Yearly Archives: 2016

The Approach of Modern HVAC Maintenance Schedule

The usual approach to the preventative maintenance of the heating, ventilation and conditioning Systems (HVAC) is based on hours of operation to determine regular system maintenance schedule. But over the past decade the Cutting-edge developments in the HVAC technologies allows performance based Services rely on the information on HVAC systems. It allows to perform the proper HVAC maintenance whit needs, not when the schedule says.

The Concept of modern preventive maintenance is based on indicators reliability, testing tools, diagnostics and computer modeling to identify the service requirements. Systems are monitored regularly and its actual performance is compared with certain metrics, As a result it’s possible to keep track of potential problems and assign the activities for the current or upcoming scheduled maintenance before the system fail.

In fact, many companies have the necessary technological basis for to use forward-looking approach. For example, modern complex building automation system designed in view of to support programs for predictive maintenance, as they have smart interface for data collection, processing and access to data, which allows you to maintain efficient operation of building systems.

Systems of detection and fault diagnosis systems, HVAC (FDD) – another editorial technology that is used in the forecasting approach to systems maintenance building. FDD technology automatically detect failures of the main components HVAC-systems and report on them, so that professional services timely notice a potential problem and significantly reduce the risk of long periods of inactivity. Using FDD allows building owners to save

The most recent developments in modeling techniques forecast Service use sophisticated computer programs to compare Performance of existing HVAC-systems with comprehensive information on similar systems. This allows performance services in a proactive manner to assign terms of service and have it all necessary spare parts in stock.

Many organizations have implemented powerful building automation system. But only half of operational services uses building automation system at full capacity. In many cases personnel need additional training to take advantage of all the potential of these functions.

Advantages of condensing boilers for heating systems

The latest Worldwide Energy Regulations affecting heat generation equipment and batteries on the use of efficient technologies. Condensation of water vapor is the most promising innovative technology in heating with high efficiency which is called condensing boilers.

The principles of combustion and condensation is burning any hydrocarbon fuel that provides heat which will give the end products as carbon dioxide (CO 2) and (H 2 O) water, Vaporized water spends heat, which can get back to transformed into water under high temperature due to condensation process the gas transformed into the liquid again. Design of traditional boilers does not include the condensation process and the temperature of the combustion products is always maintained at a high level. Material used for Condensing boilers are different from the traditional the heat exchanger, their heat exchanger made of an acid resistant alloy or stainless steel.

So many commercial heating systems have been promoting plans to renew old boiler rooms with the installation of latest condensing boiler solutions, but what are the main advantages of condensing boilers? Why are the most efficient option?

Increased Utilization of heat. In condensing boilers the water formed as vapor and releases energy that produce heating process. It allows more efficient operation, and also able to produce large amounts of heat from power. When we compare the process of Conventional boilers it wastes much more amount of energy.

Reduced installation costs

The gases burns at low temperature (below 40 ° C), which gives the opportunity to apply for condensing boiler flues from plastic, Due to its small size and low weight of the boiler equipment installation of the boiler requires less space, thereby reducing the installation costs of the heating system.

Adaptation to demand. Condensing boilers are adapted to demand for small to very high in any range of operation, and that allows you to work more efficiently. In conventional boilers the flue gas temperature and water in the boiler has to be above the dew point of the gases which will not allow them to adjust effectively to required changes.

Performance. Condensing boilers achieve efficiencies up to 108% relative to the lower calorific value of the fuel, putting the savings in heating between 10% and 15% on consumption compared to other modern systems and up to 30% in older facilities.

Quick amortization. The monthly reduction in gas consumption, enable faster amortization of the installation. To this aid and bonuses that trigger the regions they are added.

Lower emissions of CO 2. The reduced use of fuel affects greater care of the environment, in condensing boilers use advanced technology that burns the fuel-air mixture in optimal proportions, which minimizes the possibility of incomplete combustion of fuel. This reduces the amount of harmful emissions by 20%.

Since the condensate is chemically aggressive, in order to use it you need to make boiler elements from chemically resistant materials, so the cost of will be quite high. Though expensive it’s cheaper to buy because efficient condensing boiler, which can allows you to save on fuel consumption.

For more information about Commercial Heating Systems and Services Contact Air Track Inc.

The use of evaporative cooling devices in air conditioning systems in industrial buildings

Ensure air quality problem in a production environment, of course, belongs to the category of technology, because the focus is not so much to provide a comfortable environment, as aims to provide the necessary working conditions.

Without exaggeration we can say that the requirements for maintenance of the microclimate of the working area in the non-ferrous metallurgy enterprises are sufficiently “extreme” – this applies to the withdrawal of heat generation, and to ensure the necessary gas composition of the air.

It is known that the atmosphere in the working areas of non-ferrous metallurgy is characterized by relatively high concentrations of various gases, harmful effects on the health of staff and, consequently, complicating the implementation of their manufacturing operations.

The necessity of a large volume of gas emission assimilation determined the characteristics of the air in the production area, when its entire volume as possible is divided into separate work areas in which the local pumps are organized in combination with natural aeration space.

The problem of providing the desired microclimate in the crane cab is being addressed by at least two directions.

The first direction may include technical solutions that provide cab climate by supplying air from a central ventilation system through the movable duct. The disadvantages of this engineering solution is to limit the technological capabilities of the crane and decreased ventilation capacity due to deformation of the duct arising during operation.

The second direction is the use of self-contained air conditioning systems.

Today, we can confidently say that the main devices for cleaning the air from harmful gases are chemical filters, which are columns, equipped with a variety of nozzles, in which the contact between the aqueous solutions of reagent and purified air. Operation of these devices requires no special training, they are effective, reliable and easy to maintain.

However, these devices still have some drawbacks in terms of air quality in the limited space. Thus, during the absorption of harmful gases caused by direct contact of an aqueous solution of the reagent and air is carried adiabatic humidification. In fact, the moisture content has reached the resulting purified air is greater than the parameters of adiabatic humidification.

Ensuring the microclimate in the working areas of non-ferrous metals associated with the solution of a number of specific problems caused not only a high level of heat and water generation associated with certain technological processes, but also high gas content of the atmosphere. Used traditionally centralized ventilation methods require the use of large air exchange rates, which may not always be justified from an economic and environmental standpoints, and in some cases creates an unsolvable technical problem, which is fully applicable to the provision of the microclimate in the cabs of moving objects.

Known technical solutions in the field of air purification of harmful gases, based on the use of chemical methods, by themselves unable to provide the required sanitary standards of the air environment.

Therefore, the solution to this problem is possible based on the combined use of heat and humidity of air pre-processing to achieve a balance in the exchange of heat and moisture between the streams in chemical interaction

The choice of energy-efficient office buildings air conditioning systems

The microclimate of office space has a decisive influence on the individual performance of people, especially – temperature parameters of the environment in the room. Tired and not the location of the work is very often the consequences of poor indoor climate parameters, while, with significant economic consequences. With the construction of office buildings of class “A” requirements to a microclimate of comfort increased significantly, necessitating the installation of professional technically air conditioning systems.

One of the challenges of designing modern office building is to identify possible thermal regime at various measures of its software in the choice of economically viable option, maintains optimum air-heat treatment of all premises taking into account the coefficient of security.

Selection of the air conditioning system in the building must be carried out on the basis of carefully consider the terms of reference. The job has specific requirements for the microclimate (thermal comfort, a minimal amount of outside air and movement of air in the room to be ventilated, noise level and other parameters relevant to the purpose of each room context). It is necessary to take into account the desired life of the system, to assess the future costs of maintenance and operation. You also can not neglect the aesthetic requirements of the designer, the client and the user.

The architecture of the building and its layout have a direct influence on the choice of the air conditioning system. Along with the climatic characteristics, they are the source of data for determining the external heat gain, a significant proportion of which in the warm season of the solar radiation. Obviously, the constructive measures for sun protection are able to greatly reduce the load on the air conditioning system.

Air quality at airports

A consequence of the application of large amounts of outside air ventilation and heating systems of buildings and constructions of airports cannot be a reduction, but rather an increase in the risk of negative effects of pollutants. As one of the solutions to air quality problems in these areas are invited to use the gas filtering systems.

The volume of cargo transportation by air transport has steadily increased (from 40 to 100% per year). However, this type of cargo is not completely safe for the environment. The main objective is to minimize the airline harmful effects on the environment and, in particular, the noise level. In the US, hygienic air conditions in the rooms set the standard ASHRAE 62 – 1989.

However, to meet the requirements of this standard with the help of ventilation to the outside air quality and meet regulatory requirements. Recent studies have shown that the highest level of contamination found on the leeward areas of the airport, the departure and arrival halls and ticket offices.

Thus, when it is required to increase the quality of indoor air, the use of large amounts of outside air can increase rather than reduce the risk to human health. In the design of ventilation systems at airports must be considered as the level of outdoor air pollution, and harmful substances released indoors.

Industrial Ventilation Overlook

Ventilation of industrial buildings is of great importance in the improvement of working conditions. It is designed to remove the polluted air from the working premises and supply of fresh air in them. Aeration and mechanical ventilations systems are most and widely used industrial buildings

Aeration – is an organized, calculated and controlled natural ventilation. With aeration can be provided in shops enormous Air exchange, remove them from the excess heat and polluted air, bring fresh air into the working zone. Aeration is mainly used in hot shops. For admission to the shop outside air into the walls of the building are made open, openings in the form of gates, windows with transoms, shutters, and to remove heat and a contaminated air in the roof equipped with aeration lanterns in the form of a raised roof with side opening transoms.

In small areas with heat release hood can be carried out through direct exhaust shafts mounted on springs; evolution of heat or gas. To use additional force of wind pressure and protection from blowing exhaust shaft at the outer end of her set one of the types of deflectors. Deflectors mounted on the highest portions of the roof, so that for any direction of the wind, they are under the influence of sturgeon head.

Mechanical ventilation is carried out by means of mechanical boosters – fans or ejectors. Ventilation designed for sucking air from the premises, called the extraction and injection – supply. As the exhaust and supply air can be local and general exchange.

Local exhaust ventilation is used to remove the heat, gases, vapors or dust directly from their place of education. This is the most efficient way to remove industrial hazards, as in this case, they do not apply in the shop. In order to increase the effectiveness of local exhaust ventilation, should be possible to conceal the sources of pollutant discharge and perform suction from the shelter, and if completely hide the source of pollutant discharge is not possible, extraction should be as close to this source.

General exchange exhaust ventilation is arranged for the removal of the contaminated plant or heated air. Suction holes of ventilation are usually located in the upper zone management where usually heated air rises, vapors or gases.

The market of industrial Ventilation and Air Conditioning

According to most industry experts, the market of industrial ventilation and air-conditioning peaked. Manufacturing companies that supply goods to “assembly line”, and trading companies that buy goods from foreign manufacturers offers a complete package of services from design to delivery.

This diversity of providers has led to a wide range of products on the market that is not always in demand by consumers. Known manufacturers of equipment for industrial ventilation and air conditioning can offer solutions that are already being implemented to have the highest level of energy efficiency, but unfortunately, they are not in demand on the market due to higher initial investment.

The market of industrial ventilation equipment more transformed, if earlier in the growing market there was a large number of brands, the average share was about 3%, it is now possible to identify the lead five operators with a market share of 5 to 8% each. It speaks about strengthening the position of reliable companies, and withdrawal from the market of small or targeted at long-term cooperation between the companies. ”

70% of total consumption is used for shopping malls, water parks, office buildings, parking lots, banks, sports complexes. 20% of the total volume occupied by industrial enterprises, which include major manufacturing plants and pharmaceutical plants. The rest (10%) – private customers, which establish a system for building swimming pools and large residential building.

A trademark is not always a guarantee of success and a guarantee of long-term operation of the system. Even the most expensive high quality equipment may not work properly if the design or construction works were carried out correctly.

Market experts believe that in the near future the company-customers move from the selection of HVAC systems on a price basis to a choice based on an analysis of the operation of such systems in the future.