Attributes of a Solar Hot Water Tank
Posted by admin on August 12th, 2009 filed in Uncategorized
The most popular implementation of Solar Heating are systems created to warmth hot water for homes. A central component of such systems it the solar hot water tank, used to store the solar thermal energy. A Heat Exchanger moves heat produced in the Collector to the water in the well-insulated tank, where it can be stored until it’s used in a bath or shower. Typical character of a solar hot water tank compared to conventional boilers or hot water tanks are:
- For an household of a given size the volume – and so the storage capacity – of a solar storage tank is considerably high.
- Because heat rises, the shape of a solar tank must be tall and thin, so as the water stratifies in the tank, at the bottom, the solar heat exchanger is using cold water, and the heated water will rise to the top of the tank. The outlet is at the top of the tank, where the water is hottest.
- Insulating prevents heat loss and thus helps store heat for days, not merely hours.
- There are at least two heat exchanging units: the bottom of the tank transfers solar heat to the tank, and the upper part allows for more heating by another source which is turned on when the water falls below a specific temperature. Therefore, hot water is never unavailable.
Normally a solar hot water tank will be dimensioned to about the twice dimension of the probable amount of expenditure per day. Concerning this, the container for a family with 4 people and a standard spending of 40 litres hot water per head and day should seize about 300 to 320 litres. To avoid potential hygienic problems in bigger households with an highly vacillating total consumption per day it’s often recommended to use Solar Combisystems instead.
Properly done, the insulation of a solar hot water tank can help to improve effiency of a system dramatically.
Leave a Comment