Search
Now showing items 31-40 of 41
Performance trends of an air-cooled steam condenser under windy conditions
(Stellenbosch : University of Stellenbosch, 2007-03)
Air-cooled steam condensers (ACSC’s) are increasingly employed to reject heat in modern power plants. Unfortunately these cooling systems become less effective under windy conditions and when ambient temperatures are high. ...
Performance evaluation of air-cooled heat exchangers
(Stellenbosch : Stellenbosch University, 2000-12)
ENGLISH ABSTRACT: The main objective of this study to determine the air-side heat transfer and pressure drop
performance characteristics of commercially available round and elliptical fined tubes. A . computer code to ...
Performance optimization of engineering systems with particular reference to dry-cooled power plants
(Stellenbosch : University of Stellenbosch, 1995-03)
Computer simulation programs were developed for the analysis of dry-cooling systems for power
plant applications. Both forced draft direct condensing air"cooled condensers and hyperbolic natural
draft indirect dry-cooling ...
Rotary regenerator design optimisation and heating surface selection
(Stellenbosch : Stellenbosch University, 1995)
ENGLISH ABSTRACT:
The rotary regenerator is far from a new device and since its invention more than 70 years ago it has developed into a carefully engineered product. They are mainly used for gas to gas heat transfer and ...
Air-cooled condenser steam flow distribution and related dephlegmator design considerations
(Stellenbosch : Stellenbosch University, 2013-12)
ENGLISH ABSTRACT: The steam-side side operation of a practical air-cooled steam condenser is
investigated using a combination of CFD, numerical, analytical and experimental
methods. Particular attention is directed towards ...
Evapotranspiration effects on air flowing over grass in a small glass roofed tunnel
(Stellenbosch : Stellenbosch University, 2007-03)
ENGLISH ABSTRACT: The search for ways of utilizing solar energy for power generation in the arid areas of
the world has led to the investigation of the feasibility of erecting a "solar chimney"
power plant for generating ...
Steam flow distribution in air-cooled condensers
(Stellenbosch : Stellenbosch University, 1996-03)
ENGLISH ABSTRACT:
In this thesis the parameters affecting the steam flow distribution through an air-cooled
steam condenser, as found in power generating plants is investigated. The investigated
condenser configuration ...
Performance characteristics of hybrid cooling towers
(Stellenbosch : Stellenbosch University, 1995-09)
ENGLISH ABSTRACT:
Different wet/dry and dry/wet cooling tower configurations are investigated and the
advantages and disadvantages of separate and combined (hybrid) configurations are discussed.
Some existing hybrid ...
Pressure drop during reflux condensation of steam in an inclined elliptical tube
(Stellenbosch : Stellenbosch University, 1998-09)
ENGLISH ABSTRACT:
Zapke and Kroger developed a model for the pressure drop across flattened tubes
employed in reflux condensers. This model is based on adiabatic two-phase
countercurrent experiments and incorporates the ...
The influence of temperature stratification in the lower atmospheric boundary layer on the operating point of a natural draft dry-cooling tower
(Stellenbosch : Stellenbosch University, 1997-11)
ENGLISH ABSTRACT:
Natural draft dry-cooling towers for power stations are designed to reject heat at a
prescribed rate under specified atmospheric conditions. In the past, cooling tower
designs were based on the annual ...