| Category | Format | Size |
|---|---|---|
| Fifth Grade Science Volume 1, Textbook Edition | pptx | 6 MB |
"Make a Solar Water Heater" Light PPT Courseware
Description
"Make a Solar Water Heater" Light PPT Courseware
A. Object color and heat absorption
(1) Dark colors heat up faster than light colors
(2) Rough surfaces heat up faster than smooth surfaces
B. Direct sunlight, oblique radiation and heat absorption
(3) Placed at a perpendicular angle to the sun, it heats up quickly.
1. Structure of solar water heater
Solar water heaters are composed of: collectors, insulated water storage tanks, connecting pipes, brackets and control systems.
2. Materials for manufacturing solar water heaters
Materials for manufacturing solar water heaters: heat-absorbing materials, insulation materials, water storage tanks, brackets, etc.
working principle:
The working principle is to use the collector to absorb sunlight, convert the light energy into heat energy, and store the hot water through the water storage tank.
work process :
The solar energy is absorbed through the collector tube to heat the cold water, and then the hot water is sent to the insulating box to maintain a certain temperature. When we need hot water, the hot water is released through the control system and a certain amount of cold water is added to the collector for heating.
Improve the efficiency of solar water heaters?
The most important collector uses vacuum collector tubes. It is made of double-layer glass, and the inner surface is coated with a heat-absorbing layer, which can fully absorb sunlight, just like the internal structure of a thermos bottle. There is a vacuum between the two layers to prevent and reduce heat convection inside and outside the tube. The insulated water tank is made of double-layer stainless steel plates, which are mainly strong and rust-proof. In the middle is a polyurethane overall foam insulation body, which can effectively maintain water temperature.
judge
1. Solar water heaters convert light energy into heat energy. ( )
2. Solar water heaters can also work well on days when there is no sun. ( )
3. When designing a solar water heater, you must also consider its thermal insulation performance. ( )
4. The component of the solar water heater that efficiently absorbs solar energy is the collector. ( )
5. The reflective material at the bottom of the solar water heater can improve the heat absorption efficiency. ( )
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For more information about the PPT courseware "Make a Solar Water Heater with Light", please click the "Make a Solar Water Heater with Light ppt" ppt tag.
"Make a Solar Water Heater" PPT download:
"Make a Solar Water Heater" PPT Download Part One Content: Knowledge Learning Solar water heater is an energy-saving device designed using a variety of scientific principles. Composition of solar water heater Solar water heater consists of: collector, thermal insulation water tank, connecting pipe...
"Make a Solar Water Heater" Light PPT:
"Make a Solar Water Heater" PPT Part One: How does a solar water heater work? A solar water heater is an energy-saving device designed using a variety of scientific principles. Report the data we collected on solar water heaters. Basics of solar water heaters...
"Making a Solar Water Heater" Light PPT Courseware 4:
"Make a Solar Water Heater" Light PPT Courseware 4 Solar water heater: It uses sunlight to heat water to achieve the purpose of benefiting mankind; it is an energy-saving device designed using a variety of scientific principles. 1. Structure of solar water heater Solar hot water...
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Update Time: 2024-07-04
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