In the past three years, Qatar has seen a rapid growth of new compounds, retail outlets and commercial buildings. The Twin Towers, the latest addition to Salwa Street in Qatar, is not only a 14-"oor office building overlooking the exquisite views of the corniche, but also the headquarters for the Ministry of Health and neighbors the offices of Qatar Museum
Heat able to penetrate the exterior
glass wall, limited a space allocated
for product installation
Due to its status as a government building, high quality and efficient solutions are required to ensure a high standard of solutions are installed
into these towers. The original design for the project consisted of a chiller system but issues such as shortage of power needed to be taken
into consideration. The client, H.E. Sheikh Abdullah Bin Nasser Al Thani from the Ministry of Interior, specially requested LG for this project
as he has worked with LG previously and established a good relationship with the brand. The Towers give affordable solutions resulting in a low Total Cost of Ownership (TCO) and are equipped with efficient and advanced cooling devices to make the scorching heat of the summer months more tolerable. The Twin Towers have also met the Qatar Sustainability Assessment System (QSAS) standards that focus on creating a sustainable built environment that minimizes ecological impact. Air conditioning units utilize more energy due to heat diffusing the exterior glass wall of the building. Other issues faced from the design stage included the available space allocated for the HVAC units, the initial design which was meant for a chiller system, the heat penetrating the exterior glass wall, and the limited allocated space for product installations. The issues faced presented a challenge to Twin Towers but were soon overcome.
LG Multi V, the energy saving,
cost effective system with lower
TCO and compact design
LG was involved in the project from the design phase until the completion of the project. From the introduction, LG saw that the best solution for these towers’ requirements was to install their Variable Refrigerant System (VRF), Multi V. The LG energy saving and cost effective system provided an intelligent and practical way to reduce TCO. The decision to install LG’s technology was also due to the limited space allocation proving it to be more compact than the chiller system. Also Multi V’s Dehumidification mode accurately senses the room’s temperature and controls humidity without overcooling. Multi V has a high COP level – gauged at an impressive 4.27 at cooling . which is the clearest measure of energy efficiency in air conditioning. Not only is this system energy efficient but also has a far lower impact on the environment which is made possible by LG’s inverter compressor, and the V-Scroll that is more energy efficient than the AC inverter compressor. V Scroll is a new technology used with the systems inverter compressor incorporating High Pressure Oil Return (HIPOR) and 11 percent more efficient than a conventional compressor. MULTI V II systems installed at the site comprise 135 outdoor units as well as 251 indoor units. The total capacity of the system is 4,330kW. Ultimately, from planning, through to completion, LG’s team of experts helped solve the problem of exterior heat penetration by designing the best possible HVAC system, with a perfectly calculated arrangement of air diffusers and intakes, capable of absorbing the immense quantity of solar radiation.
Space saving and cost saving for equipment purchase due to LG Multi V’s larger per-unit capacity
Due to LG Multi V system’s bigger capacity per unit fewer units were needed for installation, resulting in not only a more efficient use of installation space but also up to 25 percent decrease in equipment costs. Overall, the voltage requirement of LG Multi V is only 1600kW compared to 2000kW from its competitors, which also saves on installing new transformers. Moreover, in the original chiller, the total power consumption of the system was 5680kW whereas the installed Multi V system is only 4724kW decreasing the two towers’ power consumption by 17 percent. - The Project Manager, Mohamed Al Zabin from National Contracting & Trading Co advised “LG provided us with the best solution for this project, and continuously supported us with exceptional, logical, and practical consultation. It was only with LG’s support and dedication that we managed to have completed this project on time.”