<body><script type="text/javascript"> function setAttributeOnload(object, attribute, val) { if(window.addEventListener) { window.addEventListener('load', function(){ object[attribute] = val; }, false); } else { window.attachEvent('onload', function(){ object[attribute] = val; }); } } </script> <div id="navbar-iframe-container"></div> <script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script> <script type="text/javascript"> gapi.load("gapi.iframes:gapi.iframes.style.bubble", function() { if (gapi.iframes && gapi.iframes.getContext) { gapi.iframes.getContext().openChild({ url: 'https://www.blogger.com/navbar.g?targetBlogID\x3d8968604820003269863\x26blogName\x3dChemical+%26+Process+Technology\x26publishMode\x3dPUBLISH_MODE_BLOGSPOT\x26navbarType\x3dBLUE\x26layoutType\x3dCLASSIC\x26searchRoot\x3dhttp://webwormcpt.blogspot.com/search\x26blogLocale\x3den\x26v\x3d2\x26homepageUrl\x3dhttp://webwormcpt.blogspot.com/\x26vt\x3d6402931565399164945', where: document.getElementById("navbar-iframe-container"), id: "navbar-iframe" }); } }); </script>

Chemical Process Technology

Continue to learn tips, knowledge and experience about Chemical Process Technology...

Enter your email address:


CLOSE WINDOW


 

Chemical & Process Technology

A place to share knowledge, lesson learnt...

Monday, June 23, 2008

Display problem ? Click HERE



Recommended :
Subscribe FREE - Chemical Processing

Chemical Engineering JUNE 2008 release has shared a new FAYF. This FAYF is related to some tips on Dehumidification.

What is Dehumidification ?
Dehumidification is a process to reduce the level of humidity in air to a level for good health, cleanliness and preserve structure & quality of material.

Why dehumidify air ?
Human health - As humid air can cause mold and mildew to grow inside homes, it potentially increases human health risks.

Prevent moisture regain
- Dried food such as rice, bread, etc are dry in nature to maintain it structure, avoid mold growth and low decaying process, . Maintaining moisture in air prevent dry food becoming wet.

Prevent condensation - Moisture in are contact with cold surface like refrigerant pipe, fridge, etc would cause condensation.

Prevent corrosion - Condensed water on metal surface would promote corrosion.

Drying - Dried air can be used to reduce moisture content in product.

How air is Dehumidify ?
Three methods are common used in dehumidifying. There are :
(i) Cooling
- Cool air below dew point and moisture in the air is condensed and drained out.

(ii) Adsorption
- Humidity is reduced with an adsorbent material as silica gel or activated alumina. Adsorption is a physical process where moisture is condensed and kept in material. Adsorbent material can be reactivated by passing hot gas.

(iii) Absorption
- Humidity is reduced with an absorbent material such as calcium chloride solution. Absorption involves a change in the physical or chemical structure of the material.

In this FAYF, only Cooling and Adsorption process are discussed.

In addition, the FAYF briefly compare the advantages and disadvantages of Cooling and Adsorption process. Basically cooling is economic and consider when dew pointing level is not that stringent. Adsorption process is used when a very dry air is required.

Read more in...


FAYF - DEHUMIDIFIER
(Click here*)



Note :
*This FAYF is only available FREE to Chemical Engineering Magazine registered user. Login required. Registration FREE.
** Download immediately as article available FREE within short period (JUNE 2008 only)
*** Found lost link or unable to download, may contact me...

Technology

Labels: , , ,

posted by Webworm, 10:32 PM

0 Comments:

Post a Comment

Let us know your opinion !!! You can use some HTML tags, such as  <b>, <i>, <a>

Subscribe to Post Comments [Atom]

Links to this post:

Create a Link

Home:

<< Home