Electricity + Control June 2017

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PRESSURE + LEVEL MEASUREMENT
Philip Venter is a mathematical and statistical optimisation
engineer, employed at the School for Mechanical and Nuclear
Engineering at the NWU and a part-time Ph.D. student at the
Centre for Business Mathematics and Informatics (BMI) at the
NWU in Operations Research.
Professor Fanie Terblanche is employed as an associated profes-
sor at the Centre for Business Mathematics and Informatics.
His main research interests are the formulation of optimisation
models and the development of appropriate algorithms to gener-
ate solutions for these models.
Professor Martin van Eldik is an associate professor in the
School of Mechanical and Nuclear Engineering where his
research group focuses on the next generation of heat pumps
including the use of CO2 as refrigerant for high temperature
applications.
[2] P.v.Z. Venter PvZ, S.E. Terblanche & M. van Eldik. (2015). Off-
gas power generation optimization using a mixed integer linear
programming model. ORSSA 2015 pp 81-90.
[3] P.v.Z. Venter PvZ, S.E. Terblanche &M. van Eldik. (2015). Improv-
ing Power Generation fromFluctuating Off-Gas Productions. ICUE
2015 pp 225-231.
[4] H. Lund. (2007). Renewable energy strategies for sustainable
development. Energy 32, pp. 912 – 919.
[5] Z. Beihong & L Weiding. (2006). An optimal sizing method for
cogeneration plants. Energy and Buildings 38, pp. 189-195.
[6] J.M. Carrasco, J.T. Bialasiewicz, R.C.P. Guisado & J.I. Leon. (2006).
Power-Electronic systems for the grid integration of renewable
energy sources: a survey. IEEE transactions on industrial electron-
ics 53(4).
[7] S. Fazlollahi, P. Mandel, G Becker & F. Marechal. (2012). Methods
for multi-objective investment and operating of complex energy
systems. Energy 45, pp. 12-22.
[8] S. Fazlollahi & F. Marechal. (2013). Multi-objective, multi-period
optimization of biomass conversion technologies using evolution-
ary algorithms and mixed integer linear programming (MILP).
Applied Thermal Engineering 50, pp. 1504-1513.
[9] M. Poschl, S. Ward & P. Owende. (2010). Evaluation of energy
efficiency of various biogas production and utilization pathways.
Applied Energy. 87, pp 3305-3321.
[10]I. Dincer. (2000). Renewable energy and sustainable development:
a crucial review. Renewable & Sustainable Energy Reviews 4, pp
157-175.
take note
ROUND UP PRESSURE + LEVEL MEASUREMENT
Portable differential pressure measurement with
internal sensor
Kobold, represented locally by Instrotech,
has on offer their highly precise pressure
measuring devices HND-P121/P231 to HND-
P127, with integrated pressure sensors. On
the top of the housing they have two pres-
suremeasurement inputs that are connected
to themeasuring points bymeans of a stable
metal connection and plastic hoses, avail-
able as accessories.
Numerous measuring ranges in the over-
pressure and under-pressure range are avail-
able for various measurement tasks, such
as differential pressure measurement. In
addition to pressure display, these first-rate,
compact, universally applicable measur-
ing units offer additional functions such as
minimum/maximum value memory, a hold
function, tare function, automatic self-shut-
off, or zero point offset.
The devices with an expanded spectrum
of functions also have a logger function, a
peak value memory, minimum/ maximum
alarm, an adjustable measuring cycle, and
averaging.
Key features:
• Integrated pressure sensor
• Differential pressure measurement
• T hose connections
• Serial interface
• Extensive additional functions
• Relative pressure sensors
Areas of application are chemical, pharma-
ceutical and food industries; machine and
apparatus construction as well as piping
and container construction.
Enquiries: Instrotech.Tel. +27 (0) 10 595 1831
or email
• Researchers investigate what happens when volume
quantity of off-gas flaring is regulated and the improved
potential that this could have on power co-generation.
• Steam is generated, in boiler houses, from burnable
off-gases that are not used in the works’ production
processes.
• A certain percentage of these off-gases must be flared
to help with regulation of the off-gas pipeline pressures
since the pipelines are open to atmosphere.
Enquiries: Philip Venter. Email
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