Post on 17-Oct-2015
description
HEAT Exchangers
Presenter:
Zoltn EgyhaziMsc.M.E, Head of DH
Dep.
***Danfoss Kft.
1139 Budapest, Vci u. 91Dtum: 2008.09.07
***
- Danfoss International Background- Danfoss Three Main Divisions- Product range of Heating Division- Principle of Heat Exchanger- Manufacturing Technology of Heat Exchangers- Task of Heat Exchanger- Sizing, Dimensioning- Application example
Content of the presentation: (Danfoss Heat Exchangers)
A MULTINATIONAL COMPANY
Location of the center: DenmarkFamily owned company
Main data:- annual turnover 3 milliard EUR- more than 25.000 employee worldwide- manufacturing capacity 250.000 pc/day- more than 30 year experience
Europe North Latin Afrika zsia Pacific Sum.America America
Manufacturing comp. 43 11 2 1 5 62Sales companies 71 6 6 1 15 2 101
We are one of these 71 pc. of companies
Product range (three main divisions)
Danfoss Motion Technology (Frequency converters)
Danfoss Heating Technology
Danfoss Cooling Technology & Air Conditioning
Heating Technology (product portfolio, overview)
-Self acting control valves-Motor actuated valves-Electronic controllers-Ball valves
- Brazed Heat Exchangers- Gasketted heat exchangers - Heating Substations
Plate Heat Exchangers (principle, design, therminology)
Primary flow
Primary return
Secondary flow
Secondaryreturn
Plates Water flows opposite direction
Water flows opposite direction
Heat Insulation
Mounting bracket
Front plate
End plate
Manufacturing Technology (Brazed)
Stainless steel plates, covered by brass.Manufacturing of the plateswith special tool.
They put the plates onto each other according to required capacity. Heat Exchangers have been
put into an oven.Brass melts here.Brazed connection is redy.
Assembly Technology (Gasketed)
Plates are pressed together with screws
Plate sandwich
Task of the Heat Exchanger
When is it required to use Heat Exchanger?
Primary Side Secondary side
When we have to separate two sides, only heat transfer is allowed.
Material or Content 1Nominal Pressure 1
Material or Content 2Nominal Pressure 2
HEAT EXCHANGER (indirect system) If it is not necessary,
you can use direct system. See an
example:
Heat TransferHeat Transfer
Plate Heat Exchangers (two different type, advantages, disadvantages)
Brazed Heat Exchangers:
Light weight
There is no leakage
It can be cleaned only with acid(flushing)
Gasketed Heat Exchangers:
Heavy weight
Leakage can occure
It can be disassembled and cleaned manually
Sizing (how to use the sizing software)
Danfoss Heat Exchanger Calculation Tool: Danfoss Manuals:
Application example:
Ksznm a Megtisztel Figyelmet! (Egyhzi Zoltn okl. gm. terletvezet)
within our core businesses
Our core business is district heating and HVAC/Central
Heating
a global leader
We will establish a global position as number one
growth is our pursuit
... as a highly respected company
We want recognition as the best price to performance
supplier and customer partner
by mastering advanced technologies
We will supply innovative products with fast delivery and
high service by use of advanced technologies
in customer applications
We will extend our core competencies related to
application knowledge and product design
which improves quality oflife
Our products contribute to improving human comfort and encourage to environmental consciousness via
energy savings
while creating value to all stakeholders
It is our aim to increase the value for all stakeholders by applying Business Excellence