HVAC Companies in Pakistan typically consist of components that supply, filter, heat, cool, and distribute air to the area of interest. “The sum is greater than the sum of the parts” means that the high efficiency of one component can be achieve at the expense of another. For example, there are two types of HVAC Companies in Pakistan use high voltage systems and low voltage systems. The high pressure system allows high speed air to flow into the plumbing system in the range of 10-25 meters per second.
Services of HVAC Companies in Pakistan
HVAC Companies in Pakistan have smaller plumbing and require less space to install the plumbing system. However, more fan power is need to send air. High-speed air flows slowly through the vents, blocking the strong airflow that causes inconvenience to the occupants, call the wind. Low pressure systems carry low wind speeds and require large duct space. In this case, the performance of the HVAC system depends on the selection and integration of the key components suitable for a particular building and building fabric.
In fact, the optimal integration of key HVAC components results in a highly efficient HVAC system. These are the main components or subsystems of heating. The cooling and ventilation of these components is constantly being improve in terms of technology that improves performance.
Boilers are often use to produce hot water or steam using coal, diesel, or natural gas. Conventional boilers such as cast iron and steel pipe boilers. Combustion efficiency ranges from 78% to 86%, modern condensing boilers have a combustion efficiency of 96%, and condensing boilers often use natural gas. It is a low-emission power source that removes heat from the exhaust gas more efficiently and can operate more efficiently than traditional low-load boilers (Graham, 2009).
Heat pump technology was develop as an alternative to fossil fuel boilers. This technology absorbs heat from soil, air and groundwater, worms in warm winters and regulates the temperature for indoor use. When the above cycle reverses in the summer, the heat pump draws heat from the inside and lowers the room temperature.
Refrigerants are use to produce cold water. It is pump to the air conditioner to cool the air. Cooling uses a mechanical compression or absorption process. Mechanical pressure chillers Centrifugal chillers are suitable for high performance applications such as large office buildings and retail stores. Absorption chillers, on the other hand, generate cold water from heat sources such as stoves and hot water. Instead of using electricity to power the compressor.
An absorption chiller allows you to use hot water from the air conditioner’s solar cooling system
A cooling system is need intensively. It removes heat from the environment and allows the cooler to continuously dissipate heat from the air-condition room. Air cooling or water cooling is possible. Cold condensers are use for small applications. Cold water condensers are more expensive, but more efficient in larger systems. HVAC Companies in Pakistan are often found in large complex buildings. Water-cool condensers usually require a cooling tower on the surface to transfer heat from the condenser to the environment.
Energy recovery in a mechanical ventilation system helps save energy. You can use the evaporator of the air conditioner to cool the replace air with a heat exchanger. It can cool the displace air instead of discharging it directly before it reaches a temperature of about 25 ° C in the tropics, reducing energy consumption for cooling (BCA, 2007). .. It is also suitable for hot and humid tropical areas.
The automatic condenser tube cleaning system allows the cold water chiller to work well by continuously cleaning the condenser tubes. This system circulates a cleaning sponge ball through a condenser tube. Then rinse the rotor cavity (Hydroball, 2007).
A variable air volume (VAV) system changes the amount of air that enters a room while maintaining a constant temperature. This strategy is different from a fix air volume (CAV) system, which maintains incoming air by changing the temperature of incoming air. Because the supply air is cool in the center to meet the require minimum temperature, the CAV system can blow the room / area at a lower temperature, resulting in waste energy. Alternatively, VAV improves room temperature control and can save energy by up to 15% when use with variable speed fans (BCA, 2007).
Alternative ventilation uses the “warm air boost” principle for AC ventilation. Alternative ventilation typically provides air conditioning from the overhead system via a series of adjustable floor logs. The air in the room is multi-layer. The cold air stays at the bottom of the room (where there are people who need cold air), while the warm air rises to the ceiling (Graham, 2009). As a result, Casals Ventilation Fan helps reduce the amount of energy require to speed up the fan by directing cold air to the roof, similar to traditional roof air ventilation. In addition, alternative ventilation can provide a similar level of comfort at higher temperatures, or around 18 ° C, compared to traditional ventilation systems around 13 ° C (Levin et al., 2007).
How technology can contribute to socio-economic development and environmental protection
Thanks to its high energy consumption, highly efficient heating, ventilation and air conditioning systems contribute to economic and environmental development. First, it is report that there is the potential to save 30-40% of the typical HVAC energy consumption for all buildings, which helps reduce greenhouse gas emissions in the construction sector.
In addition, these savings can result in significant savings in energy bills for building owners and / or tenants. With proper government regulation and support, ESCO can excel in stimulating market demand and increasing highly efficient AC receivers.
Study the feasibility of the technology and its operational fundamentals
ESCO (see section 4.16), a building code for Capacity Building-Relate Areas. HVACs, which supports the growth of energy service companies, particularly in developing countries.
One of the main obstacles to implementing highly efficient heating, ventilation and air conditioning systems is the installation of high volume systems, which usually results in inefficient charging. The workshop is necessary to continue training to break the vicious circle create in this traditional way. In addition, a well -design demonstration construction project with an efficient HVAC system and a history of energy saving and good thermal comfort would be a good motivation.
Defining minimum performance in building codes provides an organizational context for designing and implementing more efficient heating, ventilation, and air conditioning systems in a building. A good example of a standard is the Heating, Refrigeration and Air Conditioning. It also gives tips on how to achieve a very efficient AC design and installation.
Improving the energy efficiency of HVAC systems is a major focus of many energy service companies. And HVAC systems are a key component to building energy consumers. Hence, supporting the development of ESCO and energy efficiency contract services. Indirectly contributes to the implementation of efficient heating, ventilation and air conditioning systems.
Technology status and future market potential
Global demand for conventional air conditioning equipment increase 6.2 percent annually to $ 93.2 billion in 2010. In the Asia-Pacific region, demand growth was higher than the global average. Chinese market growth was about 40% of global demand growth (Freedonia, 2010).
With rising building costs and per capita income. The demand for the HVAC Companies in Pakistan is expect to grow faster than the global average. As my global demand increases, high -efficiency heating, ventilation and air conditioning systems may have good prospects in the market.
Tags: Colling System, Heating System, HVAC System, Ventilation system