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Archive for the ‘home and improvement – energy efficiency’ Category

Picking Up A Water Heater According To Your Needs

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This guest post has been produced by Aaron from Phoenix Plumbers who also specializes in Phoenix Water Heater Repair and Phoenix Tankless Water Heater.

Selecting the right water heater for your home is not something you can do with a quick sweep of a heater catalogue, although a good number of us do like to try and wing it that way.  So many things have to be taken into consideration, including how much hot water you regularly need (important), how many water heaters you want (very important), and how much you can spend on the unit or units (very, very important).  Some people say finding exactly the right solution you want is never possible for any given need, but given the sheer range and diversity of water heaters on the market, it is safe to say you can get pretty close to your ideal heater with some scouting.

The first thing to decide should be your budget.  This means both the ceiling price you have set for the purchase itself and the ceiling operating cost you have decided for running the unit you have chosen.  Finding out the first figure is fairly easyit usually glares straight at you from the catalogues.  Finding the second figure is a little more complicated as you need to take into account several factors.

First, look at the Energy label and information on the unit.  Energy-efficient devices post high Energy Factors while less efficient ones post lower numbers.  Give a thought to the type of fuel used by the heater as well: some heaters operate on electricity, some on gas, some on oil, and even some on solar power.  Depending on the usual yearly consumption of hot water in your home and the availability of certain resources, one type of fuel may prove more expensive than others.

You have to decide too if you want a tankless water heater or one that has storage attached.  Both have pros and cons: tankless heaters are more energy-efficient and space-efficient, storage water heaters have stronger flow and higher capacity but are prone to standby energy loss.

There may be a few more things you want to look for in your water heater, but these are the basic pointers to finding one.  Remember to make a checklist of what you want and do not wantadding to that list whenever some fresh consideration strikes youso that your shopping is far easier.

Written by chamiers

September 10th, 2011 at 8:28 am

How to Build a Wind Turbine

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Quite a few persons are switching to alternative energy sources like wind turbines and solar panels to lessen electricity costs and air pollution. Wind turbines can be very expensive to purchase but if you are really interested you can build a wind turbine, here’s what you will require.

How To Build A Wind Turbine

Required Tools

Saw

Sander

Drill

Required Materials

Cement and sandbags

Plastic PVC pipes

Nuts and bolts

Sails/blades

A generator

Batteries and a Power Control System (PCS)

2×4 board

Straps

Heavy sheet aluminum

5 inch flat disc

Electrical wires

Instructions

Let us start with the sails/blades of the wind turbine; take the PVC pipes and cut them to create your sails/blades. The blades need to be shaped in a particular way to catch the wind as such follow a guide for cutting the blades like the one found on www.yourgreendream.com. Use the saw to cut the blades and then use the sander to level the edges of the blade to make them more efficient.

A hub is needed to join the blades so take the flat disc and drill holes through it. Then drill matching holes into the blades and use the nuts and bolts to connect the blades to the hub and lay them aside.

Next is the nacelle that holds the mechanical pieces of the wind turbine. For a generator you can make your own if you possess the knowledge to do so but an easier choice is just to purchase a permanent magnet DC motor and use that as the generator. You need a motor that has a low RPM but that will give a good amount of current thus assuming that your wind turbine is about 5 feet tall, the motor ought to be about 30 volts and be rated at about 325 RPM.

As soon as you possess a generator for your wind turbine you have to mount both the blades and the nacelle. For this take the 2×4 piece of board and the straps, and strap the motor to one side of the 2×4 board and use a piece of PVC pipe to work as a nacelle and protect the motor from the elements. Secure the heavy sheet aluminum to the opposite end of the 2×4 to function as a tail for the wind turbine. If necessary cut it to make it fit correctly. Lastly secure the blades to the motor and the functional section of the wind turbine is complete.

PVC or aluminum pipe is probably your best alternative for a tower. Whichever one you choose to use, dig a hole and cement the tower into the ground. The base of the windmill is now built around the tower to steady the tower; the base is just a layer of concrete laid around the pole. When it dries put sandbags around the pole to secure it additionally. You can moreover tie guy lines to the tower for increased stability. Cut a hole in the side of the pole close to the bottom for power lines to run through from the motor to the PCS.

The PCS is used to carry energy from the generator to the batteries for storage. While the PCS can be made it is better to obtain one from an Alternative Energy Store. The electrical wires have to be connected from the motor, down through the tower and out to the PCS, then more wires are required to join the PCS to the batteries. Make the necessary connections and the windmill is ready for use.

Tip

You can use 2 flat discs if you prefer, one in front and one behind the sails/blades for increased firmness.

Written by admin

May 26th, 2010 at 2:32 am