SOLAR WATER HEATING SYSTEMS - Frequently asked questions

  1. profile image44
    nick01posted 8 years ago

    Before you decide to install a solar water heating system, there are a number of questions that you will have to clarity about. Some more general questions are:

    HOW DOES A SOLAR HEATING SYSTEM WORK?

    A solar heating system consists of a number of components such as a solar collector (flat plate or evacuated tubes), a pump, a controller and a hot water storage tank or geyser.
    The solar collector is installed on the roof and collects the sun’s energy which in turn heats the water. The hot water is then transferred by means of a thermosyphon process or a solar pump to the storage tank or geyser.

    HOW MUCH CAN I SAVE ON ELECTRICITY?

    It is generally accepted that the heating of water takes up about 30 to 50 % of your electricity bill. At current electricity prices a solar water heater will pay itself within 2 to 5 years. After that you then have free hot water for the next 18 to 20 years. With the rapid increase in the price of electricity, this is one investment that you will never regret.

    FLAT PLATE COLLECTOR OR EVACUATED TUBES?

    Both collectors can be used with good results. The flat plate collector will cost less than the evacuated tubes, but the latter has some clear advantages such as:
    •    Heat absorption is superior to that of a flat plate collector, especially on cloudy days and during winter
    •    The vacuum in the tubes acts as heat insulator and retains heat even under extreme environmental conditions like cold winter temperatures and wind. Flat plate collectors lose a considerable part of the heat energy collected back to the environment.
    Benefits of flat plate collectors are:
    •    Simple technology that can easily be built by anybody with basic knowledge
    •    DIY guides are readily available to help you build your own solar water heater
    •    Virtually no maintenance required. No vacuum that can be lost due to breaking of a glass tube.
    •    Flat plate collectors can be produced at a much lower cost than evacuated tubes.

    WILL A SOLAR HOT WATER HEATING SYSTEM WORK ON A CLOUDY DAY?

    Yes. Although the heat output of the solar collector is reduced on overcast days it will still be able to provide heating. Approximately 25-30% of the sun’s energy actually gets through the clouds.

    DO I HAVE TO REPLACE MY EXISTING GEYSER?

    No. Most suppliers have a conversion kit available so that you can convert your old geyser into a solar system.

    WILL I SEE THE GEYSER ON THE ROOF?

    No. You have a choice to install the geyser on the roof or inside the roof. With a solar pump system your geyser can be installed wherever you choose.

    CAN I INSTALL A SOLAR ON A FLAT ROOF?

    Yes. A specially designed steel frame can be supplied to install the solar collector on a flat roof.

    WHAT WILL IT COST?

    On average an evacuated tube system will cost between R12 000 and R15 000. You may also qualify for a rebate from ESKOM or your local municipality.
    If you build your own flat plate collector you will save about 70% of the cost. You will not be eligible for a rebate.

    WHAT DO I NEED TO BUILD MY OWN FLAT PLATE COLLECTOR?

    There are a number of DIY guides available. This will give you step by step instructions and show you in detail how to build your solar water heater.

 
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)