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).