These consist of a metal (copper) heat pipe, to which is attached a black copper absorber plate, inside a vacuum-sealed solar tube. The heat pipe is hollow and the space inside, like that of the solar tube, is evacuated. The reason for evacuating the heat pipe, however, is not insulation but to promote a change of state of the liquid it contains. Inside the heat pipe is a small quantity of liquid, such as alcohol or purified water plus special additives. The vacuum enables the liquid to boil (i.e. turn from liquid to vapour) at a much lower temperature than it would at normal atmospheric pressure. When solar radiation falls the surface of the absorber, the liquid within the heat tube quickly turns to hot vapour rises to the top of the pipe. Water, or glycol, flows through a manifold and picks up the heat, while the fluid in the heat pipe condenses and flows back down the tube for the process to be repeated.
An advantage of heat pipes over direct-flow evacuated-tubes is the "dry" connection between the absorber and the header, which makes installation easier and also means that individual tubes can be exchanged without emptying the entire system of its fluid.
Some heat pipe collectors are also supplied with a built in overheat protection – when a programmed temperature has been reached, a "memory metal" spring expands and pushes a plug against the neck of the heat pipe. This blocks the return of the condensed fluid and stops the heat transfer.
For condensate return purposes heat pipe collectors should be mounted with a minimum tilt angle of 25°.
Do you suffer from Arthritis? A correctly sized and installed solar panel system on your roof or in your garden can provide enough hot water (@ 40/60 ºC) to allow you to have a long hot soak almost every day for Free.
Yes now you can enjoy the pleasure of relaxing in a hot bath or spa tub without the pain of the electricity bill for heating the water.
There is nothing new about these simple truths, we have just had to wait for solar technology to make the collection of large quantities of hot water a cost effective proposition even in the U.K.
Well the technology is here, and SOLARGREENPOWER can help you to make one of the best investments of your life.
HOT WATER
Hot water sedates and draws out stress. Unlike cold water therapy, warm to hot water is most effective when applied for longer periods. In a non-inflammatory situation, heat reduces pain and infection by opening blood vessels, relaxing muscles, eliminating toxins and inducing perspiration. It reduces blood pressure (Vasodilatation)
BATHS
If you have never given a hot bath a chance, now is the time to try it. A hot bath relaxes the nervous system, relieves sore muscles and joints after strenuous exercise and soothes the pain of rheumatism, arthritis and backaches. If you are troubled by insomnia or tension, a nightly hot soak dissolves stress and prepares the body for a sound sleep. To ease the discomfort of a cold, a hot bath brings blood to the surface and encourages perspiration to release toxins and help the body fight a cold more effectively. If you are chilled and feel a cold coming on, a hot bath can abort the infection before it takes hold.
When taking a hot bath or trying any technique for the first time, start slowly and remain in your own comfort level to suit your needs. You can increase the time and temperature each time. A cold cloth on the forehead will prevent overheating. As a general guide, take the bath as hot as possible for up to 20 minutes and get out of the bath slowly and carefully. If you have serious heart problems or a fever, hot baths are not recommended. Be sure to drink plenty of water before and in the bath and go straight to bed after so you don’t get chilled. If you plan to continue your day’s work, end the bath with a quick cold rinse and plan for a shorter rest of 20 minutes or so.
Professional medical advice should always be sought if in doubt, as the above is intended as general information only.
These consist of a metal (copper) heat pipe, to which is attached a black copper absorber plate, inside a vacuum-sealed solar tube. The heat pipe is hollow and the space inside, like that of the solar tube, is evacuated. The reason for evacuating the heat pipe, however, is not insulation but to promote a change of state of the liquid it contains. Inside the heat pipe is a small quantity of liquid, such as alcohol or purified water plus special additives. The vacuum enables the liquid to boil (i.e. turn from liquid to vapour) at a much lower temperature than it would at normal atmospheric pressure. When solar radiation falls the surface of the absorber, the liquid within the heat tube quickly turns to hot vapour rises to the top of the pipe. Water, or glycol, flows through a manifold and picks up the heat, while the fluid in the heat pipe condenses and flows back down the tube for the process to be repeated.