Excellence in engineering
Welcome to the Anston-Greenlees, Inc. web site. If you are a first time visitor, we hope that this is where you wanted to be. If not, please look around and see what our company is all about.
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Projects
Located adjacent to Tampa Stadium is the 73,000 square foot Scripps Howard Broadcasting television station, WFTS Channel 28. Designed to exhibit state of the art technology, it encompasses modern beauty and superior function.
The unifying architectural element to this building is the three-story skylight atrium along the buildings main axis which provides both a spatial and visual link between the three levels. This atrium is designed to display Master Control Room equipment areas, editing booths, and an immense news room so visitors can see production in the making, from commercials to newscasts. The north wall of the atrium is designed as back drop to display the stations promotional material and products. Clients and visitors walk through this vast space, leading to a conference room by crossing a bridge which provides the most dramatic view down both directions of the main building axis. The conference room overlooks the 4,036 square foot, two story news room area and the three story atrium. Adjacent to the news room is a 3,472 square foot audience participation studio.
Continuing with the cutting edge of technology theme as predicated by the architect, several innovative HVAC technologies were used to achieve the goals of having an energy efficient system, maintaining indoor air quality, and ease of maintenance while minimizing first cost.
The central plant, located atop a five level parking garage adjacent to the studio, consists of two 135 ton air cooled reciprocating chillers, each fitted with a desuperheater. The desuperheaters recover waste heat from each chillers hot refrigerant circuit and reject that heat into water circulating through the desuperheater. This heated water is then stored in a 4,000 gallon thermal storage tank and is used as reheat water for maintaining temperature and more importantly, humidity control within the facility. A primary/secondary loop arrangement is designed for both hot water reheat and the chilled water systems. Chilled and reheat water is pumped to the studio via a packaged pumping system. The packaged pumping system was utilized to minimize construction and commissioning time and to have a pumping system that is optimized to have the best wire to water efficiency. The secondary loop pumps utilize variable frequency drives to supply only the amount of water needed by the systems.
The studios presented several design challenges. First and foremost was a noise level of NC 10. This was attained with the use of sound attenuators, double wall air handlers and ductwork with a film sandwiched between the insulation and the perforated inner wall, and by keeping the air velocities in the ductwork down to 500 FPM in the mains and 300 FPM in the branches. The film was used to keep the ductwork cleanable. The second challenge was addressing the drastic swing in heat loads. The studios remain dark and empty 90 percent of the time. Lights are energized and the crew is assembled about 30 minutes before a broadcast. The system had to be dynamic enough to react to 120 kw of instantaneous lighting load. The impact of people relative to the total load is small in the news studio. The constant air volume (CAV) air handler that serves the news studio mixes untempered outside air with return air, cools and then reheats it to maintain space relative humidity and temperature. On the other hand, the audience participation studio required preconditioning the outside air prior to mixing due to the high amount of moist Florida air (91&Mac176; DB/ 77&Mac176;F WB) required to meet ASHRAE 62-89. The outside air was preconditioned by use of an air handler with a precooling runaround water coil, a chilled water cooling coil, and a companion runaround reheat coil achieving eight degrees of precooling and reheat around the outside air cooling coil. This greatly reduced the latent load of the outside air prior to mixing with return air.
Production control areas, a computer room, and the archive tape room design used water cooled self contained computer room units for critical control of temperature and humidity.
The remainder of the facility utilized several chilled water variable air volume (VAV) systems, each with a dedicated outside air handler with a runaround water coil wrapped around a chilled water coil and a main air handler consisting of a cooling coil and a reheat coil along with a fan and inlet vanes. Noise levels were designed to be less than NC 35 in Executive offices, reception areas, general open offices, and corridors. externally wrapped single wall galvanized steel ductwork was used in these areas, again for IAQ cleanability. Space comfort is provided by VAV boxes with a thermostat strategically located in each respective zone. Each perimeter VAV box has an electric heater for space heating.
Quintessential to the successful integration of all the building components is a low cost, user friendly, energy management system for control of the HVAC system. The chillers and the packaged pumping system included open protocol. The building energy management system (EMS) has complete control over all aspects of the building HVAC system operation and monitors alarms from the computer room units.
Services
HVAC Info
Plumbing Info
Electrical Info
Fire Protection Info
Anston-Greenlees, Inc. is proud to offer LEED design and accredidation.
Current Clients
Our Current Clients Include:
• Bahama Breeze, and other private and public sector clients
• Citrus County Schools
• City of Tampa
• City of St. Petersburg
• Florida Department of Juvenile Justice
• Florida Department of Management Services
• Florida Department of Transportation
• Hillsborough Community College
• Hillsborough County
• Hillsborough County Schools
• Monroe County Schools
• Palm Beach County Schools
• Polk Community College
• Polk County Schools
• Raymond James Financial, Inc.
• Sumter County Schools
• Tampa Electric Company
• The University of South Florida
• Veterans Administration
Contact Us
Address:
1315 West Fletcher Ave. Tampa, FL 33612
Office:
(813) 963-1919
Fax:
(813) 963-2815
Email:
agi_agi-engineers.com
About Us
Anston-Greenlees, Inc., established in 1991, is a full service mechanical and electrical engineering firm with experience designing mechanical and electrical systems for private, public sector, educational, health care and institutional clients.
Our Principals boast nearly forty years of combined engineering experience.
Because of the continued trust our clients have placed in us at Anston-Greenlees, Inc. our business is firmly established...and growing. Our family of technical personnel include the firm's Associates, Registered Mechanical Engineers, Registered Electrical Engineers, and senior level engineering designers with more than twenty years of experience.
Robert C. Anston, PE, is our Principal for Electrical Engineering. Rob holds a BSME/Mechanical Engineering Degree from Lehigh University and a BSEE/Electrical Engineering Degree from the University of Florida. He also attended the U.S. Naval Academy from 1977 to 1979. Rob is registered as a Professional Electrical Engineer in Florida and numerous other states.
Rob brings to Anston-Greenlees over twenty year of experience in the electrical construction industry. He has extensive experience in all phases of electrical engineering design and construction, including primary service, power distribution, indoor and outdoor lighting, and special systems such as fire alarm, CCTV, intercom, sound, security, grounding, voice/data networks and control systems, and specialized communications media and telecommunications facilities. Rob has also designed buildings for a number of colleges and universities.
William M.R. Greenlees, PE, is our Principal for Mechanical Engineering. Bill holds a BSME Degree from the University of South Florida, where he graduated Cum Laude. He is registered as a Professional Mechanical Engineer in Florida and numerous other states.
With over nineteen years of mechanical engineering experience in all phases of design and construction administration at Anston-Greenlees, Bill is responsible for designing plans and specifications for HVAC, plumbing, and fire protection systems. He is exceptionally experienced in the design of today's modern office facilities, with an emphasis on energy-efficiency and cost-effectiveness. His designs include complete mechanical systems employing such features as chilled water systems, heating systems, variable-volume air and water systems, DDC and pneumatic controls energy management systems, and heat recovery for domestic hot water and reheat purposes. Bill recently received the ASHRAE Regional Technology Award for his work on Davidsen Middle School.
Office Location:
Tampa, Fl
1315 West Fletcher Ave.
Tampa, FL 33612
Phone: (813) 963-1919
Fax: (813) 963-2815
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