DOWNLOAD Workshop on Smart Air Flow Management July 7 2017 PDF
250 is 1: An HVLS Fan is equivalent to replacing 250 residential ceiling fans. A residential ceiling fan can produce an air flow equal to 3,200 CFM (12’ Ceiling Height) whereas an EPOCH HVLS fan can produce an air flow in excess of 400,000 CFM (24’ Ceiling Height).[/caption]
This workshop aims at imparting knowledge and techniques for understanding HVLS Fans and managing smart airflow through HVLS fans. The workshop answers the following:
We have known for many centuries that all buildings have a soul or Vastu Purusha. That soul needs deep nurturing to have immense benefits for life, materials and energy preservation.
This workshop is culmination knowledge in the field of Smart Air Flow Management and its impact on life, materials and energy preservation. Air flow also represents the flow of energy. A flow of energy is the essence of our universe and manifests in various emotional, physical and spiritual forms. Construction of your building, its intake of energy, its output of energy and the connecting dots in-between tell a story of its soul. You want that soul to be healthy and having an output of positive energy which is several times more than the intake.
The thermal signature and reaction to the external climate are different for different building types and materials. The workshop will visit some of the common cases of heat sources inside a building and how it affects the comfort levels and life of materials and output of positive energy.
Concrete construction or pre-fabricated steel sheds or a combination of materials can yield a complex building structure. Building materials can further consist of:
Humans have constructed buildings based on their functional use. Some of the building types are listed below:
Each building represents a unique structure and hence a unique energy signature. An intelligent placement of HVLS fans can greatly alter the energy signature of the building unleashing immense positive energy.
Vastu Shashtra and the Influence of Planets on Architecture
The Hindu “Science of Architecture” is vast and comprehensive. We discuss the relevant aspect of Vastu Shastra on the life of comfort of humans, materials and energy.
Planets influence the Earth and hence on the buildings and persons. We live in a balanced world. The delicate balance is paramount in the preservation of life on Earth. Our ancestors have long recognised this balance and have sought to replicate this balance in the design of our buildings.
The lord of air Vayu can help maximise the creation of positive energy when it can pass through smartly in the buildings. Vastu Shastra provides important principles and clues on achieving that balance and today with the use of technology we can maximise these benefits.
Here again, a smart placement of HVLS fans can enhance the balance of life and energy.
There are many ethical, moral, economic, social and business reasons why energy efficiency is important for your building. Some of them are listed below:
Energy efficiency of a building depends on many factors. However, one of the most important factors is the external climate and how to use the external climate towards an advantage for achieving a high energy efficiency of the building without compromising the comfort and life of humans and materials inside.
Older buildings have been designed with the materials and technologies of their times and hence tend to be more energy inefficient that their modern counterparts. Newer buildings use newer materials, technologies and techniques to achieve energy efficiency.
Smart air flow management using HVLS fans and Vastu Shastra can play an important part in defining energy efficiency of an old as well as new building
Indoor air quality can be improved using HVLS fans
Allergies have steadily increased for the humans in the last few decades. This steady increase though attributable to several factors could have air quality as an underlying cause.
Our buildings have continued to be built for temperature control. We have become more sedentary in life and have appreciated increased luxury and comforts of temperature controlled buildings. That has posed a new problem: the quality of indoor air.
With closed buildings, we create an ecosystem inside which can lead to dangerous diseases. The quality of indoor air is affected by various components of the building elements: carpeting, water, chemicals, temperature, humidity etc. Open buildings allow for fresh air which takes away all the pollutants and keep the building and people healthy. With the new closed eco-system, we experience tremendous pressure on resources as we need to avoid contaminants, upkeep ventilation, heating and air-conditioning systems, keep out moisture, dampness, flooding etc.
Here, a strategic placement of HVLS fans can greatly improve the air flow and quality of indoor air.
HVLS Fans can help reduce the sweating slab syndrome
Building floors can sweat. They cause release of moisture from warm air when the floors are cold and air is warm. The most economical solution is a gentle mix of air through a smart airflow strategy. The Workshop will discuss SSS syndromes and how to avoid them.
Condensation occurs when warm, moist air contacts a cold surface. As the air becomes colder, it loses its ability to store moisture. In the spring and fall, temperature swings and the accompanying condensation on concrete floors can cause problems in workplaces worldwide, resulting in serious worker risk, operational issues and product loss.
Air flow can reduce this and avoid the sweating slabs. However, in large buildings, consistent airflow is possible only by using HVLS fans.
Airflow is the flow of energy in a building
Airflow is the lifeblood of a building. It needs to be gentle and with uniform thermal signature at a right temperature. When airflow is disrupted, you lower the life and comfort of humans and materials.
Air flow with absolute comfort is always a challenge to achieve. Older buildings normally have poorer and uncomfortable air low as compared to the newer buildings. Efficient ventilation is another challenge and regulating temperature in the relatively large building is often difficult as high ceilings do not help generate airflow.
The temperatures vary greatly throughout a big space causing great discomfort and loss of precious energy. Warehouses, factories, agricultural buildings, and other industrial building all can eat up a lot of air conditioning without any effectiveness. Even with the use of HVAC blowing cool air, it is not possible to achieve constant temperature throughout. Drafts, lighting, insulation, and architectural layout create mini-climate zones which can suck a great deal of energy without resulting in significant benefit.
HVLS fans, when used with other HVAC devices or equipment, can greatly help alleviate the problem. There are instances where HVLS fans alone can do the magic and provide a uniform laminar flow with relatively stable temperature zones. In other instances, HVLS fans can be more effective when used with other HVAC equipment or ventilators or fans.
God made this Earth with a delicate balance. The life of buildings also depends on a delicate balance which is well-appreciated in Vaastu Shastra.
The basic industrial building ventilation scheme consists of an air supply on one side of the building and exhaust openings on the other. The building is designed to allow the air to move through it, allowing the air within the building to mix and refresh. However, in practice, what usually happens is that the airflow takes the path of least resistance through the building leaving much of the air stagnant and unaffected. As a result, contaminants that might otherwise be removed, remain in the building.
When an HVLS fan is introduced, all the air is thoroughly mixed. This means that the fresh intake air reaches the entire space, and the contaminants that were previously settled in the far corners of the building are mixed and lifted to the exhaust opening. HVLS fans help air-moving systems by making it more effective and efficient. This type of ventilation is called dilution because the contaminants cannot stay in concentrated stagnant pockets when the air is mixed. Fresh air dilutes the concentrated contaminants, controlling airborne health hazards and odours.
HVLS Fans can be very cleverly combined with Self-Ventilators
In hot Indian workshops, simply installing an HVLS fan may not help. In fact, it could result in more discomfort for the workers. One solution is shown in the figure above couples the self-ventilators or turbo ventilators with an HVLS fan to have a great effect in removing heat from the building.
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Life of Your Goods can be impacted by poor storage conditions
Goods and machinery are affected by the weather conditions. Buildings may not provide the most favourable conditions for storage of the goods and machinery. To increase their longevity, it is important to understand how to create favourable conditions through smart airflow management.
Temperature, humidity, air flow, contaminants etc. can greatly affect your goods. Some of these effects can be minimised if we can allow the buildings to breathe properly.
Large buildings can kill workers' productivity because of uncomfortable working conditions
Worker productivity is the most important asset for a manager or a business owner. Having unfavorable climatic conditions can adversely affect the output of the workers. Not only one needs to care for the emotional balance but also the physical nature of things around a worker.
Positive emotional and physical environment are needed to create a positive flow of energy. A positive emotional environment is not possible without creating a positive physical environment first.
Indian factories and workshops are not known to provide a positive physical environment. We are used to the grind without any complaints even at the risk of injury. With the current state of technology and a small investment, such an environment can be made positive with 10x benefits in output and a much more positive emotional environment for the workers.
Airflow defines the energy flow of a building. A healthy building like a healthy human being is healthy all over and not just in parts of the building. So, it is critical to understand smart airflow management. Smart airflow management is about the balance of energy within a building. Achieving a balance is critical.
Whether it’s done through a stand-alone heating, ventilation and cooling (HVAC) system, a set of conventional ceiling fans, or multiple floor fans, traditional methods of moving air in many commercial buildings and warehouses often fall short when trying to maximise airflow and employee productivity. That’s why a growing number of decision-makers look to high-volume/low-speed (HVLS) ceiling fans, which maximise the efficiency and performance of air movement and — as a result — help cut energy usage and create more comfortable and productive working environments year-round.
Air from HVAC equipment moves in layers, horizontally and vertically. Various fans can help mix the air locally but not building wide. None of the noisy ceiling or floor fans has the ability to create a mixing bowl and breaks up the layers. Hence the energy flow of the building does not change significantly.
The HVLS fans move air from the height of the building to the floor creating a column of air which mixes all the air quite effectively. Warm air pushed against the walls rises above the blades of the HVLS fans to be pushed back again to the floor. This phenomenon can create a non-laminar air flow which can be effective in achieving cooling. Such a phenomenon can also cause great discomfort in warm climates where temperatures are already high and air movement will make the deteriorate the comfort levels.
A high-volume low-speed (HVLS) fan is jumbo ceiling fan with a huge diameter. Because of their large diameter ranging from 6-ft to 24-ft-ft, HVLS fans need to move slowly. Fast rotation of these fans will require a lot of energy with little benefit (see figures below). A graph below shows the torque requirement for blade sizes ranging from 6-ft to 24-ft. As can be seen, torque requirements go up substantially for the fans as the diameter is increased. A 6-ft fan may need only 2 Nm at 60 rpm whereas a 24-ft fan would require 120Nm at that rpm.
Torque vs. Speed Data for Epoch HVLS Fans
High volume low speed (HVLS) fans normally come with 2 to 8 blades and range from 6-ft to 24-ft in diameter. The blades are attached horizontally from to a hub mounted on a motor shaft. The HVLS fans operate at a speed from 50 to 250 rpm.
Power delivered by fans rises as the cubic power of the diameter. To limit the power and maintain air flow, the speed is progressively reduced for larger diameters as can be seen in the graph below. Normally based on the number of blades and blade design, most fans are rated below 1.5 hp (1125W).
Power Delivery by Various Diameter Fans.
In an industrial building, air conditioning is often cost prohibitive or impractical. Fans installed in spaces like warehouses, barns, hangars and distribution centres prevent heat stress, increase worker comfort and the productivity of both workers and livestock. In commercial spaces, where air conditioning is more common, increased air movement from HVLS fans can cost-effectively augment occupant comfort or prevent stratification. Typical commercial applications include shopping malls, churches, office buildings fitness centres and educational centres like schools, colleges, academies etc. A critical concern for many commercial spaces, like schools and libraries, is sound sensitivity and quiet operation. In contrast, industrial spaces have a median dB of 85 or higher and prioritise air movement (effective in combating heat stress) over a silent operation. Epoch HVLS fans produce less than 35 dB of sound resulting in elegant and smooth performance.
Today many technologies are available to generate airflow. In this workshop, we will look at the technologies for HVLS fans. Today, the majority of the HVLS fans are based on geared induction motors and VFD inverters. Few of the HVLS fans are available with BLDC (Brushless Less Direct Current) technology. We will introduce the participants to PMSM (Permanent Magnet Synchronous Motor) technology and its tremendous benefits over BLDC and Induction motor drives.
Comparison of Various Technologies
Induction motors were invented more than 130 years ago and have been our industry’s workhorse for a long time. Inductions motors are inherently bulky, inefficient with a very narrow range of operation. Brushed DC motors were invented 150 years ago and Brushless DC motors came into existence in and around 1962, achieving prominence in the 1980s. However, brushless DC motors are now relegated to simple and less demanding applications because of various inherent limitations. PMSM (permanent magnet synchronous motors) have steadily gained prominence because of the advent of new materials and algorithms resulting in much better form factor and efficiency.
We are sending the gearbox to outer space
In today’s world, there is no need of an induction motor with a gearbox or a brushless DC motor to drive HVLS fans. We are sending the gear box to outer space.
Falco eMotors develops out of the box, unconventional, innovative and highly effective Brushless Motor and Inverter Solutions. Falco eMotors is headquartered out of Dulles, Virginia in the US with manufacturing and research and development in Pune, India.
What do we do?
Falco has motors in production in the areas of light electric vehicles such as electric bikes and industrial HVLS fans. Falco’s core competencies are in the areas of motor, inverter, mechanical, firmware design, regulatory compliances and application development.
Our Core Competencies
Rakesh Dhawan - President & CEO of Falco eMotors
Rakesh Dhawan founded Strategic Technology Group in 2009 and Falco eMotors Inc in 2011. He is a twenty-seven years veteran of motors and motor drive Industry. He has developed a critical understanding and published on a wide range of motors, motor drives, high-frequency electromagnetic components, electric vehicles and switch mode power systems. He has co-authored over 25 publications in various refereed journals and conference proceedings and is an inventor on 11 issued or pending US patents. He has served on the Technical Committee of the Applied Power Electronics Conference (APEC). He received the B. Tech (Electrical Engineering) degree from Indian Institute of Technology (IIT), Kharagpur, India. He received his MS degrees from the University of Minnesota under the tutelage of Power Electronics pioneer Prof. Ned Mohan. He received his MBA from Old Dominion University.
He has been directly responsible for over twenty-five successful product launches in his career many of them involving brushless permanent magnet motor systems. Rakesh has conducted several workshops in the recent past in the field of motors and motor drives. His interests include brushless permanent magnet motor systems, light electric vehicles, electric bicycles, switch mode power supplies, solar inverters, simulation, statistics, project management and new and ultra-fast product development methodologies. Rakesh is a high energy individual with a difference; he combines technology excellence, leadership and professional management skills with his inborn entrepreneurial instincts.
Rakesh is a member of IEEE and the Entrepreneur’s Organization (Washington-DC Chapter) and is very keen on nurturing innovation and entrepreneurial talent in the field of technology development and management.
Some of Our Customers
Price exclusive of all taxes:
Early Bird Price:
Industry ₹ 2,995/-,
Students: ₹ 995,
Faculty: ₹ 1,995 (before June 30)
Regular Price:
Industry: ₹ 4,995,
Students: ₹ 1,495,
Faculty: ₹ 2,495 (after June 30)
Please send email to Ms. Suvarna Kadlag at EpochFans@falcoemotors.com with the following details:
Full Name,
Company Name,
Address,
Phone Number and
Email Address.
The seats will be reserved after receiving payment. Payment by check/ or bank transfer in advance in favour of
Falco eMotors Pvt. Ltd.
A-105, H-Block, Near Bharat Gas Agency (Morwadi Court),
MIDC Pimpri, Pune-411018.
Call us at: +91 - 20 69332255, 20 69332266
Date and Venue:
July 7, 2017
SPREE Hotel, Near Morwadi Court, Pune, Maharashtra
Cancellation Policy:
If you believe it necessary to cancel your registration, we will issue a full refund minus a ₹1,000 administration fee for cancellations received in writing at least ten business days before the event. The registration fee is non-refundable for cancellations made less than ten days before the event. In those cases, you may transfer your registration fee to a substitute person to attend. Those who do not cancel and do not attend are responsible for the full registration fee.
