To maintain a comfortable temperature in the office premises , hotels medium sized trading floors of supermarkets in the best option is the so -called VRF-systems . They have a number of advantages, such as for central air conditioning systems , and before multi-split systems. VRF-systems are relatively compact and does not require a separate machine room for equipment .
One outdoor unit can support up to 64 internal , moreover it is possible to expand the system by adding additional internal blocks . The total length of all the communications system is significantly less than the total length of pipelines similar number of individual split systems . Thanks inverter compressor can achieve high rates of COP. It is also important that the VRF-systems significantly save energy . They do not require continuous maintenance and may be integrated into the central control system of any building.
One of the market leaders in VRF- systems company is Panasonic. In 2011, the company’s engineers have developed a system ECOi VRF, which showed the highest efficiency in 74 % of combinations . ECOi meets the most stringent requirements put forward by designers, architects , installers and homeowners . Consider the most important characteristics of this system on the example of the older model – VRF 2 -WAY ECOi ME1.
System belongs to the highest class of energy efficiency in industry EER4.04/COP: 4.56 ( 8 hp model ) . This is achieved through several innovations. Continue reading
According to the normative literature containing sanitary requirements for residential buildings , they should be provided with ventilation natural impulse . These are the most well-known all exhaust grilles in the kitchen, bathrooms and bathroom. A compensation exhaust air usually provide by entering the room apartment outside air through gaps in window openings , through open windows or skylights . There is such a thing as the outside air infiltration – the influx of outside air seeping through cracks external protections under the influence of wind and gravity. The beauty of this solution is that the optimal size of the window openings leaks and power headroom heating system we get a natural flow of fresh air , rich in oxygen , without additional construction and money.
In the calculations of ventilation in residential buildings sanitary norm of fresh air for each person in the room is usually considered 60 m3 / h per person or 3 m3 per 1 m2 of living space . Continue reading
Two years ago the management of the concern Systemair was decided to consolidate the production of all heating equipment under the brand Frico. On the one hand, it significantly expanded the possibilities, but on the other – significantly increased the responsibility for the possible failure of the local , including Ukrainian , markets.
At the same time the company’s strong growth came through acquisitions and air curtains manufacturers (Gelu, Shearflow, Tekadoor) in Europe . Partially their products poured into the main lineup, expanding its capabilities, partly dubbed the already existing model curtains Frico.
Thus, by the beginning of 2012 under the brand Frico produces more than 390 different air curtains . They were made in different countries, in different companies , with different technologies and different hardware components .
This circumstance prompted Systemair engineers to develop a new generation of air curtains that would connect a results of the most recent studies with new technological possibilities .
According to specialists, the diversity of the manufactured equipment could be without prejudice to the consumer to replace 150 models , making them the most versatile. Primarily developed product series PA3500 and PA4200, designed to replace the hangings series AS300/400 , AD300/400 and AG/AGV4000. Horizontal model with appropriate accessories can be connected in a continuous line , installed vertically and join column or placed in a suspended ceiling . Dimensions curtains from 1 to 3 m in increments of 0.5 m equipment available in versions without heating (A) , with electrical ( E) and hot water coolant with different parameters (WH, WL, WLL). Continue reading
Thanks to the continuous development of science and technology humanity can afford more and more everyday amenities . Thus, the widespread use of electricity provides ample opportunity for the introduction of a variety of devices to facilitate the daily work and create comfortable living conditions . Meaningful application of the laws of thermodynamics has allowed just less than a century ago to create a fridge, which was perhaps one of the most essential home appliances representatives today.
Use of the same principles , only in a different form , some time later made it possible to develop the production of air conditioners, the most coveted devices in the warmer months . With the onset of summer heat is hard to overestimate the benefits of air conditioners. And sitting in the 40 degree heat in a room at a comfortable 20-25 degrees it is not inconceivable conditioners good civilization. Continue reading
Dehumidifiers condensing type (based on the refrigeration unit) used in residential and ancillary rooms apartments and cottages in the pools and on-site . They afford to rapidly lower the relative humidity in the room with 90-100 % to the most comfortable and supportive for the human body 40-60%. An indispensable condition : drainage should be performed indoors, the temperature of which corresponds to a range of operating temperatures of the selected device .
During operation of wet air in the room passes through the desiccant evaporator on the cold surfaces of which the moisture condenses , and then flows down and is drained into the sump . The dehumidified air is fed to the condenser fan , where it is heated and returned to the room.
Due to repeated passage of air through the dryer air humidity gradually decreases , resulting in enhanced processes of evaporation from wet surfaces of walls and furniture. Getting rid of the excess moisture , and design things dry up , then the humidity in the room is no longer beyond the user-specified values – and dryer automatically shuts off. Continue reading
As is known , Ukraine not apply to countries with efficient use of natural resources . However, over the years , this problem becomes more acute. Significant place in wildlife occupy the rational use of water resources is .
Today, the only tool stimulating the end user to save resources (water , energy ) are tariffs, which significantly outpaces growth official inflation. But do not forget about the water suppliers , who also have to pay the state at the relevant rates for use of water resources . When water is taken and reset rates above the established limits defined by the state, increased significantly.
Therefore, the main task facing the water distribution system is to ensure a stable water supply , water management , which can be very scarce , detection and elimination of pipe rupture , leakage reduction and keeping operating costs as low as possible . Here one of the most effective solutions is to upgrade water systems engineering , which involves the use of high-tech pumping equipment together with modern automated control systems . Continue reading
Global air market (ie means of conditioning, ventilation and heating) , which has grown over the last decade and a half times more than $ 80 billion . In recent years, the struggle to share between producers climatic technology significantly worsened . In August 1998, Japanese and American , TOSHIBA Corporation Carrier signed a Memorandum of Understanding “with the aim of forming a strategic alliance that will bring together complementary product line of both companies .”
The new corporation TOSHIBA Carrier Corporation ( TCC ) – TOSHIBA owns 60 % of the volume , Carrier- 40%. This merger represents an almost perfect model of partnership . TOSHIBA among the ten largest companies in the world – manufacturers of electrical and electronic equipment (total sales revenue – $ 54 billion in 2000 ) , has 10 % in the international market of air conditioning, specializes in the development of split systems . During its 125 -year history TOSHIBA received more patents for invention, than any other company in this field. Many of her designs have changed the face of the market . A special place is occupied by the creation of split systems in 1961 , the first inverter technology , launched in 1981, and much more. Continue reading