Electrical vs solar water heater: A case study (original) (raw)

1995, Energy Conversion and Management

In the present day environment, high quality energy carriers (in terms of thermodynamics), such as electricity, are being used inefficiently for low quality tasks, such as water heating, which could be done just as well by a low quality energy carrier or source. In other words, we employ every resource in the production of the highest quality of energy and then waste it by going downhill to low quality tasks, which means the wasting of capital investment. However, in the case of solar energy, it is delivered to the earth at a rather low temperature and is, therefore, quite suitable for tasks such as water heating. Also, such energy systems provide economic and physical diversity without any chemical combustion which causes environmental pollution.

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