Active Solar Water Heating for Home Hot Water：家用热水的主动式太阳能热水.pptVIP

Taylor D. Miles H. APES 3rd 4/06/10 /photo/222445135/active_solar_water_heater_pressurized_split.jpg They are environmentally friendly Helps save the earth’s energy resources It is the best choice for people who have allergies To use a little energy while saving money You can save between 50%- 80% on your current heating bill Going solar is an excellent start for reducing energy as well as to saving the planet Versatility in almost any climate Can reduce dependence on imported fossil fuels, especially from OPEC Has little environmental impacts; only requires energy from the sun against a solar panel/cell effectively placed on the roof of a house for the best energy collection. Can give way to new jobs in the production of different types of solar water heating systems. Very long lasting and reduces costs in the long run There is five main components of an active solar water heater. They are the collectors, storage tanks, backup heating system, circulation system, and control system Most of the solar water heaters require a well-insulated tank. This two-tank systems preheats the water before it enters the conventional water heater. The collector is constructed with an Al box into an all copper absorber plate, then a low-iron tempered glass to cover the plate is added to create a greenhouse affect that can deliver high temperatures. There are 3 different types of solar collectors for residential applications: Flat-plate collector Integral collector- storage systems Evacuated-tube solar collectors Then there is two types of active solar heating systems: Direct circulation systems Indirect circulation systems .uk/Resource/Img/264789/0076236.jpg Flat-plate collector /resources/sustainability/green_buildings/images/closed_loop_hot_water_diagram.gif /active_dhw.htm The start out cost vary from $4,000 to $8,000 this depends on the following: Size of family to be served Size and brand of solar system Type of roof Building codes Orientation of panels It’s not a