Tuesday, May 30, 2017

Low Flow Diffusers & Changing Energy Codes

Titus’s energy-saving TJD diffuser also satisfies comfort, functionality and aesthetics needs

 
Ventilation (outside) air has traditionally been delivered through the primary cooling system. Utilizing one set of ducts and air outlets to provide both comfort conditioning and ventilation. The state of Washington’s latest energy code revisions now specify Dedicated Outdoor Air Systems (DOAS) with parallel air distribution to the space for the majority of compliant systems. What does this mean for the construction community and building occupants? In conventional systems the ventilation air is a part of the overall supply air flow. The additional air provided adequate velocity to evenly distribute and mix the outside air over the entire space. Airflow rates of DOAS alone do not provide adequate velocity at the air outlets to distribute the outside air. The result is excessive vertical projection (dumping) from the air outlets.


 
The TJD (patent pending) distribution provides high mixing at low airflows to provide superior coverage and throw. While most air outlets typically work at 100 CFM, TJD performs at 20 to 50 CFM and throws air to 9 feet at 50 feet per minute. The high mixing increases the mass of the discharge isovel and its corresponding throw, providing both uniform temperatures throughout, while delivering outside air equally throughout the occupied space. This equates to ADPI of 97 for an airflow of 26 CFM in a 120 SQFT Room. The ADPI increase to 100 at 47 CFM. The TJD is capable of distributing outside air effectively down to as low as 0.06 CFM/SQFT Minimum Ventilation Rate per ASHRAE 62.1-2016.


That means engineers can both meet the latest codes and reduce air volume dependence, and building owners can achieve noticeable energy and operations savings while ensuring occupant comfort.


TJD is best suited in areas where low airflow codes are applicable such as smaller spaces with low equipment and external loads. TJD incorporates Titus’s popular architectural plaque diffuser, giving it a polished look. Mark Costello, Titus Product Manager stated "Forward-thinking customers can get ahead by using a solution specifically designed to meet industry codes and achieve functional, aesthetic and comfort needs."


TJD’s release comes on the heels of Titus’s 2017 AHR Innovation Award win in the Ventilation category for its Helios diffuser, the industry’s first ambient light-powered digital diffuser. For more information on TJD, Helios and other air management products from Titus, please visit https://www.titus-hvac.com/Products/Diffusers/TJD

Wednesday, May 17, 2017

Learn At Your Own Pace - Titus eLearning Website


We live in a much different time now compared to when we were kids. Growing up, schools were the primary resource for learning and for the vast majority of us teachers only taught inside the classroom. Computers were big and bulky and never left the school either. Textbooks had bookcovers to protect them from the weather and sometimes your backpack weighed too much to carry home.


Fast forward to present day and learning has greatly changed. There are an abundance of options to conventional learning methods of the past. Many schools now rely exclusively on tablets to serve as their books of today. The creation of the internet allows information to be shared in an instance. Computers, laptops, tablets, and even smartphones are now portable and have the ability to stream and store video content. We are a more mobile and versatile society today - our schedules are more fluid than the ones our parents worked in the past. Our options to learning have to be just as adaptable as time is a precious commodity now and we utilize every second more efficiently.

The Titus eLearning Website - http://www.titus-elearning.com/ - allows any industry professional to learn at their own pace while earning PDH credits along the way. (Please note that requirements for credits may vary by state). The courses are prerecorded and the video segments range from 3-7 minutes in length. All you need to do to begin is go through the registration process. Once completed, simply select and watch a webinar for one the subject areas already loaded on the site and you are on your way to learning more about HVAC. Additionally, if you require additional time to watch because something comes up, stop watching and when you come back the video begins exactly where you left off.

Our Course Catalog has a wide array of subject matter to choose from too. Have an interest in Healthcare/Critical Environments or Terminal Units, we’ve got the course for you. Do you need a refresher in Basic HVAC Design or Underfloor, those courses are loaded as well. New classes are always in development and we hope to double the course selection by the end of 2017 with fresh new content.

One of the best features about the eLearning Website is that it applies to all industry professionals. It was designed as an enhanced learning tool for all to use and benefit from - length of service or experience in the field isn’t a factor. If you have 0-5 years of experience or 35-50 years of experience, the website has information designed to teach and inform as if you were sitting in a consulting engineering seminar session. To check for understanding, there are 10 question quizzes to assist in reinforcing what was presented. During the quiz, if an incorrect response is noted the system will display the video slide in which the correct reply was discussed and request the user to retake the quiz.   

We live in a 24/7 world and the eLearning Website is the 24/7 solution for HVAC training exactly how you need it - On Your Own Terms! Learn what you need, when you need and let us partner with you through the process. We hope you are as exited about it as we were to launch it.

Existing Courses in Catalog:

Basic HVAC Design
  • Standards Update | Air Distribution
  • Exposed Ductwork
  • Ductwork Design

Healthcare | Critical Environment
  • Operating Room Design

Terminal Units
  • T.U. Troubleshooting
  • Heating Coils

Underfloor
  • UFAD Applications

Green Building
  • Chilled Beam Systems

Fan Coils | Air Handlers
  • Water Source 

Friday, March 31, 2017

Innovative Uses of 3D & VR Technology




The Future is Here with Titus VR
Virtual Reality (VR) has been around for years in the video game industry creating new worlds for gamers to explore. The technology’s potential for training has never truly been tested before until now.

Titus VR is the latest innovation to hit the HVAC industry and allows us to showcase Titus products, services and teach complete systems from a whole new perspective. With the ability to transport viewers into any building space to see how systems work, our VR will transform how HVAC industry professionals experience training. Imagine fully understanding an occupied space and the system designed to provide the comfort – it’s potential, limitations and inner workings – before it’s even built. That’s the reality of VR - the virtual world can create so many possibilities where the only limitation is your imagination. Link - https://www.titus-hvac.com/file/11823/vr2.pdf
 
3D Technology & Titus
The new 3D HVAC Experience in our training facility allows our thought leaders to teach HVAC systems from a totally new perspective. Traditional presentations, while still very useful today, can only go so far, plus today, people are now learning concepts in so many different ways that you have to explore all avenues to display information. There are so many tools available now that it’s hard not to be tempted to try multiple ones until you find one that suits your business.
 
3D sets us apart from any other brand that offers CES classes too. For instance, you have a young engineer who recently graduated from college less than 5 years ago and is eager to learn more about HVAC. This person is accustomed to using all of the latest technology - smartphones, tablets, hover boards, etc. - just to name a few. With our new 3D wall experience, we are better equipped to engage this type of person as they can visually see how the system works from a new perspective designed specifically to enhance what is taught in a traditional setting.

As we have stated before, "exploring new technology and innovations over the years has never been an issue for us - it’s a challenge we meet head on and gladly accept." Adding 3D presentations is just another tool we are eager to explore. Presently we have UnderFloor Air Distribution (UFAD) and Chilled Beam systems nearing completion and plan to incorporate this innovation across many more product lines in the near future. Additionally, we now have the advantage to travel with it too. We have created 2D virtual reality VR environments compatible with Samsung Gear S7 devices that our personnel can take and showcase to an architect, engineer or any other decision maker you want us to meet. Imagine meeting an architect and integrating this tool into your overall presentation, the impact and impression made will definitely stand apart from anyone else.

3D Printing Has Come to Titus
When a new product design comes to light or when you have a new innovation that is ready for the next step in development, wouldn’t it be great to build a mockup to test?

Hello 3D printer, what took you so long to get here?
 
3D printing has given our engineers the resources to take designs from the computer directly to the lab environment. We can see how it is built, how all the components interact with one another, and what enhancements need to be made. Even built on a small scale compared to how it will be when finally developed, our engineers can see a multitude of things from the 3D model.

When developing content for the 3D environment, it is important to pay close attention to the details. The small details are the difference makers. Thus far all endeavors have been very beneficial for us and we look forward to implementing this technology in the near future across many other platforms.
 

Wednesday, February 22, 2017

GRD: Frequently Asked Questions

Titus encourages questions, as they lead to knowledge and a refinement of processes. It is understood that customers have varying requirements to meet job needs. This holds especially true for our largest offering, GRD products. With that said, we thought it would be worthwhile to explore common GRD inquiries and provide relevant application examples: 

How do we estimate Oversized Grille Performance? 

Grilles ordered with neck sizes larger than 48” are supplied in multiple smaller grille sectionals, and referred to as "oversized construction." Oversized grilles can be ordered to fill very large hole openings, up to the max size of 144” x 96”. To determine the performance of an oversized grille, we have to analyze the performance exhibited by each grille sectional. Please refer to page H48 of the current Titus catalog for illustrations showing the breakdown of grille sectionals.  

Example: We want to know the performance of a 96” x 96” oversized grille handling 2,000 cfm. We know the oversized construction will consist of four 48” x 48” sectionals based on the 96” x 96” neck size. Dividing the 2,000 cfm by 4 sectionals results in a cfm load of 500 cfm per 48” x 48” sectional. Finally, use the performance tables in the Titus catalog to determine what NC level and/or throw value the 48” x 48” grille will exhibit. The performance of the grille section is indicative of the performance for the entire oversized construction.

How can Supply Diffusers be used for Exhaust/Return Air Applications? 

Supply air diffusers can also be used for return air applications. When using a supply diffuser for return air, you have to make a slight adjustment to account for the increased pressure. Return air is now entering the smaller face area, instead of the larger neck area, which results in increased negative static pressure. Since pressure is increasing, so will the noise emitted by the diffuser. A safe rule of thumb is to convert the NC level of a supply diffuser to a return air application is to add 3-4 extra NC to the published NC value. 

Example: A 24” x 24” module OMNI with a 10” round neck can supply 436 cfm at 20 NC. In a return air application, the same OMNI will be able to exhaust 436 cfm at 23-24 NC. 

How are Grilles Sized based on the Free Area Requirement? 

Free area is the sum of the areas of all the space between the bars or blades of a grille, and is often expressed in square inches (in²) or square feet (ft²). FA is commonly used for supply and return grilles, but not ceiling diffusers. To determine the free area for the Titus grille in question, you must first locate the free area percentage for that product. The free area percentages for all Titus grilles and registers are listed in the Air Balancing Guide, located on the Titus website.


Once you have located the appropriate FA% for the model in question, you must then lookup the core area based on the nominal grille neck size. The Titus performance data lists the core area for all supply and return grilles. Multiply the core area by the FA% and the result is free area for that neck size in ft².

Example: A 22” x 22” neck size 350 grille has a core area of 3.14 ft². Looking at the Air Balancing Guide, the FA% for a 350 grille is 58%. Our resulting free area for a 22” x 22” 350 grille is 3.14 ft² x .58 = 1.82 ft².




Please direct questions toward Titus Communications (communications@titus-hvac.com) and/or Neal Holden, Titus' GRD Application Engineering Manager (nholden@titus-hvac.com).  

Tuesday, January 31, 2017

Chilled Beam Basics: Energy Savings 101

Chilled beams are just one part of an energy-efficient system. They need the correct primary air systems to save energy. To determine which system, we need to take a closer look at chilled beams and how they save energy.

Chilled beams take advantage of increased volumetric heat capacity of water over air. Water requires 1/3440th the volume to move the same amount of energy as air at the same temperature difference. This equates to 1/7th the energy to pump the water, versus the air, for a load in a standard HVAC system.

An active chilled beam has two distinct cooling components. The first component is the induced room air that is cooled by the chilled water coil, and the second is the primary air. The primary air will be discharged into the chilled beam through nozzles. As the primary air expands, exiting the nozzles, it will form a lower pressure zone around the nozzles. This low-pressure zone will induce air from the room over the chilled beam’s chilled water coil. The induced air will be cooled by the coil and provide sensible cooling. This is the component we want to maximize to take advantage of the pumping efficiency / volumetric heat capacity. If the primary air is supplied at a dry-bulb temperature below the space temperature, it will provide the second component of sensible cooling. This component is the same for a standard overhead air system. To summarize, we want to maximize the induced air. Another way to say that is the higher the induction rate, the greater the energy savings.

The amount of induced air is affected by the inlet pressure and nozzle size. A general rule of thumb is the smaller the nozzle, the greater the induction rate.

The primary air satisfies three requirements in the chilled beam system. It provides ventilation air, latent capacity and the energy to operate the chilled beams. We determined that to maximize energy savings, you want to minimize the required primary air.

In general, the primary air’s first requirement, ventilation, will not set the airflow. Minimum airflow set by ASHRAE 62.1 will not provide adequate latent capacity at standard commercial supply air temperatures to meet design loads. There are always exceptions, and design should be looked at on a case-by-case basis.

Latent capacity of the primary air generally is the driving factor that sets the airflow. Depressing the specific humidity level of the primary air will increase the latent capacity of the airflow. This will allow the system to provide less primary air. The goal is to balance the needs of the space with the minimum primary air and distribution energy. Ideally, the primary air system should depress the specific humidity to a level where the required primary airflow is equal to the ventilation requirements or the chilled beam’s minimum airflow to meet sensible loads and room coverage.

An additional advantage to reduced primary airflows is decreased reheat energy. In maximizing the energy efficiency of the system, the majority of the cooling load will be controlled by the chilled beam’s chilled water system. As the room load changes, the chilled beam’s chilled water can be modulated or shutoff to adjust room cooling. Due to the depressed specific humidity level and the constant volume supply of the primary air, the latent capacity to the room will not change, maintaining more consistent occupant comfort even during low sensible load times without the need for reheat to maintain temperature or humidity.

Reduced reheat and distribution energy are two ways chilled beams can improve the energy efficiency of a building design.


Please direct questions toward Titus Communications (communications@titus-hvac.com) and/or Ken Loudermilk, Titus' Senior Chief Engineer - Sales & Marketing (kloudermilk@titus-hvac.com).  

Wednesday, December 14, 2016

EcoShield


Titus has fielded many inquiries about our EcoShield liner. All literature associated with this product can be found on our website. The liner submittals show all of the ASTM & NFPA standards that the liner is in compliance with. EcoShield liners can be ordered as stand-alone rolls (seen in the table below):


The roll sizes above are the standard stock sizes, with custom sizes being available between the maximum roll widths of 60” in lieu of the standard 48” width. We also have EcoShield sample kits, which are packaged in a box that can have up to 8 liner samples. A custom insert highlights competitive advantages. Contact Titus Marketing for demo kits.

Some of the great benefits of EcoShield include:

·        Quiet operation: Cotton has excellent sound-absorbing qualities, and EcoShield meets the same acoustical performance of the Titus line of fiberglass-lined products.
·        Thermal protection: Outstanding insulation performance assists in conserving energy, without the potential health concerns associated with traditional fiberglass insulation.
·        High air-erosion tolerance: EcoShield meets the same standards as fiberglass. ASTM C1071.
·        Resists microbial growth: Treated with a patented EPA-approved fire retardant that limits fungus and mold growth. ASTM C1338, G21, and G22.
·        Resists dirt, debris, damage, and moisture: The durable non-woven facing provides resistance to dust, dirt, debris, moisture, and is available with foil facing as well.
·        No itch or skin irritation: Constructed of natural cotton fibers containing no harmful irritants and is safe to handle.
·        Exceeds Class A - Flame/Smoke: Surpassed Class A standards of 25/50 with actual EcoShield results being 5/10. ASTM E84.
·        Non-toxic: Patented fire-retardant treatment does not emit toxic fumes upon exposure to flame.

Airstream Surface

The Ecoshield surface that is exposed to the air stream is overlaid with a durable, fire-resistant facing that also provides additional strength. The liner facing is not only available in the black matte facing, but in foil facing as well in both ½” and 1” thicknesses. Ecoshield eliminates outgassing or Volatile Organic Compound (VOC) concerns, and includes an EPA registered anti-microbial biocide for mold and fungal inhibition that ensures the facing is safe for you and the environment.

Indoor Air Quality 

People have become more concerned about their IAQ when they have fiberglass in their HVAC systems. There has been a growing a trend toward eliminating fiberglass from the airstream.
Many owners and engineers require alternate liners in terminals and ductwork. Options for liners other than fiberglass are as follows:
·        Fibre Free™
·        SteriLoc™
·        UltraLoc™
·        EcoShield™

These liners remove fiberglass from the airstream, but there are financial/acoustical costs associated with them. Not having a liner would obviously be the least expensive of the options, but it would result in the highest acoustic penalty. Insulation is an excellent attenuator of HVAC sound.
Fibre Free™ is the least expensive of the liner options, but would increase the sound of the system by approximately 2 to 3 dB in each octave band.
SteriLoc™ covers the fiberglass fibers with foil scrim. They are a slightly higher cost alternative, but increase the sound of the system by approximately 4 to 6 dB in each octave band. There is also the potential that the foil scrim can get torn during installation, since it is a duct-board liner which is much denser and would expose the fiberglass to the airstream.
UltraLoc™, which sandwiches the fiberglass fibers between sheet metal, is the most expensive of the liner options and by far the heaviest. The sound increase of a double-wall terminal is dependent on unit design and airflow characteristics.
EcoShield™ allows you to take the fiberglass out of the airstream with no additional cost for the liner.
Suggested Specification
The terminal casing shall be minimum 22-gauge galvanized steel (20 gauge for fan-powered terminals), internally lined with ½-inch matte faced, natural fiber insulation that complies with ASTM C 1071 and NFPA 90A. The liner shall comply with ASTM G21 and G22 for fungi and bacterial resistance.
(Liner facing and thickness can be replaced in the above specification text to meet the different EcoShield types.)

Please direct questions toward Titus Communications (communications@titus-hvac.com)

Friday, December 2, 2016

Fan Filter Diffusers - The Solution for USP 797 and USP 800 Pharmacies

Fan filter diffusers (FFD) were introduced to the market in 1984 as a new solution in cleanroom applications. In situations where the use of conventional ducted modules is impractical or the air supply has insufficient static pressure to move the air through a HEPA filter, fan filter diffusers provide an excellent alternative.

In cleanroom design, the primary factor is contaminant removal and the cleanliness level, so moving the air is a major challenge. The volume of recirculated HEPA filtered air, including conditioned air to handle high cooling loads that are typical of many cleanrooms, can range from less than twenty to more than five-hundred air changes per hour. Fan filter diffusers are designed to address this situation by producing a laminar or unidirectional flow of clean air traveling downward at a velocity of 90-feet per minute, as measured 6” below the filter face.

Cleanroom manufacturing processes require a high level of air filtration to protect the raw materials and the end product from particulates that can damage the product or cause it to fail in use. Utilizing fan filter diffusers in cleanrooms prevents the infiltration of contaminants and also provides for the removal of particles generated by people and equipment in the work space. Typical cleanroom applications that utilize fan filter diffusers include:

  • Semiconductor Manufacturing 
  • Pharmaceutical Manufacturing 
  • Medical and Dental Device Manufacturing 
  • Digital Device Manufacturing 
  • Food Processing Plants 
  • Computer Manufacturing

Titus’ Fan Filter Diffusers … Low Energy, Low Sound and Low Profile

Titus offers a complete line of fan filter diffusers that can be used for new design or upgrading existing cleanroom environments. Each Titus FFD is a self-contained fan filter module that includes HEPA or ULPA filter, pre-filter, and fan speed control. Air circulation is maintained by using a lightweight, forward-curved fan, powered by a 120V or 277V 60Hz motor. Motor speed is adjusted by the solid-state speed control that is mounted on the top of the housing. Patented baffling technology ensures uniform airflow across the filter face and attenuates sound for one of the quietest fan filter diffusers in the industry. The room side replaceable option (R) provides quick and efficient replacement of the HEPA or ULPA filter while the diffuser remains in place. Room side replaceable diffusers are ideal for plenum areas with limited space or applications that require frequent filter changes.

Titus’ fan filter diffusers are also available with an electrically commutated motor (ECM) option. These units dynamically adjust themselves to maintain the set airflow, compensating for changes in static pressure, filter loading or other local conditions. Titus fan filter diffusers with an ECM can easily maintain cleanroom air levels exceeding the Institute of Environmental Sciences and Technology’s recommended practices. Airflow is maintained so constantly and consistently that the need for future balancing is greatly reduced. The ECM option, along with the patented baffling system and forward curve fan, makes Titus fan filter diffusers intelligent, energy efficient and ultra-quiet.

Titus’ Fan Filter Diffuser Models:

·        FFD - Standard construction, PSC motor, HEPA or ULPA filters, 2’ x 2’, 3’ x 2’,  4’ x 2’ sizes
·        FFDE - Standard construction, ECM motor, HEPA filter, 2’ x 2’, 3’ x 2’,  4’ x 2’ sizes

·        FFDR - Room side replaceable filter, PSC motor, HEPA filter, 2’ x 2’, 3’ x 2’,  4’ x 2’ sizes
·        FFDER - Room side replaceable filter, ECM motor, HEPA filter, 2’ x 2’, 3’ x 2’,  4’ x 2’ sizes

·        FFDRA - Room side replaceable filter and PSC motor, HEPA filter, 2’ x 2’, 3’ x 2’,  4’ x 2’ sizes
·        FFDERA - Room side replaceable filter and ECM motor, HEPA filter, 2’ x 2’, 3’ x 2’,  4’ x 2’ sizes


Please direct questions toward Titus Communications (communications@titus-hvac.com) and/or Titus' CB/Critical Environment Product Manager Matt McLaurin (mmclaurin@titus-hvac.com)