COVER SHEET FOR MINUTES

The following is in accord with the Sign-In Sheet

and the Official Roster dated 26 Jan’99

VOTING MEMBERS PRESENT:

VOTING MEMBERS ABSENT:

None

CORRESPONDING MEMBERS PRESENT:

CONTRACTOR

GUESTS:

Gordon Struder:

LIAISON PRESENT:

All Voting and Corresponding Members of TC 8.4

Terry Townsend: TAC Chair

Richard Hegberg: TAC Sec. Head

Chair: Samuel Sami

Vice Chair: Michael Ohadi

Secretary: Dan Kramer

Last meeting: Toronto: 23 June 1998

Next meetings: Seattle, WA June 19-23, 1999

TC 8.4 SUBCOMMITTEES

Program: Sam Sami

Research: Dave Zietlow

Handbook: Roland Ares

Standards: Gary Price

RP 1075: Heat Loads From Coil Defrosting; Phase II Yes

1100 TRP Electro-Hydrodynamic Frost Control Yes

HANDBOOK RESPONSIBILITIES:

2000 Equipment Air Cooled Condensers June ‘99 R. Ares

STANDARDS RESPONSIBILITIES:

Standard 20 Method of Testing for Rating Forced Circulation Remote Air Cooled Condensers:

Complete: Waiting Publishing

Standard 25: Method of Testing for Rating Forced Circulation Air Coolers for Refrigeration:

Approved for Reissue

Standard 33: Methods of Testing Air Cooling and Heating Coils:

Chairman Sami called the meeting to order at 3:32P.

The chair counted the voting members present and confirmed the presence of a quorum.

The Chair called on those present to introduce themselves.

Because of time constraints, Norman Maxwell, Handbook Chair for the ‘02 volume requested to be recognized: He recommended that more illustrations be provided for those handbook sections for which TC 8.4 was responsible and that adequate space would be provided to accommodate the illustrations without reducing the space available for text.

Gren Yuill, RAC Research Liaison reported on revised procedures for consideration and approval of work statements. The new procedures require the initial submittal of a brief description of the proposed prosed project. The subject matter only would then be reviewed and either approved or disapproved by Tech Council. On approval of the subject matter, a full work statement then could be generated without concern that the subject matter might be disallowed. However, all the requirements for work statements would still have to be met.

He also noted that there was consideration being giving to updating the Handbook CD annually.

Gary Price reported on the Research Sub-Committee’s consideration of contractors who bid on 1100 TRP Electro-Hydrodynamic-Frost Control. This is a co-sponsored project by TC 1.3 and our TC 8.4.

Price reported the subcommittee’s results through the following table:

BIDDER AMOUNT WEIGHTED POINT SCORE

Univ. Maryland $85,100 88.1

Univ. Oklahoma 113,458 80.2

Purdue 105,545 80.1

Texas A & M 108,878 81.4

The weighting factors were 10,20,20,25,5,10,10. After discussion Kramer moved, LeCompte sec. to approve the Univ. Of Maryland, the low bidder.

APPROVAL OF AGENDA:

The chair requested approval of the agenda which had been distributed earlier via e-mail. There being no requests for agenda changes the agenda was accepted as distributed.

REVIEW AND APPROVAL OF TORONTO MINUTES:

There being no additions or corrections to the Toronto minutes, it was moved, seconded and VOTED 8-0-0 to approve the Toronto minutes.

CHAIRMAN’S REPORT:

Handbook: The chairman reported that there was no new information for the TC’s handbook chapters.

Paper Deadlines: The chairman announced that the following deadline dates apply for submission of paper and seminar packages for future meetings,

Last Date for Tech Paper Review Done

Review of Tech Papers Symposium and Forum Packages Due

Seattle 2 Oct ‘98 12 Feb. ‘99

Dallas 2 April ‘99 6 August ‘99

Minn 1 Oct.’99 1 Feb. ‘00 (2000)

He also announced that these dates were currently available at the ASHRAE website. The sequence is: FROM ASHRAE.org; to ASHRAE activities; to Authors and Speakers; to Meeting Paper Presentation and that authors and submittors should check the website for date changes.

Research: The Chairman announced:

• That there was to be $400,000.00 available for new projects.
• That URP’s are now allowed and that the funds from URP’s will be drawn from a different account.
• That 20% of contract value can be used to ensure good quality.
• The 13Dec98 letter from David Tree, RAC Chair, recites new rules for research proposals; these include a 2-page summary of the top three projects to allow ASHRAE Tech Council or BOD to approve ASHRAE jurisdiction and interest before full WS is prepared. This procedure is to reduce wasted effort.
• That there must be a recommendation of specific bidders with name and address placed on each WS.
• That the ASHRAE Research Plan sets forth the percent of allocable funds available for each research area.
• There was a suggestion by Dan Kramer that the chairman provide a copy of each list of proposed projects, circulated periodically by ASHRAE, to our research SC Chairman to allow him to determine whether we could participate as co-sponsors with TC’s offering projects within our areas of interest.
• The chair made brief comments regarding SPC’s 20, 25 and 33.
• The Chair discussed briefly our proposed TC 8.4 Website.

• Chair announced that each TC could nominate a member for a Technical Achievement Award.
• That ASHRAE has issued a call for the development of Continuing Education Courses.
• The chairman noted that objections by the membership to ASHRAE charging speakers’ paper and registration fees had been effective and that ASHRAE had announced that these changes had been reversed.
• On behalf of the Committee, a letter has been sent to Terry Townsend, Chair of TAC, to recommend including the listing of all bidders on each WS.

END OF CHAIRMAN’S REPORT:

Program: The chair, acting as program SC chair, reported on TC 8.4 co-sponsorship of CH99-0 Symposium and Forum 29 during Chicago meeting.

He also reminded the members of the Wednesday morning forum 29, "Coil Coatings, Issues and Challenges" to be moderated by Brian Webb.

He also announced a proposed Dallas Symposium Titled "Design Improvements for Alternative Refrigerants". TC’s 1.3 and 3.1 were to be co-sponsors. He announced that both he and Dr. Ohadi would offer papers and that other interested presenters should have papers in his hands before 2 April 1999 to allow time for the review process.

He also announced a second proposed Dallas symposium titled, "Property Update on Refrigerants" which would be co-sponsored by TC 8.4 and initiated by TC 3.1.

He also announced a tentative program to be presented at Minneapolis on the subject of "Non-Traditional Fluids" initiated by TC 3.1 and co-sponsored by TC 8.4, to be chaired by Don Bevins of DuPont.

Dr. Ohadi also proposed a symposium for a future meeting on the subject of "Opportunities and Challenges in Heat Exchanger Miniaturization" and a forum for Dallas titled, "Flow Maldistribution Issues in Heat Exchangers" both organized by TC 1.3 and co-sponsored by TC 8.4.

RESEARCH:

Dr Zietlow, Research Chair, requested Dr. Dennis O’Neal, Texas A and M, the contractor on TRP 1002 "Evaluation of Fin Staging Methods for Minimizing Frost Accumulation" to deliver his progress report.

Dr. O’Neal provided a 20 page slide report showing the progress achieved. The report included photos of the equipment, characteristics of the data acquisition system as well as a detailing of some of the problems encountered. Dr. O’Neal requested the committee grant an unfunded time extension for the purpose of allowing time to correct the equipment and software problems. The committee voted 8-0-0 to grant the time extension.

Dr. Zietlow continued his report by requesting help in preparing a work statement for determining the tube to tube heat transfer within finned tube multi-row heat exchangers.

The committee advanced questions suggesting the such tube to tube heat transfer would probably constitute a third or fourth order effect and would not only be difficult to measure, but also, even if quantified, would most likely have tenuous utility.

Steve Memory suggest a project for the purpose of quantifying air-side fouling factors for the purpose of predicting heat transfer and fluid flow. He reported also a request by Trane to include an examination of such effects on spine type heat exchangers.

There was a proposal to generate a research project to optimize the geometry of heat exchanger employed for transfer of heat from air to zeotropic refrigerants and back (ie, for cooling and heating loads). Chair Sami offered to endeavor to secure co-sponsors for such a research project.

Mention was made of URP 1075 involving determination of heat load imposed by the defrosting of frosting coils with electric resistance heaters.

Also mentioned as part of our TC 8.4 research plan was the air-side effects of round versus flat tubes.

There was also a discussion of the thermal effects and the potential coil degradation effects of frost formation and defrosting on micro-channel heat exchangers.

There was also discussion of the desirability of pursuing a project on the subject of flow distribution in evaporator headers and its effect on performance.

Finally, there was an oral proposal to generate a preliminary work statement on comparison of the air side and heat transfer performance of louvered fins with flat fins.

Gray Price provided a brief report of the status of and progress in development of Standard 34, relating to the numbering and safety designation of refrigerants. He advised that the standard 34 committee was considering the provision of tolerances in the composition designation of the covered refrigerants.

Mr. Ares reported that Standard 20, the method of test for rating air-cooled condensers was finally coming to issue. He also reported that the standard 25 committee, involved with revision of the test standard for air cooling evaporators, had voted to reaffirm the existing standard. The motion to reaffirm included a request to ASHRAE to establish a new committee for the purpose of amending the standard to include a method for determining the refrigerating load imposed by the defrost function.

He also reported that standard 33 for determining the heat transfer effect of coils, was awaiting its third public review..

Ray Rite made an interesting slide presentation, with text by Joe Pietsch, directed to a proposed coil construction and installation standard. There was a motion made and seconded

to the effect that TC 8.4 would prefer to delay establish such a standard until clear-cut direction and objectives for such a standard had been provided. The motion succeeded 8-0-0.

HANDBOOK: Mr. Ares reported that no further action was required in connection with the Equipment and Systems Volume. However, that, for the 2002 volume, chapter 40 needs volunteers.

MEMBERSHIP:

A prospective member noted, while he had been affirmatively voted into the committee in Toronto, his name still did not appear in the roster. He was reassured that his name would appear in the June roster. The delay arose because ASHRAE issues new roster only once each year, after the June annual meeting.

JOURNAL: Mr. B. Webb indicated that there was nothing further to report on this subject.

Ray Rite asked whether a software copy of the Toronto minutes existed. Kramer reported that he had such a copy and would e-mail it to him as an attachment.

TECHNICAL ACHIEVEMENT AWARD: Chairman Sami nominated Dan Kramer for the ASHRAE Technical Achievement Award. The committee voted in favor.

This being the last item of business before the committee, there was a motion made and seconded and VOTED for adjournment.