Extraordinary Professors
Dr A Zapke
Contact details
Home and postal address: Lilienstr. 9 45133 Essen Germany
Work address: ENEXIO Management GmbH Dorstener Str. 18-29
44651 Herne Germany
Cell phone number: +49 160 9903 1195
Telephone number: +49 234 980 2618
E-mail: albert.zapke@enexio.com
Personal data
Surname and first name: Zapke, Albert
Identity number: 700514 5013 084
Date and place of birth: 14 May 1970, Otjiwarongo, Namibia
Marital Status: Married, 2 children
Nationality: South Africa
Home language: German
Other languages: English, Afrikaans (fully trilingual)
Educational Qualifications
Last school attended: Deutsche Oberschule Swakopmund, Swakopmund, Namibia
(1985-1988)
Subjects passed: Science, Mathematics, Geography, German, English,
Afrikaans
Higher Education
University attended: University of Stellenbosch (1989-1997)
Degrees obtained: B. Eng (Mechanical Engineering) Cum Laude, 1992
M. Eng (Mechanical Engineering) Cum Laude, 1994 Ph. D. (Mechanical Engineering), 1997
Postgraduate specialisation: Heat Transfer and Flow Mechanics with the emphasis on cooling
plants for the power industry
University attended: University of the Witwatersrand (2000-2002) Degrees obtained:
Master of Business Administration, 2002
Project specialization: Scenario planning exercise on the future use of energy sources
such as coal, gas, renewable energy and nuclear energy for the generation of electrical power
Sport achievements: Represented the university at the 1990 and 1994 South African
Universities Soccer Tournament
Undergraduate vacation work: 1) 7 weeks at Littleton Engineering Works, Pretoria, 1989, 1990
2) 6 weeks at Thyssen Aufzüge, Neuhausen, Germany, 1991 Awards received: 1)
AECI prize for best 1st year mechanical engineering student, 1989
2) SAIMegI medal for the best final year project presentation, 1992
3) SAIMegI plate for the best final year project, 1992
4) Mechanical Engineering Chairman’s prize for contributions and achievements during
the final year, 1992
5) Engineering academic colours: B. Eng passed Cum Laude, 1992
6) Associate Professor Extraordinary at Stellenbosch University January 2015 to December 2017.
Employment History
Name of company: ENEXIO Management GmbH (was previously part of the GEA Group of Companies)
Type of company: ENEXIO Management GmbH is part of the ENEXIO Group of Companies. The ENEXIO head
office is in Herne, Gemany. ENEXIO is an engineering and manufacturing company. The company
designs, manufactures and erects cooling systems for power plant applications.
Current position: 1) Global Head of R&D / Technology, reporting to the Head of Operations
(September 2016 - present).
Name of company: Kelvion Thermal Solutions (Pty) Ltd (was previously GEA Aircooled Systems (Pty)
Ltd) Type of company: GEA Aircooled Systems is part of the global GEA group. The GEA head office
is in
Bochum, Gemany. GEA Aircooled Systems is an engineering and manufacturing company. The company
designs, manufactures and erects cooling plants for the power and the petrochemical industries.
Positions held: 1) Senior Thermal Design Engineer, reporting to the General Manager
Engineering (January 1998-June 2000).
Responsibilities included the thermal design of heat transfer equipment offered by GEA, namely
air-cooled condensers for the power and the petrochemical industries, air- cooled process coolers,
shell and tube heat exchangers and plate heat exchangers.
The thermal design usually forms the first step of the design process when a number of
alternatives/concepts are developed/considered in order to arrive at an optimized solution. The
design process is accompanied by cost estimates of the cooling systems in order to compare the
various alternatives on an economical basis (capital cost, operating cost and profit).
Further responsibilities included research and development related work such as quality control of
the thermal performance of GEA products and research projects in conjunction with universities.
2) Senior Product Manager and Head of Contracts Department, reporting to the Operations Director
(July 2000 – December 2001).
Responsibilities included managing of engineering projects as well as the co-ordination and
management of the Contracts Department.
3) Manager Contracts and Engineering, reporting to the Managing Director (January 2002 – June
2004).
Main responsibilities included managing the Contracts Department, as well as the Engineering and
Drawing Office Departments and managing engineering and construction projects for the company.
4) General Manager Contracts and Engineering, reporting to the Managing Director (July 2004 –
September 2011). Main responsibilities remain as per previous position.
5) Director Contracts and Engineering, reporting to the Managing Director (October 2011 – August
2016).
Technical Publications
1) Zapke, A. and Kröger, D. G., The influence of fluid properties and inlet geometry on flooding in
vertical and inclined tubes, International Journal of Multiphase Flow, Vol. 22, No. 3, pp. 461-472,
1996.
2) Zapke, A. and Kröger, D. G., The effect of fluid properties on flooding in vertical and inclined
rectangular duct and tubes, ASME Fluids Engineering Division Conference, FED-Vol. 239, Vol. 4, pp.
527-532, 1996. Presented at the conference by D. G Kröger.
3) Zapke, A. and Kröger, D. G., Pressure drop during gas-liquid countercurrent flow in inclined
rectangular ducts, 5th International Heat Pipe Symposium, Melbourne, 1996. Presented at the
conference by D. G Kröger.
4) Zapke, A. and Kröger, D. G., Vapor-condensate interactions during counterflow in inclined reflux
condensers, ASME National Heat Transfer Conference, HTD-Vol. 342, Vol. 4, pp. 157-162, Baltimore,
August 1997. Presented at the conference by A. Zapke.
5) Zapke, A. and Kröger, D. G., Countercurrent gas-liquid flow in inclined and vertical ducts – I:
Flow patterns, pressure drop characteristics and flooding, International Journal of Multiphase
Flow, Vol. 26, pp. 1429 - 1455, 2000.
6) Zapke, A. and Kröger, D. G., Countercurrent gas-liquid flow in inclined and vertical ducts –
II: The validity of the Froude-Ohnesorge number correlation for flooding, International Journal of
Multiphase Flow, Vol. 26, pp. 1457 - 1468, 2000.
7) Zapke, A., Goldschagg, H. and Kröger, D. G., Flow limitations in a dephlegmator and
modifications for the performance improvement of the Matimba Power Station air-cooled steam
condensing system, Presented at the 13th IAHR Cooling Tower Conference in Poitiers, France, June
2005.
8) Jacques Muiyser, Danie N. J. Els, Sybrand J. van der Spuy, Albert Zapke, Measurement of air flow
and blade loading conditions at a large-scale cooling system fan, R & D Journal of the South
African Institution of Mechanical Engineering 2014, 30, 30-38.
9) Jacques Muiyser, Danie N. J. Els, Sybrand J. van der Spuy, Albert Zapke, INVESTIGATION OF LARGE-
SCALE COOLING SYSTEM FAN BLADE VIBRATION, Proceedings of the ASME 2014 Turbine Technical Conference
and Exposition, TE2014, June 16-20, 2014, Düsseldorf, Germany.
10) Chris MEYER, Albert ZAPKE, A MODELING STRATEGY FOR LARGE-SCALE MECHANICAL DRAUGHT AIR-COOLED
SYSTEMS, 10th International Conference on CFD in Oil & Gas, Metallurgical and Process Industries,
SINTEF, Trondheim, NORWAY, 17-19th June 2014.
11) Jacques Muiyser, Danie N. J. Els, Sybrand J. van der Spuy and Albert Zapke, Simultaneous
measurement of air flow and blade loading conditions at large-scale cooling system fans, R&D
Journal of the South African Institution of Mechanical Engineering. (Paper still under review.)
12) Jacques Muiyser, Danie N. J. Els, Sybrand J. van der Spuy and Albert Zapke, The determination
of fan blade aerodynamic loading from a measured response, Proceedings of the ASME 2015 Turbine
Technical Conference and Exposition, TE2015, June 15-29, Montreal, Canada.
13) Wilhelm Beyers, Albert Zapke and Gerhard Venter, Improved Cover Type Header Box Design
Procedure, R & D Journal of the South African Institution of Mechanical Engineering 2015, 31,
76-85.
14) Wilhelm Beyers, Albert Zapke and Gerhard Venter, Modelling the structural behaviour of a round
nozzle to flat plate interface in pressure vessels, 10th South African Conference on Computational
and Applied Mechanics at Potchefstroom South Africa, October 2016.
15) Charles H. O. Lombard, Daniel N. J. Els, Jacques Muiyser and Albert Zapke, Analysis of a
Large-Scale Cooling System Fan Gearbox Loads, ASME Turbo Expo 2017: Turbomachinery Technical
Conference and Exposition, June 2016.
16) Ruan A. Engelbrecht, Sybrand Johannes van der Spuy, Chris J. Meyer and Albert Zapke, Numerical
Investigation of the Performance of a Forced Draft Air-Cooled Heat Exchanger, ASME Turbo Expo 2017:
Turbomachinery Technical Conference and Exposition, June 2016.
RESEARCH AND DEVELOPMENT PROJECTS AT STELLENBOSCH UNIVERSITY
TOPIC STUDY LEADERS APPROXIMATE TIME SPAN
APPROXIMATE FUNDING
Large air-cooled condenser CFD, carried out by PhD student Francois Louw.
Prof. D. G. Kröger 2011 Confidential (contract research)
Large scale air-cooled condenser mechanical equipment loading, M. Sc. Thesis Jacques Muiyser.
Large scale air-cooled condenser mechanical equipment loading, PhD Thesis Jacques Muiyser.
Bridge effect on fan performance and blade vibration, N. R. Basson.
Dr. Danie Els and Dr. Johan van der Spuy
Dr. Danie Els and Dr. Johan van der Spuy
Dr. Danie Els and Dr. Johan van der Spuy
2009 - 2011 R270,000.00 student
support / bursary and other expenses shared by GEA and Howden.
2012 - 2015 R1,000,000.00 student
support / bursary and other expenses shared by GEA and Howden.
2013 - 2015 THRIP project conducted
by Stellenbosch University on the basis of funding provided for Jacques Muiyser projects.
OpenFoam CFD modelling of large- scale air-cooled condensers.
Performance and thermo- mechanical cost evaluation of API 661 air-cooled heat exchanger, S. Ackers.
Prof. C. Meyer 2012 - ongoing Confidential (contract
research)
Prof. H. C. R. Reuter 2012 All student class fees and living expenses paid
to student / university directly and R11,200.00
contributed to bundle performance testing.
API air-cooled heat exchanger cover-type header FEA and design methodology project, W. Beyers.
Prof. G. Venter and Wilhelm Beyers
2013 - 2014 R190,000.00 student
support / bursary and other expenses.
API air-cooled heat exchanger Prof. G. Venter and 2015 - ongoing R940,000.00
student
plug-type header FEA and design methodology project at PhD level,
W. Beyers.
Wilhelm Beyers support / bursary and other expenses.
Gearbox loading project with reference to air-cooled condenser applications at M.Sc. level, Osche
Lombard.
Hybrid cooling system and axial flow fan development for the reduction in water consumption of CSP
plants (H2020 – MinWaterCSP).
Dr. Danie Els and Jacques Muiyser.
Prof. J. van der Spuy, Dr. Danie Els and Prof. C. Meyer
2015 - 2016 R340,000.00 student
support / bursary and other expenses shared by GEA and Hansen. Hansen is the main contributor.
2016 - 2017 Funding for cooling system
and axial flow fan development within the consortium is approximately EUR3.7 million, by the
European Commission. Stellenbosch received EUR650,000.
ROLE AS EXTERNAL EXAMINER FOR POST GRADUATE STUDENTS
TOPIC CANDIDATE STUDY LEADERS
YEAR
Evaluation of the performance characteristics of a hybrid (dry/wet) induced draft dephlegmator.
Air-cooled condenser steam flow distribution and related dephlegmator design considerations.
Inlet manifold tests and performance evaluation of dephlegmators in air- cooled condensers
Neil Raymond Anderson Prof. H. C. R. Reuter 2014
Michael Owen Prof. D. G. Kröger 2013
Leslie van Zyl Smit Prof. D. G. Kröger 2000
CONSULTING ROLES
Currently contracted to EPRI (Electric Power Research Institute), Palo Alto, as an advisor.
Gateways
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Undergraduate
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Research