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Heat Recovery is the conservation of expensive thermal energy that otherwise go abegging in a system. No man made system that consumes energy is 100% efficient. The percentage of energy that has not been used for the benefit of the user is released to the environment. If this waste energy can be recovered the efficiency of the system can improve closer to 100%. (subject to of course the efficiency of the recovery system).

Types of Techniques

There are various techniques for Heat Recovery applicable to various processes and systems. But fundamentally it must be said almost all such techniques utilize either;

• Heat exchangers
• Energy(enthalpy) recovery wheels
• Direct application for beneficial use

or,

• Use in a secondary stage of a process

Heat Recovery with Heat exchangers

A heat exchanger is used to transfer thermal energy from one fluid (liquid or gas) to another. The waste heat in the fluid is recovered through conduction (physical contact via the conveying tubes).Some examples are the engine cooling systems (radiators), oil coolers, Space heating Radiators, Water cooled condensers (air-conditioning), Air to air heat recovery (flue vents), condensing boilers etc. Combined Heat Generators (CHPs) are made highly efficient due to the use of heat exchangers to recover the waste heat.

Energy (enthalpy) recovery wheels

The Energy /Enthalpy recovery ventilators utilize desiccant rotors to adsorb and regulate moisture in the fresh air or exhaust air (depending on whether the application is cooling or heating) while recovering the cooling or heating effect. In colder seasons you require moisture and heat in the space while in the hot seasons you have to get rid of it for your room comfort. An efficient domestic ventilation system which maintains good Indoor Air Quality ( IAQ ) either recovers moisture when it is most needed ( in winter) while expel while retaining the low temperature when it is least needed (in summer) all the while maintaining a fresh air supply. The recovered energy can be as high as 40 to 75% of that otherwise would have been expelled.

Direct Application

A good example would be the car heating systems where engine heat is utilized to warm the car interior.

Use in a secondary Stage of a process

There are many processes in which the primary stage liberates much energy which go a waste. A secondary stage uses this heat recovery to boost the process to a higher efficiency. This makes the residual matter also less.

A good example is the high efficiency pellet or wood chip boiler.

Make no mistake! Recovered energy is as good as saved money .By limiting the consumption of fuel heat recovery provides solutions to many global problems such as fuel shortages, green house gas emissions, recession and many others.

John Mahoney is a freelance author who writes about various technology
realated subjects. For more information about John visit his website
www.techstore.ie.

Article Source:http://www.articlesbase.com/home-improvement-articles/heat-recovery-to-the-rescue-in-hard-times-992740.html

The hot tubs are among the most wanted and the desirous housing amenities during these days, thus it should be great preserved and protected in order to uphold its effectiveness. The hot tub’s perfect temperature is actually the ideal temperature for the bacteria to develop. Thus, it is very essential to use the hot tub chemicals in order to preserve your hot tub and your personal health. The two hot tub chemicals that can be used in order to ward off the growth of bacteria are bromine and chlorine. These hot tub chemicals are easily available and very effective.

There are numerous hot tub supplies of finest quality in the market which can be bought very easily at the competitive prices. But before making any selection about best hot tub supplies, it is very essential to ensure that the hot tub supplies match the requirements of your hot tub because the tubs can be of diverse nature and the user’s needs. Thus, take a lot of time in order to consider the requirements and also consult a professional to know the right supplies and accessories for your hot tub.

The hot tub accessories differ in the usage, quality and the other specifications. You have to identify the best accessories for your hot tub and get it installed. Although, hot tubs are great and very relaxing, but you can enhance this experience even more by choosing the best accessories for your tubs. Some of the finest accessories are blankets, cover lift and pre-filter. These are some of the best accessories which make your experience amazing.

Arctic Spas Cape Cod is one of the premiere sources for the finest hot tub accessories and hot tubs. The hot tubs which are built by Arctic Spas perform afar your prospect. It is the best and most reliable source for hot tub supplies and hot tub chemicals.

Tod Martin is an experienced on the publication of hot tub accessories and hot tub supplies. He has codified lots of articles on hot tubs and Hot Tub Chemicals. For more info visit the website.

Article Source:http://www.articlesbase.com/home-improvement-articles/hot-tub-basics-992746.html