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posted by admin, October 21, 2011 A water heater is designed to provide comfort temperature of water as fast as possible. At the same time the water heater has to be practical and safe to the uttermost. It is a pity, but most electric water heaters, working on the principle of direct heating, do not meet these requirements. They feature high demand and low efficiency. Heating with help of the heat-exchange unit is the most acceptable alternative. Such type of the water heater is connected to the central heating system and can maintain heat at the fixed level. Its key element is a coil pipe connected to the central heat supply system. Heat-carrying agent is delivered through it with help of the pump. In turn, a thermostat controls temperature. As soon as water temperature has become optimal, circulation of the heat-carrying agent is stopped and restarted only when temperature begins to decrease. The heat-exchange unit is easy to install. Its maintenance costs less and does not require regular equipment examination. Finally, an induction electric boiler can also be used to heat water in the pool. Read More posted by admin, August 10, 2011 Today a water heater is a sign of luxury no more. Even more, use of the water heater is necessity, because it helps save on bills and have hot water 24 hours a day. Someone prefers a storage tank water heater, someone installs a direct-flow model. Here we are going to talk a direct-flow model. This water heater is much-advertized as faultless and ideal. Of course, it has a lot of benefits, but it also has drawbacks. Comparing with the storage tank model, its main benefit is unlimited amount of hot water. No matter how long the faucet is turned on, you will not have to rinse off shampoo with cold water. In the second place, it is rather small and does not take so much space as the tank storage model. But this water heater consumes a lot of energy and temperature of water depends on a number of faucets turned on together. It means, if you are taking a shower while your wife is washing up at the kitchen, you have all chances to take a cold shower. Though, if capacity of the direct-flow water heater is 8 kW and more you may not have this problem. But it also means you will need a three-phase power network. Moreover, it is allowed using maximum 6 kW water heaters in some new buildings. This problem may be solved using compact water heaters with 1.5-8 kW power demand range. They are divided into free-flow and pressure water heaters. The first water heater has a shower head. As for the second model, it is turned on and off automatically. Read More posted by admin, July 4, 2011 Use of the water heater is an excellent way out when there is no centralized hot water supply system. The most popular water heater is storage tank one. Direct-flow water heater takes the second place. Storage tank water heater can boast of low electricity consumption. A conventional socket is required to turn it on. Hot water can be used by a few water-supply points in parallel. While one member of the family is taking a shower, the other can wash up. This water heater can be installed both in the kitchen and the bathroom. Water temperature is regulated by the mixer unit and it does not influence pressure inside the water heater. Choosing the boiler the buyer should take into consideration the following factors: size of the storage tank and number of water feed points it will be adjusted to. The large size of the heater, the heavier it is and more energy is consumed by it. Before buying the boiler it is recommended to calculate the total water consumption and decide what size is to choose and whether it is beneficial to buy the boiler or not. For example, one person uses about 12 gallons of water when taking a shower. About 4 gallons are used to wash dishes. If there are two members in the family, it is necessary to add 12 to 4 and multiply the result by two. So, the family of two needs the 32 gallon boiler at least. Let us not forget about washing, bath, shaving and dishwashers which need more water than usual dish washing. 20 gallon reservoirs are the smallest among boilers available today. The largest reservoir is 80 gallons. Read More posted by admin, May 27, 2011 A water heater can be with a storage tank or without it. Here we are going to talk about the first type of the water heater. As a rule, a gas tank-style water heater consists of the hot water outlet, pressure relief valve, vent pipe, cold water inlet, flue tube, anode rode, insulation, gas valve, thermostat, gas burner and combustion air openings. An average service life of such water heater ranges from 13 to 15 years. The tank-style water heater is not so energy-saving as a tankless model, but the water heater equipped with the storage tank has indisputable benefits. Apart from gas water heaters, there are electric models and those ones using propane and oil as fuel. If a family of two is going to buy such boiler, the recommended minimum size of the storage tank is 40 gallons. For the larger family it should be 50 - 65 gallons or more. As for the right temperature, according to experts of OSHA it should be 140 degrees Fahrenheit to prevent breeding of bacteria in water inside the tank. It is one more reason to keep the boiler turned on all the time. The energy-efficient gas water heater is usually equipped with condensing heat exchangers, electronic ignition, powered exhaust, improved control of flue damper and burners of top-quality. Read More posted by admin, May 26, 2011 Before deciding what water heater is better to choose, let us compare the most common models of water heaters. Moreover, choosing the water heater we should take into account the following criteria. Apart from the cost we should think if we want the water heater with a storage tank or without it. There are direct-flow water heaters without a storage tank, heat pump and solar water heaters, indirect hot-water generators. The water heaters with the storage tank are rather bulky and are not a good alternative for a small bathroom, but they are much cheaper then their tankless rivals. In turn, electric models of water heaters with the storage tank cost less than gas models. In fact, a type of fuel is of a great importance. This is the fuel type which influences energy efficiency, cost and size of the water heater. Gas, electricity, solar energy, propane are the most common types of fuel. What fuel type is the most cost-saving? As a rule, it is electricity. This fact explains why electric water heaters are more popular. The more so it does not require regular ventilation unlike the gas water heater. Though, in some areas gas rates are lower and it should be said water is heated faster by gas models. If you have become interested in electric water heaters, you may like the heat pump models. As for gas water heaters, gas condensing models are very efficient. They provide 11-19 liters of hot water per minute. And finally, the most energy-saving type of the water heater is solar one. Read More |
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