TargetWoman - Portal for Women

Solar Water Heater Systems

TargetWoman is a portal dedicated to Women - Pages of lasting value on issues women care about.

Getting environmental friendly is the need of the day - tapping natural resources for vital needs can save on conventional energy. A solar water heater is one such boon for mankind. Heating up water for domestic use, factories and hospitals using a solar water heater is both environmental friendly and cost effective. Solar water heaters use solar energy to heat water and are also known as solar powered hot water heaters.


System design, geographic location, collector direction and collector size are the main factors that determine the amount of energy that can be provided for domestic hot water heating. Most solar water heater systems have back-up water heating such as electricity or gas.


Working of a solar water heater

Solar water heaters are made up of storage tanks and solar panels called solar collectors. A collector is fixed to the roof of a building or on a wall facing the sun; this will heat the water using solar energy. In few cases the collector may be free-standing. These collectors accumulate heat from the sun and use this heat to warm water which in turn is stored in a hot water cylinder.


The running fluid can be pumped through the heating system as in an active system or can be driven by normal convection as in a passive system. A solar water heater is also made up of a collector to collect solar energy and an insulated storage tank to store hot water.


Solar water heater using flat plate collectors: In this model the solar radiation is absorbed by glazed flat plate collectors. These collectors are made of a weatherproofed outer metallic box that is covered with a glass or plastic sheet on the top. Inside, the system water is carried through flat, dark metallic absorber sheets that are partly coated with built-in channels or riser tubes and are connected to copper pipes. The absorber absorbs the solar radiation and transmits the heat to the flowing water.


Solar water heater using evacuated tube collectors: In this model the collector is made of a pair of transparent borosilicate glass tubes. These glass tubes are evacuated so that they can provide insulation. Each of the tubes contains a glass outer tube and metal absorber tube attached to a fin. The coating on the fin absorbs solar energy while restraining heat loss. These types of collectors are used for commercial applications in the US.


Solar water heaters using integral collector-storage system: These heaters are also popular as ICS or batch systems. These heaters include one or more black tanks or tubes in a weatherproofed, glazed box. Initially cold water passes through the solar collector, which preheats the water. The water then flows into the standard backup water heater thus offering a dependable source of hot water. These heaters should be installed during mild-freeze climates only, as the outdoor pipes may possibly freeze in severe cold weather.


A simple water heating system would pump cold water to be heated into a collector, the heated water flows back to the collection tank. This type of collector can supply adequate hot water for the whole family.


Benefits of solar water heaters

Savings on fuel: Replacing an electric geyser at home with a 100 liters capacity solar water heater can save up to 1500 units of electricity per annum.


Environmental friendly: Replacing a domestic electric geyser with a 100 liters capacity solar water heater can reduce 1.5 tons of carbon dioxide emission into the atmosphere.


Solar Water Heater Systems

Solar water heaters can also be used for heating swimming pools, under floor heating, energy input for space heating or cooling etc. Solar heating systems provide up to 85% of the total domestic hot water requirement. Solar water heating systems are classified into two types:


Active: They have circulating pumps and controls. Active solar water heater systems are further classified into:


  • Direct circulation systems: Pumps circulate water through the collectors and into the house. They work perfectly in all climates and work well in climates where it seldom freezes.

  • Indirect circulation systems: Pumps circulate a non-freezing, heat-transfer fluid through the collectors and heat exchanger. This heats the water and then the water flows into the house. These systems are mainly used in climates that are prone to freezing temperatures.

Passive: They don't have circulating pumps and controls. Passive solar water heating systems are not as expensive as active systems. They are also not as efficient as active heater systems. Passive systems however last longer and are more reliable. Passive solar water heating systems are further classified into:


  • Integral collector-storage passive systems: These systems function at their best in areas where temperatures do not fall below the freezing temperature. They are also suitable for households that require hot water both during daytime and evening.
  • Thermosyphon systems: Water flows through the system when the warm water rises and the cooler water sinks. The collector in this system should be installed below the storage tank so that the warm water rises into the tank. These systems are reliable, but the roof on which the system is going to be installed should be designed with care so that it accommodates the heavy storage tank. These systems are more expensive when compared to the integral collector-storage passive systems.

A backup system is recommended for solar water heater systems during cloudy days and during increased demand. Almost all solar water heaters require a properly insulated storage tank. In one-tank systems, the back-up heater is integrated with the solar storage in one tank. In two-tank systems, the solar water heater preheats water before it enters the conventional water heater.


Solar water heater cost

A solar water heater can cost anything between US$ 1500 to US$ 3500. Solar water heaters made through DIY projects can cost you even lesser. According to the U.S. Department of Energy, solar water heaters will trim down the amount of energy required to make hot water by at least 50 to 80%.


Top of the Page: Solar Water Heater Systems
Solar Water Heater Systems
More on Home Improvement Home Improvement Home and Garden
Home Improvement Tips
Wood Furnace
Hardwood Floor
Bamboo Flooring
DIY Damp Proofing
Home Improvement Contractor
Handyman Services
House Painting Tip
Faux Painting
Exterior Wall Cladding
Elastomeric Paint
Waterproofing
Home Decor
Christmas Yard Decorations
Sliding French Door
Home Furnishing Idea
Vinyl Siding
Upgrade House Siding
Driveway Resurfacing
Closet Organizer
Linen Cabinet
Blown Glass Vase
Contemporary Credenza
Fish Tank Aquarium
Thanksgiving Cactus
Home Garden Design
Backyard Playhouse
Dining Room Design
Silk Floral Arrangement
Laundry Hamper
Antique Glassware
Fireplace Mantel
Indoor Fountain
Ceiling Texture
Recycling Facts


Cleaning
Seasonal Home Maintenance Seasonal Home Maintenance Checklist
Cleaning Bathroom Tile Grout
Spring Cleaning Tips
Stain Removal
Odor Eliminator
Kitchen Garbage Disposal
How to Declutter


Windows Sliding French Door French Window
Casement Window
Bay Window
Replace Home Window
Retractable Awning
Curtain Valance
Silk Curtains


Lightings
Wrought iron chandeliers
Hybrid Solar Lighting
Motion Sensor Outdoor Lighting
Lamp Shade
Home Lighting Fixture
Chandelier Lighting
Foyer Lighting
Recessed Lighting Fixtures


Home Security
Burglar Alarm System
Video Surveillance Camera
Web Security Cameras
Security cameras
CCTV Cameras
Driveway Alarm

Home Electronics Home Electronics Patio Radiant Heaters
Solar Water Heater Systems
Driveway Gates
Vacuum Cleaner Review
Dehumidifier
Clothes Dryer
Integrated Dishwasher
RFID Technology - RFID Application
Lower Energy Bills
Reduce Carbon Footprint
Electronic Pest Control

Home Appliance Maintenance Home Appliance Maintenance Washing Machine Maintenance
Ionizer Air Purifier
Vacuum Cleaner Maintenance
Appliance Maintenance - Refrigerator
Dishwasher Maintenance
Do it yourself Home Improvement

Kitchen Appliances
Budget Kitchen Upgrade
Food Steamer
Waffle Iron
Garment Steamer
Crepe Maker
Kitchen Blender
Meat Grinder
Juicer
Gas Grill
Barbecue Smoker

Kitchen Improvement Kitchen Improvement Types of Cutlery
New Kitchen Countertops
Kitchen Cabinet
Kitchen Chimney Hoods
Kitchen Pantry
Kitchen Knife
Metal Bread Box
Kitchen Canister
Kitchen Remodeling Idea
Kitchen Furniture
Kitchen Faucet
Kitchen Lighting Idea
Custom Kitchen Island
Ceramic Kitchen Sink
Kitchen Backsplash Tile
Crockery
Barbecue Grilling Tip
Stainless Steel Tableware

Bath
Bathroom Sink Vanity
Shower Enclosures Kits
Shower Massage Panel
Bath Safety for Seniors
Inground Swimming Pool
Swimming Pool Maintenance
Replacing Bathroom Fixtures
Remodel Bathroom
Bath Tub Restoration
Jacuzzi Tub

Bedding
Organic Mattress
Memory Foam Mattress
Water Bed Mattress
Childrens Bunk Beds
Adjustable Bed
Neck Pillow
Luxury Bed linen

Furnitures Furnitures Writing Desk
Bedroom Furniture
Furniture Restoration
Bar Stool
Antique Furniture
Bedside Table Design
Picnic Table
Storage Ottoman
Kitchen Buffet Furniture
Contemporary Furniture Guide
Rustic Furniture
Space Saving Furniture
Wood Furniture Care

Top of the Page: Solar Water Heater Systems