ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Adsorption vs. Absorption Chillers: Applications and Use Overview

Updated on September 20, 2010

Industrial chillers are refrigeration systems that are based on two chiller technologies - adsorption and absorption. While both are advantageous in providing high-quality air conditioning, they differ widely based on their size, construction, working principle, as well as application. Adsorption chillers are purely hot water driven, whereas absorption chillers are driven by hot water, steam, or combustion. There have been many recent innovations in the development of both adsorption and absorption chillers, typically a reduction in their size, complex construction, volume, and weight.

Adsorption chillers work on the principle of adsorption using solid sorption materials such as silica gel and zeolites. These types of chillers are known for their robust construction, ease of installation, and in many cases, considered more advantageous than absorption chillers. There are no possibilities of crystallization, corrosion, hazardous leaks, and the electricity consumption is minimal. This makes them ideal for use in commercial as well as industrial air conditioning, process cooling, and waste heat recovery applications.

The absorption type of chillers is the most common source of commercial climate control and industrial machinery cooling. They use a solution containing water and lithium bromide salt to absorb heat from the surroundings. Since there is no use of CFC's or ammonia, the cooling process is environment friendly. Both adsorption and absorption types of chillers are connected through a network to chilled ceilings or fan coils in room installations.

Apart from the technology used, various other parameters differentiate an adsorption chiller from an absorption chiller. The typical cooling capacity of an adsorption chiller ranges from 5.5 to 500 KW, whereas the cooling capacity of an absorption chiller ranges from 4.5 KW to 5 MW. Adsorption chillers use butterfly valves for simpler operations, while absorption chillers use 3-way control valves.

Advantages of Adsorption Chillers:

  • No crystallization, corrosion, hazardous leaks, or chemical disposal issues
  • Low operational costs and maintenance
  • Only minor service required, once every 3 years
  • More than 30 years of machine life
  • Low carbon emissions, eco-friendly operations
  • No vibration or noise
  • Simple and continuous operations
  • Operates over a wide range of temperature for hot, cool and cold water

Advantages of Absorption Chillers:

  • Most distributed chillers worldwide
  • Efficient as gas turbines produce electricity
  • Driven by hot water and hence advantageous than conventional air conditioners
  • No CFC’s or Freon

Absorption Chillers Vs Adsorption Chillers – Which is Better?

Though absorption chillers are more efficient, their lifetime (7 to 9 years), complexity, high maintenance time, and low corrosion protection are some constraints. Conversely, adsorption chillers are highly reliable with a chiller life expectancy of more than 30 years. The following table illustrates the advantages of adsorption chillers over absorption chillers.

FACTORS
ADSORPTION CHILLERS
ABSORPTION CHILLERS
Corrosion Protection
Not Required
High Corrosion Protection Required
Crystallization
No Crystallization
Very High
Inhibitor
Not Required
Heavy Metal Inhibitors
Life Expectancy
Greater than 30 Years
7 to 9 Years
Complexity
Simple, Easy Mechanical Operation
Complex, Chemical Operation
Replacement Requirements
Not Required
Heat Exchangers, Boilers, Absorbent Replacement Required
Temperature
Down to 122°F
Shut down at 180°F, Needs Back-up Heater
Chilled Water Output
40°- 55°F
48°F or More
Comparison of Adsorption Chillers vs Absorption Chillers

Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)