This talk will concentrate on a few critical areas of the hydronic side of the design and some of the operational issues that must be considered during the design phase. Pipe size, coil performance, balance, control valve operation and variable speed pump operation will be looked at and discussed.

About Our Speaker
Our Speaker for February 11th’s presentation will be Mr. Mark Hegberg. Mr. Hegberg has over 20 years of experience in the HVAC business, primarily in the field application and programming of Direct Digital Controls systems. For the past five years Mr. Hegberg has taught Hydronic Systems Design and Analysis for ITT Bell & Gossett at the Little Red Schoolhouse hydronic training center.

In ASHRAE, Mr. Hegberg currently chairs the Technical Activities Committee, and has chaired the sub committee overseeing the technical content revision of the ASHRAE Handbooks. Previously he has served on the ASHRAE Standards Committee, been President of the Illinois Chapter and General Chairman of the ASHRAE Winter Meeting. He is a holder of the ASHRAE Distinguished Service Award.

Mark Hegberg is the Chair of ASHRAE Technical Committee TC 6.1 Hydronic and Steam System Design, and past Chair of ASHRAE TC 9.7 Test, Adjust and Balance.

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A Message From Our President

This month I am pleased to announce that we will be having a distinguished lecturer speak to not only our Chapter, but the Miami Chapter and the Association of Energy Engineers as well.

February’s meeting will be the first joint meeting among the three organizations, and we are pleased to host it. You will notice that we have moved the meeting location back to the Tower Club for this month. Since the Tower Club is closer to Miami than the Marriott, we decided to have the joint meeting there.

Next month the meeting location will move back to the Ft. Lauderdale North Marriott. I hope to see a good showing from the GoldCoast Chapter at the meeting. The Miami chapter is predicting 25 members in attendence and the Association of Energy Engineers will probably have close to that number as well. This should be a rare occasion to meet and socialize with some 100 members of the South Florida HVAC community.

Although this year is far from over, it is a good time to begin to plan for the future. The Board of Governers has already started talking about who the nominees for officers will be for next year. If you are interested on becoming an officer or chair for the GoldCoast Chapter please contact Jason Ayala. Jason is currently President-Elect and therefore will become the next President of the GoldCoast Chapter when my term expires in July/August.

In addition the GoldCoast Chapter will be hosting the 2005 CRC in Ft. Lauderdale. Dan Rogers has volunteered to head up the planning efforts and has already begun working on this task. If you would like to assist Dan please contact him. All phone numbers are listed in this newsletter.

Sincerely,

Joe Fellmeth
Tel: 754-321-0444

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A Message From Our Vice President

As Vice President, I get to take up items that are of a "special" nature, in that they don't fall within the normal activities of the other Board Members. We have two items that require the membership's opinions and involvement. The first is a survey that I am putting together, the primary purpose of which is to determine if the meeting night should be changed. The second, is a suggestion to interested vendors in our organization, to put together a "Rep Guide" that will serve our tri-county area. I will describe this publication more in a minute.

In recent years, there has been conflicts between our meeting night and that of the Construction Association of South Florida's. For those of us that are involved in both organizations, we have had to make a choice between the two, every meeting night. There may also be other functions that conflict with our selected meeting dates. As part of a general member survey, we will be attempting to determine if we should move our meeting night to another evening. The suggestions have been to move it to either the first or third Wednesday of the month. Wednesday still seems to be the most popular night, at least for the Board members. If you have any strong opinions on this subject, please feel free to e-mail me or call me.
E-mail: amesser@ccgmail.com or phone 954-585-4304. Be looking for the survey.

The second item is the suggestion that one of our vendors lead a committee to put together a "Representative's Guide". This would be a reference book, assembled by the committee, with our local ASHRAE Chapter's backing, that could be distributed within our technical community, to serve as a reference guide for professionals looking for particular products, their reps, or companies. The type of information contained in such a guide includes a cross reference of products and the sales reps that handle them, an alphabetical listing of the different agents and their product lines, a listing of the Engineering firms represented by our membership, as well as a listing of the various contracting firms that are represented by our members. We can include other information, as deemed appropriate. I have such a guide form the Central Florida Chapter, that I will gladly copy and share with interested members, that could serve as a template for our Guide. Ads are sold by the Central Florida Chapter that pays all of the costs of assembling and printing the guide. It can then be given to members of our community at no charge. Any one interested in being a part of this committee, especially its chair, please contact me.

See you at the February meeting.

Allen Messer
Vice President
Tel: 954-585-4304

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2004 Programs

March
ACCOMPLISHING MAJOR MECHANICAL RETROFITS THROUGH PERFORMANCE CONTRACTING
(Presented by: BGA, Inc.)

April
THE NEW FLORIDA ENERGY EFFICIENCY CODE

May
To Be Announced

June
SUMMER SOCIAL OR TECHNICAL PRESENTATION

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Gold Coast Chapter Resource Promotion Update

We just held the Gold Coast chapter’s 12th Annual Golf event on October 17, 2003 at the Jacaranda Golf Country Club. The event as was well attended and everybody was having fun. I would like to thank all of the people who supported this year’s event.

This event generates the largest portion of our chapter’s annual contribution to societies Resource Promotion campaign. This year’s event was again very successful, with (75) Flag Sponsor and (132) registered golfers, both all time highs. Thanks to all of you we help keep the research rolling!! Look to see all of you at next years event.

We going to recognize last years Research Promotion contributors at the November Chapter meeting. Last years donors are listed below. Please send a company representative to accept your award and our chapter’s gratitude.

A&B Pipe & Supply
Air Management Systems, Inc.
API Expansion Joints
J.K. Kessler & Associates Inc.
Bovis Lend Lease
Brimar Pipe Markers
Calmac Thermal Energy Storage
Carrier South Florida
Coatings Etc., Inc.
Cornell Balancing Company
Corsair
Florida Heat Pumps
Cyrus Technologies Incorporated
Data Aire
Diversified Fluid Control
Earl Hagood
E.H. Whitson Air Conditioning
E.R. Air Conditioning
Enviro-Mechanical
Enviro Team
Gregor Hartenhoff Inc.
Graham Heat Exchangers
Griswald Controls
H.O. Terrice
H. Lamm Industries
Hill York Corporation
HVAC Assoc.
Hydro-Aire System Sales, Inc.
HYVAC, Inc.
John J. Kirlin, Inc. FLORIDA Division
J ohnson Controls, Inc.
Kamm Consulting
Lennox Industries
Maddux Supply
Mason Inc.
McAllister & Associates
McQuayService
Merril-Lynch
Middleton & Associates
Mueller Steam Specialty
MultiStack
Nailor Industries of Florida
Norca Air Conditioning & Refrigeration Corp.
Optimum Power and Environment of Florida
P.E.C.O. Enterprises Inc.
Penn Refrigeration
Pomper Sheet Metal
Protec Cooling Towers
Quality A/C
Raypak Boilers
Richard Flanders Enterprises
S & W Sheet Metal
Smith Seckman & Reid, Inc.
Southeastern Hose
Spillis Candela-DMJM
Southeast Mechanical Service
Standrod Engineering, PA
Steven Feller PE Engineering
TACO, Inc.
TES of South Florida
The DCI Systems Group, Inc.
The Poole & Kent Company
The Trane Company
Thermacor Process
Thermal Concepts
TLC Engineers
Total Dynamic Balance
Tropic Supply, Inc.
Warren Technology
Weinman Pumps
William R. Nash, Inc.
York International
Dan Rogers
ASHRAE Gold Coast Chapter

Thanks for all the your support of the 12th annual golf tournament. We have a few remaining events where I hope to see you; our upcoming training seminar and 2nd Annual “The War” Fishing Epic.

Daniel Rogers, PE
ASHRAE Gold Coast Chapter
Resource Promotion Chairman 2003-2004

Dan Rogers, P.E.
954-389-9675

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Membership
If you are not a member of ASHRAE, and would like to join please contact me at my email or phone (954) 527-1112.

Join the 50,000 ASHRAE members advancing their careers through and ASHRAE membership. ASHRAE, an individual membership society, is an international organization operated for the exclusive purpose of advancing the arts and sciences of HVAC&R, the allied arts and sciences and the related human factors for the benefit of the public.

Reasons to join ASHRAE
Technical education and information is the greatest benefit of ASHRAE membership. Other benefits include:

• Knowledge
• Bookstore discount
• Monthly ASHRAE Journal
• Free Annual Handbook
• Marketing with other Members

For all associate members, you can qualify to be a member. Here is how you can do it.

Membership Grades
Member
A Member shall have the equivalent of twelve Society-approved years of experience composed of an approved combination of (a) completed education beyond high school, (b) work experience, and (c) professional engineering or related professional registration or license issued by a legally authorized body.

All technical and scientific education shall be based on curricula approved by the Board of Directors.

Approved engineering curricula shall be equivalent to that accredited by the Accreditation Board of Engineering and Technology in the United States of America or the Canadian Engineering Accredidation Board. Scientific education in fields other than engineering shall be from a college or university course of study which has been accredited by an organization charged with monitoring standards of performance.

One and one-half years of credit for each year of completed education for graduates of approved technical curricula.

One year of credit for each year of education for non-graduates who have completed at least two years of approved technical curricula.

One year of credit for each year of completed education for graduates of colleges or universities which do not have accredidation. Those holding associates degrees from technical institutions shall also be credited for one year for each year of education.

One year for each year of the qualifying work experience in the performance of duties in work related to ASHRAE fields of interest, as verified by the applicant's reference, and shall have included research, teaching, design, contracting, engineering sales or engineering management.

Three years of credit for professional registration or license issued bya a legally authorized body in engineering or related fields, the requirements of which as to education, examination, and active practice are satisfactory to the Board of Directors.

Qualifying Work Experience
The following defines qualifying work experience in ASHRAE-related fields:

1. Research—Must have demonstrated competence in independent and original research of an engineering or scientific nature which has been published.
2. Teaching—Assistant Professor or higher in an engineering or scientific discipline.
3. Design—Responsible for engineering or scientific design including calculations, system and equipment selection and layout, and performance.
4. Contracting—Responsible for the installation, start-up and operation of significant systems. Must demonstrate capability of initiating or evaluating the effect of engineering or scientific design changes of any type on the performance of the system.
5. Engineering Sales—Must be responsible for assistance to system designers in the engineering, equipment selection and application of components of heating, refrigeration, air-conditioning, ventilation and allied systems.
6. Engineering Management—Must be directly responsible for and involved in the management of technical, scientific and engineering phases of the company.
   

ASSOCIATE MEMBER
An Associate Member shall have had experience in technical matters or in design, operation, or maintenance in heating, refrigeration, air-conditioning, or ventilating fields; shall have an interest in the advancement of the Society's aims; and shall possess sufficient qualifications to coorporatd with heating, refrigerating, air-conditioning, or ventilating engineers in the advancement of relating to heating, refrigerationg, air-conditioning, or ventilating engineering and its application.

For all the associate members you could qualify to be a member.
All members shall have the equivalent of twelve society-approved
years of experience composed of an approved combination of :

1. Completed education beyond high school
2. Work experience
3. Professional engineering or related professional
   registration of license issued by a legally authorized
   body.

Please let me know if you qualify I will take care of upgrading
your membership.

Marie-Pierre Boutin
Tel: (954) 527-1112
Fax (954) 524-7505

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Technical, Energy and
Government Activities
To: All Consulting Engineers and HVAC Contractors

From: Technical, Energy and Government Activities
John G. Rodriguez – Chairperson.
(305) 653-0212 - work
(954)254-4771 - cell
John G. Rodriguez

Re: Smoke Movement

A Smoke Control System must be designed so that it is not overpowered by the driving forces that cause smoke movement, which include stack effect, buoyancy, expansion, wind and the HVAC system. During a fire smoke is moved by a combination of these forces.

Stack Effect

When it is cold outside, air tends to move upward within buildings shafts, such as stairwells, elevator shafts, mechanical shafts, etc. This Normal Stack Effect occurs because the air in the building is warmer and less dense than the outside air. Normal Stack Effect is large when outside temperatures are low, especially in tall buildings.

In our region, because of the warm weather we experience Reverse Stack Effect. That is when the outside air is warmer than the building air, and then there is a neutral tendency for downward air flow, or Reverse Stack Effect, in shafts. At standards atmospheric pressure, the pressure difference due to either normal or reverse stack effect is express as:

?P = 7.64(1/To – 1/Ti)h

?P = Pressure difference, in. of water
To = Absolute temperature of outside air, ºR.
Ti = Absolute temperature of inside shaft, ºR
h = Distance above neutral plane.

Example:

The neutral plane is located at the mid-height of a 500-ft tall building with inside and outside temperatures of 72 and 92 ºF. What is the pressure difference at the top of the building?
?P = 7.64(1/To – 1/Ti)h

?P = ?
To = 92 + 460 = 552ºR.
Ti = 72 + 460 = 532ºR.
h = 500/2 = 250

?P = 7.64(1/552ºR – 1/532ºR) 250
?P = -0.13 in. water

Buoyancy

High temperature smoke from a fire has a buoyancy force due to its reduced density. The pressures occurring during a fully involved compartment fire can be analyzed in the same manner with the equation developed for stack effect. The following equation for the pressure difference from the fire compartment to its surroundings can be developed:

?Pfo = 7.64(1/To – 1/Tf)h

?P = Pressure difference from fire compartmentto surroundings, in. of water
To = Absolute temperature of outside air, ºR.
Ti = Absolute temperature of gas inside fire compartment, ºR
h = Distance above neutral plane.

Example:
The neutral plane is located at the mid-height of a 500-ft tall building with a fire compartment temperature at 1470 ºF and an outside temperature of 92 ºF . What is the buoyancy pressure difference at 6ft above the neutral plane?

?Pfo = 7.64(1/To – 1/Tf)h

?P = ?
To = 92 + 460 = 552ºR.
Ti = 1470 + 460 = 1920 ºR
h = 500/2 = 250 ft

?Pfo = 7.64(1/552 – 1/1920)250
?Pfo = 2.47 in. water

Expansion

The energy released by a fire can also move smoke by expansion. In a fire compartment with only one opening to the building, building air will flow in and hot smoke will flow out. Neglecting the added mass of the fuel, which is small compared to the airflow, the ratio of volumetric flows can be expressed as a ratio of absolute temperatures:

Qout = Tout
Qin Tin

Where:
Qout = Volumetric flow rate of smoke out of a fire compartment, CFM
Qin = Volumetric flow rate of air into a fire compartment, CFM
Tout = Absolute temperature of smoke leaving fire compartment, ºR
Tin = Absolute temperature of air into fire compartment, ºR

For a smoke temperature of 1290 ºF and a entering temperature of 67 ºF, the ratio of volumetric flows is 3.32. Note that the absolute temperatures are used in the calculation. In such a case, the air flowing into the fire compartment would be 9960 CFM, with the gas expanding more than three times the original volume.

For a fire compartment with open doors and windows, the pressure difference across these openings due to expansion is negligible because of the large flow areas involved. However, for a fire space with out open doors or windows, the pressure differences due to expansion may be important, provided there is sufficient oxygen to support combustion for a significant time.

Wind Effect

In many instances, wind can havea pronounced effect on smoke movement within a building. The pressure the exerts on a surface can be expressed as:

Pw = 0.00643Cw?oV²

Where:

Pw = Pressure exerted by wind, in. w.g.
Cw = Dimensionless pressure coefficient.
?o = Outside air density, lb/ft³ (0.075 lb/ft³)
V = Wind velocity, mph

The pressure coefficients Cw are in the range of -0.08 and 0.08 with positives values for the windward walls and negative values for the leeward wall. The Pressure coefficient depends on building geometry and varies locally over the wall surface.
We will use Po x Cw2(-0.08) – Cw1(0.08) x 0.00643 = 0.00077 as a constant and multiplied it by the wind velocity square to determined the pressure differential between the two sides of the building.

?P = 0.00077(V²)

Example:
What is the differential pressure across the top of a building with winds of 25 mph?

?P = 0.00077(V²)
?P = 0.00077(25²)
?P = 0.00077(625)
?P = 0.48 in. w.g.

Wind data is recorded by airports and weather service at heights of about 33ft above the ground. The relationship has been extensively used to describe the velocity of profile of the wind near the surface of the earth.
A value of 0.16 for the exponent is appropriate for that terrain. The wind exponent increases with rougher terrain, and for rougher terrain such as urban areas a value of 0.40 is appropriate. In urban areas with a rather constant roof level, the wind gradient can be expressed as:

V = Vo(z-y/zo)n

Where:

V = Wind velocity, fpm
Vo= Velocity of reference elevation, fpm
z = Elevation of velocity, ft
zo= Reference elevation (33ft), ft
y = Average roof height, ft
n = Wind exponent, dimensionless

Example:
Estimate the wind velocity near the top of a 500-ft building located in a city where the average roof height is 100ft. The wind speed measure at the local airport is 15 mph and the wind exponent is 0.4

15 mph = 15 x 88 = 1320 fpm

V = Vo(z-y/zo)n
V = 1320(500-100/33)0.4
V = 1320(12.12)0.4
V = 6399 fpm/88 = 73mph

References:
- NFPA 92A
- NFPA 92B
- ASHRAE Design of Smoke Management Systems

Sincerely,

John G. Rodriguez
TEGA Chairperson

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PAST PRESIDENT’S
1968-1969 Donald Dorini
1969-1970 Hugh Kirkpatrick
1970-1971 John Welbourne, P.E.
1971-1972 Lawrence Lazar, P.E.
1972-1973 Richard MacDonald
1973-1974 Gerald Fishe, P.E.
1974-1975 Charles King
1975-1976 C.A. Bud Stolley, P.E.
1976-1977 Charles Deckert
1977-1978 David Hurm
1978-1979 Fulton M. Cooke
1979-1980 C.A. Bud Stolley, P.E.
1980-1981 L.L. Layman, Jr.
1981-1982 Eugene D. Petrey
1982-1983 Todd W. Carey, P.E.
1983-1984 Donald C. Herrmann
1984-1985 Ronald P. Petrey
1985-1986 Herbert L. Dell
1986-1987 George Gilbert
1987-1988 Steve W. Klengson
1988-1989 Robert J. Davis, Jr.
1989-1990 Raymond A. Liotta
1990-1991 Robert C. Duval
1991-1992 R. W. Chip Lafferty, P.E.
1992-1993 Steven M. Feller, P.E.
1993-1994 William D. Ogden
1994-1995 Mike Balko
1995 William Hoeveler
1995-1996 Eric T. Jenison
1996-1997 Eric T. Jenison
1997-1998 Richard J. Ellison
1998-1999 Rex E. Noble, Jr., P.E.
1999-2000 Betsy A. Goll, P.E.
2000-2001 Brian A. Lomel, P.E.
2001-2002 Dan Rogers, P.E.
2002-2003 Richard D. Seferian

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Chapter Directory

PRESIDENT - Joe Fellmeth
Tel: 754-321-0444
Fax: 754-321-0906
joe.fellmeth@browardschools.com

PRESIDENT ELECT - Jason Ayala
Tel: 954-785-0083
Fax: 954-786-8581
jayala@highstream.netus

VICE PRESIDENT - Allen Messer
Tel: 954-585-4304
Fax: 954-585-4517
amesser@ccgmail.com

TREASURER - Erik Walter
Tel: 954-463-8050
Fax: 954-786-8581
erik.walter@tlc-eng.com

SECRETARY - Brett Jenner
Tel: 954-233-3023
Fax: 954-3850407
brett.a.jenner@jci.com

MEMBERSHIP - Marie-Pierre Boutin
Tel: (954) 527-1112
Fax (954) 524-7505
mpboutin@deltag.net

PROGRAMS - Jason Ayala
Tel: 954-785-0083
Fax: 954-786-8581
jayala@highstream.net

HISTORIAN - Daniel Tharp
Tel: 561-844-9767
Fax: 561-844-9792
daniel@cors-air.com

RESEARCH - Dan Rogers, P.E.
Tel: 954-389-9675
Fax: 954-389-9687
dan.rogers@york.com

STUDENT ACTIVITIES - Brett Jenner
Tel: 954-233-3023
Fax: 954-385-0407
brett.a.jenner@jci.com

TEGA/REFRIGERATION - John Rodriguez
Tel: 305-653-0212
jrodriguez@fesinc.biz

NEWSLETTER - Susan Julien
Tel: 561-863-2258
Fax: 561-863-5597
sjulien@adp-studios.com

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BOARD OF GOVERNORS

Richard D. Seferian
Tel: 954-233-3024
Fax: 954-385-0407
richard.d.seferian@jci.com

Richard J. Ellison
Tel: 954-492-1166
Fax: 954-491-2451
rick@diversifiedfluidcontrols.com

Brian A. Lomel, P.E.
Tel: 954-463-8050
Fax: 954-463-1555
brian.lomel@tlc-eng.com

Dan Rogers, P.E.
Tel: 954-389-9675
Fax: 954-389-9687
dan.rogers@york.com

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WANTED
COWBOYS AND COWGIRLS
FOR THE PARTY OF THE YEAR

All net proceeds will be used to support The Ft Lauderdale Rotary 1090 Foundation (A501©(3) non-profit charitable organization. To date over $800,000 has been awarded in scholarships to worthy kids from our community, one of the best ways to participate is to be a sponsor.

Fort Lauderdale Rotary Club Presents

Rodeo Round-Up For Scholarships

Saturday, February 28th, 2004

Antique Car Museum
And Western Town

1527 Sw 1st Ave. Fort Lauderdale
954-779-7300

Saloon Opens 7 pm
Wild West Town 7 pm

Wyatt Earp Gun Fighters Wild Wild West Shows
at 7:30 pm, 8:00 pm, 8:30 pm

Western Town activities include:
Mechanical calf roping
Mechanical bull riding
Picture with long horn steer
H orse shoe pitch
Shooting gallery
Jail
Western dress up
…and more

Silent Auction 7pm – 9:30 pm
Cattleman’s Buffet 8:00 pm
Buck Wild Band 9 pm – 12 am

Live Auction 9:40 – 10:10 pm
Donation $100.00

Dress Western

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Advertisers
For further information regarding advertising please contact
Marie-Pierre Boutin
Tel: (954) 527-1112
mpboutin@deltag.net