Ductless Heating Cooling Systems Reviews - Mini Split System.

 

 

Ductless Heating Cooling Systems Reviews. The Convenience of Window Air Conditioning Units.

Are you looking for the convenience of window air conditioning units without the hassle of duct work installation? For those who live in an existing home, retrofitting the home with central air conditioning can be an expensive and messy proposition. Manufacturers realized this and came up with a unique solution to the problem. The invention of the ductless mini split air conditioning system was the result. These units are primarily used for cooling a home although some are able to provide heat also.

 

With a ductless mini split system, there is no need for a single refrigerant coil/air handler and central duct work. This system consists of an outdoor unit along with refrigerant lines. These lines are used to pipe the refrigerant to individual rooms or zones. Cool air is then blown into the room or zone through the use of a fan in the evaporator units. Wiring is run along with the refrigerant lines to make installation easier.

Ductless Mini Split. Installation Can be Done in Less than a Day.

Installation can be done in less than a day by two technicians if you opt to go with one unit and a maximum of three zones. The indoor units which make up a good portion of your system are usually between six and eight inches deep, with the standard being seven inches. These units can be mounted flush on the ceiling or wall. You may also choose to have the units recessed in a drop ceiling if it is available. Many decide to upgrade to the remote control option as this makes temperature adjustments easier.

Ductless Heat Pump. Significant Energy Savings.

Ductless mini split systems have many advantages over both conventional cooling systems and window air conditioning units. When you install a ductless system in your home, you won't have distribution losses associated with conventional systems. These can be up to 25% less with the ductless version. The energy loss is reduced as ducts can be leaky. With no duct work to worry about, this is not the case. You are also able to control each zone separately. If you only use part of your home most of the time, you can opt to not cool the areas which are uninhabited. This will lead to significant energy savings. In addition, intruders can easily breach a window air conditioning unit. With ductless systems, the pipes are very small and won't allow for unwanted entry. Although you will pay more at the time of purchase, you can quickly recoup your saving when installing a mini split system. This is definitely a cooling method you want to check out.

Ductless Heating Cooling. FEATURES:

Energy-Savings Operation, Quiet Operation, Quick Cooling: Strong emission of cool air reduces the ambient temperature quickly, Intelligent Logic Auto Control: Senses various interior and exterior conditions and adjust to your preference, Wireless Remote Control, Dry Mode, 3 Fan Speeds and Automatic Fan Operation, Air Sweep Control, Louver Control, 24-hour ON/OFF Program Timer, Night Setback Mode, Automatic Restart Function after Power Failure, Anti-mold Filter, Have Questions or Need help before purchase? , Our experienced staff can help you make the right decision that can not only improve your heating and cooling but also help you save money on energy bills.

 

Install Ductless Mini Split Air - Refrigerant Gas!

Install Ductless Mini Split Air. The Chemical Reactions of Refrigerant Gas. 

A refrigerant is a chemical used in cooling systems for mechanical devices such as refrigerators, walk-in freezers, or air conditioners. Most refrigeration units depend on the chemical reactions of refrigerant gas to remove heat from an enclosed area. There are actually numerous gases that have been used as refrigerants. Early refrigerants were highly toxic and dangerous chemicals. The modern gases that replaced them are safer, but many can have a damaging effect on the global environment.

Ductless Mini Split Air Conditioner. A Mechanical Refrigeration System.

Artificial refrigeration using mechanical and chemical processes was developed in the 19th century. Chemists had long known that some chemical reactions absorb or divert heat, lowering the temperature in a given area. The food and beverage industry of the time needed an alternative to costly and inefficient refrigeration methods involving the transport and storage of ice. Inventors such as American Thaddeus Lowe created complex systems using chemicals to draw heat from enclosed areas, creating a refrigerated compartment. Most of these systems involved some form of refrigerant gas.

 

A mechanical refrigeration system depends on storing a certain quantity of refrigerant gas or gases. The device creates controlled chemical reactions by forcing the gas to change state or combining it with other chemicals, drawing heat from the refrigerated compartment. Early commercial and home refrigeration units used gases such as ammonia and methyl chloride. These gases are highly toxic and could cause injuries if they escaped containment or required maintenance. For this reason, most early refrigerant gases are no longer in use.

Ductless Mini Split Air Conditioner Reviews. Chlorofluorocarbons.

By the 1950s, home refrigeration units were common in most households in developed countries. The manufacturers of these devices replaced toxic refrigerant gases with synthetic refrigerants called chlorofluorocarbons. These were safer to handle and store, but soon scientists discovered they had their own problems. In the 1970s, studies revealed that chlorofluorocarbons used in refrigeration units and other devices contribute to ozone depletion. Ozone depletion, which can increase the damaging health effects of solar radiation, was one of the first environmental crises to be widely understood, and international conventions soon banned chlorofluorocarbons. 

Ductless Mini Split Air Conditioner Installation. Safe Alternative. 

Continuing advances in refrigeration technology have produced safe alternative refrigerants and efficient machines that require a fraction of the refrigerant chemicals used by older units. The older refrigerants are still required, however, for older devices that are still in use, such as in cars or industrial freezers. These cannot be converted to modern refrigerants without prohibitive expense. Government bodies such as the United States Environmental Protection Agency have strict regulations on the use and disposal of refrigerants. Individuals requiring the maintenance of refrigeration units should always consult with a qualified technician.

 

Aircon Mini Split Review - Device Air Registers In and Out Room!

Aircon Mini Split Review. Device to Transfer Air In or Out of a Room.

An air register is a device used to transfer air in or out of a room. The registers serve as part of the building's heating, ventilation, and air conditioning (HVAC) system, and can generally be found in any occupied room within the building. As the furnace or air conditioner heats or cools air, a blower directs this air into a series of supplies ducts. A air register sits at the end of each of these supply ducts, and serves as a transition between the duct and the room. A second set of air registers sits at the head of each return duct, which directs exhaust air from each room back to the unit.

Mini Split Air Conditioner. Installed.

Depending on the design of the room and the configuration of the HVAC system, an air register may be installed in the ceiling, floor, or wall. Some fit within soffits or bulkheads near the ceiling, while others are designed for baseboard installation. In many structures, installers place air registers just below the windows in order to minimize condensation and maximize comfort for occupants. The placement of an air register can also be influenced by local building codes or existing construction conditions.

Air Conditioner Reviews 2012. Models.

Each air register features some form of vents or openings so air can pass through. The size and configuration of these openings determines air flow speed and volume. Older air registers consisted of flat metal panels with holes stamped into the face. Modern versions generally contain directional vents that can be adjusted to redirect air flow as needed. They may also include angled fins or blades so that air flows into the room at an angle, rather than in an uncontrolled manner.

 

Manufacturers produce air registers from a variety of materials, including metal and thermoplastics. Installers often select registers that match the surrounding room where they will be installed. Some can be painted to match walls or ceilings, while others feature a polished or brushed metal finish. When choosing pre-finished models, buyers should look for finishes that match other hardware within the space.

Kingersons. Clean and Maintenane.

The performance of an air register may be impaired by dirt and dust buildup over time. To keep the HVAC system operating as intended, homeowners must clean and maintain these registers often to remove dirt and debris. If an air register gets damaged or badly clogged, it's often easier to replace the unit instead of trying to repair it. Most standard air registers are relatively cheap, and require little effort to remove and install.

Senville Ductless Cooling - The Air Conditioning Coil System!

 

 

 

Senville Ductless Cooling. HVAC Coils in a Typical System. 

A heating, ventilation and air conditioning (HVAC) coil is part of an air conditioning and heating system. There are actually two HVAC coils in a typical system. There is a condenser coil in the external air conditioning condenser and an evaporator coil in the indoor unit. The coils are what increase or decrease the temperature and pressure of the coolant gas or liquid before passing it to another section of the HVAC system.

Senville Ductless Reviews. The HVAC System.

To understand how the coils work, one first must understand how an HVAC system works. In simplest terms, the HVAC system pulls hot air into the system, cools it, then distributes it throughout the building. In winter, the system pulls cold air in, extracts the heat from it and passes that heated air through the ductwork in the building. HVAC coils play an important role in this process.

Ductless Cooling and Heating. The Compressor.

The compressor in the exterior unit is a pump that pulls hot, low pressure refrigerant or coolant gas from inside a building and will convert it into hot, compressed gas. That hotter gas is forced over the exterior coil and gets cooled off as the hot air from inside the building is blown to the exterior. The loss of heat from the coolant, however, turns the gas into a liquid form that is still very hot and pressurized.

 

The liquid flows into the evaporator coil that is found in the inside HVAC unit. As the liquid enters the evaporator HVAC coil, it is able to expand and cool. It is cooler than the surrounding air, so it absorbs heat out of the ductwork that is part of the HVAC system. This leaves cooler air in the ducts to be distributed throughout the building. As the cool air is dispersed through the duct system, the cooler, low-pressure gas recycles back to the exterior compressor HVAC coil to start the cooling cycle again.

Ductless Cooling Systems. The Opposite Way.

In winter, an HVAC coil works in the opposite way. The heat pump pulls air in from the outside and runs the air over the evaporator coil. The colder air is warmed by the evaporator coil and then pumped through the ductwork to heat the building. Even though the air outside a building might be freezing cold, the HVAC system is able to pull some heat from it. In fact, an HVAC coil can pull heat from air that is well below freezing.

Mitsubishi Mini Splits - A Central Heating System!

Mitsubishi Mini Splits. Central Heating.

A central heating system provides warmth to the whole interior of a building (or portion of a building) from one point to multiple rooms. When combined with other systems in order to control the building climate, the whole system may be an HVAC (heating, ventilation and air conditioning) system.

Mitsubishi Split System Reviews. Central Heating Differs from Local Heating.

Central heating differs from local heating in that the heat generation occurs in one place, such as a furnace room in a house or a mechanical room in a large building (though not necessarily at the "central" geometric point). The most common method of heat generation involves the combustion of fossil fuel in a furnace or boiler. The resultant heat then gets distributed: typically by forced-air through ductwork, by water circulating through pipes, or by steam fed through pipes. Increasingly, buildings utilize solar-powered heat sources, in which case the distribution system normally uses water circulation.

Mr Slim Air Conditioner. The Overall Efficiency will be Less.

In much of the temperate climate zone, most new housing has come with central heating installed since the Second World War, at least. Such areas normally use gas heaters, district heating, or oil-fired system, often using forced-air systems. Steam-heating systems, fired by coal, oil or gas, are also used, primarily for larger buildings. Electrical heating systems occur less commonly and are practical only with low-cost electricity or when ground source heat pumps are used. Considering the combined system of central generating plant and electric resistance heating, the overall efficiency will be less than for direct use of fossil fuel for space heating.

Lg Mini Splits. Heat Pumps.

In mild climates a heat pump can be used to air condition the building during hot weather, and to warm the building using heat extracted from outdoor air in cold weather. Air-source heat pumps are generally uneconomic for outdoor temperatures much below freezing. In colder climates, geothermal heat pumps can be used to extract heat from the ground. For economy, these systems are designed for average low winter temperatures and use supplemental heating for extreme low temperature conditions. 

 

The advantage of the heat pump is that it reduces the purchased energy required for building heating; often geothermal source systems also supply domestic hot water. Even in places where fossil fuels provide most electricity, a geothermal system may offset greenhouse gas production since most of the energy furnished for heating is supplied from the environment, with only 15–30% purchased.

 

Mini Splits Mitsubishi. Use and Benefits of Purifiers.

Mini Splits Mitsubishi. Air Purifier.

An air purifier is a device which removes contaminants from the air. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke. Commercial grade air purifiers are manufactured as either small stand-alone units or larger units that can be affixed to an air handler unit (AHU) or to an HVAC unit found in the medical, industrial, and commercial industries.

Mini Split Heat and Air. Benefits of Purifiers.

Dust, pollen, pet dander, mold spores, and dust mite feces can act as allergens, triggering allergies in sensitive people. Smoke particles and volatile organic compounds (VOCs) can pose a risk to health. Exposure to various components such as VOCs increases the likelihood of experiencing symptoms of sick building syndrome. Additionally, with the advancement in technology[vague], air purifiers are becoming increasingly capable of capturing a greater number of bacterial, virus, and DNA damaging particulates. Air purifiers are used to reduce the concentration of these airborne contaminants and can be useful for people who suffer from allergies and asthma.

Mitsubishi HVAC Mini Split. Purifying Techniques - UVGI.

Several different processes of varying effectiveness can be used to purify air. Ultraviolet germicidal irradiation - UVGI can be used to sterilize air that passes UV lamps via forced air. Air purification UVGI systems can be freestanding units with shielded UV lamps that use a fan to force air past the UV light. Other systems are installed in forced air systems so that the circulation for the premises moves micro-organisms past the lamps. Key to this form of sterilization is placement of the UV lamps and a good filtration system to remove the dead micro-organisms. For example, forced air systems by design impede line-of-sight, thus creating areas of the environment that will be shaded from the UV light. However, a UV lamp placed at the coils and drainpan of cooling system will keep micro-organisms from forming in these naturally damp places. The most effective method for treating the air rather than the coils is in-line duct systems, these systems are placed in the center of the duct and parallel to the air flow.

Mitsubishi Ductless Air Conditioning. Purifying Techniques - Filter.

Based purification traps airborne particles by size exclusion. Air is forced through a filter and particles are physically captured by the filter. HEPA filters remove at most 99.97% of 0.3-micrometer particles, and are usually more effective for particles which are larger. HEPA purifiers which filter all the air going into a clean room must be arranged so that no air bypasses the HEPA filter. In dusty environments, a HEPA filter may follow an easily cleaned conventional filter (prefilter) which removes coarser impurities so that the HEPA filter needs cleaning or replacing less frequently. HEPA filters do not generate ozone or harmful byproducts. Filter for HVAC at MERV 14 or above are rated to remove airborne particles of 0.3 micrometers or larger. 

 

Split AC System - Ice Storage Air Conditioning.

Split AC System. Air Conditioning.

Thermal Energy Storage using ice is practical because of the large heat of fusion of water. One metric ton of water, one cubic metre, can store 334 million joules (MJ) or 317,000 BTUs (93kWh or 26.4 ton-hours). In fact, ice was originally transported from mountains to cities for use as a coolant, and the original definition of a "ton" of cooling capacity (heat flow) was the heat to melt one ton of ice every 24 hours. This is the heat flow one would expect in a 3,000-square-foot (280 m2) house in Boston in the summer. This definition has since been replaced by less archaic units: one ton HVAC capacity = 12,000 BTU/hour. Either way, an agreeably small storage facility can hold enough ice to cool a large building for a day or a week, whether that ice is produced by anhydrous ammonia chillers or hauled in by horse-drawn carts.

 

The most widely used form of this technology is in large building or campus-wide air conditioning or chilled water systems. Air conditioning systems, especially in commercial buildings, are the most significant contributors to the peak electrical loads seen on hot summer days. In this application a relatively standard chiller is run at night to produce a pile of ice. Water is circulated through the pile during the day to produce chilled water that would normally be the daytime output of the chillers.

 

A partial storage system minimizes capital investment by running the chillers 24 hours a day. At night they produce ice for storage, and during the day they chill water for the air conditioning system, their production augmented by water circulating through the melting ice. Such a system usually runs in ice-making mode for 16 to 18 hours a day, and in ice-melting mode for 6 hours a day. Capital expenditures are minimized because the chillers can be just 40 to 50% of the size needed for a conventional design. Ice storage sufficient for storing half a day's rejected heat will do.

Split AC System Reviews. Minimizes the Cost of Energy.

A full storage system minimizes the cost of energy to run the system by shutting off the chillers entirely during peak load hours. Such a system requires chillers somewhat larger than a partial storage system, and a larger ice storage system, so that the capital cost is higher. Ice storage systems are inexpensive enough that full storage systems are often competitive with conventional air conditioning designs.

 

The efficiency of air conditioning chillers is measured by their coefficient of performance (COP). In theory, thermal storage systems could make chillers more efficient because heat is discharged into colder nighttime air rather than warmer daytime air. In practice, this advantage is overcome by the heat losses while making and melting the ice.

 

There are some advantages to society from air conditioning thermal storage. The fuel used at night to produce electricity is a domestic resource in most countries, so that less imported fuel is used. This process also has been shown in studies to significantly reduce the emissions associated with producing the power for air conditioners, since inefficient "peaker" plants are replaced by low emission base load facilities in the evening. The plants that produce this power are often more efficient than the gas turbines that provide peaking power during the day. And because the load factor on the plants is higher, fewer plants are needed to service the load.

Portable AC System. Condensing Medium for the Refrigerant. 

A new twist on this technology uses ice as a condensing medium for the refrigerant. In this case, regular refrigerant is pumped to coils where it is used. Instead of needing a compressor to convert it back in to a liquid however, the low temperature of the ice is used to chill the refrigerant back in to a liquid. This type of system allows existing refrigerant based HVAC equipment to be converted to Thermal Energy Storage systems, something that could not previously be easily done with chill water technology. In addition, unlike water-cooled chill water systems that do not experience a tremendous difference in efficiency from day to night, this new class of equipment typically displaces daytime operation of air-cooled condensing units. In areas where there is a significant difference between peak daytime temperatures and off peak temperatures, this type of unit is typically more energy efficient than the equipment it is replacing.

Mini Split AC System. Combustion gas turbine air inlet cooling.

Thermal energy storage is also used for combustion gas turbine air inlet cooling. Instead of shifting electrical demand to the night, this technique shifts generation capacity to the day. To generate the ice at night, the turbine is often mechanically connected to the compressor of a large chiller. During peak daytime loads, water is circulated between the ice pile and a heat exchanger in front of the turbine air intake, cooling the intake air to near freezing temperatures. Because the air is colder, the turbine can compress more air with a given amount of compressor power. Typically, both the generated electrical power and turbine efficiency rise when the inlet cooling system is activated. This system is similar to the compressed air energy storage system.