Thursday, April 11, 2013

2 Ton Mini Split - Renewable Heat Pumps Systems!!!


2 Ton Mini Split. How do heat pumps work?




A heat pump is an environmental energy technology that extracts heat from low temperature sources (air, water, ground), upgrades it to a higher temperature and releases it where it is required for space and water heating. Heat pumps can also be operated in a reverse mode for cooling purposes. The heat pumping cycle can be divided in three steps:



Inverter Mini Split - Step 1.The Working Fluid.



A fluid with a boiling point lower than the heat source temperature serves as a medium for heat transport. It is called the working fluid or refrigerant. As the working fluid extracts the heat from the source through a heat exchanger, its temperature rises and it evaporates. 


2 Ton Mini Split Reviews. Step 2. Compressor.



Then a compressor compresses the evaporated fluid, consequently, the pressure and the temperature of the vapour increase. When pumping up a bicycle tyre, you can also observe this phenomenon. The lower side of the pump – where the pressure is highest – is getting very hot.


 




Finally, heat is being transferred from the evaporated fluid to the heat distribution fluid (water or air) in the condenser. As it releases its heat, the working fluid temperature decreases to such a degree that it condenses. After passing through the expansion valve, the fluid regains its initial liquid, low-temperature and low-pressure state. It then flows back to the evaporator where the process starts all over again.

Wednesday, April 10, 2013

Trane Mini Splits | Low Temperature Heating Systems.


Trane Mini Splits. Convection Radiators.




As mentioned before, heat pumps work best when the temperature of the heat released is low. Floor, wall and low temperature radiator heating systems are therefore particularly suited for heat pumps. Floor and wall systems are more and more popular for reasons of comfort and health, as well as aesthetic reasons


 


Convection radiators create higher temperatures in the ceiling and cooler temperature at floor level. This will cause convection drafts and air circulation which have a cooling effect on the occupants and carry dust particles. This can result in respiratory problems and dirt on walls and furniture. With underfloor heating,


floor to ceiling temperature and humidity levels remain more constant, producing a more comfortable environment for occupants.



ŠYork Mini Splits. Modern Radiators.




In retrofit situations, underfloor heating might not be possible. Different options can then be considered: Šmodern radiators can be used to distribute heat at a low temperature. They are larger than conventional radiators to allow for lower heating 


temperatures with larger convection areas; hydronic convectors assisted with a fan can be operated at low water  temperature with a heat pump. They are typically 20% to 40% the size of an equivalent output radiator, and are equipped with advanced control; existing radiators can be operated at lower temperature than usual to provide a base  heating load with the heat pump. The heat pump is backed-up by the existing boiler or an  immersion heater when higher temperatures are required. 



Trane Home. COP.





The table below shows how the COP of a water/brine-to-water heat pump varies with the temperature of the distribution system: Air heating may also be used with heat pumps in modern houses in which the heating requirement is limited. It has the advantage of working at a low temperature and of being able to react quickly to temperature fluctuations in the house. An air-heating appliance can also be used to purify and refresh the air to create an optimum indoor climate. 


 


Heat distribution system supply/return COP1 temperature, Conventional radiators 140/122 °F 2.5, Floor or wall heating 95/86°F 4.0, Modern radiators 113/95°F 3.5,


Hydronic convectors 118.40/100.40 °F 3.5.




Trane Air Conditioning. Storage Systems.





Conventional heating systems (gas or oil boilers) are generally sized to meet peak demands (only a few days if not hours per year). Heat pumps are not suitable for such an approach as the investment required would be too high. To fit this economically, we therefore aim at a system with a heat pump as small as possible, working for as many hours as possible. A certain amount of heat or cold can be stored in a buffer at a certain time to meet peaks in demand later on. 


 


Temporary storage can take place in the mass of the building. Heat produced by the heat pump can be stored at night in the mass of the floor slab through an underfloor heating system and released slowly during the day. The mass of walls insulated externally, or partition walls, can be used similarly. This principle can be applied to avail of the low cost electricity at night to store most of the heat (60%) that will


be used during the next day.


 





    


Wall Split Air Conditioner Senville - Heating and AC Ideal.


Wall Split Air Conditioner Senville. Do you need advice?



Whether choosing heating and air conditioning systems for the home or the workplace, there are several factors that should be considered before settling on any one system. Ideally, the unit selected will be energy efficient, powerful enough to maintain a comfortable temperature within the space, and also be affordable. Here are some tips on how to find the right heating and air conditioning system for your situation.


Portable Air Conditioner. Perfect Distribution.



There are a number of different types of heating and air conditioning systems on the market today. Some of the systems are hybrids that use a combination of natural gas and electricity to function. With these types of units, the air conditioning units built into the system work off electricity, while the heating components utilize natural gas to warm air before it is distributed through the space. Sensors help to trigger the proper function when the indoor temperature drops below the temperature setting indicated by the thermostat controls. While some claim that hybrid systems are more energy efficient, an electrical central air conditioning system may be just as efficient, depending on the climate and the size of the space that the system must heat and cool.


Window Air Conditioner. Consider Various Options.



Other features of various heating and air conditioning systems must also be considered. There are ductless air conditioning solutions that may work very well in some residential as well as commercial settings. A split air conditioning system may also be a good solution. Having some idea of the differences between the different systems and how each one would work in your space will make it easier to eliminate consideration of some options and focus on those that are more likely to provide the proper level of service.


Mini Split Air Conditioner. Professional Consultations.



Along with the general design and energy efficient qualities of a given heating and air conditioning system, it is also important to purchase a system that will adequately heat and cool the space without placing a great deal of stress on the equipment. Trying to save money by buying a system that is too small will prove unprofitable in the long run. The system will have to work harder in an attempt to keep the space comfortable, wearing down components more quickly and also using excessive amounts of energy. If you are not sure how large the system must be in order to provide adequate service, check with a professional before considering any systems of any size.

Mitsubishi Ductless Split Aircon - What Types of Heat there are?


Mitsubishi Ductless Split Aircon. Forced Air.



When building a new home, there are many different types of heating systems to consider. Some types of heating systems are forced air, radiant heat, hydronic, steam radiant, and geothermal. Each type of heat should be considered for its effectiveness in meeting the budget and heating and cooling needs for the home.


 


The forced air heating system is most commonly seen in residential structures. It works by heating air in a furnace and then forcing the air out into various areas of the home through installed ductwork and vents. It is also commonly known as a central heating system because it comes from a central point in the home, where it can be filtered, humidified, or dehumidified. The air can be heated with various methods, including electricity, natural gas, propane, or oil. Since this system can be used to address both heating and cooling, the system is convenient for many people.


Ductless Split System. Radiant Heat.



The ductwork required to use this system takes space in walls, so it may be difficult to install this system in an older home, and can require extra planning with new construction. The furnace system used may be noisy and heard throughout the home. This system can also move allergens throughout the house as the air circulates. The air filtration systems will require regular maintenance to retain optimal function. This system can expensive due to maintenance costs.


Mitsubishi Ductless Air Conditioning. Steam Radiant.



The radiant heat heating system is often praised for its ability to produce natural and comfortable heat in a home. In this system, heat is commonly delivered through a system of hot water tubes underneath the floor, although these tubes can also be installed in ceiling panels. The hot water is heated using a boiler which is usually powered by oil, natural gas, propane, or electricity. A heating stove may also be used to heat the water, powered by coal or wood.


 


Radiant heat is often slow to heat a room because the water must first be heated and circulated through the pipes. It can be expensive to install and maintain because of the difficulty involved in getting to the tubing systems if a problem occurs with the system. Air conditioning is not available with this method, as it requires a completely separate system of ductwork.


Mitsubishi Ductless Air Conditioner. Geothermal.



Hydronic heat is also known as a hot water baseboard system. Much like radiant heat systems, a boiler heats hot water, which then is circulated through tubes; for hydronic heat, these tubes are located in baseboard heating units attached to the walls in each room of the home. These systems are usually quiet, energy efficient, and may be fueled by electricity, oil, or natural gas. Temperature can usually be controlled separately in each room. Baseboard units should not be blocked by curtains or furniture, making them inconvenient for some users, and as with radiant heat, hydronic systems can be slow to warm a room and require a separate cooling system.

Mini Split Air Condition - Types of Heat Pump Systems.


Mini Split Air Condition. Types of Heat Pump Systems.



There are different types of heat pump systems to choose from. Which one is right for you depends on the size of the room or house you want to heat or cool, the location of your home and your specific needs. Below is a brief description of the different types of heat pump systems.



Lg Mini Split Air Conditioner. Single Split Heat Pump System.



The single split system is ideal in one room or area like an open plan living area or lounge. The split system heat pump has a single outdoor compressor unit connected to one indoor unit. The indoor unit is either wall or ceiling mounted, or it may be a floor standing model. This is a single room solution and it cannot control the temperature of more than one room.



Mini Split Air Conditioner Reviews. Multi Split Heat Pump System.




The multi split system has the exterior unit connected to more than one indoor unit. This system is used when there is a need for heating in more than one room.



Mitsubishi Mini Split Air Conditioner. Ducted Heat Pump System.




A ducted system is a larger system, designed to heat or cool a whole house. The ducted heat pump system has one exterior unit and the indoor unit is usually in the ceiling or under the floor. It distributes warm or cold air through ductwork and small vents located throughout the home. This is a whole house solution.


 


Install Sanyo Minisplit - Coefficient of Performance (COP).


Install Sanyo Minisplit. Measure the Output of Heat Pumps.



The coefficient of performance refers to the change in ratio in the heat released at an output compared to the work that must be performed in order to release that heat. This measurement is typically used to measure the output of heat pumps, however, it can be used for other measurements as well. The coefficient of performance is sometimes abbreviated COP or CP. Various equations are used to determine the COP in different applications.



Lg Mini Split. Determining the Coefficient of Performance.



When deriving or determining the coefficient of performance, the first rule of thermodynamics is important to remember. This rule states that energy can be changed, but it cannot be destroyed nor can it be created. As a result of this rule, the equations used to determine the coefficient of performance generally begin by considering the heat that is taken in from the air by the reservoir for cold heat and the heat that is released from the reservoir for hot air.



Panasonic Mini Split. Heating and Cooling Reservoirs.



To determine the coefficient of performance, the absolute temperatures of the heating and cooling reservoirs must also be considered in some COP equations. This changes the equation so that the absolute temperature of the hot air reservoir and the absolute temperature of the cold air reservoir are considered. Taking these absolute temperatures into consideration and using the Kelvin scale, the answer that is computed will determine the maximum theoretical efficiency for units according to the first rule of thermodynamics. This equation is commonly used to determine the coefficient of performance for refrigerators and air conditioners.



Sanyo Ductless Mini Split. Process of Determining the COP.



The process of determining the COP is important because a comparison of coefficients of performance can be used to determine the amount of energy that could be saved by using one type of system versus another. For instance, if an electric heat pump is running at a COP of 4.5, this means that it provides 4.5 units of heat, and for each unit of heat, one unit of energy is consumed. If the user knows the price per kilowatt of energy used, then he can make an informed decision as to the type of system that may be better suited financially for his needs or as to which of two systems is a better buy. For example, if an electric heat pump will cost more because of the price of electricity versus the price of natural gas, then it would be in the user's best financial interest to select a system that runs on natural gas instead.


Mini Split Airconditioners - Understanding Defrost Cycle!


Mini Split Airconditioners. Defrost Cycle.



During winter months many heat pumps will need to go through a “defrost” cycle during operation. Often this has not been explained well before installation, which leads to a lot of confusion about why the heat pump is not working. This document is provided to help users understand the defrosting cycle and address any concerns.


Mini Split Airconditioners Reviews. What is a “defrost cycle”?




In heating mode a heat pump extracts heat from the outside air and transfers it inside your premises to warm it. When the ambient temperature outside gets very cold (close to 0°C or below) the moisture in the air freezes on the outdoor unit’s heat exchanger as the fan blows the air across it. A defrost cycle is simply the system recognising that ice has formed or begun to form and automatically fixes this.



Airconditioners Ductless. Why does my unit have to do a defrost cycle?



Any ice building up on the outside heat exchanger reduces the airflow across it, which will affect the efficiency, sometimes reducing it dramatically. In extreme cases this can also cause damage to the outdoor unit.


Portable Airconditioners. How do I tell if my unit is in a defrost cycle?




Inside you will notice the unit will stop heating, the indoor fan will stop and depending on the model there will usually be some form of visual indication like a light on the unit (usually the “run” light) will blink continuously. Outside, the outdoor fan will also have stopped and the compressor will be running.