Glen Wilson Munters AirT UK Seminar Presentation

7/23/2019 Glen Wilson Munters AirT UK Seminar Presentation

1/35

Munters Seminar Presentation

1


2/35

Introuction to Munters

The effects of humidity

Sources of moisture

Methods of dehumidification

Applications overview and case studies

Agenda


3/35

Introduction to Munters

3


4/35

Munters began trading in 1946 in the UK and incorporated in 1955

World leader in dehumidification and other high end air treatment technologies

3,000+ employees serving customers in more than 30 countries

In-house design services

Full engineering capability

Installation capability to CDM

Full Service support

Headquarters in Stockholm, Sweden

Munters Key Facts

Munters Group has over 300,000 air treatment systems installed worldwide


5/35

A Fast Introduction to Munters Air Treatment

no.

5

Over 300,000 successful applications for comfort, process & environmental

protection


6/35

The Effects of Humidity

6


7/35

Most materials are

7

Unaffected bytemperature change

Affected by

moisture change


8/35

Energy consumption

Microbiological growth

Test equipment accuracy

Electrical conductivity

Degradation of buildings and products

Product drying issues

Refrigeration plant efficiencyAesthetic presentation

Chemical reactions

Moisture regain

Effects on People

Condensation Corrosion

Reducedproductivity

Effects of Humidity

no.

8

0 10 20 60 70 80 90 10030 40 50

Steel

Non-ferrous metals

Gold plated contacts

Wire insulation

Rubber and elastomers

Mould, mildew, fungus

Effective / EconomicStorage RH%

Relative Humidity

Good protection Some protection Poor protection


9/35

Annual Mean Relative Humidity

9

In most places around the world the average relative humidity is over 70%

0

RelativeHumidity

20

40

60

80

100

SanFrancisco

Miami

RiodeJaneiro

Toronto

Dublin

Tokyo

Melbourne

Singapore

Rome

Munich

Amsterdam

Athens

Karachi

Lagos

London

Paris

Stockholm


10/35

UK Average Climate

10

Temperature =10CRelative humidity =80% RH


11/35

Sources of Moisture

11


12/35

Moisture Load Calculations

12

Unintendedventilation

Intentional

ventilation

Evaporation of

water

Emission frompeople

Diffusionthrough materials

Evaporationfrom materials Emission from

combustion


13/35

What is Relative Humidity?

13

1 kg air

80% RH

6g

10 C30 C

23% RH

1 kg air

6g

% RH is a comparison between: how much moisture is in the air and how much

moisture the air is able to hold.

At 100% RH the air is saturated and water condenses out.

1 kg air

100% RH

6g

6.5 C


14/35

Methods of Dehumidification

14


15/35

15

Heating

Desiccant

Dehumidification

0 2010 30 40

6

% RH

-10

2

4

8

10

12

14

16

18

20

405060708090100

Cooling

Methods of controlling humidity


16/35

16

Psychrometrics

Temperature C

% Relative Humidity

AbsoluteHumidity

Dewpoint


17/35

17

Ventilation air has to have a lower moisture content to beeffective and is therefore at the mercy of changing

weather conditions

Ventilation

-10 0 2010 30 40

DRY - BULB TEMPERATURE C

2

4

6

8

10

12

14

16

18

20

405060708090

MOISTURECONTENTg/Kg

% RH100


18/35

18

Absolute humidity unchanged

Lowers relative humidity

Dewpoint unchanged

Expensive in energy terms if comfort control is

not required

Heating

% RH

-10 0 2010 30 40


2

4

6

8

10

12

14

16

18

20

405060708090

M

OISTURECONTEN

Tg/Kg

100


19/35

Cooling

19

Will lower RH after cold air is re-heated

Will reduce absolute humidity

Efficiency falls significantly below 10C

Wet coils = high maintenance and corrosion

HCFCs

-10 0 2010 30 40


2

4

6

8

10

12

14

16

18

20

405060708090

M

OISTURECONTENTg/Kg

% RH100


20/35

20

Reduces RH

Reduces absolute humidity

Reduces dew-point

Uses lower airflows

Desiccant Dehumidification

-10 0 2010 30 40


2

4

6

8

10

12

14

16

18

20

405060708090

M

OISTURECONTEN

Tg/Kg

% RH100


21/35

21

Desiccant Dehumidification

-10 0 2010 30 40


2

4

6

8

10

12

14

16

18

20

405060708090

M

OISTURECONTEN

Tg/Kg

% RH100Continued

System runs dry = longer life

Multiple energy sources can be used

eg. gas, steam, MPHW Not temperature sensitive (+40C to -40C)

Can dry to -40C dewpoint


22/35

22

Process (humid) air: passes through the drying wheel and leaves as dry air.

Heated Reactivation air: collects the moisture adsorbed by the drying wheel and

leaves as wet air.

Munters Desiccant Wheel Method


23/35

23

Humidity Control for an Unheated Building

** *

**

**

Heating

Does not remove

Moisture !

Expensive

With heat, the air expands

and can hold more moisture,

Hot air rises!

Cooling Desiccant

DehumidificationPoor performance

below 10CPoor control,

Poor distribution

Removes moistureeven down to

- 40C


24/35

24

Desiccant vs. Cooling?

Moisture

removal

capacity

Temperature 0C

It is quite common to combine both pre-cooling &

desiccant dehumidification to provide solutions


25/35

Applications Overview

25


26/35

Effective, accurate and cost-effective control of humidity and temperature forms a critical element ina number of different commercial and industrial applications.

As the inventors of desiccant wheel technology, Munters has unrivalled experience and expertise in

the development of energy efficient solutions for a wide range of challenging applications, including:

Food production, processing and cold storage

Pharmaceutical manufacturing

Data Centres

Storage of archives, paper, defence equipment, etc

Corrosion control in suspension bridgesLithium battery, electronics & semi-conductor manufacturing

Ice rinks and swimming pools

Paint finishing plus much, much more

Customer Applications


27/35

Applications in Detail:Preservation

27


28/35

Main Customer

Museums

Archives

Libraries and Galleries

Art and artefact storage facilities

Vehicles including classic car storage

Public and Private sector organisations

Defence forces

Shipping and Ferries

The Customer

28


29/35

no.29

Effects of high humidity in Preservation

Inconsistent temperature leads to condensation (particularly in winter)

Shorten the life of photographs, paper, due to fungal and bacterial growth Increased cost of restoration for artwork

Significantly impact on value if damage has occured

Corrosion develops on metals

Bronze develops bronze disease

High humidity can make public areas uncomfortable

Reduce revenue if visitors number (fall due to climate)

High repair and maintenance costs to repair damage to

building fabric

Increased drying times (clothes drying)

Shorten life of cables (bridges)

High energy bills (using heating in storage areas)

Unforseen costs to replace items affected by moisture

damage


30/35

Application areas

30

Display

Cases

Controlled Humidity Environments

(CHE)

Public Spaces Ship lay up

Archive

sBridges

Clothes Drying

Film

Museums


31/35

Consistent relative humidity levels year round

No seasonal fluctuations Comfortable climate conditionsHalt corrosion

Prevent mould and fungal growth

Ensure people comfort

Increase life of documents and national treasures Increase paper life from 50 to 200 years Increase life of film/photos from 25 to 1,000 years

Protect buildingsReduce building maintenance

Prevent unnecessary closures for repairs

Reduce labour costs

Reduce heating requirements in storage - SAVE ENERGY

Benefits of Dehumidification

no.

31

M


32/35

Solution:

Munters help to maintain consistent humidity controlled

environments in numerous display cabinets, museum spaces, art &

collection stores, including the Mona Lisa at the Louvre

Outcome: Important documents, artwork, artefacts, metals and more are

protected and preserved for generations to come.

There is no requirement to heat storage areas, reducing energy

requirements (in some cases)

Problem:

Museums need to protect valuable items from humidity related

damage. Materials such as paper and canvas will be damagedby mould growth if not properly protected. Metals are highly

susceptible to corrosion if relative humidity exceeds 70% RH.

Museums


33/35

Company Application

Danish State Archives Storage of documents

National Film Archives Film Storage

Mary Rose Trust Display cabinet

Orford Museum Display cabinets

Constantine Art Storage Art Storage

British Library Protection of building

Scottish Film archive Storage protection of films

Royal Yacht Britannia Temporary for repairs

Stena Line Ferries Seasonal lay up (Winter)

Royal Botanic Gardens Seed storage

Royal College of Nursing Archive storage

Royal Mint Coin storage Crown Jewels Vault storage

Clothes Drying Clothes Drying

Carl Von Linne Archives Storage of books and other items

Severn Bridge Preservation of cables

Reference List


34/35

Some of our Global Customers
http://en.wikipedia.org/wiki/File:Volkswagen_logo.svghttp://en.wikipedia.org/wiki/File:Volkswagen_logo.svg


35/35

Munters Air Treatment

Questions?

Date post:	17-Feb-2018
Category:	Documents
Upload:	moe-latt
View:	220 times
Download:	0 times

Glen Wilson Munters AirT UK Seminar Presentation

Documents