Download or read book HVAC Industrial Dehumidification written by Charles Nehme and published by Charles Nehme. This book was released on with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: HVAC dehumidification refers to the process of removing moisture from the air inside a building or home using an HVAC system. This is done to maintain an optimal level of humidity in the indoor environment for human comfort and health. Excessive humidity in a building can lead to the growth of mold and mildew, which can cause respiratory problems and other health issues. It can also make the indoor environment uncomfortable, especially during hot and humid weather. HVAC Q & A What is HVAC? HVAC stands for heating, ventilation, and air conditioning. It is a system of technology that controls the temperature, humidity, and ventilation of indoor and restricted spaces. How does HVAC work? HVAC systems typically use a combination of heating and cooling elements, fans, and ductwork to control the indoor environment. The specific components and operation of an HVAC system will vary depending on the type of system and the specific needs of the building. What are the different types of HVAC systems? There are many different types of HVAC systems, but some of the most common include: * Central heating and cooling systems * Split systems * Ductless mini-split systems * Heat pumps * Furnaces * Air conditioners How do I choose the right HVAC system for my home? When choosing an HVAC system for your home, there are a number of factors to consider, such as the size of your home, the climate you live in, your budget, and your energy efficiency goals. It is important to consult with a qualified HVAC professional to get the best advice for your specific needs. What is the best way to maintain my HVAC system? The best way to maintain your HVAC system is to have it inspected and serviced by a qualified professional on a regular basis. This will help to ensure that your system is operating efficiently and safely. You should also change your air filter regularly, according to the manufacturer's recommendations. Short answer: HVAC stands for heating, ventilation, and air conditioning. It is a system of technology that controls the temperature, humidity, and ventilation of indoor and restricted spaces. There are many different types of HVAC systems, and the best way to choose the right one for your home is to consult with a qualified HVAC professional. To maintain your HVAC system, have it inspected and serviced by a qualified professional on a regular basis and change your air filter regularly.

Download or read book Advances in Desiccant Dehumidification written by Vivekh Prabakaran and published by Springer Nature. This book was released on 2021-07-21 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically analyses state-of-the-art technology and research related to desiccant dehumidification. It provides key insights into the current research direction, and presents global research and development interests. It begins by offering a comprehensive review of conventional desiccants and their underlying engineering challenges. Fundamental material characteristic properties and factors critical to the desiccant synthesis are highlighted. The applicability of next-generation advanced materials to address the challenges is documented, and the advantages of desiccant coated heat exchangers are evaluated. Lastly, the potential applications of desiccant dehumidifiers in various energy-connected applications are discussed, and case studies on industrial/building cooling systems are provided. Specifically targeted at HVAC engineers, thermal scientists, energy-engineering researchers, and graduate-level students in the field, the technical content balances fundamental concepts and applications.

Download or read book Handbook of Dehumidification Technology written by G.W. Brundrett and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Dehumidification Technology is a handbook of dehumidifiers and how they work. This manual describes the principles of dehumidification and looks at the domestic and industrial applications of dehumidifiers, along with design considerations for refrigerant dehumidifiers. The use of dehumidification in swimming pools and for food and flower storage is also discussed. This reference guide is comprised of 11 chapters and begins with an introduction to dehumidification, paying particular attention to how it addresses the problems created by high water vapor content in air. The historical development of air drying and the use of psychrometric charts to describe the state of damp air as well as to illustrate ways of lowering the relative humidity of moist air are also considered. The next chapter presents three methods of removing moisture from air: sorbent dehumidification, refrigerant dehumidification, and air-cycle dehumidification. The reader is also introduced to design considerations for refrigerant dehumidifiers, domestic applications of dehumidifiers, installation of dehumidifiers in a swimming pool, and industrial dehumidification. The final chapter is devoted to additional sources of information on dehumidifiers and dehumidification, including journals, professional bodies, and research. This monograph will be a valuable resource for technicians and others interested in humidity control.

Download or read book Experimental Evaluation of Commercial Desiccant Dehumidifier Wheels written by and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Renewable Energy Laboratory is currently characterizing the state-of-the-art in desiccant dehumidifiers, the key component of desiccant cooling systems. The data are being obtained in our HVAC Equipment Test Facility in accordance with the proposed ASHRAE test standard. The experimental data will provide industry and end users with independent performance evaluation and the United States Department of Energy and NREL with the information necessary to assess advances in the energy savings potential of the technology. This paper proposes several figures of merit for evaluating performance. The results of these tests indicate that dehumidification capacity performance parameters can be correlated to process inlet air relative humidity.

Download or read book Humidification and Ventilation Management in Textile Industry written by B. Purushothama and published by CRC Press. This book was released on 2024-02-13 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive guide for professionals in the textile industry. It delves into the intricate balance of moisture and air control that shapes textile production. From enhancing quality to optimizing efficiency, this book is an indispensable resource for the industry professionals.

Download or read book Damp Buildings Human Health and HVAC Design written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Provides a summary of what is understood within ASHRAE about dampness-related health risks in buildings along with suggestions for HVAC system designers that can help avoid such risks as well as a simple and easily recognizable description of dampness that is sufficient to increase the probability of negative health effects and practical quantitative tools and techniques that can alert managers to the risk of a building or an indoor space becoming damp to an extent that affects health in the future"--

Download or read book Experimental Evaluation of Commercial Desiccant Dehumidifier Wheels written by S. J. Slayzak and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book HVAC Psychrometrics Understanding and Optimizing Air Conditioning Systems written by Charles Nehme and published by Charles Nehme. This book was released on with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air conditioning systems play a crucial role in providing comfortable indoor environments, whether it's in residential, commercial, or industrial settings. Understanding the principles of psychrometrics is essential for designing, operating, and optimizing these HVAC (Heating, Ventilation, and Air Conditioning) systems effectively. Psychrometrics is the study of the thermodynamic properties of air and its moisture content. It involves the measurement and analysis of parameters such as temperature, humidity, pressure, and enthalpy to determine the state of air and its ability to hold moisture. These parameters are crucial for designing air conditioning systems that can maintain optimal indoor conditions for human comfort, equipment operation, and various industrial processes. This book aims to provide a comprehensive understanding of psychrometrics and its practical applications in HVAC systems. It explores the fundamental concepts and equations related to air properties, psychrometric charts, and the psychrometric processes involved in air conditioning. Moreover, it delves into the various components and systems that make up an air conditioning system, such as air handlers, cooling coils, refrigeration cycles, and ventilation systems. Optimizing air conditioning systems is a key focus of this book. By leveraging the principles of psychrometrics, engineers and technicians can enhance the efficiency and performance of HVAC systems, resulting in energy savings, improved indoor air quality, and increased occupant comfort. The book covers topics such as load calculations, equipment selection, airflow distribution, humidity control strategies, and system optimization techniques. Throughout the book, real-world examples, case studies, and practical tips are provided to illustrate the application of psychrometrics in different scenarios. Whether you are a HVAC professional, engineer, technician, or someone interested in understanding the inner workings of air conditioning systems, this book serves as a valuable resource to enhance your knowledge and skills. It is worth noting that while this book provides a comprehensive overview of psychrometrics and air conditioning systems, it does not delve into the intricacies of HVAC design and installation. For detailed design guidelines and standards, it is recommended to refer to relevant industry codes, manuals, and regulations. With a solid understanding of psychrometrics and its role in air conditioning systems, readers will be equipped with the knowledge necessary to design, optimize, and maintain efficient HVAC systems, creating comfortable and healthy indoor environments for all. Let us embark on this journey into the fascinating world of HVAC psychrometrics and unlock the secrets of optimizing air conditioning systems.

Download or read book Measured Performance of Residential Dehumidifiers Under Cyclic Operation written by Jon Winkler and published by . This book was released on 2014 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residential construction practices are progressing toward higher levels of energy efficiency. A proven strategy to save energy is to simultaneously increase building insulation levels and reduce outdoor air infiltration. Tight homes require intentional mechanical ventilation to ensure healthy indoor air. Overall, this strategy results in a shift in the mix of latent and sensible space conditioning loads, requiring proportionally more moisture to be removed compared to standard homes. There is currently not sufficient information available at a wide enough range of operating points to design dehumidification systems for high performance homes in hot-humid climates. The only industry information available on dehumidifier moisture removal and energy consumption are performance ratings conducted at a single test condition, which does not provide a full representation of dehumidifier operation under real-world conditions. Winkler et al. (2011) developed steady state performance maps to predict dehumidifier performance at a variety of indoor conditions. However, installed heating, ventilating, and air-conditioning (HVAC) equipment rarely operates at steady state. Part load performance testing of residential dehumidifiers is not mandated by current test standards. Therefore, we tested the part load performance of four residential dehumidifiers in the National Renewable Energy Laboratory's (NREL) Advanced HVAC Systems Laboratory . The part load efficiency of each dehumidifier was measured under 13 cycling scenarios, and combined with NREL field data to develop part load fraction (PLF) performance curves under realistic cycling scenarios.

Download or read book Heating ventilating air conditioning dehumidifying systems written by and published by . This book was released on 1987 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dehumidification in HVAC Systems written by John Murphy and published by . This book was released on 2002 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book How to select the proper HVAC equipment to suit your project written by Charles Nehme and published by Charles Nehme. This book was released on with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preface Selecting the proper HVAC (Heating, Ventilation, and Air Conditioning) equipment for your project is crucial for ensuring energy efficiency, comfort, and cost-effectiveness. This preface will provide an overview of key considerations and steps involved in choosing the right HVAC system for your specific needs. Understanding HVAC Systems HVAC systems are integral to maintaining indoor air quality and thermal comfort. They include components for heating, cooling, ventilation, and humidity control. Common types of HVAC systems include: Split Systems: Separate indoor and outdoor units, ideal for individual room control. Packaged Systems: All-in-one units, typically used in commercial applications. Heat Pumps: Efficient for both heating and cooling, suitable for moderate climates. Ductless Mini-Splits: Offer flexibility without ductwork, ideal for retrofits or specific zones. Key Considerations Project Scope and Requirements: Size and Layout: The size and layout of the space influence the type and capacity of the HVAC system needed. Larger or multi-story buildings may require more complex systems. Usage: Determine the primary use of the space (e.g., residential, commercial, industrial) and any specific needs such as server rooms, labs, or manufacturing areas. Climate: Local climate conditions significantly affect HVAC requirements. Hot and humid climates demand efficient cooling and dehumidification, while colder regions prioritize heating. Energy Efficiency: Look for systems with high Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF) ratings. Energy-efficient systems reduce operating costs and environmental impact. Consider systems with variable speed technology for better energy management. Budget: Balance initial investment with long-term operational costs. High-efficiency systems may have higher upfront costs but lower ongoing expenses. Building Codes and Regulations: Ensure compliance with local building codes, standards, and regulations. This includes safety standards, energy efficiency mandates, and environmental regulations. Indoor Air Quality: Choose systems with good filtration and ventilation capabilities to maintain healthy indoor air quality, especially in spaces with high occupancy or specific air quality requirements. System Design and Integration: Proper design and integration with existing building systems (electrical, plumbing, etc.) are crucial for optimal performance. Consider consulting with HVAC professionals or engineers. Future Scalability: Plan for potential future expansions or modifications. Select systems that can be easily upgraded or expanded. Steps to Select the Proper HVAC Equipment Assess the Building Load: Conduct a load calculation to determine heating and cooling requirements. This includes considering insulation, windows, occupancy, and internal heat gains. Evaluate Different HVAC Systems: Compare various systems based on efficiency, capacity, and suitability for the project's specific needs. Consider Technological Features: Look for modern features such as smart thermostats, zoning capabilities, and remote monitoring for enhanced control and efficiency. Consult with Professionals: Engage HVAC contractors, engineers, or consultants to review your plans and provide expert recommendations. Review Manufacturer Warranties and Support: Choose reputable manufacturers that offer robust warranties and reliable customer support. Conclusion Selecting the proper HVAC equipment is a multifaceted process that requires careful consideration of the project's specific requirements, climate, energy efficiency, and budget. By following a systematic approach and leveraging professional expertise, you can ensure that your HVAC system will provide optimal performance, comfort, and cost-efficiency for your project.

Download or read book Air conditioning System Design Manual written by Walter T. Grondzik and published by Elsevier. This book was released on 2007 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Air Conditioning Manual assists entry-level engineers in the design of air-conditioning systems. It is also usable - in conjunction with fundamental HVAC&R resource material - as a senior- or graduate-level text for a university course in HVAC system design. The manual was written to fill the void between theory and practice - to bridge the gap between real-world design practices and the theoretical calculations and analytical procedures or on the design of components. This second edition represents an update and revision of the manual. It now features the use of SI units throughout, updated references and the editing of many illustrations. * Helps engineers quickly come up with a design solution to a required air conditioning system. * Includes issues from comfort to cooling load calculations. * New sections on "Green HVAC" systems deal with hot topic of sustainable buildings.

Download or read book 1997 ASHRAE Handbook written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FeasibIlity Study and Design of Natual Dehumidification Method Using Desiccant for Model House written by Mohammed Amirul Faeez Bin Norazmi and published by . This book was released on 2016 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: This case or research is feasibility study and design of natural dehumidification method using desiccant for model house. Desiccant dehumidification is function to improvise the nowadays heating, ventilation and air conditioning (HVAC) industry became well. Desiccant dehumidification cooling system improvise and increase the performance of vapour compression system that use in coventation air conditioning.The desiccaent dehumidification system have two type which is solod and liquid desiccant cooling system. Desiccant dehumidifier based evaporative coolers can reduce air conitioning operation cost because since the energy need to power the desiccant cooling system is small and the source of this required acn be renewable (solar energy, waste heat, natural gas). This technology become increase attractive due to its high effcient used of low-grade energy and its effectiveness in dehumidification that cause energy efficaiency of air conditionning increased .The equation is used to calculate the data for psychrometric condition and then analyse th data to plot the graph to show the result of our caculation.

Download or read book High Efficiency Liquid Desiccant Regenerator for Air Conditioning and Industrial Drying written by Andrew Lowenstein and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 2 quads of fossil fuels are used each year for moisture removal. This includes industrial and agricultural processes where feedstocks and final products must be dried, as well as comfort conditioning of indoor spaces where the control of humidity is essential to maintaining healthy, productive and comfortable working conditions. Desiccants, materials that have a high affinity for water vapor, can greatly reduce energy use for both drying and dehumidification. An opportunity exists to greatly improve the competitiveness of advanced liquid-desiccant systems by increasing the efficiency of their regenerators. It is common practice within the chemical process industry to use multiple stage boilers to improve the efficiency of thermal separation processes. The energy needed to regenerate a liquid desiccant, which is a thermal separation process, can also be reduced by using a multiple stage boiler. In this project, a two-stage regenerator was developed in which the first stage is a boiler and the second stage is a scavenging-air regenerator. The only energy input to this regenerator is the natural gas that fires the boiler. The steam produced in the boiler provides the thermal energy to run the second-stage scavenging-air regenerator. This two-stage regenerator is referred to as a 1?-effect regenerator. A model of the high-temperature stage of a 1?-effect regenerator for liquid desiccants was designed, built and successfully tested. At nominal operating conditions (i.e., 2.35 gpm of 36% lithium chloride solution, 307,000 Btu/h firing rate), the boiler removed 153 lb/h of water from the desiccant at a gas-based efficiency of 52.9 % (which corresponds to a COP of 0.95 when a scavenging-air regenerator is added). The steam leaving the boiler, when condensed, had a solids concentration of less than 10 ppm. This low level of solids in the condensate places an upper bound of about 6 lb per year for desiccant loss from the regenerator. This low loss will not create maintenance problems nor will it significantly increase operating expenses. An energy balance on the boiler showed that heat loss through the insulated jacket was 10%. This value is much higher than the 2% to 5% that is typical of most boilers and indicates a need to better insulate the unit. With insulation that brings jacket losses down to 5%, a 1?-effect regenerator that uses this boiler as its high-temperature stage will have a gas-based COP of 1.05. The estimated cost to manufacture a 300-lb/h, 1?-effect regenerator at 500 units per year is $17,140. Unfortunately, the very high cost for natural gas that now prevails in the U.S. makes it very difficult for a gas-fired LDAC to compete against an electric vapor-compression air conditioner in HVAC applications. However, there are important industrial markets that need very dry air where the high price of natural gas will encourage the sale of a LDAC with the 1?-effect regenerator since in these markets it competes against less efficient gas-fired desiccant technologies. A manufacturer of industrial dehumidification equipment is now negotiating a sales agreement with us that would include the 1?-effect regenerator.

Download or read book Industrial Heat Pump Assisted Wood Drying written by Vasile Minea and published by CRC Press. This book was released on 2018-08-06 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses conventional as well as unconventional wood drying technologies. It covers fundamental thermophysical and energetic aspects and integrates two complex thermodynamic systems, conventional kilns and heat pumps, aimed at improving the energy performance of dryers and the final quality of dried lumber. It discusses advanced components, kiln energy requirements, modeling, and software and emphasizes dryer/heat pump optimum coupling, control, and energy efficiency. Problems are included in most chapters as practical, numerical examples for process and system/components calculation and design. The book presents promising advancements and R&D challenges and future requirements.