumps often operate inefficiently, leading to increased energy consumption. Energy Saving Opportunities System Design and Maintenance: Optimized Piping Configurations: Using larger pipes and advanced fittings can reduce frictional losses, potentially saving 15-20% in energy consumption. Regular Maintenance: Implementing a proactive maintenance schedule can prevent energy losses due to wear and tear, ensuring pumps operate at peak efficiency. Energy Saving Opportunities Connected and Smart Pump Systems: Integration with Building Management Systems: Connected pumps can be monitored and controlled remotely, allowing for optimized operation based on real- time data. This can lead to significant energy savings through demand response strategies. Behavioral Changes: Educating users on optimal pump operation and maintenance can further enhance energy savings. Common Places to Apply Efficiency in Pump or Fan Systems Pressure switch control - if your Level control - in some pump system has intermittent demand, systems, you can set levels so they you can install a pressure switch operate only when necessary. control to turn it off when not needed. Size - a pump or fan that’s the Remove unnecessary wrong size for the system can circulation - isolating loops that waste a lot of energy. Some unnecessarily circulate heating or systems change over time, making cooling water or air, reduce power well-specified systems inefficient. consumption and thermal load.  When To Replace a Pump or a Fan? Prepare early to replace. Time Noise, vibration, heat and Choosing right size is important. A wasted means energy is wasted. performance are indications to big fan wastes energy. decide the time for replacing.  1. Switch off the system Assess and analyse your operating process. Switch off pumps and fans when not needed to reduce operation costs. 2. Install timers and operational controls Ways to Reduce Timers and operational controls can Maintenance Costs automatically turn on and off the motor that drives pumps and fans. 3. Install variable speed drives Variable speed drives adjust the speed of the motor to match the load required for the task. Reducing the motor speed by 20% can lower your motor operating cost by up to 50%.  4. Regular maintenance Schedule regular maintenance on pumps and fans to ensure consistent capacity and energy efficiency. Regularly change or Ways to Reduce trim the impeller on pumps and fans to improve the efficiency. Maintenance Costs Check for leaks, flow rate, pressure. 5. Improve motor efficiency A motor is part of a pump or fan. Motors Pumps and fans require motors to work. So its counted when considering their efficiency. Thanks for Listening Referances Reduce pump and fan costs in your business, www.sustainability.vic.gov.au Fan and Pump Technology Overview and their Energy Saving Opportunities, Elie Tawil, P.E., LEED AP, www.cedengineering.com Saving energy with pumps and fans, motor.feld.cvut.cz Pumping and Fan Systems, genless.govt.nz