Wes Hamilton offers the following royalty-free article for you to publish online or in print. Feel free to use this article in your newsletter, website, ezine, blog, or forum. ----------- PUBLICATION GUIDELINES - You have permission to publish this article for free providing the "About the Author" box is included in its entirety. - Do not post/reprint this article in any site or publication that contains hate, violence, porn, warez, or supports illegal activity. - Do not use this article in violation of the US CAN-SPAM Act. If sent by email, this article must be delivered to opt-in subscribers only. - If you publish this article in a format that supports linking, please ensure that all URLs and email addresses are active links. - Please send a copy of the publication, or an email indicating the URL to [email protected] - Article Marketer (www.ArticleMarketer.com) has distributed this article on behalf of the author. Article Marketer does not own this article, please respect the author's copyright and publication guidelines. If you do not agree to these terms, please do not use this article. ----------- Article Title: Ways to Design a Solar Thermal Hot Water System Author: Wes Hamilton Category: Word Count: 539 Keywords: plumber,plumbing,construction,contracting,eplyoyment,job,business,home improvement,remodeling,solar Author's Email Address: [email protected] Article Source: http://www.articlemarketer.com ------------------ ARTICLE START ------------------
Depending on how much hot water you need, the hot water system you already have, your budget and where you are located there are a few ways you can put a system together. Below we outline some of the system designs that you could implement. Active "Direct" Open Loop In an active Direct open Loop System the water you use in your bath and taps would be the same water that at one time would have been heated by the sun in your solar panel (or other collector). Colder water is taken from your hot water cylinder and pumped (the active part) to the solar collector to be heated. Hot water is then returned to the cylinder. In the UK to protect from freezing we install a controller that will shut off the supply to to the collector once the outside temperature drops to a certain level. You can click on the picture to see a bigger picture of how this system fits together. We often recommend Active "Direct" Open Loop systems when customers are looking for a simple or low cost solution. In many cases an Active "Direct" Open Loop system can be installed using existing hot water stores and cylinders, most of the existing pipework remains the same and these systems integrate nicely with existing boilers. Active Drain-Back System (with Water) With an active Drain Back system using water the temperature of the water in the cylinder is monitored, once the temperature drops below a certain level water is pumped up to the Solar Collectors to be warmed. When the water is not being used it drains back into the system to avoid freezing. Drain Back systems are also popular due to their ease to install and simple design. Active "Indirect" Closed Loop (With Antifreeze/Glycol) Active "Indirect" systems use a dedicated loop to transfer a fluid such as Glycol between the Solar Collector and the hot water storage cylinder. The fluid is heated up in the collector, this heat is then transfered to the water in the cylinder via a heat exchanger (often a heating coil similar to a heating element in a kettle). The second coil in this kind of system is used to transer heat from other heating methods such as boilers and immersions when the Solar Collectors aren't being used. Active "Indirect" Closed Loop systems are very popular in the UK but slightly more expensive then the direct systems as a twin coil cylinder will need to be installed if you don't already have one and there is more pipework. Passive Thermal Siphon This is where a water storage tank is placed higher then the solar collectors to allow the heat captured by the collectors to rise into the tank and warm the water. This is not a very efficient system but as it doesn't expend any energy it may be useful in some situations. Batch Heaters This is where the storage tank or cylinder is the collector, the water is warmed by the sun as the cylinder warms up. With this type of system thought needs to be given about what happens to the stored heat at night. In Summary We hope this article has helped outline some of your options, has explained some of the systems that are available and what could be implemented in your Solar Thermal system. Wes Hamilton is the owner of PLUMB PRO, INC a full service plumbing company in Alabama. Visit our website for more Free Information and PICTURES. Visit http://www.plumbpro.net/ and http://www.plumbproinc.com/ ------------------ ARTICLE END ------------------ [Non-text portions of this message have been removed]
